/* ============================================================
   IELTS Online — modern SaaS design system
   ============================================================ */

:root {
  --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Neutral scale */
  --n-0: #ffffff;
  --n-50: #f7f8fb;
  --n-100: #eef0f6;
  --n-200: #e2e5ee;
  --n-300: #cdd2e0;
  --n-400: #a8aec2;
  --n-500: #7c8299;
  --n-600: #5b6178;
  --n-700: #40465c;
  --n-800: #262a3b;
  --n-900: #14151f;

  --bg: var(--n-50);
  --surface: var(--n-0);
  --surface-2: var(--n-100);
  --border: var(--n-200);
  --border-strong: var(--n-300);

  --ink: var(--n-900);
  --ink-soft: var(--n-600);
  --ink-faint: var(--n-500);

  --primary: #4f46e5;
  --primary-dark: #4034c7;
  --primary-darker: #322aa3;
  --primary-soft: #eef0fe;
  --primary-ring: rgba(79, 70, 229, .18);
  --accent: #0891b2;
  --accent-soft: #e3f6fa;

  --success: #059669;
  --success-dark: #047857;
  --success-soft: #e6f8f1;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --danger-soft: #fdecec;
  --warning: #b45309;
  --warning-dark: #92400e;
  --warning-soft: #fef3e2;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 2px rgba(20, 21, 31, .06);
  --shadow: 0 1px 2px rgba(20, 21, 31, .04), 0 6px 20px rgba(20, 21, 31, .06);
  --shadow-lg: 0 12px 32px rgba(20, 21, 31, .10), 0 4px 10px rgba(20, 21, 31, .05);
  --shadow-xl: 0 24px 64px rgba(20, 21, 31, .18);

  --ease: cubic-bezier(.2, .8, .2, 1);

  font-size: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1, h2, h3, h4 { font-weight: 750; letter-spacing: -0.022em; color: var(--ink); line-height: 1.25; }
h1 { font-size: 1.95rem; margin: 0 0 6px; }
h2 { font-size: 1.3rem; margin: 34px 0 14px; }
h3 { font-size: 1.08rem; margin: 0 0 4px; }
p.lede { color: var(--ink-soft); margin-top: 0; }
code { font-family: var(--font-mono); background: var(--surface-2); padding: 2px 6px; border-radius: 5px; font-size: .88em; }

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

/* ---------------- Top navigation ---------------- */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 32px;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 10px;
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 1.08rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 30px; height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, #6366f1, #4034c7);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 800;
  box-shadow: 0 4px 12px rgba(79, 70, 229, .38), inset 0 1px 0 rgba(255,255,255,.2);
}
.brand span { color: var(--primary); }
.topbar nav { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }
.topbar nav a:not(.btn-nav) {
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 8px 12px;
  border-radius: 999px;
  transition: background .15s var(--ease), color .15s var(--ease);
}
.topbar nav a:not(.btn-nav):hover { background: var(--surface-2); color: var(--ink); }
.btn-nav {
  background: var(--primary);
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  box-shadow: var(--shadow-sm);
  transition: background .15s ease, transform .1s ease;
}
.btn-nav:hover { background: var(--primary-dark); transform: translateY(-1px); }
.track-pill {
  background: var(--primary-soft);
  color: var(--primary-dark);
  padding: 5px 13px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: .01em;
}

.page { max-width: 1040px; margin: 0 auto; padding: 40px 24px 70px; }
.page.narrow { max-width: 460px; }
.page.wide { max-width: 1240px; }

/* ---------------- Cards ---------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px 26px;
  margin-bottom: 16px;
  transition: box-shadow .18s var(--ease), border-color .18s var(--ease);
}

.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
.grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 700px) { .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; } }

