/* Экзаменатор · Системы управления информационной безопасностью */
:root {
  color-scheme: light;
  --bg: #f3f6fb;
  --bg-deep: #e9eff8;
  --surface: #ffffff;
  --surface-2: #f7fafd;
  --surface-3: #eef4fa;
  --text: #10233c;
  --text-soft: #304a69;
  --muted: #6b7f99;
  --muted-2: #8b9cb3;
  --line: #dde6f1;
  --line-strong: #c8d5e5;
  --primary: #0d5a8f;
  --primary-600: #0b4b78;
  --primary-700: #083a5e;
  --primary-50: #e9f3fb;
  --primary-100: #d2e7f6;
  --primary-200: #a9d0ea;
  --accent: #b8832a;
  --accent-strong: #8f641b;
  --accent-soft: #fbf1dc;
  --success: #0b7a5b;
  --success-bg: #e4f6ef;
  --danger: #b42318;
  --danger-bg: #fdecea;
  --warning: #a15c07;
  --warning-bg: #fff4e4;
  --violet: #6647bd;
  --violet-bg: #f0ecff;
  --cyan: #0e7490;
  --cyan-bg: #e5f7fb;
  --green: #177a3b;
  --green-bg: #e8f7ed;
  --sidebar-bg: #0a1c33;
  --sidebar-bg-2: #0d2848;
  --sidebar-text: #eaf2fb;
  --sidebar-muted: #91a8c4;
  --sidebar-line: rgba(255, 255, 255, 0.1);
  --shadow-sm: 0 1px 2px rgba(16, 35, 60, 0.06);
  --shadow-md: 0 14px 34px rgba(16, 35, 60, 0.08);
  --shadow-lg: 0 28px 70px rgba(16, 35, 60, 0.14);
  --radius-xs: 8px;
  --radius-sm: 11px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --font-ui: "Segoe UI", "Inter", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, "Times New Roman", serif;
  --font-mono: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --topbar-height: 72px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #07111f;
  --bg-deep: #0a1728;
  --surface: #0d1b2e;
  --surface-2: #102138;
  --surface-3: #152a45;
  --text: #e8eff9;
  --text-soft: #c2d0e1;
  --muted: #8fa3bd;
  --muted-2: #7287a1;
  --line: #1d314c;
  --line-strong: #2a4464;
  --primary: #5aa9d6;
  --primary-600: #74b9e0;
  --primary-700: #8ac7e8;
  --primary-50: #0d2a42;
  --primary-100: #123a5a;
  --primary-200: #1b5078;
  --accent: #e0b05a;
  --accent-strong: #f0c574;
  --accent-soft: #352817;
  --success: #43c59a;
  --success-bg: #0d2e26;
  --danger: #ff8078;
  --danger-bg: #3a1717;
  --warning: #f0b35a;
  --warning-bg: #352510;
  --violet: #b8a4ff;
  --violet-bg: #241d45;
  --cyan: #67d3e8;
  --cyan-bg: #0c2b35;
  --green: #6fd695;
  --green-bg: #0e2d1a;
  --sidebar-bg: #05101f;
  --sidebar-bg-2: #081b31;
  --sidebar-text: #e7f0fb;
  --sidebar-muted: #8299b6;
  --sidebar-line: rgba(255, 255, 255, 0.09);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.28);
  --shadow-md: 0 14px 34px rgba(0, 0, 0, 0.32);
  --shadow-lg: 0 28px 70px rgba(0, 0, 0, 0.45);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(13, 90, 143, 0.08), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(184, 131, 42, 0.06), transparent 60%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

[data-theme="dark"] body {
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(90, 169, 214, 0.08), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(224, 176, 90, 0.04), transparent 60%),
    var(--bg);
}

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

ul, ol {
  padding-left: 1.25rem;
}

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

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

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

::selection {
  background: var(--primary-200);
  color: var(--primary-700);
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 45%, transparent);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

/* Layout */
.app-shell {
  display: grid;
  grid-template-columns: 278px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 20px 16px 18px;
  color: var(--sidebar-text);
  background:
    radial-gradient(420px 260px at 15% 0%, rgba(72, 153, 209, 0.22), transparent 65%),
    linear-gradient(180deg, var(--sidebar-bg) 0%, var(--sidebar-bg-2) 58%, #081a30 100%);
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  overflow-y: auto;
  scrollbar-width: thin;
}

.sidebar-top {
  padding: 4px 4px 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  border-radius: 14px;
}

.brand-mark {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.3));
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.2;
}

.brand-text strong {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-text span {
  margin-top: 3px;
  font-size: 10.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--sidebar-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 10px 12px;
  color: rgba(234, 242, 251, 0.73);
  border: 1px solid transparent;
  border-radius: 12px;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.nav-item svg {
  width: 19px;
  height: 19px;
  flex: 0 0 auto;
  opacity: 0.9;
}

.nav-item span:not(.nav-count) {
  font-size: 14px;
  font-weight: 500;
}

.nav-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  transform: translateX(1px);
}

.nav-item.active {
  color: #fff;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: inset 3px 0 0 #e0b05a;
}

.nav-item.active svg {
  opacity: 1;
  color: #f1c66f;
}

.nav-count {
  margin-left: auto;
  padding: 1px 7px;
  font-size: 10.5px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.11);
  border-radius: 999px;
}

.sidebar-progress {
  margin-top: auto;
  padding: 18px 4px 4px;
}

.sidebar-progress-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 9px;
  font-size: 12px;
  color: var(--sidebar-muted);
}

.sidebar-progress-head strong {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
}

.progress-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #58b5d8, #e0b05a);
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.sidebar-progress p {
  margin-top: 9px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--sidebar-muted);
}

.sidebar-footer {
  padding: 16px 4px 0;
  border-top: 1px solid var(--sidebar-line);
}

.mode-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11.5px;
  color: rgba(234, 242, 251, 0.82);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #e0b05a;
  box-shadow: 0 0 0 3px rgba(224, 176, 90, 0.16);
}

.mode-status.is-ai .status-dot {
  background: #4fd1a5;
  box-shadow: 0 0 0 3px rgba(79, 209, 165, 0.16);
}

.sidebar-footer p {
  margin-top: 7px;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(145, 168, 196, 0.7);
}

.sidebar-overlay {
  position: fixed;
  inset: 0;
  z-index: 35;
  background: rgba(4, 12, 24, 0.55);
  backdrop-filter: blur(3px);
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 18px;
  height: var(--topbar-height);
  padding: 0 32px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  backdrop-filter: blur(18px) saturate(1.2);
}

.menu-btn {
  display: none !important;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.breadcrumb-root {
  color: var(--text-soft);
  font-weight: 600;
}

.breadcrumb-sep {
  color: var(--line-strong);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-left: auto;
}

.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 12px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.18s ease, background 0.18s ease;
}

.ai-badge:hover {
  border-color: var(--line-strong);
  background: var(--surface-2);
}

