/* ==========================================================================
   A 类题库 · local study app
   Light/dark, desktop sidebar + mobile bottom navigation.
   ========================================================================== */

:root {
  --bg: #f4f7fb;
  --bg-deep: #eaf0f8;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --surface-3: #eef3f9;
  --surface-glass: rgba(255, 255, 255, 0.82);
  --border: #e3eaf3;
  --border-strong: #cbd6e5;
  --text: #0d1b2e;
  --text-2: #52647b;
  --text-3: #8a9aae;
  --primary: #2563eb;
  --primary-strong: #1d4ed8;
  --primary-soft: #eef5ff;
  --teal: #0d9488;
  --teal-soft: #ecfdf9;
  --violet: #7c3aed;
  --violet-soft: #f5f1ff;
  --amber: #d97706;
  --amber-soft: #fff8e8;
  --rose: #e11d48;
  --rose-soft: #fff1f4;
  --success: #16a34a;
  --success-soft: #ecfdf3;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --warning: #d97706;
  --warning-soft: #fffbeb;
  --shadow-sm: 0 1px 2px rgba(13, 27, 46, 0.04), 0 8px 24px rgba(13, 27, 46, 0.04);
  --shadow-md: 0 18px 48px rgba(13, 27, 46, 0.1);
  --shadow-lg: 0 28px 80px rgba(8, 20, 38, 0.18);
  --radius-sm: 10px;
  --radius: 14px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-xl: 30px;
  --topbar-h: calc(72px + env(safe-area-inset-top, 0px));
  --sidebar-w: 252px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --mono: "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

[data-theme="dark"] {
  --bg: #07111f;
  --bg-deep: #050d19;
  --surface: #0d1a2c;
  --surface-2: #102137;
  --surface-3: #152942;
  --surface-glass: rgba(10, 23, 40, 0.84);
  --border: #1c3452;
  --border-strong: #2a476b;
  --text: #edf4ff;
  --text-2: #a9bad0;
  --text-3: #6f839d;
  --primary: #60a5fa;
  --primary-strong: #3b82f6;
  --primary-soft: rgba(96, 165, 250, 0.13);
  --teal: #2dd4bf;
  --teal-soft: rgba(45, 212, 191, 0.12);
  --violet: #a78bfa;
  --violet-soft: rgba(167, 139, 250, 0.13);
  --amber: #fbbf24;
  --amber-soft: rgba(251, 191, 36, 0.11);
  --rose: #fb7185;
  --rose-soft: rgba(251, 113, 133, 0.12);
  --success: #4ade80;
  --success-soft: rgba(74, 222, 128, 0.11);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.11);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.11);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 30px rgba(0, 0, 0, 0.16);
  --shadow-md: 0 22px 60px rgba(0, 0, 0, 0.32);
  --shadow-lg: 0 36px 100px rgba(0, 0, 0, 0.5);
}

/* ---------- Reset & base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100dvh;
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 8% -4%, rgba(37, 99, 235, 0.075), transparent 30%),
    radial-gradient(circle at 94% 2%, rgba(13, 148, 136, 0.06), transparent 26%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.overlay-open {
  overflow: hidden;
}

[hidden] {
  display: none !important;
}

a {
  color: var(--primary);
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

img,
svg {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
h4,
p,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

summary {
  list-style: none;
  cursor: pointer;
}

summary::-webkit-details-marker {
  display: none;
}

code,
kbd {
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--surface-3);
  color: var(--text);
}

::selection {
  background: rgba(37, 99, 235, 0.22);
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.icon {
  flex: none;
}

/* ---------- Tone helpers ---------- */

.tone-blue,
.tone-law {
  --tone: var(--primary);
  --tone-soft: var(--primary-soft);
}

.tone-teal,
.tone-operation {
  --tone: var(--teal);
  --tone-soft: var(--teal-soft);
}

.tone-violet,
.tone-equipment {
  --tone: var(--violet);
  --tone-soft: var(--violet-soft);
}

.tone-amber,
.tone-theory {
  --tone: var(--amber);
  --tone-soft: var(--amber-soft);
}

.tone-rose,
.tone-safety {
  --tone: var(--rose);
  --tone-soft: var(--rose-soft);
}

/* ---------- Shell ---------- */

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  min-height: 100dvh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
  height: 100dvh;
  padding: 24px 16px 18px;
  border-right: 1px solid var(--border);
  background: var(--surface-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  overflow-y: auto;
  z-index: 35;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 3px 8px 14px;
  color: var(--text);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 15px;
  color: #fff;
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.32), transparent 40%),
    linear-gradient(135deg, #2563eb 0%, #0d9488 100%);
  box-shadow: 0 10px 26px rgba(37, 99, 235, 0.3);
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-text strong {
  font-size: 17px;
  letter-spacing: -0.01em;
}

.brand-text small {
  color: var(--text-3);
  font-size: 11.5px;
  letter-spacing: 0.03em;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-section-label {
  padding: 0 12px 7px;
  color: var(--text-3);
  font-size: 10.5px;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav-section-gap {
  padding-top: 18px;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 42px;
  padding: 9px 12px;
  border-radius: 12px;
  color: var(--text-2);
  font-size: 14px;
  font-weight: 620;
  transition: background 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.nav-link:hover {
  background: var(--surface-2);
  color: var(--text);
}

.nav-link.is-active {
  color: var(--primary);
  background: var(--primary-soft);
}

.nav-link.is-active .nav-icon {
  color: var(--primary);
}

.nav-icon {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  color: var(--text-3);
}

.nav-link.is-active .nav-icon {
  color: var(--primary);
}

.nav-badge,
.mobile-nav-badge {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  margin-left: auto;
  border-radius: 999px;
  background: var(--rose);
  color: #fff;
  font-size: 10.5px;
  font-weight: 800;
  line-height: 1;
}

.nav-badge[hidden],
.mobile-nav-badge[hidden] {
  display: none;
}

.nav-dot,
.mobile-nav-dot {
  width: 7px;
  height: 7px;
  margin-left: auto;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px var(--amber-soft);
}

.nav-dot[hidden],
.mobile-nav-dot[hidden] {
  display: none;
}

.sidebar-bottom {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
}

.sidebar-ai {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 15px;
  background: var(--surface-2);
  color: var(--text);
  transition: border-color 0.16s ease, transform 0.16s ease;
}

.sidebar-ai:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.sidebar-ai-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.35;
}

.sidebar-ai-text strong {
  font-size: 12.5px;
}

.sidebar-ai-text small {
  color: var(--text-3);
  font-size: 10.5px;
}

.sidebar-ai-arrow {
  margin-left: auto;
  color: var(--text-3);
}

.ai-status-dot {
  position: relative;
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warning);
  box-shadow: 0 0 0 4px var(--warning-soft);
}

.ai-status-dot.is-ready {
  background: var(--success);
  box-shadow: 0 0 0 4px var(--success-soft);
}

.sidebar-note {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 4px;
  color: var(--text-3);
  font-size: 10.5px;
}

.sidebar-note .icon {
  color: var(--text-3);
}

.sidebar-note b {
  color: var(--text-2);
  font-weight: 750;
}

.workspace {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: var(--topbar-h);
  padding: env(safe-area-inset-top, 0px) 32px 0;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.topbar-title {
  min-width: 0;
}

.topbar-title h1 {
  font-size: 18px;
  font-weight: 760;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.topbar-title p {
  overflow: hidden;
  color: var(--text-3);
  font-size: 11.5px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 7px;
}

.ai-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 12px;
  margin-right: 4px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-2);
  font-size: 11.5px;
  font-weight: 650;
  transition: border-color 0.16s ease, color 0.16s ease;
}

.ai-pill:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.ai-pill .ai-status-dot {
  width: 7px;
  height: 7px;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 12px;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.icon-btn:hover {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
}

.icon-btn.is-active {
  border-color: transparent;
  background: var(--primary-soft);
  color: var(--primary);
}

.view {
  flex: 1;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 34px 84px;
}

.view-enter {
  animation: viewIn 0.32s ease;
}

.page {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* ---------- Typography & common ---------- */

.section-kicker {
  display: block;
  margin-bottom: 5px;
  color: var(--text-3);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.page-head h2 {
  font-size: clamp(26px, 2.5vw, 34px);
  font-weight: 790;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.page-head p {
  max-width: 720px;
  margin-top: 7px;
  color: var(--text-2);
  font-size: 13.5px;
}

.page-head-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  height: 36px;
  padding: 0 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-2);
  font-size: 12px;
  font-weight: 650;
}

.page-head-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
}

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.section-head h3 {
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.text-button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-3);
  font-size: 12px;
  font-weight: 650;
  cursor: pointer;
}

.text-button:hover {
  color: var(--primary);
}

.subtle-note {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-3);
  font-size: 11.5px;
}

.filter-count {
  color: var(--text-3);
  font-size: 12px;
  white-space: nowrap;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 17px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 13.5px;
  font-weight: 680;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease,
    border-color 0.16s ease, color 0.16s ease;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.48;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  box-shadow: 0 9px 22px rgba(37, 99, 235, 0.22);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.btn-ghost {
  background: transparent;
  color: var(--text-2);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--surface-2);
  color: var(--text);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger-ghost {
  border-color: color-mix(in srgb, var(--danger) 22%, transparent);
  color: var(--danger);
  background: transparent;
}