/* ---------------- Forms ---------------- */
label { display: block; font-weight: 600; font-size: 0.87rem; margin-bottom: 6px; color: var(--ink); }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=number], select, textarea {
  width: 100%;
  padding: 10.5px 13px;
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--n-0);
  color: var(--ink);
  transition: border-color .15s ease, box-shadow .15s ease;
}
input:hover, select:hover, textarea:hover { border-color: var(--n-400); }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-ring);
}
textarea { resize: vertical; }
.field { margin-bottom: 18px; }
.field .hint { font-size: .8rem; color: var(--ink-faint); margin-top: 5px; }
.radio-row { display: flex; gap: 20px; flex-wrap: wrap; }
.radio-row label { font-weight: 500; display: flex; align-items: center; gap: 7px; margin-bottom: 0; }

/* ---------------- Buttons ---------------- */
button, .btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10.5px 19px;
  border-radius: 10px;
  font-size: 0.93rem;
  font-weight: 640;
  font-family: inherit;
  cursor: pointer;
  transition: background .15s var(--ease), transform .08s var(--ease), box-shadow .15s var(--ease);
  box-shadow: 0 1px 2px rgba(79, 70, 229, .18);
}
button:hover, .btn:hover { background: var(--primary-dark); text-decoration: none; transform: translateY(-1px); box-shadow: 0 8px 18px rgba(79, 70, 229, .28); }
button:active, .btn:active { transform: translateY(0); box-shadow: 0 1px 2px rgba(79, 70, 229, .18); }
button:disabled, .btn:disabled { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }
.btn.secondary {
  background: var(--surface); color: var(--ink);
  border: 1.5px solid var(--border-strong);
  box-shadow: none;
}
.btn.secondary:hover { background: var(--surface-2); border-color: var(--n-400); color: var(--ink); box-shadow: none; }
.btn.danger { background: var(--danger); box-shadow: 0 1px 2px rgba(220,38,38,.2); }
.btn.danger:hover { background: var(--danger-dark); box-shadow: 0 8px 18px rgba(220,38,38,.25); }
.btn.small, .btn.sm { padding: 7px 13px; font-size: .82rem; border-radius: 8px; }
.btn.block { display: flex; width: 100%; justify-content: center; }

/* ---------------- Alerts ---------------- */
.alert { padding: 13px 16px; border-radius: var(--radius-sm); margin-bottom: 18px; font-size: 0.92rem; border: 1px solid transparent; font-weight: 500; display: flex; align-items: flex-start; gap: 9px; }
.alert.error { background: var(--danger-soft); color: var(--danger-dark); }
.alert.success { background: var(--success-soft); color: var(--success-dark); }
.alert.info { background: var(--primary-soft); color: var(--primary-dark); }
.alert.warning { background: var(--warning-soft); color: var(--warning-dark); }

/* ---------------- Tables ---------------- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { color: var(--ink-faint); font-weight: 700; font-size: 0.73rem; text-transform: uppercase; letter-spacing: .05em; }
tbody tr { transition: background .12s ease; }
tbody tr:hover { background: var(--surface-2); }
tr:last-child td { border-bottom: none; }

/* ---------------- Stat tiles ---------------- */
.stat { text-align: center; }
.stat .stat-icon {
  width: 46px; height: 46px; border-radius: 13px;
  background: var(--primary-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; margin: 0 auto 12px;
}
.stat .num { font-size: 2.2rem; font-weight: 800; color: var(--ink); letter-spacing: -0.03em; }
.stat .lbl { color: var(--ink-soft); font-size: 0.85rem; margin-top: 2px; }

/* ---------------- Badges ---------------- */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3.5px 11px; border-radius: 999px; font-size: 0.72rem; font-weight: 700; letter-spacing: .03em; text-transform: uppercase; }
.badge.mock { background: var(--danger-soft); color: var(--danger-dark); }
.badge.practice { background: var(--primary-soft); color: var(--primary-dark); }

.footer { text-align: center; color: var(--ink-faint); font-size: 0.8rem; padding: 28px 20px 40px; }