.ai-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.ai-badge.is-ai .ai-dot {
  background: var(--success);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 18%, transparent);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  color: var(--text-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 11px;
  box-shadow: var(--shadow-sm);
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.icon-btn:hover {
  color: var(--primary);
  background: var(--surface-2);
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

[data-theme="light"] .icon-sun,
[data-theme="dark"] .icon-moon {
  display: none;
}

.app-content {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 30px 32px 76px;
  outline: none;
}

.app-content > * {
  animation: riseIn 0.38s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes riseIn {
  from { opacity: 0; transform: translateY(9px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Common */
.page {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.page-head-copy {
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 9px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.display-title,
.page-title {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.display-title {
  font-size: clamp(34px, 4.2vw, 52px);
  line-height: 1.05;
}

.page-title {
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.12;
}

.lead {
  max-width: 720px;
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.65;
  color: var(--muted);
}

.page-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.section-sub {
  margin-top: 3px;
  font-size: 13px;
  color: var(--muted);
}

.section-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

.section-link:hover {
  text-decoration: underline;
}

.section-link svg,
.chip svg,
.recommendation-icon svg {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
}

.modal-close svg {
  width: 16px;
  height: 16px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 9px 17px;
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  border-radius: 11px;
  white-space: nowrap;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.btn svg {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-600));
  border-color: var(--primary-600);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary) 22%, transparent);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  box-shadow: 0 10px 24px color-mix(in srgb, var(--primary) 28%, transparent);
}

.btn-secondary {
  color: var(--text-soft);
  background: var(--surface);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--surface-2);
  border-color: var(--muted-2);
}

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

.btn-ghost:hover {
  background: var(--surface-2);
}

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

.btn-danger:hover {
  background: color-mix(in srgb, var(--danger) 14%, var(--surface));
}

.btn-sm {
  min-height: 34px;
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 9px;
}

.btn-lg {
  min-height: 50px;
  padding: 12px 22px;
  font-size: 14.5px;
}

.btn-icon-only {
  width: 40px;
  padding: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.045em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface-3);
  border-radius: 999px;
}

.badge-gold {
  color: var(--accent-strong);
  background: var(--accent-soft);
}

[data-theme="dark"] .badge-gold {
  color: var(--accent);
}

.badge-blue {
  color: var(--primary);
  background: var(--primary-50);
}

.badge-green {
  color: var(--success);
  background: var(--success-bg);
}

.badge-red {
  color: var(--danger);
  background: var(--danger-bg);
}

.badge-amber {
  color: var(--warning);
  background: var(--warning-bg);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 44px 44px 38px;
  color: #fff;
  background:
    radial-gradient(700px 340px at 85% 10%, rgba(88, 181, 216, 0.24), transparent 65%),
    radial-gradient(500px 260px at 4% 110%, rgba(224, 176, 90, 0.15), transparent 65%),
    linear-gradient(135deg, #071a30 0%, #0b2b4b 55%, #0d3b5f 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  box-shadow: 0 26px 60px rgba(7, 26, 48, 0.24);
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(70% 80% at 80% 20%, #000 0%, transparent 75%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.7fr);
  gap: 38px;
  align-items: center;
}

.hero .eyebrow {
  color: #9fc7e4;
}

.hero .eyebrow::before {
  background: #e0b05a;
}

.hero h1 {
  max-width: 760px;
  font-family: var(--font-display);
  font-size: clamp(34px, 4.1vw, 54px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: #fff;
}

.hero h1 em {
  font-style: normal;
  color: #f0c574;
}

.hero-lead {
  max-width: 680px;
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.65;
  color: #c5d8e9;
}

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

.hero .btn-primary {
  color: #15243a;
  background: linear-gradient(135deg, #f4ce83, #e0b05a);
  border-color: #e0b05a;
  box-shadow: 0 10px 26px rgba(224, 176, 90, 0.24);
}

.hero .btn-primary:hover {
  background: linear-gradient(135deg, #f8d998, #e8bc6b);
}

.hero .btn-secondary {
  color: #eaf2fb;
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: none;
}

.hero .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 23px;
  font-size: 11.5px;
  color: #9eb8cf;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.hero-meta span::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #e0b05a;
}

.hero-visual {
  position: relative;
}

.mock-exam {
  padding: 16px;
  background: rgba(255, 255, 255, 0.075);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(14px);
  transform: rotate(1.4deg);
}

.mock-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.11);
}

.mock-label {
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9fc0d9;
}

.mock-number {
  font-family: var(--font-display);
  font-size: 22px;
  color: #f0c574;
}

.mock-question {
  padding: 15px 2px 13px;
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.45;
  color: #eef6fd;
}

.mock-stages {
  display: flex;
  gap: 5px;
  margin-bottom: 14px;
}

.mock-stage {
  flex: 1;
  padding: 5px 6px;
  font-size: 8.5px;
  text-align: center;
  color: #9fb8cf;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 6px;
}

.mock-stage.active {
  color: #14263b;
  background: #e0b05a;
  font-weight: 700;
}

.mock-chat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-bubble {
  max-width: 92%;
  padding: 9px 11px;
  font-size: 10.5px;
  line-height: 1.45;
  color: #dceaf7;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px 10px 10px 3px;
}

.mock-bubble.is-user {
  align-self: flex-end;
  color: #172a40;
  background: #d7eafa;
  border-radius: 10px 10px 3px 10px;
}

.mock-bubble.is-ok {
  color: #9fe3c8;
  background: rgba(67, 197, 154, 0.12);
  border: 1px solid rgba(67, 197, 154, 0.18);
}

.mock-input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  padding: 9px 11px;
  font-size: 10px;
  color: #8fa9c2;
  background: rgba(0, 0, 0, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 9px;
}

.mock-input span:last-child {
  color: #14263b;
  background: #e0b05a;
  border-radius: 5px;
  padding: 3px 8px;
  font-weight: 700;
}

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

.stat-card {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 17px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.stat-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  color: var(--primary);
  background: var(--primary-50);
  border-radius: 11px;
}

.stat-icon svg {
  width: 18px;
  height: 18px;
}

.stat-icon.is-gold {
  color: var(--accent-strong);
  background: var(--accent-soft);
}

.stat-icon.is-green {
  color: var(--success);
  background: var(--success-bg);
}

.stat-icon.is-violet {
  color: var(--violet);
  background: var(--violet-bg);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.stat-label {
  margin-top: 3px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-note {
  margin-top: 4px;
  font-size: 11px;
  color: var(--muted-2);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.step-card {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.step-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 90px;
  height: 90px;
  background: radial-gradient(circle at top right, color-mix(in srgb, var(--primary) 9%, transparent), transparent 70%);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 16px;
  font-size: 11px;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-50);
  border-radius: 10px;
}

.step-card h3 {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.step-card p {
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
}

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

.topic-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 19px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.topic-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.topic-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.topic-name {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 650;
}

