/* LifenLearn — learner-facing theme (Design System handoff).
   Loaded ONLY by the learner + auth layouts, layered over app.css, so the
   admin panel (which links app.css alone) is unaffected.
   Fonts are self-hosted via fonts.css (no third-party requests). */

:root {
  /* ---- Brand: Violet (primary) ---- */
  --violet-900:#34004F; --violet-800:#55008A; --violet-700:#7300C2; --violet-600:#9000F0;
  --violet-500:#A733F3; --violet-400:#C06FF6; --violet-300:#D7A4F9; --violet-200:#EAD1FC;
  --violet-100:#F4E6FE; --violet-50:#FBF4FF;
  /* ---- Brand: Blue (accent) ---- */
  --blue-800:#0000A3; --blue-700:#0000CC; --blue-600:#0000FF; --blue-500:#3A3AFF;
  --blue-300:#9E9EFF; --blue-100:#E6E6FF; --blue-50:#F1F1FF;
  /* ---- Neutral ink (faint violet cast) ---- */
  --ink-950:#100D17; --ink-900:#1A1523; --ink-800:#2A2536; --ink-700:#3E384C;
  --ink-600:#574F68; --ink-500:#726A83; --ink-400:#948DA3; --ink-300:#BCB6C8;
  --ink-200:#E1DDE9; --ink-100:#F0EDF5; --ink-50:#F8F6FB; --white:#FFFFFF;
  /* ---- Semantic ---- */
  --green-600:#1E9E6A; --green-100:#E1F5EC; --amber-600:#C98A00; --amber-100:#FBF0D6;
  --red-600:#E5484D; --red-100:#FCE7E8;

  /* ---- Aliases ---- */
  --brand:var(--violet-600); --brand-strong:var(--violet-700); --brand-soft:var(--violet-100); --brand-tint:var(--violet-50);
  --accent:var(--blue-600); --accent-strong:var(--blue-700); --accent-soft:var(--blue-100);
  --text-heading:var(--ink-900); --text-body:var(--ink-700); --text-muted:var(--ink-500);
  --text-link:var(--violet-700); --text-link-hover:var(--violet-600);
  --surface:var(--white); --surface-alt:var(--ink-50); --surface-tint:var(--violet-50); --surface-card:var(--white);
  --border:var(--ink-200); --border-strong:var(--ink-300); --border-brand:var(--violet-300);
  --focus-ring:var(--violet-500);
  --success:var(--green-600); --success-soft:var(--green-100);
  --warning:var(--amber-600); --warning-soft:var(--amber-100);
  --danger:var(--red-600); --danger-soft:var(--red-100);

  /* ---- Type ---- */
  --font-display:'Newsreader','Noto Serif Devanagari',Georgia,'Times New Roman',serif;
  --font-body:'Nunito Sans','Noto Sans Devanagari',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,monospace;

  /* ---- Radius / shadow / motion ---- */
  --radius-xs:4px; --radius-sm:8px; --radius-md:12px; --radius-lg:16px; --radius-xl:24px; --radius-pill:999px;
  --shadow-xs:0 1px 2px rgba(26,21,35,.06);
  --shadow-sm:0 2px 8px rgba(26,21,35,.07);
  --shadow-md:0 6px 20px rgba(26,21,35,.08);
  --shadow-lg:0 16px 40px rgba(52,0,79,.12);
  --shadow-brand:0 10px 30px rgba(144,0,240,.22);
  --ease-out:cubic-bezier(0.22,1,0.36,1); --dur-fast:120ms; --dur-base:220ms;

  /* ============ Remap the app's semantic tokens onto the design ============ */
  --violet:var(--brand);
  --indigo:var(--brand);
  --teal:var(--accent);
  --teal-600:var(--accent-strong);
  --bg:var(--ink-50);
  --card:var(--surface);
  --ink:var(--ink-800);
  --muted:var(--text-muted);
  --line:var(--border);
  --ok:var(--success); --ok-bg:var(--success-soft);
  --err:var(--danger); --err-bg:var(--danger-soft);
  --info:var(--blue-700); --info-bg:var(--blue-50);
  --amber:var(--warning); --amber-bg:var(--warning-soft);
  --radius:var(--radius-lg);
  --shadow:0 1px 2px rgba(26,21,35,.05), 0 10px 26px rgba(52,0,79,.06);
  --font:var(--font-body);
}

/* ---------- Base ---------- */
body { background: linear-gradient(180deg, var(--violet-50), var(--surface) 240px); color: var(--text-body); }
h1,h2,h3,h4,.page-head h1,.course-card .ct,.auth-card .logo {
  font-family: var(--font-display); color: var(--text-heading); letter-spacing: -0.01em; text-wrap: balance;
}
h1,h2,h3,h4 { font-weight: 600; }
a { color: var(--text-link); }
a:hover { color: var(--text-link-hover); text-underline-offset: 2px; }
:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: var(--radius-xs); }
::selection { background: var(--violet-200); color: var(--ink-900); }
.mono { font-family: var(--font-mono); }