/* ---------------- Landing hero ---------------- */
.hero {
  text-align: center;
  padding: 60px 32px;
  background:
    radial-gradient(90% 140% at 15% -20%, rgba(79,70,229,.14) 0%, transparent 55%),
    radial-gradient(90% 140% at 85% -10%, rgba(8,145,178,.10) 0%, transparent 55%),
    var(--n-50);
  border: 1px solid var(--border);
}
.hero h1 { font-size: 2.4rem; max-width: 680px; margin: 0 auto 14px; }
.hero p.lede { max-width: 580px; margin: 0 auto 24px; font-size: 1.04rem; }

/* ---------------- Test selection ---------------- */
.mock-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: linear-gradient(135deg, #4f46e5 0%, #6423c9 100%);
  color: #fff;
  border: none;
  position: relative;
  overflow: hidden;
}
.mock-card::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(60% 120% at 100% 0%, rgba(255,255,255,.14), transparent 60%);
  pointer-events: none;
}

/* ---------------- Upsell banners (paid-feature teasers on free-tier list pages) ---------------- */
.upsell-banner {
  background: linear-gradient(135deg, #4f46e5 0%, #6423c9 100%);
  color: #fff;
  border: none;
  position: relative;
  overflow: hidden;
}
.upsell-banner::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(70% 140% at 90% -10%, rgba(255,255,255,.16), transparent 60%);
  pointer-events: none;
}
.upsell-banner h2 { color: #fff; margin-top: 0; position: relative; }
.upsell-banner p.lede { color: rgba(255,255,255,.86); position: relative; }
.upsell-banner .btn { background: #fff; color: var(--primary-dark); box-shadow: none; position: relative; }
.upsell-banner .btn:hover { background: #f2f2ff; }
.mock-card-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: rgba(255,255,255,.18);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; flex-shrink: 0;
}
.mock-card-body { flex: 1; }
.mock-card-body h3 { color: #fff; margin-bottom: 4px; }
.mock-card-body p.lede { color: rgba(255,255,255,.82); }
.mock-card .btn { background: #fff; color: var(--primary-dark); box-shadow: none; flex-shrink: 0; }
.mock-card .btn:hover { background: #f2f2ff; transform: translateY(-1px); }
@media (max-width: 640px) { .mock-card { flex-direction: column; align-items: stretch; text-align: center; } }

.practice-list { margin-bottom: 26px; }
.practice-list summary {
  cursor: pointer;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 4px;
  list-style: none;
}
.practice-list summary::-webkit-details-marker { display: none; }
.practice-list summary::before { content: '▸ '; color: var(--primary); }
.practice-list[open] summary::before { content: '▾ '; }
.practice-row {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 18px 22px;
}
.practice-row h4 { margin: 0 0 4px; font-size: 1rem; }
@media (max-width: 640px) { .practice-row { flex-direction: column; align-items: stretch; text-align: center; } }

/* ---------------- Exam-taking layout (real IELTS-CBT-style replica) ---------------- */
body.exam-mode { background: var(--n-100); }
body.exam-mode main.page { max-width: none; padding: 0 0 96px; }
.exam-topbar { padding: 9px 22px; }
.exam-topbar .exam-topbar-note { color: var(--ink-soft); font-size: .86rem; }
.exam-topbar .exam-topbar-note a { font-weight: 700; }