.topic-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.topic-dot.cat-cyan { background: var(--cyan); }
.topic-dot.cat-red { background: var(--danger); }
.topic-dot.cat-violet { background: var(--violet); }
.topic-dot.cat-green { background: var(--green); }
.topic-dot.cat-amber { background: var(--accent); }

.topic-count {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
}

.topic-card .progress-track {
  background: var(--surface-3);
}

.topic-card .progress-fill {
  background: linear-gradient(90deg, var(--primary), var(--cyan));
}

.topic-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--muted);
}

/* AI banner */
.ai-banner {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 21px 24px;
  background:
    radial-gradient(400px 160px at 100% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%),
    var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.ai-banner-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border-radius: 13px;
}

.ai-banner-icon svg {
  width: 22px;
  height: 22px;
}

.ai-banner-copy {
  min-width: 0;
  flex: 1;
}

.ai-banner-copy strong {
  display: block;
  font-size: 14.5px;
}

.ai-banner-copy p {
  margin-top: 3px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* Question list */
.question-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  flex: 1 1 280px;
  min-width: 220px;
}

.search-box svg {
  position: absolute;
  top: 50%;
  left: 13px;
  width: 17px;
  height: 17px;
  color: var(--muted-2);
  transform: translateY(-50%);
  pointer-events: none;
}

.input,
.search-box input,
.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 42px;
  padding: 9px 13px;
  font-size: 13.5px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.search-box input {
  padding-left: 39px;
}

.input:focus,
.search-box input:focus,
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 13%, transparent);
}

.input::placeholder,
.search-box input::placeholder,
.field input::placeholder,
.field textarea::placeholder {
  color: var(--muted-2);
}

.filter-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.chip:hover {
  color: var(--text-soft);
  border-color: var(--line-strong);
}

.chip.active {
  color: var(--primary);
  background: var(--primary-50);
  border-color: var(--primary-200);
}

.chip-count {
  font-size: 10px;
  opacity: 0.75;
}

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

.question-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 19px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.question-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.question-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.question-number {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-50);
  border-radius: 10px;
}

.question-card-head .question-category {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.question-status {
  margin-left: auto;
}

.question-title {
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.005em;
  color: var(--text);
}

.question-note {
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--warning);
}

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

.question-score {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-size: 11px;
  color: var(--muted);
}

.question-score strong {
  font-size: 15px;
  color: var(--text);
}

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

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.03em;
  border-radius: 999px;
  white-space: nowrap;
}

.status-badge::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.status-new {
  color: var(--muted);
  background: var(--surface-3);
}

.status-passed {
  color: var(--success);
  background: var(--success-bg);
}

.status-failed {
  color: var(--danger);
  background: var(--danger-bg);
}

.status-progress {
  color: var(--warning);
  background: var(--warning-bg);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  padding: 36px;
  text-align: center;
  background: var(--surface);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-lg);
}

.empty-state svg {
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  color: var(--muted-2);
}

.empty-state h3 {
  font-size: 16px;
}

.empty-state p {
  max-width: 420px;
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

/* Theory */
.theory-layout {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.theory-sidebar {
  position: sticky;
  top: calc(var(--topbar-height) + 20px);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - var(--topbar-height) - 40px);
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.theory-search {
  flex: 0 0 auto;
  margin-bottom: 10px;
}

.theory-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
  padding-right: 4px;
  scrollbar-width: thin;
}

.theory-list-item {
  display: flex;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 9px;
  transition: background 0.16s ease;
}

.theory-list-item:hover {
  background: var(--surface-2);
}

.theory-list-item.active {
  background: var(--primary-50);
}

.theory-list-number {
  flex: 0 0 auto;
  width: 22px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted-2);
  padding-top: 2px;
}

.theory-list-item.active .theory-list-number {
  color: var(--primary);
}

.theory-list-title {
  font-size: 11.5px;
  line-height: 1.4;
  color: var(--text-soft);
}

.theory-list-item.active .theory-list-title {
  color: var(--primary-700);
  font-weight: 600;
}

[data-theme="dark"] .theory-list-item.active .theory-list-title {
  color: var(--primary);
}

.theory-detail {
  min-width: 0;
  padding: 30px 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.theory-head {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.theory-meta {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
}

.theory-head h1 {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.definition-card {
  position: relative;
  margin: 22px 0;
  padding: 19px 21px 19px 23px;
  background: var(--primary-50);
  border: 1px solid color-mix(in srgb, var(--primary) 14%, transparent);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.definition-label {
  margin-bottom: 7px;
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
}

.definition-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-soft);
}

.theory-block {
  margin-top: 24px;
}

.theory-block h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 9px;
  font-size: 15.5px;
  font-weight: 650;
  letter-spacing: -0.005em;
}

.theory-block h3::before {
  content: "";
  width: 3px;
  height: 15px;
  background: var(--accent);
  border-radius: 2px;
}

.theory-block p {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

.theory-block p + p {
  margin-top: 8px;
}

.theory-block ul {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 4px;
  padding-left: 0;
  list-style: none;
}

.theory-block li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-soft);
}

.theory-block li::before {
  content: "";
  position: absolute;
  top: 0.65em;
  left: 2px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary-200);
}

.followup-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}

.followup-item {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 11px;
  overflow: hidden;
}

.followup-item summary {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 12px 14px;
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-soft);
  cursor: pointer;
  list-style: none;
}

.followup-item summary::-webkit-details-marker {
  display: none;
}

.followup-item summary::before {
  content: "+";
  flex: 0 0 auto;
  width: 17px;
  height: 17px;
  display: grid;
  place-items: center;
  margin-top: 1px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  background: var(--primary-50);
  border-radius: 5px;
}

.followup-item[open] summary::before {
  content: "−";
}

.followup-answer {
  padding: 0 14px 14px 40px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.sources-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 14px;
}

.source-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  font-size: 11px;
  color: var(--text-soft);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.source-chip::before {
  content: "§";
  color: var(--accent);
  font-weight: 700;
}

.theory-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

/* Session */
.session-page {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.session-header {
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.session-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.session-title-copy {
  min-width: 0;
}

.session-eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 5px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.session-title {
  font-family: var(--font-display);
  font-size: clamp(21px, 2.4vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.session-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 14px;
  margin-top: 7px;
  font-size: 11px;
  color: var(--muted);
}

.session-timer {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-soft);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 9px;
  white-space: nowrap;
}

.session-timer svg {
  width: 14px;
  height: 14px;
  color: var(--muted);
}

.stage-strip {
  display: flex;
  align-items: center;
  gap: 0;
  margin-top: 15px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.stage-step {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: var(--muted-2);
}

.stage-step:not(:last-child)::after {
  content: "";
  width: clamp(20px, 5vw, 70px);
  height: 1px;
  margin: 0 10px;
  background: var(--line);
}

.stage-dot {
  display: grid;
  place-items: center;
  width: 21px;
  height: 21px;
  flex: 0 0 auto;
  font-size: 9.5px;
  font-weight: 700;
  color: var(--muted);
  background: var(--surface-3);
  border: 1px solid var(--line);
  border-radius: 50%;
}