.btn-danger-ghost:hover:not(:disabled) {
  background: var(--danger-soft);
}

.btn-lg {
  height: 50px;
  padding: 0 23px;
  border-radius: 14px;
  font-size: 14.5px;
}

.btn-md {
  height: 42px;
}

.btn-sm {
  height: 34px;
  padding: 0 12px;
  border-radius: 10px;
  font-size: 12px;
}

.btn-block {
  width: 100%;
}

.button-spinner {
  width: 15px;
  height: 15px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ---------- Badges & tags ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 23px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 780;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.badge-single {
  color: var(--primary);
  background: var(--primary-soft);
}

.badge-multi {
  color: var(--violet);
  background: var(--violet-soft);
}

.badge-neutral {
  color: var(--text-2);
  background: var(--surface-3);
}

.badge-pass {
  color: var(--success);
  background: var(--success-soft);
}

.badge-fail {
  color: var(--danger);
  background: var(--danger-soft);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 23px;
  padding: 2px 8px;
  border-radius: 7px;
  background: var(--surface-3);
  color: var(--text-2);
  font-size: 10.5px;
  font-weight: 580;
  line-height: 1.15;
}

.tag-category {
  color: var(--tone);
  background: var(--tone-soft);
}

.question-id {
  margin-left: auto;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.02em;
}

/* ---------- Progress ---------- */

.progress {
  position: relative;
  width: 100%;
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-3);
}

.progress > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb, #0d9488);
  transition: width 0.3s ease;
}

.progress-sm {
  height: 6px;
}

.progress-session {
  height: 10px;
}

/* ---------- Hero / dashboard ---------- */

.hero-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 24px;
  min-height: 310px;
  padding: 34px;
  overflow: hidden;
  border-radius: var(--radius-xl);
  color: #f8fbff;
  background:
    radial-gradient(circle at 78% 18%, rgba(45, 212, 191, 0.35), transparent 30%),
    radial-gradient(circle at 18% 0%, rgba(96, 165, 250, 0.35), transparent 35%),
    linear-gradient(135deg, #0a1e3c 0%, #11376b 48%, #0b5e63 100%);
  box-shadow: 0 24px 70px rgba(9, 31, 62, 0.28);
}

.hero-card::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.24;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, #000, transparent 82%);
}

.hero-card::after {
  position: absolute;
  right: -8%;
  bottom: -35%;
  width: 460px;
  height: 460px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  content: "";
  box-shadow:
    0 0 0 60px rgba(255, 255, 255, 0.035),
    0 0 0 140px rgba(255, 255, 255, 0.025);
}

.hero-copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 27px;
  padding: 0 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(240, 248, 255, 0.82);
  font-size: 10.5px;
  font-weight: 650;
  letter-spacing: 0.04em;
  backdrop-filter: blur(8px);
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #5eead4;
  box-shadow: 0 0 0 4px rgba(94, 234, 212, 0.15);
}

.hero-copy h2 {
  max-width: 720px;
  margin-top: 16px;
  font-size: clamp(28px, 3.1vw, 43px);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.18;
}

.hero-copy > p {
  max-width: 650px;
  margin-top: 13px;
  color: rgba(232, 243, 255, 0.7);
  font-size: 13.5px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-card .btn-primary {
  color: #0a1e3c;
  background: #fff;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.16);
}

.hero-card .btn-secondary {
  border-color: rgba(255, 255, 255, 0.17);
  color: #f3f8ff;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
}

.hero-card .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 18px;
  margin-top: 22px;
  color: rgba(232, 243, 255, 0.6);
  font-size: 11px;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.hero-visual {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  min-height: 240px;
}

.signal-orbit {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
}

.orbit-one {
  width: 150px;
  height: 150px;
  animation: orbitPulse 6s ease-in-out infinite;
}

.orbit-two {
  width: 220px;
  height: 220px;
  animation: orbitPulse 6s ease-in-out 0.8s infinite;
}

.orbit-three {
  width: 292px;
  height: 292px;
  animation: orbitPulse 6s ease-in-out 1.6s infinite;
}

.signal-core {
  display: grid;
  place-items: center;
  width: 92px;
  height: 92px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: #d8fff9;
  background:
    radial-gradient(circle at 32% 24%, rgba(255, 255, 255, 0.35), transparent 35%),
    linear-gradient(135deg, rgba(37, 99, 235, 0.8), rgba(13, 148, 136, 0.85));
  box-shadow:
    0 0 0 13px rgba(255, 255, 255, 0.05),
    0 20px 48px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(10px);
}

.signal-chip {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 98px;
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  background: rgba(5, 22, 45, 0.42);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(12px);
}

.signal-chip strong {
  font-size: 17px;
  font-weight: 780;
  line-height: 1.15;
}

.signal-chip span {
  color: rgba(232, 243, 255, 0.55);
  font-size: 9.5px;
}

.chip-coverage {
  top: 14%;
  right: 2%;
}

.chip-accuracy {
  bottom: 12%;
  left: 0;
}

.signal-bars {
  position: absolute;
  right: 12%;
  bottom: 12%;
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 44px;
  opacity: 0.6;
}

.signal-bars i {
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(to top, rgba(45, 212, 191, 0.35), #5eead4);
  animation: barWave 2.8s ease-in-out infinite alternate;
}

.signal-bars i:nth-child(2n) {
  animation-delay: 0.4s;
}

.signal-bars i:nth-child(3n) {
  animation-delay: 0.8s;
}

/* ---------- Stats ---------- */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.stat-tile {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  min-width: 0;
  padding: 17px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  color: var(--text);
  transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

a.stat-tile:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 39px;
  height: 39px;
  border-radius: 12px;
  color: var(--tone);
  background: var(--tone-soft);
}

.stat-content {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.stat-label {
  color: var(--text-3);
  font-size: 11px;
  font-weight: 620;
}

.stat-value {
  margin-top: 2px;
  font-size: 25px;
  font-weight: 790;
  letter-spacing: -0.04em;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}

.stat-value small {
  color: var(--text-3);
  font-size: 11px;
  font-weight: 620;
  letter-spacing: 0;
}

.stat-hint {
  margin-top: 3px;
  overflow: hidden;
  color: var(--text-3);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- Dashboard layout ---------- */

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(310px, 0.75fr);
  gap: 18px;
  align-items: start;
}

.dashboard-side {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.category-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.category-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 20px;
  align-items: center;
  gap: 12px;
  padding: 10px 8px;
  margin: 0 -8px;
  border-radius: 12px;
  color: var(--text);
  transition: background 0.16s ease;
}

.category-row:hover {
  background: var(--surface-2);
}

.category-emblem {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  color: var(--tone);
  background: var(--tone-soft);
}

.category-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.category-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.category-line strong {
  font-size: 12.5px;
  font-weight: 700;
}

.category-line small {
  color: var(--text-3);
  font-size: 10px;
}

.category-line b {
  margin-left: auto;
  color: var(--text-2);
  font-size: 11.5px;
  font-weight: 720;
  font-variant-numeric: tabular-nums;
}

.category-chevron {
  color: var(--text-3);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.quick-action {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-2);
  color: var(--text);
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.quick-action:hover {
  transform: translateY(-2px);
  border-color: var(--tone);
  background: var(--surface);
}

.quick-action > span {
  display: grid;
  place-items: center;
  width: 33px;
  height: 33px;
  margin-bottom: 2px;
  border-radius: 10px;
  color: var(--tone);
  background: var(--tone-soft);
}

.quick-action strong {
  font-size: 12px;
  font-weight: 700;
}

.quick-action small {
  color: var(--text-3);
  font-size: 9.5px;
  line-height: 1.35;
}

.weak-topics {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.weak-topic {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 11px;
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--text);
  font-size: 11.5px;
  transition: background 0.16s ease;
}

.weak-topic:hover {
  background: var(--primary-soft);
}

.weak-topic b {
  color: var(--danger);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.recent-panel {
  padding: 22px 24px;
}

.record-list {
  display: flex;
  flex-direction: column;
}

.record-row {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  padding: 12px 6px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  transition: background 0.16s ease;
}

.record-row:last-child {
  border-bottom: 0;
}

.record-row:hover {
  background: var(--surface-2);
}

.record-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  color: var(--tone);
  background: var(--tone-soft);
}

.record-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.record-main strong {
  overflow: hidden;
  font-size: 12.5px;
  font-weight: 680;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.record-main small {
  color: var(--text-3);
  font-size: 10px;
}

.record-score {
  margin-left: auto;
  font-size: 17px;
  font-weight: 790;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.record-score small {
  color: var(--text-3);
  font-size: 9px;
}