.exam-header {
  position: sticky; top: 0; z-index: 16;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  background: var(--n-900); color: #fff; padding: 12px 26px;
  box-shadow: var(--shadow);
  gap: 12px;
}
.exam-header .exam-title { font-size: .88rem; opacity: .9; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.exam-header .exam-title strong { font-weight: 700; }
.exam-header .timer {
  font-variant-numeric: tabular-nums;
  font-weight: 800; font-size: 1.15rem;
  background: rgba(255,255,255,.12);
  padding: 7px 20px; border-radius: 999px;
  letter-spacing: .03em;
  justify-self: center;
  transition: background .2s ease, color .2s ease;
}
.exam-header .timer::before { content: '⏱ '; }
.exam-header .timer.warn { background: rgba(217, 119, 6, .35); color: #fed7aa; }
.exam-header .timer.low { background: rgba(220, 38, 38, .4); color: #ffd7d3; animation: examPulse 1s ease-in-out infinite; }
@keyframes examPulse { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }
.exam-header .exam-actions { justify-self: end; display: flex; gap: 8px; }
.exam-header .exam-actions button { background: rgba(255,255,255,.1); color: #fff; box-shadow: none; padding: 7px 14px; font-size: .82rem; }
.exam-header .exam-actions button:hover { background: rgba(255,255,255,.2); transform: none; box-shadow: none; }
@media (max-width: 640px) {
  .exam-header { grid-template-columns: auto auto; }
  .exam-header .exam-title { display: none; }
  .exam-header .exam-actions { grid-column: 2; }
}

.exam-help-panel {
  max-width: 1320px; margin: 14px auto 0; padding: 0 24px;
}
.exam-help-panel .card { background: var(--primary-soft); border-color: var(--primary-ring); font-size: .88rem; }

.exam-body { max-width: 1320px; margin: 0 auto; padding: 20px 24px 0; }
.exam-split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
@media (max-width: 900px) { .exam-split { grid-template-columns: 1fr; } }
.passage-pane, .questions-pane {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 22px 24px; max-height: calc(100vh - 150px); overflow-y: auto;
  position: sticky; top: 74px;
}
.questions-pane { position: static; }
.passage-pane h3 { margin-top: 0; }
.passage-pane p { white-space: pre-line; color: var(--ink); }
.section-intro { max-width: 1320px; margin: 0 auto; padding: 4px 24px 0; }
.section-intro h2 { margin: 22px 0 4px; }

.q-group { margin-bottom: 24px; padding-bottom: 20px; border-bottom: 1px dashed var(--border); }
.q-group:last-child { border-bottom: none; }
.q-group-label { font-weight: 700; margin-bottom: 12px; color: var(--primary-dark); font-size: 0.92rem; white-space: pre-line; }
.q-item {
  margin-bottom: 6px; padding: 12px 14px 14px; border-radius: var(--radius-sm);
  scroll-margin-top: 90px;
  transition: background .5s ease, box-shadow .2s ease;
}
.q-item.jump-highlight { background: var(--primary-soft); box-shadow: 0 0 0 2px var(--primary-ring); }
.q-item-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.q-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border-radius: 7px;
  background: var(--surface-2); color: var(--ink-soft);
  font-weight: 800; font-size: .78rem; flex-shrink: 0;
  transition: background .15s ease, color .15s ease;
}
.q-item.is-answered .q-badge { background: var(--success-soft); color: var(--success-dark); }
.flag-btn {
  background: none; border: 1.5px solid var(--border-strong); color: var(--ink-faint);
  width: 26px; height: 26px; border-radius: 999px; padding: 0; font-size: .82rem;
  box-shadow: none; flex-shrink: 0; line-height: 1;
}
.flag-btn:hover { background: var(--warning-soft); border-color: var(--warning); color: var(--warning-dark); transform: none; box-shadow: none; }
.flag-btn.is-flagged { background: var(--warning); border-color: var(--warning); color: #fff; }
.q-item p { margin: 0 0 8px; }
.q-item input[type=text] { max-width: 320px; display: inline-block; }
.q-choice {
  display: block; margin: 5px 0; font-weight: 500; padding: 8px 10px;
  border-radius: 8px; transition: background .12s ease;
}
.q-choice:hover { background: var(--primary-soft); }
.audio-box { text-align: center; padding: 30px 10px; }
.audio-box button { font-size: 1.02rem; padding: 14px 26px; border-radius: 999px; }
.audio-status { margin-top: 14px; color: var(--ink-soft); font-size: 0.9rem; }
.charged-audio-box { text-align: center; padding: 24px 10px; }
.charged-audio-box button { font-size: 1.02rem; padding: 14px 26px; border-radius: 999px; }