.stage-step span:last-child {
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.stage-step.active {
  color: var(--primary);
}

.stage-step.active .stage-dot {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 13%, transparent);
}

.stage-step.done {
  color: var(--success);
}

.stage-step.done .stage-dot {
  color: var(--success);
  background: var(--success-bg);
  border-color: color-mix(in srgb, var(--success) 30%, transparent);
}

.session-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 308px;
  gap: 16px;
  align-items: start;
}

.chat-card {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 285px);
  min-height: 560px;
  max-height: 850px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.chat-scroll {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 24px;
  overflow-y: auto;
  scrollbar-width: thin;
  scroll-behavior: auto;
}

.message {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  max-width: 88%;
  animation: messageIn 0.3s ease both;
}

@keyframes messageIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.message-examiner {
  align-self: flex-start;
}

.message-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.avatar {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-700));
  border-radius: 9px;
  box-shadow: var(--shadow-sm);
}

.message-user .avatar {
  color: #203247;
  background: linear-gradient(135deg, #f0d49a, #d9ac59);
}

.bubble {
  min-width: 0;
  padding: 12px 15px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 4px 14px 14px 14px;
}

.message-user .bubble {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-600));
  border-color: var(--primary-600);
  border-radius: 14px 4px 14px 14px;
}

.bubble-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 5px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.message-user .bubble-head {
  color: rgba(255, 255, 255, 0.72);
}

.bubble-text {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-soft);
  overflow-wrap: anywhere;
}

.message-user .bubble-text {
  color: #fff;
}

.bubble-text p + p {
  margin-top: 7px;
}

.message-feedback {
  align-self: stretch;
  max-width: 100%;
  display: block;
  padding: 13px 16px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--warning);
  border-radius: 4px var(--radius) var(--radius) 4px;
}

.message-feedback.is-accepted {
  border-left-color: var(--success);
  background: color-mix(in srgb, var(--success-bg) 55%, var(--surface));
}

.message-feedback.is-rejected {
  border-left-color: var(--danger);
  background: color-mix(in srgb, var(--danger-bg) 45%, var(--surface));
}

.feedback-head {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  margin-bottom: 7px;
}

.feedback-title {
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.verdict-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 700;
  border-radius: 999px;
}

.verdict-accepted {
  color: var(--success);
  background: var(--success-bg);
}

.verdict-partial {
  color: var(--warning);
  background: var(--warning-bg);
}

.verdict-rejected {
  color: var(--danger);
  background: var(--danger-bg);
}

.score-chip {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-soft);
}

.feedback-text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-soft);
}

.feedback-points {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
}

.feedback-point {
  position: relative;
  padding-left: 17px;
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--muted);
}

.feedback-point::before {
  content: "✕";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 10px;
  color: var(--danger);
}

.feedback-point.is-ok::before {
  content: "✓";
  color: var(--success);
}

.feedback-answer {
  margin-top: 10px;
  padding-top: 9px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-soft);
}

.feedback-answer strong {
  color: var(--text);
}

.message-system {
  align-self: center;
  max-width: 100%;
  padding: 5px 12px;
  font-size: 10.5px;
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.composer {
  flex: 0 0 auto;
  padding: 14px 18px 16px;
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.composer-box {
  padding: 3px;
  background: var(--surface-2);
  border: 1px solid var(--line-strong);
  border-radius: 13px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.composer-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 11%, transparent);
}

.composer textarea {
  display: block;
  width: 100%;
  min-height: 74px;
  max-height: 180px;
  padding: 10px 12px 4px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text);
  background: transparent;
  border: 0;
  resize: none;
  outline: none;
}

.composer textarea::placeholder {
  color: var(--muted-2);
}

.composer-actions {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 7px 5px 9px;
}

.composer-hint {
  font-size: 10.5px;
  color: var(--muted-2);
}

.composer-hint kbd {
  padding: 1px 4px;
  font-family: var(--font-ui);
  font-size: 9.5px;
  color: var(--muted);
  background: var(--surface-3);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.composer-spacer {
  flex: 1;
}

.composer-send {
  min-height: 36px;
  padding: 6px 14px;
  font-size: 12.5px;
}

.typing {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 12px 15px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 4px 14px 14px 14px;
}

.typing-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--muted-2);
  animation: typing 1.2s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.15s; }
.typing-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.45; }
  30% { transform: translateY(-4px); opacity: 1; }
}

.session-rail {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rail-card {
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.rail-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.rail-title strong {
  font-size: 12px;
  color: var(--text);
  letter-spacing: 0;
  text-transform: none;
}

.score-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 5px;
  font-size: 11.5px;
  color: var(--muted);
}

.score-line strong {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
}

.score-bar {
  height: 7px;
  background: var(--surface-3);
  border-radius: 999px;
  overflow: hidden;
}

.score-bar + .score-line {
  margin-top: 13px;
}

.score-bar-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
  transition: width 0.5s ease;
}

.score-bar-fill.is-gold {
  background: linear-gradient(90deg, var(--accent), #e8c778);
}

.aspect-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 3px;
}

.aspect-item {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--muted);
}

.aspect-mark {
  display: grid;
  place-items: center;
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  margin-top: 1px;
  font-size: 8px;
  color: var(--muted-2);
  background: var(--surface-3);
  border-radius: 50%;
}

.aspect-item.is-ok {
  color: var(--text-soft);
}

.aspect-item.is-ok .aspect-mark {
  color: var(--success);
  background: var(--success-bg);
}

.aspect-item.is-partial .aspect-mark {
  color: var(--warning);
  background: var(--warning-bg);
}

.aspect-item.is-miss .aspect-mark {
  color: var(--danger);
  background: var(--danger-bg);
}

.rail-note {
  margin-top: 10px;
  font-size: 10.5px;
  line-height: 1.5;
  color: var(--muted-2);
}

.rail-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rail-actions .btn {
  width: 100%;
  justify-content: flex-start;
}

/* Result */
.result-hero {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  padding: 30px 34px;
  overflow: hidden;
  background:
    radial-gradient(500px 220px at 100% 0%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 70%),
    var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.result-hero::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -70px;
  width: 220px;
  height: 220px;
  border: 1px solid color-mix(in srgb, var(--primary) 10%, transparent);
  border-radius: 50%;
  pointer-events: none;
}

.grade-ring {
  --ring-color: var(--success);
  --ring-value: 0;
  position: relative;
  display: grid;
  place-items: center;
  width: 128px;
  height: 128px;
  flex: 0 0 auto;
  background: conic-gradient(var(--ring-color) calc(var(--ring-value) * 1%), var(--surface-3) 0);
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ring-color) 18%, transparent);
}

.grade-ring::before {
  content: "";
  position: absolute;
  inset: 9px;
  background: var(--surface);
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px var(--line);
}

.grade-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.grade-value {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  color: var(--ring-color);
}