.record-chevron {
  color: var(--text-3);
}

/* ---------- Resume cards ---------- */

.resume-stack {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.resume-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid var(--border);
  border-radius: 15px;
  background:
    linear-gradient(90deg, var(--primary-soft), transparent 60%),
    var(--surface);
  color: var(--text);
  transition: border-color 0.16s ease, transform 0.16s ease;
}

.resume-card.is-exam {
  background:
    linear-gradient(90deg, var(--amber-soft), transparent 60%),
    var(--surface);
}

.resume-card:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.resume-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  color: var(--tone);
  background: var(--tone-soft);
}

.resume-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.resume-copy strong {
  font-size: 12.5px;
}

.resume-copy small {
  color: var(--text-3);
  font-size: 10.5px;
}

.resume-action {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  color: var(--primary);
  font-size: 11.5px;
  font-weight: 700;
  white-space: nowrap;
}

/* ---------- Empty state ---------- */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 42px 22px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  text-align: center;
}

.empty-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 12px;
  border-radius: 16px;
  color: var(--text-3);
  background: var(--surface-2);
}

.empty-state h3 {
  font-size: 15px;
  font-weight: 750;
}

.empty-state p {
  max-width: 430px;
  margin-top: 5px;
  color: var(--text-3);
  font-size: 12px;
}

.empty-action {
  margin-top: 16px;
}

/* ---------- Practice setup ---------- */

.practice-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.55fr);
  gap: 18px;
  align-items: start;
}

.setup-card {
  padding: 0;
  overflow: hidden;
}

.setup-section {
  padding: 22px 24px;
  border-bottom: 1px solid var(--border);
}

.setup-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.setup-label > span:first-child {
  font-size: 13px;
  font-weight: 750;
}

.setup-label small {
  color: var(--text-3);
  font-size: 10.5px;
}

.setup-label-actions {
  display: inline-flex;
  gap: 12px;
}

.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 3px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
}

.segment {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 35px;
  padding: 0 14px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--text-2);
  font-size: 12px;
  font-weight: 650;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease, box-shadow 0.16s ease;
}

.segment:hover {
  color: var(--text);
}

.segment.is-active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(13, 27, 46, 0.07);
}

.category-checks {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
}

.category-check {
  position: relative;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 11px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color 0.16s ease, background 0.16s ease;
}

.category-check:hover {
  border-color: var(--tone);
}

.category-check:has(input:checked) {
  border-color: var(--tone);
  background: var(--tone-soft);
}

.category-check input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.check-box {
  display: grid;
  place-items: center;
  flex: none;
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--border-strong);
  border-radius: 6px;
  color: transparent;
  background: var(--surface);
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.category-check input:checked + .check-box {
  border-color: var(--tone);
  background: var(--tone);
  color: #fff;
}

.check-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.3;
}

.check-copy strong {
  font-size: 11.5px;
  font-weight: 650;
}

.check-copy small {
  color: var(--text-3);
  font-size: 9.5px;
}

.select-wrap {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 0;
}

.select-wrap > .icon:first-child {
  position: absolute;
  left: 13px;
  z-index: 1;
  color: var(--text-3);
  pointer-events: none;
}

.select-wrap > .icon:last-child {
  position: absolute;
  right: 12px;
  z-index: 1;
  color: var(--text-3);
  pointer-events: none;
}

.select {
  width: 100%;
  height: 44px;
  padding: 0 38px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--text);
  font-size: 12.5px;
  font-weight: 580;
  appearance: none;
  cursor: pointer;
}

.select:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.switch-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}

.switch-row.is-disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.switch-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.switch-copy strong {
  font-size: 12.5px;
}

.switch-copy small {
  color: var(--text-3);
  font-size: 10.5px;
}

.switch-row input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.switch-ui {
  position: relative;
  flex: none;
  width: 42px;
  height: 24px;
  margin-left: auto;
  border-radius: 999px;
  background: var(--border-strong);
  transition: background 0.18s ease;
}

.switch-ui::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.18);
  content: "";
  transition: transform 0.18s ease;
}

.switch-row input:checked + .switch-ui {
  background: var(--primary);
}

.switch-row input:checked + .switch-ui::after {
  transform: translateX(18px);
}

.setup-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  background: var(--surface-2);
}

.setup-preview {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--text-2);
}

.setup-preview b {
  color: var(--primary);
  font-size: 20px;
  font-variant-numeric: tabular-nums;
}

.setup-preview small {
  color: var(--text-3);
  font-size: 10px;
}

.setup-aside {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.aside-card {
  padding: 20px;
}

.aside-art {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  border-radius: 14px;
  color: var(--primary);
  background: var(--primary-soft);
}

.aside-card h3 {
  font-size: 15px;
  font-weight: 750;
}

.tip-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
  margin-top: 14px;
  list-style: none;
}

.tip-list li {
  display: flex;
  gap: 9px;
  color: var(--text-2);
  font-size: 11px;
  line-height: 1.55;
}

.tip-list li span {
  flex: none;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 700;
}

.aside-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.aside-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  text-align: center;
}

.aside-stat strong {
  font-size: 20px;
  font-weight: 790;
  letter-spacing: -0.03em;
}

.aside-stat span {
  color: var(--text-3);
  font-size: 9.5px;
}

/* ---------- Session shared ---------- */

.session-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.session-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
  line-height: 1.35;
}

.session-title strong {
  overflow: hidden;
  max-width: 100%;
  font-size: 13px;
  font-weight: 720;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.session-title span {
  color: var(--text-3);
  font-size: 10.5px;
}

.session-progress {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.session-progress-meta {
  display: flex;
  justify-content: space-between;
  color: var(--text-3);
  font-size: 10px;
}

.session-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 18px;
  align-items: start;
}

.session-main {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.session-actions {
  position: sticky;
  bottom: 16px;
  z-index: 12;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface-glass);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(16px);
}

.session-actions-main {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.session-skip {
  font-size: 11px;
}

.session-side {
  position: sticky;
  top: calc(var(--topbar-h) + 16px);
  min-width: 0;
}

.session-side-card {
  padding: 18px;
}

.side-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.side-head h3 {
  font-size: 15px;
  font-weight: 750;
}

.sheet-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
}

.sheet-cell {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  min-height: 34px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--surface-2);
  color: var(--text-2);
  font-size: 10.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  transition: border-color 0.14s ease, background 0.14s ease, color 0.14s ease;
}

.sheet-cell:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.sheet-cell.is-current {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-soft);
  color: var(--primary);
}

.sheet-cell.is-correct,
.sheet-cell.is-answered {
  border-color: color-mix(in srgb, var(--success) 34%, transparent);
  background: var(--success-soft);
  color: var(--success);
}

.sheet-cell.is-wrong {
  border-color: color-mix(in srgb, var(--danger) 34%, transparent);
  background: var(--danger-soft);
  color: var(--danger);
}

.sheet-cell.is-selected {
  border-color: color-mix(in srgb, var(--primary) 34%, transparent);
  background: var(--primary-soft);
  color: var(--primary);
}

.sheet-cell.is-flagged {
  box-shadow: inset 0 0 0 2px var(--amber);
}

.cell-flag {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--amber);
}

.sheet-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-top: 12px;
  color: var(--text-3);
  font-size: 9.5px;
}

.sheet-legend span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.legend-dot {
  width: 7px;
  height: 7px;
  border-radius: 3px;
  background: var(--surface-3);
}

.legend-dot.is-current {
  background: var(--primary);
}

.legend-dot.is-correct {
  background: var(--success);
}

.legend-dot.is-wrong {
  background: var(--danger);
}

.legend-dot.is-selected {
  background: var(--primary);
  opacity: 0.5;
}

.legend-dot.is-answered {
  background: var(--success);
}

.legend-dot.is-flagged {
  background: var(--amber);
}

.side-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.side-stats div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}

.side-stats span {
  color: var(--text-3);
  font-size: 9.5px;
}

.side-stats strong {
  font-size: 17px;
  font-weight: 780;
  font-variant-numeric: tabular-nums;
}

.side-tip {
  display: flex;
  gap: 6px;
  margin-top: 12px;
  color: var(--text-3);
  font-size: 10px;
  line-height: 1.5;
}

.side-tip .icon {
  margin-top: 1px;
}

.mobile-jump-strip {
  display: none;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.mobile-jump-strip::-webkit-scrollbar {
  display: none;
}

.mobile-jump {
  flex: none;
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--surface);
  color: var(--text-3);
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
}

.mobile-jump.is-current {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-soft);
}

.mobile-jump.is-submitted {
  background: var(--success-soft);
  border-color: color-mix(in srgb, var(--success) 30%, transparent);
  color: var(--success);
}

.mobile-jump.is-selected {
  background: var(--primary-soft);
  border-color: color-mix(in srgb, var(--primary) 30%, transparent);
  color: var(--primary);
}

/* ---------- Question card ---------- */

.question-card {
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.question-head {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.question-number {
  color: var(--text-3);
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.question-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.question-title {
  margin: 16px 0 19px;
  color: var(--text);
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.012em;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.question-figure {
  margin: 0 0 18px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
}

.question-image-button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}

.question-figure img {
  width: 100%;
  max-height: 360px;
  object-fit: contain;
}