/* ---------------- Bottom question navigator (like the real exam's part/question palette) ---------------- */
.exam-navbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 17;
  background: #fff; border-top: 1px solid var(--border);
  box-shadow: 0 -6px 20px rgba(20,21,31,.08);
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
}
.exam-navbar .nav-scroll {
  flex: 1; display: flex; gap: 6px; overflow-x: auto; padding: 2px;
  scrollbar-width: thin;
}
.exam-navbar .nav-part-label {
  display: flex; align-items: center; padding: 0 8px; color: var(--ink-faint);
  font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em;
  flex-shrink: 0;
}
.nav-q-btn {
  flex-shrink: 0; width: 32px; height: 32px; border-radius: 8px;
  background: var(--surface-2); border: 1.5px solid transparent; color: var(--ink-soft);
  font-weight: 700; font-size: .82rem; box-shadow: none; padding: 0;
  position: relative;
}
.nav-q-btn:hover { background: var(--primary-soft); color: var(--primary-dark); transform: none; box-shadow: none; }
.nav-q-btn.is-answered { background: var(--success-soft); color: var(--success-dark); }
.nav-q-btn.is-answered::after {
  content: ''; position: absolute; left: 7px; right: 7px; bottom: 4px; height: 2px;
  background: var(--success); border-radius: 2px;
}
.nav-q-btn.is-flagged { border-radius: 999px; border-color: var(--warning); background: var(--warning-soft); color: var(--warning-dark); }
.nav-q-btn.is-current { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-ring); }
.exam-navbar .nav-summary { flex-shrink: 0; font-size: .78rem; color: var(--ink-soft); padding: 0 4px; white-space: nowrap; }
.exam-navbar .btn.review-btn { flex-shrink: 0; }
@media (max-width: 640px) {
  .exam-navbar .nav-summary { display: none; }
  .nav-q-btn { width: 28px; height: 28px; font-size: .76rem; }
}

/* ---------------- Review-before-submit overlay ---------------- */
.review-overlay {
  position: fixed; inset: 0; z-index: 40;
  background: rgba(15, 16, 26, .55);
  display: flex; align-items: flex-end; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .18s ease;
}
.review-overlay.open { opacity: 1; pointer-events: auto; }
.review-panel {
  background: var(--surface); border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  width: 100%; max-width: 760px; max-height: 86vh; overflow-y: auto;
  padding: 26px 28px 28px; box-shadow: var(--shadow-xl);
  transform: translateY(24px); transition: transform .2s var(--ease);
}
.review-overlay.open .review-panel { transform: translateY(0); }
.review-panel h2 { margin-top: 0; }
.review-stats { display: flex; gap: 18px; margin: 14px 0 20px; flex-wrap: wrap; }
.review-stats .rs-item { display: flex; align-items: center; gap: 7px; font-size: .88rem; color: var(--ink-soft); font-weight: 600; }
.review-stats .rs-dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.review-stats .rs-dot.answered { background: var(--success); }
.review-stats .rs-dot.unanswered { background: var(--n-300); }
.review-stats .rs-dot.flagged { background: var(--warning); border-radius: 999px; }
.review-grid { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 24px; }
.review-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
.review-actions .btn.secondary { margin-right: auto; }