.grade-caption {
  margin-top: 3px;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.result-copy {
  min-width: 0;
}

.result-copy h1 {
  margin-top: 5px;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.result-copy p {
  max-width: 620px;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 170px;
}

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

.score-card {
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.score-card-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
}

.score-card-value {
  margin-top: 4px;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.score-card-note {
  margin-top: 3px;
  font-size: 11px;
  color: var(--muted-2);
}

.result-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  gap: 16px;
  align-items: start;
}

.result-section {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.result-section + .result-section {
  margin-top: 14px;
}

.result-section h2 {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: -0.015em;
}

.result-section > p {
  margin-top: 5px;
  font-size: 12px;
  color: var(--muted);
}

.breakdown {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 14px;
}

.breakdown-row {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) 64px;
  gap: 10px;
  align-items: start;
  padding: 11px 0;
  border-top: 1px solid var(--line);
}

.breakdown-row:first-child {
  border-top: 0;
}

.breakdown-number {
  display: grid;
  place-items: center;
  width: 21px;
  height: 21px;
  font-size: 9px;
  font-weight: 700;
  color: var(--muted);
  background: var(--surface-3);
  border-radius: 6px;
}

.breakdown-q {
  font-size: 12px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text-soft);
}

.breakdown-a {
  margin-top: 3px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--muted);
}

.breakdown-score {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text);
}

.breakdown-score.is-low {
  color: var(--danger);
}

.breakdown-score.is-mid {
  color: var(--warning);
}

.breakdown-score.is-high {
  color: var(--success);
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 9px;
  font-size: 10.5px;
  line-height: 1.4;
  color: var(--text-soft);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.pill-ok {
  color: var(--success);
  background: var(--success-bg);
  border-color: color-mix(in srgb, var(--success) 16%, transparent);
}

.pill-gap {
  color: var(--danger);
  background: var(--danger-bg);
  border-color: color-mix(in srgb, var(--danger) 16%, transparent);
}

.pill-partial {
  color: var(--warning);
  background: var(--warning-bg);
  border-color: color-mix(in srgb, var(--warning) 16%, transparent);
}

.recommendation {
  display: flex;
  gap: 11px;
  padding: 12px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 11px;
}

.recommendation + .recommendation {
  margin-top: 8px;
}

.recommendation-icon {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  color: var(--primary);
  background: var(--primary-50);
  border-radius: 8px;
}

.recommendation strong {
  display: block;
  font-size: 12px;
}

.recommendation p {
  margin-top: 2px;
  font-size: 11px;
  line-height: 1.5;
  color: var(--muted);
}

.recommendation a {
  color: var(--primary);
  font-weight: 600;
}

/* Settings */
.settings-page {
  max-width: 980px;
}

.settings-layout {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.settings-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
}

.settings-card-head h2 {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: -0.01em;
}

.settings-card-head p {
  max-width: 620px;
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field.is-full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-soft);
}

.field small {
  font-size: 10.5px;
  line-height: 1.45;
  color: var(--muted);
}

.field textarea {
  min-height: 80px;
  resize: vertical;
}

.field input[type="checkbox"],
.field input[type="radio"] {
  width: 16px;
  height: 16px;
  min-height: 0;
  padding: 0;
  flex: 0 0 auto;
  accent-color: var(--primary);
  border: 0;
  background: transparent;
  box-shadow: none;
}

.field input[type="range"] {
  width: 100%;
  min-height: 0;
  padding: 0;
  accent-color: var(--primary);
  background: transparent;
  border: 0;
  box-shadow: none;
}

.input-row {
  display: flex;
  gap: 8px;
}

.input-row .input {
  flex: 1;
  min-width: 0;
}

.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.switch-row:first-of-type {
  border-top: 0;
}

.switch-copy strong {
  display: block;
  font-size: 13px;
}

.switch-copy p {
  margin-top: 2px;
  font-size: 11px;
  line-height: 1.5;
  color: var(--muted);
}

.switch {
  position: relative;
  flex: 0 0 auto;
  width: 46px;
  height: 26px;
}

.switch input {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: pointer;
}

.switch-track {
  position: absolute;
  inset: 0;
  background: var(--line-strong);
  border-radius: 999px;
  transition: background 0.2s ease;
  pointer-events: none;
}

.switch-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease;
}

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

.switch input:checked + .switch-track::after {
  transform: translateX(20px);
}

.switch input:focus-visible + .switch-track {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 25%, transparent);
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 13px;
}

.preset-card {
  padding: 10px 12px;
  text-align: left;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.preset-card:hover {
  border-color: var(--line-strong);
}

.preset-card.active {
  background: var(--primary-50);
  border-color: var(--primary-200);
}

.preset-card strong {
  display: block;
  font-size: 11.5px;
}

.preset-card span {
  display: block;
  margin-top: 2px;
  font-size: 10px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.test-result {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 10px;
  padding: 10px 12px;
  font-size: 11.5px;
  line-height: 1.5;
  border-radius: 9px;
}

.test-result.is-ok {
  color: var(--success);
  background: var(--success-bg);
}

.test-result.is-error {
  color: var(--danger);
  background: var(--danger-bg);
}

.test-result.is-pending {
  color: var(--warning);
  background: var(--warning-bg);
}

.notice {
  display: flex;
  gap: 10px;
  padding: 12px 14px;
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--text-soft);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.notice svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  margin-top: 2px;
  color: var(--primary);
}

.notice.is-warning {
  background: var(--warning-bg);
  border-color: color-mix(in srgb, var(--warning) 18%, transparent);
}

.notice.is-warning svg {
  color: var(--warning);
}

.danger-zone {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px;
  background: color-mix(in srgb, var(--danger-bg) 55%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--danger) 16%, transparent);
  border-radius: 11px;
}

.danger-zone strong {
  display: block;
  font-size: 12.5px;
  color: var(--danger);
}

.danger-zone p {
  margin-top: 2px;
  font-size: 11px;
  color: var(--muted);
}

.settings-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.literature-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 12px;
}

.literature-item {
  display: flex;
  gap: 11px;
  padding: 9px 11px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--text-soft);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 9px;
}

.literature-num {
  flex: 0 0 auto;
  width: 25px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted-2);
}

.literature-item strong {
  font-weight: 600;
}

.literature-item span {
  color: var(--muted);
}

/* Modal */
.modal-root {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(4, 12, 24, 0.56);
  backdrop-filter: blur(5px);
}

.modal {
  width: min(480px, 100%);
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.22s ease both;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(8px) scale(0.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px 0;
}

.modal-head h2 {
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: -0.01em;
}

.modal-close {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
}

.modal-close:hover {
  background: var(--surface-2);
  border-color: var(--line);
}

.modal-body {
  padding: 12px 22px 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

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

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 18px 22px 22px;
}

/* Toast */
.toast-stack {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: min(380px, calc(100vw - 40px));
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 11px 14px;
  font-size: 12px;
  line-height: 1.45;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--primary);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  animation: toastIn 0.25s ease both;
  pointer-events: auto;
}