.question-figure figcaption {
  padding-top: 7px;
  color: #718096;
  font-size: 9.5px;
  text-align: center;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.option {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  width: 100%;
  padding: 13px 15px;
  border: 1.5px solid var(--border);
  border-radius: 13px;
  background: var(--surface-2);
  color: var(--text);
  text-align: left;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.6;
  cursor: pointer;
  transition: border-color 0.14s ease, background 0.14s ease, transform 0.14s ease;
}

@media (hover: hover) {
  .option:hover:not(:disabled) {
    border-color: color-mix(in srgb, var(--primary) 50%, var(--border));
    background: var(--surface);
  }
}

.option:disabled {
  cursor: default;
}

.option.is-selected {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.option.is-correct {
  border-color: var(--success);
  background: var(--success-soft);
}

.option.is-wrong {
  border-color: var(--danger);
  background: var(--danger-soft);
}

.option.is-dim {
  opacity: 0.62;
}

.option-key {
  display: grid;
  place-items: center;
  flex: none;
  width: 29px;
  height: 29px;
  border: 1.5px solid var(--border-strong);
  border-radius: 50%;
  background: var(--surface);
  color: var(--text-2);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  transition: background 0.14s ease, border-color 0.14s ease, color 0.14s ease;
}

.option-multi .option-key {
  border-radius: 8px;
}

.option.is-selected .option-key {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.option.is-correct .option-key {
  border-color: var(--success);
  background: var(--success);
  color: #fff;
}

.option.is-wrong .option-key {
  border-color: var(--danger);
  background: var(--danger);
  color: #fff;
}

.option-text {
  flex: 1;
  min-width: 0;
  padding-top: 2px;
  overflow-wrap: anywhere;
}

.option-mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border-radius: 50%;
}

.option-mark-correct {
  color: var(--success);
  background: var(--success-soft);
}

.option-mark-wrong {
  color: var(--danger);
  background: var(--danger-soft);
}

.result-banner {
  display: flex;
  gap: 11px;
  margin-top: 16px;
  padding: 13px 15px;
  border: 1px solid transparent;
  border-radius: 13px;
}

.result-banner strong {
  display: block;
  font-size: 12.5px;
  font-weight: 750;
}

.result-banner p {
  margin-top: 2px;
  font-size: 11px;
  line-height: 1.5;
}

.result-banner.is-success {
  border-color: color-mix(in srgb, var(--success) 22%, transparent);
  background: var(--success-soft);
  color: var(--success);
}

.result-banner.is-danger {
  border-color: color-mix(in srgb, var(--danger) 22%, transparent);
  background: var(--danger-soft);
  color: var(--danger);
}

.result-banner.is-warning {
  border-color: color-mix(in srgb, var(--warning) 24%, transparent);
  background: var(--warning-soft);
  color: var(--warning);
}

.result-banner p {
  color: var(--text-2);
}

.result-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: color-mix(in srgb, currentColor 12%, transparent);
}

.answer-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 14px;
  padding: 12px 0 2px;
  border-top: 1px solid var(--border);
}

.answer-line-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.answer-label {
  color: var(--text-3);
  font-size: 10.5px;
  font-weight: 620;
}

.answer-chip {
  display: inline-grid;
  place-items: center;
  width: 25px;
  height: 25px;
  border-radius: 7px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 750;
}

.answer-correct {
  color: var(--success);
  background: var(--success-soft);
}

.answer-user {
  color: var(--primary);
  background: var(--primary-soft);
}

.answer-empty {
  color: var(--text-3);
  font-size: 11px;
}

.mnemonic-card {
  display: flex;
  gap: 11px;
  margin-top: 15px;
  padding: 14px 15px;
  border: 1px solid color-mix(in srgb, var(--amber) 22%, transparent);
  border-radius: 14px;
  background:
    radial-gradient(circle at 0% 0%, color-mix(in srgb, var(--amber) 12%, transparent), transparent 55%),
    var(--surface-2);
}

.mnemonic-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 31px;
  height: 31px;
  border-radius: 9px;
  color: var(--amber);
  background: var(--amber-soft);
}

.mnemonic-label {
  margin-bottom: 2px;
  color: var(--amber);
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.mnemonic-card p {
  color: var(--text-2);
  font-size: 12px;
  line-height: 1.6;
}

.mnemonic-empty {
  opacity: 0.8;
}

.question-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  padding-top: 15px;
  border-top: 1px solid var(--border);
}

.question-actions-left,
.question-actions-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

/* ---------- Exam setup ---------- */

.exam-setup-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.65fr);
  gap: 18px;
  align-items: start;
}

.exam-intro-card {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 100% 0%, var(--amber-soft), transparent 38%),
    var(--surface);
}

.exam-intro-top {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

.exam-medal {
  display: grid;
  place-items: center;
  flex: none;
  width: 60px;
  height: 60px;
  border: 1px solid color-mix(in srgb, var(--amber) 20%, transparent);
  border-radius: 18px;
  color: var(--amber);
  background:
    radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.38), transparent 42%),
    var(--amber-soft);
}

.exam-intro-top h3 {
  margin-top: 1px;
  font-size: 21px;
  font-weight: 780;
  letter-spacing: -0.03em;
}

.exam-intro-top p {
  max-width: 560px;
  margin-top: 4px;
  color: var(--text-2);
  font-size: 12px;
}

.exam-rule-chips {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 22px;
}

.exam-rule-chips span {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--text-3);
  font-size: 9.5px;
}

.exam-rule-chips b {
  color: var(--text);
  font-size: 20px;
  font-weight: 790;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.exam-rules {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-top: 20px;
  list-style: none;
}

.exam-rules li {
  display: flex;
  gap: 9px;
  color: var(--text-2);
  font-size: 11.5px;
  line-height: 1.55;
}

.exam-rules li > span {
  display: grid;
  place-items: center;
  flex: none;
  width: 21px;
  height: 21px;
  margin-top: 1px;
  border-radius: 50%;
  color: var(--success);
  background: var(--success-soft);
}

.exam-intro-note {
  display: flex;
  gap: 7px;
  margin-top: 20px;
  padding: 11px 13px;
  border: 1px dashed var(--border-strong);
  border-radius: 11px;
  color: var(--text-3);
  font-size: 10px;
}

.exam-config-card {
  display: flex;
  flex-direction: column;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  color: var(--text-2);
  font-size: 11px;
  font-weight: 650;
}

.field-wide {
  grid-column: 1 / -1;
}

.field > small {
  color: var(--text-3);
  font-size: 9.5px;
  font-weight: 500;
  line-height: 1.5;
}

.field input,
.field select,
.input-group input {
  width: 100%;
  height: 43px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--surface-2);
  color: var(--text);
  font-size: 12.5px;
  font-weight: 550;
}

.field input:focus,
.field select:focus,
.input-group input:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.field .select-wrap .select {
  height: 43px;
}

.input-with-suffix {
  position: relative;
}

.input-with-suffix input {
  padding-right: 48px;
}

.input-with-suffix em {
  position: absolute;
  top: 50%;
  right: 12px;
  color: var(--text-3);
  font-size: 10px;
  font-style: normal;
  transform: translateY(-50%);
}

.exam-config-card > .btn-block {
  margin-top: 18px;
}

.exam-config-meta {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 10px;
  color: var(--text-3);
  font-size: 9.5px;
}

.exam-session-page {
  gap: 14px;
}

.exam-bar {
  position: sticky;
  top: calc(var(--topbar-h) + 10px);
  z-index: 24;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 15px;
  background: var(--surface-glass);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(18px);
}

.exam-timer {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: none;
  height: 35px;
  padding: 0 11px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.exam-timer.is-warning {
  color: var(--amber);
  border-color: color-mix(in srgb, var(--amber) 35%, transparent);
  background: var(--amber-soft);
}

.exam-timer.is-danger {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 35%, transparent);
  background: var(--danger-soft);
  animation: timerPulse 1s ease-in-out infinite;
}

.exam-bar-center {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.35;
}

.exam-bar-center strong {
  font-size: 12px;
}

.exam-bar-center span {
  color: var(--text-3);
  font-size: 9.5px;
}

.exam-bar-center b {
  color: var(--text-2);
}

.exam-bar-actions {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
}

.exam-flag-button.is-active {
  color: var(--amber);
  background: var(--amber-soft);
}

.exam-sheet-button {
  display: none;
}

.exam-progress-line {
  display: flex;
  align-items: center;
  gap: 12px;
}

.exam-progress-line .progress {
  flex: 1;
}

.exam-progress-line > span {
  flex: none;
  color: var(--text-3);
  font-size: 9.5px;
  font-variant-numeric: tabular-nums;
}

.exam-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  align-items: start;
}

.exam-main {
  display: flex;
  flex-direction: column;
  gap: 13px;
  min-width: 0;
}

.exam-nav-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px;
  border: 1px solid var(--border);
  border-radius: 15px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.exam-nav-hint {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-3);
  font-size: 9.5px;
}