/* ---------------- Results ---------------- */
.band-hero { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.band-hero .band-num {
  font-size: 3.4rem; font-weight: 800; color: var(--primary-dark); letter-spacing: -0.04em;
  background: var(--primary-soft);
  width: 110px; height: 110px; border-radius: 24px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.breakdown-bar { background: #eef0f4; border-radius: 999px; overflow: hidden; height: 9px; margin-top: 5px; }
.breakdown-bar > span { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, #6366f1, #4f46e5); transition: width .4s ease; }
.review-row.correct { border-left: 4px solid var(--success); }
.review-row.incorrect { border-left: 4px solid var(--danger); }
.review-row {
  padding: 12px 16px; margin-bottom: 9px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 0.92rem;
}

/* ---------------- Extra badges / pills ---------------- */
.badge.free { background: var(--success-soft); color: var(--success); }
.badge.locked { background: var(--warning-soft); color: var(--warning); }
.badge.open { background: var(--warning-soft); color: var(--warning); }
.badge.resolved { background: var(--success-soft); color: var(--success); }
.badge.paid { background: var(--success-soft); color: var(--success); }
.badge.free-plan { background: var(--danger-soft); color: var(--danger); }
.badge.admin { background: var(--primary-soft); color: var(--primary-dark); }
.badge.manager { background: #eef2ff; color: #4338ca; }
.track-pill.plan-paid { background: var(--success-soft); color: var(--success); }
.track-pill.plan-free { background: var(--warning-soft); color: var(--warning); }
.track-pill.plan-expired { background: var(--danger-soft); color: var(--danger); }
.badge.pending { background: var(--warning-soft); color: var(--warning); }
.badge.approved { background: var(--success-soft); color: var(--success); }
.badge.denied { background: var(--danger-soft); color: var(--danger); }
.badge.charged { background: var(--danger-soft); color: var(--danger-dark); }
.badge.unread-count { background: var(--danger); color: #fff; padding: 1px 7px; font-size: 0.68rem; margin-left: 4px; }
.badge.exam_update { background: var(--primary-soft); color: var(--primary-dark); }
.badge.study_abroad { background: var(--success-soft); color: var(--success); }
.badge.general { background: var(--warning-soft); color: var(--warning); }

/* ---------------- Admin shell (sidebar layout for admin & manager) ---------------- */
:root {
  --sb-bg: #171a2b;
  --sb-bg-2: #1f2338;
  --sb-ink: #e8e9f5;
  --sb-ink-soft: #9297b8;
  --sb-border: rgba(255,255,255,.08);
  --sb-width: 254px;
}
body.has-admin-shell { background: var(--bg); }
.admin-shell { display: flex; min-height: 100vh; align-items: stretch; }
.admin-sidebar {
  width: var(--sb-width); flex-shrink: 0;
  background: linear-gradient(180deg, var(--sb-bg) 0%, var(--sb-bg-2) 100%);
  color: var(--sb-ink);
  padding: 18px 14px 16px;
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
  z-index: 30;
}
.admin-brand { color: #fff; padding: 6px 8px 18px; }
.admin-brand span { color: #a5b4fc; }
.sidebar-section-label {
  color: var(--sb-ink-soft); font-size: .68rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: .08em; padding: 14px 10px 6px;
}
.sidebar-nav { display: flex; flex-direction: column; gap: 1px; }
.sidebar-nav a {
  color: var(--sb-ink); font-weight: 560; font-size: .89rem;
  padding: 9px 10px; border-radius: 9px;
  display: flex; align-items: center; gap: 9px;
  transition: background .13s ease, color .13s ease;
}
.sidebar-nav a:hover { background: rgba(255,255,255,.07); color: #fff; }
.sidebar-nav a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(79,70,229,.4); }
.sidebar-foot { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--sb-border); }
.sidebar-user { display: flex; align-items: center; gap: 10px; padding: 6px 8px 12px; }
.sidebar-user-avatar {
  width: 34px; height: 34px; border-radius: 10px; flex-shrink: 0;
  background: linear-gradient(135deg, #6366f1, #4034c7);
  color: #fff; font-weight: 800; font-size: .95rem;
  display: flex; align-items: center; justify-content: center;
}
.sidebar-user-name { font-size: .87rem; font-weight: 650; color: #fff; margin-bottom: 3px; }
.admin-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.admin-topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 28px; background: rgba(255,255,255,.9); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 15;
}
.admin-topbar-title { font-weight: 750; font-size: 1.05rem; letter-spacing: -0.01em; }
.admin-main .page { flex: 1; max-width: 1240px; }
.sidebar-scrim { display: none; }