.toast.is-success { border-left-color: var(--success); }
.toast.is-error { border-left-color: var(--danger); }
.toast.is-warning { border-left-color: var(--warning); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Misc */
.muted { color: var(--muted); }
.small { font-size: 11.5px; }
.mono { font-family: var(--font-mono); }
.nowrap { white-space: nowrap; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.kbd {
  display: inline-block;
  padding: 1px 5px;
  font-size: 10px;
  color: var(--muted);
  background: var(--surface-3);
  border: 1px solid var(--line);
  border-radius: 4px;
}

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

@keyframes spin {
  to { transform: rotate(360deg); }
}

.reveal-note {
  margin-top: 8px;
  font-size: 10px;
  color: var(--muted-2);
}

.attempts-note {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10.5px;
  color: var(--warning);
}

.attempts-note strong {
  color: var(--text-soft);
}

/* Learning course */
.hero .btn-ghost {
  color: #cfe2f2;
  border-color: transparent;
}

.hero .btn-ghost:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.learn-home-banner .ai-banner-icon {
  color: var(--primary);
  background: var(--primary-50);
}

.learn-page {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.learn-hero {
  position: relative;
  overflow: hidden;
  padding: 38px 40px 34px;
  color: #fff;
  background:
    radial-gradient(600px 300px at 88% 5%, rgba(88, 181, 216, 0.24), transparent 65%),
    radial-gradient(420px 220px at 4% 110%, rgba(224, 176, 90, 0.14), transparent 65%),
    linear-gradient(135deg, #082b36 0%, #0a4a60 55%, #0d5a78 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  box-shadow: 0 26px 60px rgba(7, 30, 45, 0.22);
}

.learn-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(75% 90% at 90% 10%, #000 0%, transparent 75%);
  pointer-events: none;
}

.learn-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.65fr);
  gap: 34px;
  align-items: center;
}

.learn-hero .eyebrow {
  color: #a8d3dc;
}

.learn-hero .eyebrow::before {
  background: #e0b05a;
}

.learn-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 4.2vw, 52px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: #fff;
}

.learn-hero p {
  max-width: 680px;
  margin-top: 14px;
  font-size: 15.5px;
  line-height: 1.65;
  color: #c8e0e7;
}

.learn-hero .btn-primary {
  color: #15243a;
  background: linear-gradient(135deg, #f4ce83, #e0b05a);
  border-color: #e0b05a;
  box-shadow: 0 10px 26px rgba(224, 176, 90, 0.24);
}

.learn-hero .btn-primary:hover {
  background: linear-gradient(135deg, #f8d998, #e8bc6b);
}

.learn-hero .btn-secondary {
  color: #eaf6f8;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: none;
}

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

.learn-hero .hero-meta {
  color: #a8cbd4;
}

.learn-progress-panel {
  padding: 20px;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 18px;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(14px);
}

.learn-progress-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  font-size: 11px;
  color: #b7d5dc;
}

.learn-progress-top strong {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #f1c66f;
}

.learn-progress-big {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: #fff;
}

.learn-progress-big span {
  margin-left: 4px;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 500;
  color: #9fc4cc;
}

.learn-progress-panel .progress-track {
  background: rgba(255, 255, 255, 0.16);
}

.learn-progress-panel p {
  margin-top: 10px;
  font-size: 11px;
  line-height: 1.5;
  color: #a8cbd4;
}

.learn-how-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.learn-how-card {
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.learn-how-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  font-size: 10px;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-50);
  border-radius: 9px;
}

.learn-how-card strong {
  display: block;
  font-size: 13px;
  line-height: 1.4;
}

.learn-how-card p {
  margin-top: 5px;
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--muted);
}

.learn-plan-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.learn-plan-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 15px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 13px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.learn-plan-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.learn-plan-card.done {
  background: color-mix(in srgb, var(--success-bg) 55%, var(--surface));
  border-color: color-mix(in srgb, var(--success) 18%, transparent);
}

.learn-plan-day {
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.learn-plan-card strong {
  font-size: 12px;
  line-height: 1.35;
}

.learn-plan-note,
.learn-plan-check {
  font-size: 10px;
  color: var(--muted);
}

.learn-plan-check {
  margin-top: 3px;
  color: var(--primary);
  font-weight: 600;
}

.learn-plan-card.done .learn-plan-check {
  color: var(--success);
}

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

.learn-module-card {
  padding: 19px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.learn-module-head {
  display: flex;
  align-items: flex-start;
  gap: 11px;
}

.learn-module-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 11px;
}

.learn-module-icon svg {
  width: 19px;
  height: 19px;
}

.cat-bg-blue { color: var(--primary); background: var(--primary-50); }
.cat-bg-cyan { color: var(--cyan); background: var(--cyan-bg); }
.cat-bg-red { color: var(--danger); background: var(--danger-bg); }
.cat-bg-violet { color: var(--violet); background: var(--violet-bg); }
.cat-bg-green { color: var(--green); background: var(--green-bg); }
.cat-bg-amber { color: var(--accent-strong); background: var(--accent-soft); }

.learn-module-head > div:nth-child(2) {
  min-width: 0;
  flex: 1;
}

.learn-module-head h3 {
  font-size: 14px;
  line-height: 1.35;
}

.learn-module-head p {
  margin-top: 3px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--muted);
}

.learn-module-head .badge {
  flex: 0 0 auto;
}

.learn-module-progress {
  margin: 14px 0 6px;
}

.learn-module-progress .progress-track {
  background: var(--surface-3);
  height: 5px;
}

.learn-module-lessons {
  display: flex;
  flex-direction: column;
}

.learn-module-lesson {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 9px 4px;
  border-top: 1px solid var(--line);
}

.learn-module-lesson:hover .learn-module-lesson strong {
  color: var(--primary);
}

.learn-module-check {
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  margin-top: 1px;
  font-size: 9px;
  color: var(--primary);
  background: var(--primary-50);
  border-radius: 50%;
}

.learn-module-lesson.done .learn-module-check {
  color: var(--success);
  background: var(--success-bg);
}

.learn-module-lesson > span:nth-child(2) {
  min-width: 0;
  flex: 1;
}

.learn-module-lesson strong {
  display: block;
  font-size: 11.5px;
  line-height: 1.4;
  color: var(--text-soft);
  transition: color 0.16s ease;
}

.learn-module-lesson small {
  display: block;
  margin-top: 2px;
  font-size: 10px;
  line-height: 1.4;
  color: var(--muted);
}

.learn-module-time {
  flex: 0 0 auto;
  font-size: 9.5px;
  color: var(--muted-2);
  white-space: nowrap;
}

.learn-lesson-questions {
  display: block;
  margin-top: 3px;
  font-size: 9.5px;
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--primary);
}

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

.learn-map summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.learn-map summary::-webkit-details-marker {
  display: none;
}