.exam-side {
  position: sticky;
  top: calc(var(--topbar-h) + 16px);
}

.exam-side-card {
  padding: 18px;
}

.exam-side .sheet-grid {
  max-height: 340px;
  overflow-y: auto;
  padding: 2px;
}

.exam-side-summary {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin: 15px 0;
  padding-top: 13px;
  border-top: 1px solid var(--border);
}

.exam-side-summary div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-3);
  font-size: 10px;
}

.exam-side-summary strong {
  color: var(--text-2);
  font-size: 10.5px;
  font-weight: 650;
}

.exam-sheet-modal {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.exam-sheet-summary {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-3);
  font-size: 11px;
}

.exam-sheet-summary b {
  color: var(--text);
}

.sheet-grid-modal {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  max-height: 48dvh;
  overflow-y: auto;
  padding: 2px;
}

.sheet-grid-modal .sheet-cell {
  min-height: 40px;
}

/* ---------- Wrong book ---------- */

.wrong-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.mini-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 17px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.mini-stat span {
  color: var(--text-3);
  font-size: 10.5px;
}

.mini-stat strong {
  font-size: 23px;
  font-weight: 790;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.filter-card {
  padding: 16px 18px;
}

.filter-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 12px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--text-3);
  font-size: 11.5px;
  font-weight: 650;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease;
}

.tab:hover {
  color: var(--text);
}

.tab.is-active {
  background: var(--surface-3);
  color: var(--text);
}

.tab b {
  display: inline-grid;
  place-items: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-3);
  font-size: 9px;
  font-weight: 750;
}

.tab.is-active b {
  color: var(--primary);
}

.filter-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 13px;
}

.search-field {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--surface-2);
  color: var(--text-3);
}

.search-field:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.search-field input {
  flex: 1;
  min-width: 0;
  height: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 12px;
  outline: none;
}

.search-field input::placeholder {
  color: var(--text-3);
}

.search-field kbd {
  color: var(--text-3);
  font-size: 9px;
}

.search-field-large {
  height: 46px;
}

.select-compact {
  flex: 0 0 auto;
  width: 148px;
}

.select-compact .select {
  height: 42px;
  font-size: 11px;
}

.wrong-list {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.wrong-card {
  padding: 19px 21px;
}

.wrong-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.wrong-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.wrong-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  flex: none;
  line-height: 1.4;
}

.wrong-count {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--rose);
  font-size: 10.5px;
  font-weight: 750;
}

.wrong-time {
  color: var(--text-3);
  font-size: 9px;
}

.wrong-question {
  margin-top: 12px;
  font-size: 14.5px;
  font-weight: 620;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.wrong-subline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-top: 8px;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: 9.5px;
}

.streak-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 7px;
  border-radius: 999px;
  color: var(--amber);
  background: var(--amber-soft);
  font-family: var(--font);
  font-size: 9.5px;
}

.answer-details {
  margin-top: 13px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
  overflow: hidden;
}

.answer-details > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 13px;
  color: var(--text-2);
  font-size: 11px;
  font-weight: 650;
}

.answer-details[open] > summary {
  border-bottom: 1px solid var(--border);
}

.answer-details[open] > summary .icon {
  transform: rotate(180deg);
}

.answer-details-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 13px;
}

.options-review .option {
  font-size: 12.5px;
  padding: 10px 12px;
}

.options-review .option-key {
  width: 25px;
  height: 25px;
  font-size: 10px;
}

.answer-details-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.wrong-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 13px;
}

.wrong-actions-note {
  margin-left: auto;
  color: var(--text-3);
  font-size: 9.5px;
}

/* ---------- Records ---------- */

.records-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.record-card {
  position: relative;
  padding: 0;
  overflow: hidden;
}

.record-card-main {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 15px 48px 15px 18px;
  color: var(--text);
  transition: background 0.16s ease;
}

.record-card-main:hover {
  background: var(--surface-2);
}

.record-card-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  color: var(--tone);
  background: var(--tone-soft);
}

.record-card-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.record-card-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.record-card-title strong {
  font-size: 13.5px;
  font-weight: 720;
}

.record-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 13px;
  color: var(--text-3);
  font-size: 9.5px;
}

.record-card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.record-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.record-card-tags i {
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--surface-3);
  color: var(--text-3);
  font-size: 8.5px;
  font-style: normal;
}

.record-card-score {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  flex: none;
  margin-left: auto;
  line-height: 1.25;
}

.record-card-score strong {
  font-size: 22px;
  font-weight: 790;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.record-card-score small {
  color: var(--text-3);
  font-size: 9px;
}

.record-card-score span {
  color: var(--text-3);
  font-size: 9px;
}

.record-card-chevron {
  color: var(--text-3);
}

.record-delete {
  position: absolute;
  top: 50%;
  right: 8px;
  width: 34px;
  height: 34px;
  color: var(--text-3);
  transform: translateY(-50%);
}

.record-delete:hover {
  color: var(--danger);
  background: var(--danger-soft);
}

/* ---------- Bank ---------- */

.bank-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.bank-card {
  padding: 20px 22px;
}

.bank-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.bank-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 0;
}

.bank-number {
  flex: none;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: 9.5px;
}

.bank-question {
  margin-top: 11px;
  font-size: 14.5px;
  font-weight: 630;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.bank-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 8px;
}

.bank-answer {
  margin-top: 13px;
}

.load-more-wrap {
  display: flex;
  justify-content: center;
  padding-top: 4px;
}

.load-more-wrap:empty {
  display: none;
}

/* ---------- Result ---------- */

.result-page-head {
  align-items: flex-end;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 12px;
  color: var(--text-3);
  font-size: 10.5px;
  font-weight: 600;
}

.back-link:hover {
  color: var(--primary);
}

.result-head-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}

.result-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: 31px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 100% 0%, rgba(37, 99, 235, 0.12), transparent 34%),
    var(--surface);
  box-shadow: var(--shadow-sm);
}

.result-hero.is-pass {
  background:
    radial-gradient(circle at 100% 0%, rgba(22, 163, 74, 0.14), transparent 36%),
    radial-gradient(circle at 0% 100%, rgba(13, 148, 136, 0.08), transparent 36%),
    var(--surface);
}

.result-hero.is-fail {
  background:
    radial-gradient(circle at 100% 0%, rgba(220, 38, 38, 0.11), transparent 36%),
    radial-gradient(circle at 0% 100%, rgba(217, 119, 6, 0.08), transparent 36%),
    var(--surface);
}

.result-hero.is-practice {
  background:
    radial-gradient(circle at 100% 0%, rgba(37, 99, 235, 0.12), transparent 36%),
    radial-gradient(circle at 0% 100%, rgba(13, 148, 136, 0.08), transparent 36%),
    var(--surface);
}

.result-eyebrow {
  display: inline-block;
  color: var(--primary);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.result-hero-copy h3 {
  max-width: 720px;
  margin-top: 7px;
  font-size: clamp(23px, 2.6vw, 34px);
  font-weight: 790;
  letter-spacing: -0.04em;
  line-height: 1.25;
}

.result-hero-copy > p {
  max-width: 650px;
  margin-top: 7px;
  color: var(--text-2);
  font-size: 12px;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 19px;
}

.result-hero-score {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.score-ring {
  --ring-color: var(--primary);
  --ring-track: var(--surface-3);
  display: grid;
  place-items: center;
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  background: conic-gradient(var(--ring-color) var(--score), var(--ring-track) 0);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ring-color) 14%, transparent);
}

.score-success {
  --ring-color: var(--success);
}

.score-danger {
  --ring-color: var(--danger);
}

.score-primary {
  --ring-color: var(--primary);
}

.score-ring-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: calc(var(--size) - 20px);
  height: calc(var(--size) - 20px);
  border-radius: 50%;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.score-ring-inner strong {
  font-size: calc(var(--size) * 0.23);
  font-weight: 820;
  letter-spacing: -0.05em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.score-ring-inner small {
  color: var(--text-3);
  font-size: calc(var(--size) * 0.065);
  font-weight: 650;
  letter-spacing: 0;
}

.score-ring-inner span {
  margin-top: 4px;
  color: var(--text-3);
  font-size: 9.5px;
  font-weight: 600;
}

.result-score-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--text-3);
  font-size: 9.5px;
}

.result-score-meta b {
  color: var(--text);
}

.result-stats {
  margin-top: 2px;
}

.result-category-card {
  padding: 20px 22px;
}

.result-category-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.result-category-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 11px;
  align-items: center;
  padding: 9px 0;
}

.result-category-row .category-emblem {
  width: 32px;
  height: 32px;
  border-radius: 10px;
}

.result-category-main {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.result-category-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.result-category-line strong {
  font-size: 11.5px;
}

.result-category-line small {
  color: var(--text-3);
  font-size: 9px;
}

.result-category-line b {
  margin-left: auto;
  color: var(--text-2);
  font-size: 10.5px;
}

.result-review-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  margin-top: 4px;
}

.result-review-head h3 {
  font-size: 19px;
  font-weight: 760;
  letter-spacing: -0.025em;
}

.review-group {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.review-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
}

.review-summary-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.review-summary-left strong {
  font-size: 12.5px;
  font-weight: 700;
}