@media (max-width: 960px) {
  .admin-sidebar {
    position: fixed; left: 0; top: 0; height: 100dvh;
    transform: translateX(-100%);
    transition: transform .22s var(--ease);
    box-shadow: var(--shadow-xl);
  }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-topbar .nav-toggle { display: inline-block; }
  .sidebar-scrim.show {
    display: block; position: fixed; inset: 0; background: rgba(10,10,20,.45);
    z-index: 25; backdrop-filter: blur(1px);
  }
}
@media (min-width: 961px) { .admin-topbar .nav-toggle { display: none; } }

.admin-toolbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }
.row-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.row-actions form { display: inline; }
.row-actions .btn, .row-actions button { padding: 6px 12px; font-size: 0.82rem; border-radius: 8px; }
table.compact th, table.compact td { padding: 9px 10px; font-size: 0.86rem; }
.section-block { border: 1px dashed var(--border-strong); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; }
.section-block h4 { margin-top: 0; }
.q-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.q-row:last-child { border-bottom: none; }
.q-row .q-meta { color: var(--ink-soft); font-size: 0.82rem; }

/* ---------------- Pricing / plans ---------------- */
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 700px) { .pricing-grid { grid-template-columns: 1fr; } }
.price-card { text-align: center; }
.price-card .price { font-size: 2.4rem; font-weight: 800; color: var(--ink); margin: 10px 0; letter-spacing: -0.03em; }
.price-card .price span { font-size: 1rem; color: var(--ink-soft); font-weight: 600; }
.price-card ul { list-style: none; padding: 0; margin: 16px 0 22px; text-align: left; }
.price-card li { padding: 6px 0; color: var(--ink-soft); font-size: 0.9rem; }
.price-card li::before { content: '✓ '; color: var(--success); font-weight: 700; }
.demo-banner { background: var(--warning-soft); color: var(--warning); padding: 10px 14px; border-radius: var(--radius-sm); font-size: 0.85rem; font-weight: 600; margin-bottom: 14px; }

/* ---------------- Support tickets ---------------- */
.ticket-row { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--border); gap: 12px; }
.ticket-row:last-child { border-bottom: none; }
.msg-bubble { padding: 13px 16px; border-radius: var(--radius); margin-bottom: 12px; max-width: 80%; font-size: 0.92rem; }
.msg-bubble.student { background: var(--primary-soft); margin-right: auto; }
.msg-bubble.staff { background: #f1f2f6; margin-left: auto; }
.msg-bubble.ai { background: linear-gradient(135deg, #f4f1ff, #eef0fe); border: 1px solid var(--primary-ring); margin-right: auto; white-space: pre-line; }
.msg-bubble .msg-meta { font-size: 0.74rem; color: var(--ink-faint); margin-bottom: 4px; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; }

/* ---------------- AI chat (English Improvement) ---------------- */
.chat-thread { max-height: 55vh; overflow-y: auto; padding-right: 4px; }

/* ---------------- Study notes ---------------- */
.note-card.locked { opacity: 0.6; }
.note-content h3 { margin-top: 22px; color: var(--primary-dark); }
.note-content h3:first-child { margin-top: 0; }
.note-content ul { padding-left: 22px; margin: 10px 0; }
.note-content li { margin-bottom: 6px; }
.note-content p { margin: 0 0 14px; }
.note-quiz-feedback { margin-top: 8px; padding: 8px 12px; border-radius: var(--radius-sm); font-size: 0.86rem; }
.note-quiz-feedback.correct { background: var(--success-soft); color: var(--success); }
.note-quiz-feedback.incorrect { background: var(--danger-soft); color: var(--danger); }