.learn-map-summary strong {
  display: block;
  font-size: 14px;
}

.learn-map-summary small {
  display: block;
  margin-top: 3px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--muted);
}

.learn-map-toggle {
  flex: 0 0 auto;
  font-size: 11px;
  font-weight: 600;
  color: var(--primary);
}

.learn-map-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 18px;
  padding: 0 20px 16px;
  border-top: 1px solid var(--line);
}

.learn-map-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 3px;
  border-bottom: 1px solid var(--line);
}

.learn-map-item:hover .learn-map-question {
  color: var(--primary);
}

.learn-map-num {
  flex: 0 0 auto;
  width: 22px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--muted-2);
}

.learn-map-question {
  min-width: 0;
  flex: 1;
  font-size: 11px;
  line-height: 1.4;
  color: var(--text-soft);
  transition: color 0.16s ease;
}

.learn-map-lesson {
  flex: 0 0 auto;
  font-size: 9.5px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

.learn-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.learn-sidebar {
  position: sticky;
  top: calc(var(--topbar-height) + 20px);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - var(--topbar-height) - 40px);
  padding: 15px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.learn-sidebar-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.learn-sidebar-head h2 {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: -0.01em;
}

.learn-sidebar-head p {
  margin-top: 2px;
  font-size: 10.5px;
  color: var(--muted);
}

.learn-sidebar-count {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--primary);
}

.learn-progress-track {
  margin: 10px 0 8px;
  background: var(--surface-3);
  height: 5px;
}

.learn-sidebar-list {
  overflow-y: auto;
  padding-right: 4px;
  scrollbar-width: thin;
}

.learn-module-group {
  margin-top: 12px;
}

.learn-module-title {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 6px;
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
}

.learn-sidebar-link {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  padding: 7px 8px;
  border-radius: 8px;
  transition: background 0.16s ease;
}

.learn-sidebar-link:hover {
  background: var(--surface-2);
}

.learn-sidebar-link.active {
  background: var(--primary-50);
}

.learn-sidebar-num {
  flex: 0 0 auto;
  width: 20px;
  padding-top: 1px;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted-2);
}

.learn-sidebar-link.active .learn-sidebar-num {
  color: var(--primary);
}

.learn-sidebar-title {
  flex: 1;
  min-width: 0;
  font-size: 10.5px;
  line-height: 1.4;
  color: var(--text-soft);
}

.learn-sidebar-link.active .learn-sidebar-title {
  color: var(--primary-700);
  font-weight: 600;
}

[data-theme="dark"] .learn-sidebar-link.active .learn-sidebar-title {
  color: var(--primary);
}

.learn-sidebar-check {
  flex: 0 0 auto;
  font-size: 10px;
  color: var(--success);
}

.learn-detail {
  min-width: 0;
  padding: 30px 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.learn-head {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.learn-meta {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
}

.learn-head h1 {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.learn-subtitle {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--muted);
}

.learn-progress-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
}

.learn-progress-line .progress-track {
  flex: 1;
  height: 5px;
  background: var(--surface-3);
}

.learn-progress-line span {
  flex: 0 0 auto;
  font-size: 10px;
  color: var(--muted-2);
}

.learn-why {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  margin-top: 20px;
  padding: 14px 16px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 14%, transparent);
  border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0;
}

.learn-why svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  margin-top: 1px;
  color: var(--accent-strong);
}

.learn-why strong {
  display: block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.learn-why p {
  margin-top: 3px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text-soft);
}

.learn-block {
  margin-top: 26px;
}

.learn-block h2 {
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: -0.015em;
}

.learn-block > p {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

.learn-block > p + p {
  margin-top: 8px;
}

.learn-block-note {
  color: var(--muted) !important;
  font-size: 12px !important;
}

.learn-term-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.learn-term {
  padding: 12px 13px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.learn-term strong {
  display: block;
  font-size: 12px;
  color: var(--primary);
}

.learn-term p {
  margin-top: 3px;
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--muted);
}

.learn-steps {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin: 13px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: learn-step;
}

.learn-steps li {
  position: relative;
  padding-left: 36px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-soft);
  counter-increment: learn-step;
}

.learn-steps li::before {
  content: counter(learn-step);
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  font-size: 10px;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-50);
  border-radius: 7px;
}

.learn-example,
.learn-exam-tip {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  margin-top: 22px;
  padding: 14px 16px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.learn-example svg,
.learn-exam-tip svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  margin-top: 1px;
  color: var(--accent-strong);
}

.learn-example strong,
.learn-exam-tip strong {
  display: block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.learn-example p,
.learn-exam-tip p {
  margin-top: 3px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-soft);
}

.learn-exam-tip {
  background: var(--primary-50);
  border-color: color-mix(in srgb, var(--primary) 12%, transparent);
}

.learn-exam-tip svg {
  color: var(--primary);
}

.learn-remember {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 13px 0 0;
  padding: 0;
  list-style: none;
}

.learn-remember li {
  position: relative;
  padding-left: 24px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-soft);
}

.learn-remember li::before {
  content: "✓";
  position: absolute;
  top: 1px;
  left: 0;
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  font-size: 9px;
  font-weight: 800;
  color: var(--success);
  background: var(--success-bg);
  border-radius: 50%;
}

.learn-check-item {
  background: var(--surface-2);
}

.learn-exam-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 12px;
}

.learn-exam-question {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.learn-exam-question summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  cursor: pointer;
  list-style: none;
}

.learn-exam-question summary::-webkit-details-marker {
  display: none;
}

.learn-exam-question summary strong {
  min-width: 0;
  flex: 1;
  font-size: 11.5px;
  line-height: 1.4;
  color: var(--text-soft);
}

.learn-exam-open {
  flex: 0 0 auto;
  font-size: 10px;
  font-weight: 600;
  color: var(--primary);
}

.learn-exam-body {
  padding: 0 12px 12px;
}

.learn-exam-body > p {
  padding: 10px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px dashed var(--line);
}

.learn-exam-links {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.lesson-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

/* Legal and footer */
.sidebar-legal-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 10px;
  color: rgba(234, 242, 251, 0.72);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.sidebar-legal-link:hover {
  color: #fff;
}

.site-footer {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 32px 28px;
}

.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  max-width: 820px;
  margin: 0;
  font-size: 10.5px;
  line-height: 1.55;
  color: var(--muted);
}

.site-footer-links {
  display: flex;
  gap: 13px;
  flex-wrap: wrap;
}

.site-footer-links a {
  font-size: 10.5px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

.site-footer-links a:hover {
  text-decoration: underline;
}

.age-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 4px;
  padding: 0 4px;
  font-size: 9px;
  font-weight: 800;
  line-height: 1.6;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
}

.legal-page {
  max-width: 920px;
}

.legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 18px;
  margin-top: -8px;
  font-size: 11px;
  color: var(--muted);
}

.legal-card {
  padding: 30px 34px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.legal-section {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.legal-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.legal-section h2 {
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: -0.015em;
}