.review-summary-left b {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--surface-3);
  color: var(--text-3);
  font-size: 9.5px;
}

.review-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.review-dot.is-wrong {
  background: var(--danger);
  box-shadow: 0 0 0 4px var(--danger-soft);
}

.review-dot.is-correct {
  background: var(--success);
  box-shadow: 0 0 0 4px var(--success-soft);
}

.review-toggle {
  color: var(--text-3);
}

.review-group[open] .review-toggle .icon {
  transform: rotate(180deg);
}

.review-group[open] .review-summary {
  border-bottom: 1px solid var(--border);
}

.review-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 15px;
  background: var(--surface-2);
}

.review-question {
  box-shadow: none;
}

.result-footer-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  padding-top: 6px;
}

/* ---------- Settings ---------- */

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
}

.settings-card {
  min-width: 0;
}

.settings-ai-card {
  grid-column: 1 / -1;
}

.ai-config-status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 17px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
}

.ai-config-status > span:last-child {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.ai-config-status strong {
  font-size: 11.5px;
}

.ai-config-status small {
  color: var(--text-3);
  font-size: 9.5px;
}

.ai-config-status:has(.ai-status-dot.is-ready) {
  border-color: color-mix(in srgb, var(--success) 22%, transparent);
  background: var(--success-soft);
}

.input-group {
  display: flex;
  align-items: stretch;
}

.input-group input {
  border-radius: 11px 0 0 11px;
}

.input-action {
  display: grid;
  place-items: center;
  width: 45px;
  border: 1px solid var(--border);
  border-left: 0;
  border-radius: 0 11px 11px 0;
  background: var(--surface-2);
  color: var(--text-3);
  cursor: pointer;
}

.input-action:hover {
  color: var(--text);
}

.settings-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-top: 16px;
}

.form-status {
  color: var(--text-3);
  font-size: 10px;
}

.form-status.is-success {
  color: var(--success);
}

.form-status.is-error {
  color: var(--danger);
}

.form-status.is-loading {
  color: var(--primary);
}

.settings-note {
  display: flex;
  gap: 6px;
  margin-top: 13px;
  color: var(--text-3);
  font-size: 9.5px;
  line-height: 1.55;
}

.settings-note .icon {
  margin-top: 1px;
}

.settings-note code {
  font-size: 9px;
}

.theme-choices {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.theme-option {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.16s ease, background 0.16s ease;
}

.theme-option:hover {
  border-color: var(--border-strong);
}

.theme-option.is-active {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.theme-swatch {
  display: grid;
  place-items: center;
  flex: none;
  width: 31px;
  height: 31px;
  border-radius: 9px;
}

.theme-light {
  color: #b45309;
  background: #fff7e6;
}

.theme-dark {
  color: #c7d2fe;
  background: #1e293b;
}

.theme-system {
  color: var(--text-2);
  background: linear-gradient(135deg, #fff7e6 50%, #1e293b 50%);
}

.theme-option > span:nth-child(2) {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.3;
}

.theme-option strong {
  font-size: 10.5px;
  white-space: nowrap;
}

.theme-option small {
  color: var(--text-3);
  font-size: 8.5px;
}

.theme-check {
  position: absolute;
  top: 8px;
  right: 8px;
  display: grid;
  place-items: center;
  flex: none;
  width: 16px;
  height: 16px;
  margin-left: auto;
  border-radius: 50%;
  color: transparent;
  background: var(--surface-3);
}

.theme-option.is-active .theme-check {
  color: #fff;
  background: var(--primary);
}

.data-mini-grid,
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.data-mini-grid > div,
.about-grid > div {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--surface-2);
}

.data-mini-grid span,
.about-grid span {
  color: var(--text-3);
  font-size: 9px;
}

.data-mini-grid strong,
.about-grid strong {
  font-size: 18px;
  font-weight: 780;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.data-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 13px;
}

.about-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.about-mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #0d9488);
}

.about-head > div:last-child {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.about-head strong {
  font-size: 13px;
}

.about-head span {
  color: var(--text-3);
  font-size: 9.5px;
}

.about-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.about-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.about-category {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 8px;
  border-radius: 7px;
  background: var(--surface-2);
  color: var(--text-3);
  font-size: 9px;
}

.about-category i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--tone);
}

.about-category b {
  color: var(--text-2);
}

.about-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin-top: 12px;
  color: var(--text-3);
  font-size: 9.5px;
}

.settings-save-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 13px 11px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-glass);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(16px);
}

.settings-save-bar > span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-3);
  font-size: 10px;
}

/* ---------- Modals & overlays ---------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(4, 12, 24, 0.52);
  opacity: 0;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: opacity 0.18s ease;
}

.modal-backdrop.is-visible {
  opacity: 1;
}

.modal-backdrop.is-closing {
  opacity: 0;
}

.modal {
  display: flex;
  flex-direction: column;
  width: min(560px, 100%);
  max-height: min(760px, 88dvh);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  transform: translateY(12px) scale(0.985);
  transition: transform 0.18s ease;
}

.modal-backdrop.is-visible .modal {
  transform: none;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 16px;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

.modal-text {
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.7;
}

.modal-text b {
  color: var(--text);
}

.modal-confirm {
  width: min(460px, 100%);
}

.modal-image {
  width: min(940px, 100%);
}

.modal-image .modal-body {
  padding: 12px;
  background: var(--surface-2);
}

.lightbox-figure img {
  width: 100%;
  max-height: 74dvh;
  object-fit: contain;
  border-radius: 12px;
  background: #fff;
}

.lightbox-figure figcaption {
  padding-top: 8px;
  color: var(--text-3);
  font-size: 10px;
  text-align: center;
}

.modal-sheet {
  width: min(620px, 100%);
}

/* ---------- Analysis drawer ---------- */

.analysis-layer {
  position: fixed;
  inset: 0;
  z-index: 110;
}

.analysis-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 12, 24, 0.42);
  opacity: 0;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: opacity 0.2s ease;
}

.analysis-drawer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  width: min(485px, 100%);
  border-left: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  transform: translateX(102%);
  transition: transform 0.24s cubic-bezier(0.22, 0.8, 0.3, 1);
}

.analysis-layer.is-visible .analysis-backdrop {
  opacity: 1;
}

.analysis-layer.is-visible .analysis-drawer {
  transform: none;
}

.analysis-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 19px;
  border-bottom: 1px solid var(--border);
}

.analysis-heading {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.analysis-mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 39px;
  height: 39px;
  border-radius: 12px;
  color: var(--violet);
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.35), transparent 40%),
    var(--violet-soft);
}

.analysis-heading > div:last-child {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.35;
}

.analysis-heading strong {
  font-size: 13.5px;
  font-weight: 750;
}

.analysis-heading span {
  overflow: hidden;
  color: var(--text-3);
  font-size: 9.5px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.analysis-question {
  padding: 13px 19px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}

.analysis-question-label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  color: var(--text-3);
  font-size: 9px;
}

.analysis-question p {
  display: -webkit-box;
  margin-top: 6px;
  overflow: hidden;
  color: var(--text-2);
  font-size: 11px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.analysis-status {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 19px;
  border-bottom: 1px solid var(--border);
  color: var(--text-3);
  font-size: 9.5px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-3);
}

.status-dot.is-success {
  background: var(--success);
  box-shadow: 0 0 0 3px var(--success-soft);
}

.status-dot.is-warning {
  background: var(--warning);
  box-shadow: 0 0 0 3px var(--warning-soft);
}

.status-dot.is-error {
  background: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-soft);
}

.status-dot.is-loading {
  background: var(--primary);
  animation: dotPulse 1s ease-in-out infinite;
}

.analysis-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 18px 19px 26px;
}

.analysis-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 16px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

.analysis-model {
  overflow: hidden;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.analysis-foot-actions {
  display: flex;
  gap: 6px;
}

.ai-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 42px 18px;
  text-align: center;
}

.ai-empty-icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin-bottom: 15px;
  border-radius: 20px;
  color: var(--violet);
  background: var(--violet-soft);
}

.ai-empty h3 {
  font-size: 16px;
  font-weight: 760;
}

.ai-empty p {
  max-width: 330px;
  margin: 7px 0 18px;
  color: var(--text-3);
  font-size: 11.5px;
  line-height: 1.65;
}

.ai-empty-note {
  margin-top: 11px;
  color: var(--text-3);
  font-size: 9px;
}

.ai-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 48px 18px;
  text-align: center;
}

.ai-loading p {
  margin-top: 14px;
  font-size: 12.5px;
  font-weight: 620;
}

.ai-loading > span:last-child {
  margin-top: 3px;
  color: var(--text-3);
  font-size: 9.5px;
}

.typing-dots {
  display: inline-flex;
  gap: 4px;
}

.typing-dots i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  animation: typing 1.2s ease-in-out infinite;
}

.typing-dots i:nth-child(2) {
  animation-delay: 0.14s;
}

.typing-dots i:nth-child(3) {
  animation-delay: 0.28s;
}

.stream-cursor {
  display: inline-block;
  width: 7px;
  height: 15px;
  margin-left: 2px;
  border-radius: 2px;
  background: var(--primary);
  vertical-align: -2px;
  animation: blink 0.85s steps(2) infinite;
}