/* ---------------- Video lectures ---------------- */
.video-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .video-grid { grid-template-columns: 1fr; } }
.video-embed { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: var(--radius-sm); background: #000; margin-bottom: 12px; }
.video-embed iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }

/* ---------------- Responsive nav (hamburger below ~860px) ---------------- */
.nav-toggle {
  display: none;
  background: none;
  border: 1.5px solid var(--border-strong);
  color: var(--ink);
  font-size: 1.2rem;
  line-height: 1;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  box-shadow: none;
}
.nav-toggle:hover { background: var(--primary-soft); border-color: var(--primary); transform: none; box-shadow: none; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-block; }
  .topbar nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    order: 3;
    gap: 2px;
    padding-top: 8px;
  }
  .topbar nav.open { display: flex; }
  .topbar nav a, .topbar nav .track-pill { width: 100%; text-align: left; box-sizing: border-box; }
  .topbar nav a:not(.btn-nav) { padding: 12px 14px; }
  .btn-nav { text-align: center; }
}

/* ---------------- General small-screen polish ---------------- */
@media (max-width: 640px) {
  h1 { font-size: 1.5rem; }
  .hero h1 { font-size: 1.7rem; }
  .page { padding: 24px 16px 50px; }
  .card { padding: 20px 18px; }
  .band-hero .band-num { width: 84px; height: 84px; font-size: 2.4rem; }
  .msg-bubble { max-width: 92%; }
}

/* ---------------- Quick Wrap (tips checklist) ---------------- */
.wrap-progress-track {
  width: 100%; height: 10px; background: var(--n-100); border-radius: 999px;
  overflow: hidden; margin-top: 10px;
}
.wrap-progress-track.small { height: 7px; margin-top: 8px; }
.wrap-progress-fill {
  height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 999px; transition: width .25s var(--ease);
}
.wrap-overall-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.wrap-overall-pct { font-size: 1.6rem; font-weight: 800; color: var(--primary); letter-spacing: -0.02em; }
.wrap-category-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.wrap-category-right { display: flex; align-items: center; gap: 10px; }
.wrap-count { font-size: 0.84rem; font-weight: 700; color: var(--ink-soft); white-space: nowrap; }
.wrap-reset-btn { padding: 5px 11px; font-size: 0.78rem; border-radius: 8px; }
.wrap-tip-list { list-style: none; margin: 14px 0 0; padding: 0; }
.wrap-tip-item {
  padding: 10px 4px; border-bottom: 1px solid var(--border);
  position: relative;
}
.wrap-tip-item:last-child { border-bottom: none; }
.wrap-tip-item label {
  display: flex; align-items: flex-start; gap: 10px; cursor: pointer;
  font-weight: 500; margin: 0;
}
.wrap-tip-item input[type="checkbox"] {
  margin-top: 3px; width: 18px; height: 18px; flex-shrink: 0; accent-color: var(--primary); cursor: pointer;
}
.wrap-tip-text { color: var(--ink); line-height: 1.5; transition: color .15s var(--ease); }
.wrap-tip-item.checked .wrap-tip-text { color: var(--ink-faint); text-decoration: line-through; text-decoration-color: var(--border-strong); }
.wrap-tip-note {
  display: inline-block; margin-left: 8px; font-size: 0.76rem; font-weight: 600;
  color: var(--danger); background: var(--danger-soft); padding: 2px 8px; border-radius: 999px;
}
.card.wrap-overall { background: linear-gradient(135deg, var(--primary-soft), var(--accent-soft)); border-color: var(--primary-ring); }

/* Horizontally scrollable tables on narrow screens, without changing markup */
@media (max-width: 700px) {
  table { display: block; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
  table.compact { min-width: 640px; }
}