.legal-section p {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

.legal-section ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
  padding-left: 18px;
}

.legal-section li {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-soft);
}

.legal-warning {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin-top: 11px;
  padding: 12px 14px;
  background: var(--warning-bg);
  border: 1px solid color-mix(in srgb, var(--warning) 18%, transparent);
  border-radius: 10px;
}

.legal-warning svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  margin-top: 2px;
  color: var(--warning);
}

.legal-warning p {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-soft);
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 11px;
}

.legal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 0 4px;
  font-size: 11px;
  color: var(--muted);
}

.legal-footer a {
  font-weight: 600;
  color: var(--primary);
}

.composer-privacy {
  margin: 0 0 8px;
  font-size: 10.5px;
  line-height: 1.5;
  color: var(--warning);
}

/* Responsive */
@media (max-width: 1180px) {
  .app-shell {
    grid-template-columns: 252px minmax(0, 1fr);
  }

  .app-content {
    padding-left: 24px;
    padding-right: 24px;
  }

  .topbar {
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero {
    padding: 36px 34px 32px;
  }

  .hero-grid {
    gap: 28px;
  }

  .session-layout {
    grid-template-columns: minmax(0, 1fr) 282px;
  }

  .learn-layout {
    grid-template-columns: 270px minmax(0, 1fr);
  }

  .learn-hero {
    padding: 32px 30px 28px;
  }

  .result-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.7fr);
  }
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 278px;
    max-width: 86vw;
    transform: translateX(-104%);
    transition: transform 0.24s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .sidebar.is-open {
    transform: translateX(0);
    box-shadow: 24px 0 60px rgba(0, 0, 0, 0.3);
  }

  .menu-btn {
    display: inline-flex !important;
  }

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

  .hero-visual {
    display: none;
  }

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

  .session-layout {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .chat-card {
    height: 620px;
    max-height: 720px;
  }

  .theory-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .theory-sidebar {
    position: static;
    max-height: 280px;
  }

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

  .result-hero {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .result-actions {
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
  }

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

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

  .learn-hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .learn-progress-panel {
    max-width: 430px;
  }

  .learn-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .learn-sidebar {
    position: static;
    max-height: 300px;
  }

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

  .learn-plan-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .learn-modules {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  :root {
    --topbar-height: 64px;
  }

  .topbar {
    gap: 10px;
    padding: 0 16px;
  }

  .breadcrumb {
    font-size: 11.5px;
  }

  .breadcrumb-root,
  .breadcrumb-sep {
    display: none;
  }

  .ai-badge {
    height: 32px;
    padding: 0 9px;
  }

  .topbar-actions {
    gap: 6px;
  }

  .icon-btn {
    width: 35px;
    height: 35px;
  }

  .app-content {
    padding: 20px 16px 64px;
  }

  .page {
    gap: 18px;
  }

  .page-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 13px;
  }

  .hero {
    padding: 28px 22px 25px;
    border-radius: 20px;
  }

  .hero h1 {
    font-size: clamp(30px, 9vw, 40px);
  }

  .hero-lead {
    font-size: 14px;
  }

  .hero-actions {
    margin-top: 19px;
  }

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

  .hero-meta {
    gap: 7px 14px;
    margin-top: 18px;
    font-size: 10.5px;
  }

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

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

  .stat-icon {
    width: 32px;
    height: 32px;
  }

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

  .stat-label {
    font-size: 9.5px;
  }

  .stat-note {
    display: none;
  }

  .steps-grid,
  .topics-grid,
  .question-grid,
  .form-grid,
  .result-scores {
    grid-template-columns: minmax(0, 1fr);
  }

  .ai-banner {
    align-items: flex-start;
    padding: 17px;
    gap: 12px;
  }

  .ai-banner .btn {
    display: none;
  }

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

  .section-title {
    font-size: 21px;
  }

  .question-toolbar {
    align-items: stretch;
  }

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

  .filter-chips {
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }

  .chip {
    flex: 0 0 auto;
  }

  .theory-detail {
    padding: 22px 18px;
  }

  .theory-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .session-header {
    padding: 16px;
  }

  .session-title-row {
    flex-direction: column;
    gap: 10px;
  }

  .stage-step span:last-child {
    font-size: 10px;
  }

  .stage-step:not(:last-child)::after {
    margin: 0 7px;
  }

  .chat-card {
    height: auto;
    min-height: 540px;
    max-height: 680px;
  }

  .chat-scroll {
    padding: 16px 14px;
  }

  .message {
    max-width: 95%;
  }

  .bubble {
    padding: 10px 12px;
  }

  .bubble-text {
    font-size: 13px;
  }

  .composer {
    padding: 10px 12px 12px;
  }

  .composer-hint {
    display: none;
  }

  .session-rail {
    grid-template-columns: minmax(0, 1fr);
  }

  .result-hero {
    grid-template-columns: minmax(0, 1fr);
    justify-items: start;
    gap: 18px;
    padding: 24px 20px;
  }

  .grade-ring {
    width: 104px;
    height: 104px;
  }

  .grade-value {
    font-size: 34px;
  }

  .result-actions {
    width: 100%;
  }

  .result-actions .btn {
    width: 100%;
  }

  .settings-card {
    padding: 18px;
  }

  .settings-card-head {
    flex-direction: column;
    gap: 10px;
  }

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

  .danger-zone {
    flex-direction: column;
    align-items: flex-start;
  }

  .learn-hero {
    padding: 26px 20px 24px;
    border-radius: 20px;
  }

  .learn-hero h1 {
    font-size: clamp(30px, 9vw, 42px);
  }

  .learn-hero p {
    font-size: 14px;
  }

  .learn-progress-big {
    font-size: 42px;
  }

  .learn-progress-panel {
    max-width: none;
  }

  .learn-how-grid,
  .learn-plan-grid,
  .learn-term-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .learn-map-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .learn-detail {
    padding: 22px 18px;
  }

  .learn-sidebar {
    max-height: 260px;
  }

  .learn-module-time {
    display: none;
  }

  .learn-block h2 {
    font-size: 19px;
  }

  .lesson-actions .btn {
    flex: 1 1 auto;
  }

  .site-footer {
    padding: 0 16px 24px;
  }

  .site-footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .legal-card {
    padding: 22px 18px;
  }

  .legal-section h2 {
    font-size: 19px;
  }

  .legal-meta {
    margin-top: 0;
  }

  .modal-head,
  .modal-body,
  .modal-actions {
    padding-left: 18px;
    padding-right: 18px;
  }
}

@media (max-width: 440px) {
  .ai-badge span:last-child {
    display: none;
  }

  .ai-badge {
    width: 32px;
    padding: 0;
    justify-content: center;
  }

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

  .stat-note {
    display: block;
  }

  .btn {
    padding-left: 13px;
    padding-right: 13px;
  }

  .stage-step span:last-child {
    display: none;
  }

  .stage-step:not(:last-child)::after {
    width: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}