.analysis-error {
  display: flex;
  gap: 11px;
  padding: 15px;
  border: 1px solid color-mix(in srgb, var(--danger) 24%, transparent);
  border-radius: 13px;
  background: var(--danger-soft);
}

.analysis-error-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 12%, transparent);
}

.analysis-error strong {
  font-size: 12px;
}

.analysis-error p {
  margin: 3px 0 10px;
  color: var(--text-2);
  font-size: 11px;
  line-height: 1.55;
}

/* ---------- Markdown ---------- */

.markdown {
  color: var(--text-2);
  font-size: 12.5px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.markdown h2,
.markdown h3,
.markdown h4 {
  margin: 20px 0 7px;
  color: var(--text);
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.markdown h2:first-child,
.markdown h3:first-child,
.markdown h4:first-child {
  margin-top: 0;
}

.markdown h2 {
  font-size: 16px;
}

.markdown h3 {
  padding-bottom: 5px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.markdown h4 {
  font-size: 12.5px;
}

.markdown p {
  margin: 7px 0;
}

.markdown ul,
.markdown ol {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin: 7px 0;
  padding-left: 20px;
}

.markdown li {
  padding-left: 2px;
}

.markdown strong {
  color: var(--text);
  font-weight: 720;
}

.markdown code {
  font-size: 10.5px;
}

.markdown blockquote {
  margin: 10px 0;
  padding: 8px 11px;
  border-left: 3px solid var(--primary);
  border-radius: 0 8px 8px 0;
  background: var(--primary-soft);
  color: var(--text-2);
}

.markdown hr {
  height: 1px;
  margin: 16px 0;
  border: 0;
  background: var(--border);
}

/* ---------- Toasts ---------- */

#toast-root {
  position: fixed;
  top: calc(var(--topbar-h) + 12px);
  left: 50%;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  width: min(420px, calc(100vw - 28px));
  pointer-events: none;
  transform: translateX(-50%);
}

.toast {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-md);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  opacity: 0;
  transform: translateY(-8px) scale(0.98);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: none;
}

.toast-success .icon {
  color: var(--success);
}

.toast-error .icon {
  color: var(--danger);
}

.toast-info .icon {
  color: var(--primary);
}

/* ---------- Boot / error ---------- */

.boot-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 58dvh;
  text-align: center;
}

.boot-mark {
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  margin-bottom: 18px;
  border-radius: 20px;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #0d9488);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.25);
  animation: bootFloat 2.4s ease-in-out infinite;
}

.boot-screen h2 {
  font-size: 20px;
  font-weight: 760;
}

.boot-screen p {
  margin-top: 4px;
  color: var(--text-3);
  font-size: 11.5px;
}

.boot-bar {
  width: 180px;
  height: 4px;
  margin-top: 20px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-3);
}

.boot-bar span {
  display: block;
  width: 42%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb, #0d9488);
  animation: bootSlide 1.2s ease-in-out infinite;
}

.fatal-card {
  max-width: 650px;
  padding: 34px;
  margin: 8dvh auto 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.fatal-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin-bottom: 16px;
  border-radius: 16px;
  color: var(--danger);
  background: var(--danger-soft);
}

.fatal-card h2 {
  font-size: 22px;
  font-weight: 780;
}

.fatal-card > p {
  margin-top: 5px;
  color: var(--text-2);
  font-size: 12.5px;
}

.fatal-help {
  margin: 18px 0;
  padding: 14px;
  border-radius: 12px;
  background: var(--surface-2);
  font-size: 11.5px;
  line-height: 1.7;
}

.fatal-help ol {
  margin-top: 6px;
  padding-left: 19px;
}

.noscript {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  place-items: center;
  background: var(--bg);
  font-size: 16px;
}

/* ---------- Mobile nav ---------- */

.mobile-nav {
  display: none;
}

/* ---------- Responsive ---------- */

@media (max-width: 1180px) {
  :root {
    --sidebar-w: 232px;
  }

  .view {
    padding-right: 26px;
    padding-left: 26px;
  }

  .topbar {
    padding: 0 26px;
  }
}

@media (max-width: 1024px) {
  .dashboard-grid,
  .practice-layout,
  .exam-setup-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-side {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .setup-aside {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .settings-ai-card,
  .settings-about-card {
    grid-column: auto;
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  :root {
    --topbar-h: calc(62px + env(safe-area-inset-top, 0px));
  }

  .app-shell {
    display: block;
  }

  .sidebar {
    display: none;
  }

  .topbar {
    padding: env(safe-area-inset-top, 0px) 16px 0;
    background: color-mix(in srgb, var(--bg) 91%, transparent);
  }

  .topbar-title h1 {
    font-size: 16px;
  }

  .topbar-title p {
    font-size: 10px;
  }

  .ai-pill {
    display: none;
  }

  .view {
    max-width: 780px;
    padding: 18px 16px calc(102px + env(safe-area-inset-bottom));
  }

  .page {
    gap: 17px;
  }

  .page-head {
    align-items: flex-start;
    gap: 14px;
  }

  .page-head h2 {
    font-size: 26px;
  }

  .page-head p {
    font-size: 12px;
  }

  .page-head-badge {
    display: none;
  }

  .card {
    padding: 19px;
    border-radius: 19px;
  }

  .hero-card {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 25px 22px;
    border-radius: 24px;
  }

  .hero-copy h2 {
    font-size: 30px;
  }

  .hero-visual {
    min-height: 190px;
    margin-top: 4px;
  }

  .orbit-one {
    width: 120px;
    height: 120px;
  }

  .orbit-two {
    width: 170px;
    height: 170px;
  }

  .orbit-three {
    width: 224px;
    height: 224px;
  }

  .signal-core {
    width: 72px;
    height: 72px;
  }

  .signal-chip {
    min-width: 86px;
    padding: 7px 10px;
  }

  .signal-chip strong {
    font-size: 15px;
  }

  .chip-coverage {
    top: 3%;
    right: 3%;
  }

  .chip-accuracy {
    bottom: 2%;
    left: 3%;
  }

  .signal-bars {
    right: 6%;
    bottom: 5%;
  }

  .dashboard-side {
    grid-template-columns: 1fr;
  }

  .practice-layout,
  .exam-setup-grid {
    gap: 14px;
  }

  .setup-aside {
    grid-template-columns: 1fr;
  }

  .setup-section {
    padding: 19px;
  }

  .switch-row,
  .setup-footer {
    padding-right: 19px;
    padding-left: 19px;
  }

  .setup-footer {
    align-items: flex-end;
  }

  .session-side,
  .exam-side {
    display: none;
  }

  .session-layout,
  .exam-layout {
    grid-template-columns: 1fr;
  }

  .mobile-jump-strip {
    display: flex;
  }

  .session-actions {
    position: fixed;
    right: 12px;
    bottom: calc(70px + env(safe-area-inset-bottom));
    left: 12px;
    z-index: 42;
    border-radius: 15px;
  }

  .session-main {
    padding-bottom: 154px;
  }

  .session-toolbar {
    gap: 8px;
  }

  .session-title {
    align-items: flex-start;
  }

  .session-title strong {
    max-width: 42vw;
  }

  .exam-bar {
    top: calc(var(--topbar-h) + 8px);
    gap: 8px;
    padding: 8px;
  }

  .exam-bar-center {
    display: none;
  }

  .exam-sheet-button {
    display: inline-flex;
  }

  .exam-nav-hint {
    display: none;
  }

  .exam-nav-actions {
    position: sticky;
    bottom: calc(70px + env(safe-area-inset-bottom));
    z-index: 42;
  }

  .exam-main {
    padding-bottom: 12px;
  }

  .result-hero {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 24px;
  }

  .result-hero-score {
    flex-direction: row;
    justify-content: flex-start;
  }

  .result-page-head {
    align-items: flex-start;
  }

  .result-head-tags {
    justify-content: flex-start;
  }

  .settings-save-bar {
    position: static;
    margin-top: 2px;
  }

  .mobile-nav {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 45;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    padding: 6px 6px calc(6px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--border);
    background: var(--surface-glass);
    box-shadow: 0 -12px 36px rgba(13, 27, 46, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .mobile-nav-link {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 5px 2px;
    border-radius: 10px;
    color: var(--text-3);
    font-size: 9px;
    font-weight: 650;
  }

  .mobile-nav-link.is-active {
    color: var(--primary);
  }

  .mobile-nav-icon {
    display: grid;
    place-items: center;
    width: 29px;
    height: 26px;
    border-radius: 8px;
  }

  .mobile-nav-link.is-active .mobile-nav-icon {
    background: var(--primary-soft);
  }

  .mobile-nav-badge {
    position: absolute;
    top: 1px;
    left: calc(50% + 7px);
    min-width: 15px;
    height: 15px;
    padding: 0 4px;
    font-size: 8px;
  }

  .mobile-nav-dot {
    position: absolute;
    top: 3px;
    left: calc(50% + 8px);
    width: 6px;
    height: 6px;
    box-shadow: 0 0 0 3px var(--amber-soft);
  }

  .analysis-drawer {
    top: auto;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 90dvh;
    border-top: 1px solid var(--border);
    border-left: 0;
    border-radius: 22px 22px 0 0;
    transform: translateY(102%);
  }

  .analysis-head {
    padding: 16px;
  }

  .analysis-head::before {
    position: absolute;
    top: 7px;
    left: 50%;
    width: 38px;
    height: 4px;
    border-radius: 999px;
    background: var(--border-strong);
    content: "";
    transform: translateX(-50%);
  }

  .analysis-question {
    padding: 12px 16px;
  }

  .analysis-status {
    padding: 9px 16px;
  }

  .analysis-body {
    padding: 16px 16px 24px;
  }

  .analysis-foot {
    padding-bottom: calc(11px + env(safe-area-inset-bottom));
  }

  .modal-backdrop {
    align-items: flex-end;
    padding: 0;
  }

  .modal {
    width: 100%;
    max-height: 88dvh;
    border-radius: 22px 22px 0 0;
    transform: translateY(20px);
  }

  .modal-image {
    width: 100%;
  }

  .modal-header {
    padding: 16px 18px;
  }

  .modal-body {
    padding: 18px;
  }

  .modal-footer {
    padding: 13px 18px calc(13px + env(safe-area-inset-bottom));
  }

  .toast-root,
  #toast-root {
    top: calc(var(--topbar-h) + 10px);
  }
}

@media (max-width: 680px) {
  .stats-grid {
    gap: 9px;
  }

  .stat-tile {
    gap: 10px;
    padding: 13px;
  }

  .stat-icon {
    width: 34px;
    height: 34px;
  }

  .stat-value {
    font-size: 21px;
  }

  .hero-copy h2 {
    font-size: 27px;
  }

  .hero-copy > p {
    font-size: 12px;
  }

  .hero-actions .btn {
    flex: 1;
  }

  .hero-meta {
    gap: 7px 13px;
    font-size: 10px;
  }

  .section-head {
    align-items: flex-start;
  }

  .record-row {
    gap: 9px;
  }

  .record-score {
    font-size: 15px;
  }

  .record-row .badge {
    display: none;
  }

  .setup-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .setup-footer .btn {
    width: 100%;
  }

  .segmented {
    display: flex;
    width: 100%;
  }

  .segment {
    flex: 1;
    justify-content: center;
    padding: 0 8px;
  }

  .category-checks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .question-card {
    padding: 19px;
  }

  .question-title {
    font-size: 16px;
    line-height: 1.7;
  }

  .option {
    gap: 10px;
    padding: 12px;
    font-size: 13.5px;
  }

  .option-key {
    width: 27px;
    height: 27px;
  }

  .question-actions {
    align-items: flex-start;
  }

  .question-actions-right {
    margin-left: auto;
  }

  .exam-rule-chips {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .exam-bar-actions .btn {
    padding: 0 9px;
  }

  .exam-flag-button {
    font-size: 0;
    gap: 0;
  }

  .exam-flag-button .icon {
    margin: 0;
  }

  .exam-nav-actions {
    gap: 6px;
  }

  .exam-nav-actions .btn {
    padding: 0 12px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .field-wide {
    grid-column: auto;
  }

  .filter-row {
    flex-wrap: wrap;
    align-items: stretch;
  }

  .search-field {
    flex-basis: 100%;
  }

  .filter-row .select-compact {
    flex: 1 1 calc(50% - 4px);
    width: calc(50% - 4px);
    min-width: 0;
  }

  .filter-row .filter-count {
    flex: 1 1 100%;
    margin-top: 2px;
    text-align: right;
  }

  .filter-top {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .wrong-card,
  .bank-card {
    padding: 16px;
  }

  .wrong-head {
    flex-direction: column;
    gap: 8px;
  }

  .wrong-stat {
    flex-direction: row;
    align-items: center;
    gap: 9px;
  }

  .wrong-actions-note {
    display: none;
  }

  .record-card-main {
    align-items: flex-start;
    padding: 13px 42px 13px 14px;
  }

  .record-card-icon {
    width: 38px;
    height: 38px;
  }

  .record-card-score {
    margin-top: 1px;
  }

  .record-card-meta {
    gap: 3px 9px;
  }

  .record-card-tags {
    display: none;
  }

  .result-hero {
    padding: 20px;
  }

  .result-hero-copy h3 {
    font-size: 24px;
  }

  .result-actions .btn {
    flex: 1;
  }

  .result-hero-score {
    justify-content: center;
  }

  .score-ring {
    --size: 132px !important;
  }

  .review-list {
    padding: 8px;
  }

  .review-summary {
    padding: 14px 15px;
  }

  .settings-grid {
    gap: 13px;
  }

  .theme-choices {
    grid-template-columns: 1fr;
  }

  .theme-option {
    padding: 9px 10px;
  }

  .data-mini-grid,
  .about-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .settings-save-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 9px;
  }

  .settings-save-bar .btn {
    width: 100%;
  }

  .analysis-foot {
    flex-wrap: wrap;
  }

  .analysis-model {
    flex: 1 1 100%;
  }

  .analysis-foot-actions {
    width: 100%;
  }

  .analysis-foot-actions .btn {
    flex: 1;
  }

  .sheet-grid-modal {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .toast {
    font-size: 11px;
  }
}

@media (max-width: 480px) {
  .topbar-actions {
    gap: 1px;
  }

  .topbar-actions .icon-btn {
    width: 36px;
    height: 36px;
  }

  .topbar-title p {
    max-width: 42vw;
  }

  .view {
    padding-right: 12px;
    padding-left: 12px;
  }

  .hero-card {
    padding: 22px 18px;
  }

  .hero-copy h2 {
    font-size: 25px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-meta span:last-child {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stat-tile {
    flex-direction: column;
    gap: 8px;
  }

  .stat-value {
    font-size: 20px;
  }

  .category-checks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .segment {
    padding-right: 7px;
    padding-left: 7px;
    white-space: nowrap;
  }

  .session-toolbar .btn {
    font-size: 11px;
    padding: 0 9px;
  }

  .session-title span {
    font-size: 9px;
  }

  .session-actions {
    right: 8px;
    bottom: calc(66px + env(safe-area-inset-bottom));
    left: 8px;
    padding: 8px;
  }

  .session-actions .btn-secondary {
    width: 38px;
    padding: 0;
    font-size: 0;
    gap: 0;
  }

  .session-actions .btn-secondary .icon {
    margin: 0;
  }

  .session-skip {
    display: none;
  }

  .session-actions .btn-primary {
    flex: 1;
  }

  .exam-bar {
    flex-wrap: wrap;
  }

  .exam-bar-actions {
    flex: 1;
    justify-content: flex-end;
  }

  .exam-bar-actions .btn {
    height: 32px;
  }

  .exam-timer {
    height: 32px;
    font-size: 12px;
  }

  .exam-nav-actions .btn {
    padding: 0 10px;
    font-size: 12px;
  }

  .filter-top .tabs {
    width: 100%;
  }

  .tab {
    flex: 1;
    justify-content: center;
    padding: 0 7px;
  }

  .wrong-stats {
    gap: 7px;
  }

  .mini-stat {
    padding: 11px;
  }

  .mini-stat span {
    font-size: 9px;
  }

  .mini-stat strong {
    font-size: 18px;
  }

  .result-actions {
    flex-direction: column;
  }

  .result-actions .btn {
    width: 100%;
  }

  .result-hero-score {
    flex-direction: column;
  }

  .result-category-card {
    padding: 16px;
  }

  .question-meta .question-id {
    display: none;
  }

  .question-actions {
    flex-direction: column;
  }

  .question-actions-right {
    margin-left: 0;
  }
}


@media (max-width: 360px) {
  .topbar-title p {
    display: none;
  }

  .category-checks {
    grid-template-columns: 1fr;
  }

  .filter-row .select-compact {
    flex-basis: 100%;
    width: 100%;
  }

  .theme-choices {
    grid-template-columns: 1fr;
  }
}

/* ---------- Motion ---------- */

@keyframes viewIn {
  from {
    opacity: 0;
    transform: translateY(7px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes orbitPulse {
  0%,
  100% {
    opacity: 0.45;
    transform: scale(1);
  }
  50% {
    opacity: 0.9;
    transform: scale(1.025);
  }
}

@keyframes barWave {
  from {
    transform: scaleY(0.7);
  }
  to {
    transform: scaleY(1.08);
  }
}

@keyframes timerPulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--danger) 24%, transparent);
  }
  50% {
    box-shadow: 0 0 0 5px transparent;
  }
}

@keyframes dotPulse {
  0%,
  100% {
    opacity: 0.4;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes typing {
  0%,
  70%,
  100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  35% {
    opacity: 1;
    transform: translateY(-3px);
  }
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@keyframes bootFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

@keyframes bootSlide {
  0% {
    transform: translateX(-110%);
  }
  100% {
    transform: translateX(340%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}