/* ---------- Header (light, glassy, sticky) ---------- */
.site-header {
  background: rgba(255,255,255,0.82); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  color: var(--ink-900); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-xs);
}
.site-header .brand { color: var(--ink-900); font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; }
.site-header .brand .n { color: var(--brand); }
.site-header .brand-logo { background: #fff; box-shadow: var(--shadow-xs); }
.main-nav a { color: var(--text-body); opacity: 1; font-weight: 600; border-radius: var(--radius-pill); }
.main-nav a:hover { background: var(--ink-100); color: var(--ink-900); }
.main-nav a.active { background: var(--violet-100); color: var(--brand-strong); }
.header-right { color: var(--text-body); }
.site-header .user-menu .uname { color: var(--brand-strong); }
.site-header .lang-toggle { background: var(--ink-100); }
.site-header .lang-toggle a { color: var(--text-muted); }
.site-header .lang-toggle a:hover { color: var(--ink-900); }
.site-header .lang-toggle a.active { background: var(--brand); color: #fff; }

/* ---------- Buttons (pill) ---------- */
.btn {
  border-radius: var(--radius-pill); font-family: var(--font-body); font-weight: 700; padding: 10px 20px;
  background: var(--brand); color: #fff; box-shadow: 0 6px 18px rgba(144,0,240,.18);
  transition: transform var(--dur-fast) var(--ease-out), filter var(--dur-fast) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.btn:hover { filter: brightness(1.06); box-shadow: var(--shadow-brand); }
.btn:active { transform: scale(.97); }
.btn.secondary { background: #fff; color: var(--brand-strong); border-color: var(--border-brand); box-shadow: none; }
.btn.secondary:hover { background: var(--violet-50); filter: none; box-shadow: none; }
.btn.teal { background: var(--accent); box-shadow: 0 6px 18px rgba(0,0,255,.16); }
.btn.teal:hover { box-shadow: 0 10px 30px rgba(0,0,255,.22); }
.btn.ghost { background: transparent; color: var(--brand-strong); box-shadow: none; }
.btn.ghost:hover { background: var(--ink-100); filter: none; }
.btn.danger { background: var(--danger); box-shadow: none; }
.btn.sm { padding: 7px 15px; font-size: .85rem; }

/* ---------- Cards ---------- */
.card { border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow-xs); background: var(--surface-card); }
a.card { transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out); }
a.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); text-decoration: none; }
.course-card { position: relative; overflow: hidden; }
.course-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 8px; background: linear-gradient(90deg, var(--brand), var(--accent)); }
.course-card .ct { font-size: 1.35rem; margin-top: 4px; }
.course-card .cmeta { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .01em; }

/* ---------- Badges / chips ---------- */
.badge { font-family: var(--font-mono); font-weight: 500; letter-spacing: .02em; }
.badge.muted { background: var(--ink-100); color: var(--text-muted); }
.chip { background: var(--violet-50); color: var(--brand-strong); border-radius: var(--radius-pill); font-weight: 700; }

/* ---------- Alerts ---------- */
.alert { border-radius: var(--radius-md); }
.alert.success { background: var(--success-soft); color: #10704c; border-color: #bfe6d5; }
.alert.error { background: var(--danger-soft); color: #b42a2f; border-color: #f5c6c0; }
.alert.info { background: var(--blue-50); color: var(--accent-strong); border-color: var(--blue-100); }

/* ---------- Forms ---------- */
.form-row label { font-weight: 700; }
.form-row input[type=text], .form-row input[type=email], .form-row input[type=password],
.form-row input[type=number], .form-row input[type=url], .form-row input[type=datetime-local],
.form-row textarea, .form-row select { border-radius: var(--radius-md); border-color: var(--border); }
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  outline: none; border-color: var(--focus-ring); box-shadow: 0 0 0 3px var(--violet-100);
}

/* ---------- Page head / breadcrumbs ---------- */
.page-head h1 { font-size: 2rem; }
.page-head .sub { color: var(--text-muted); }
.breadcrumbs { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .01em; }

/* ---------- Lesson / prose ---------- */
.prose { font-size: var(--text-md, 1.125rem); line-height: 1.7; color: var(--text-body); }
.prose h2, .prose h3, .prose h4 { font-family: var(--font-display); color: var(--text-heading); }
.prose h4 { font-size: 1.3rem; margin-top: 1.6rem; letter-spacing: -0.01em; }
.prose blockquote {
  border-inline-start: 4px solid var(--brand); background: var(--violet-50); color: var(--ink-800);
  border-radius: 0 var(--radius-md) var(--radius-md) 0; padding: 10px 18px; font-style: italic;
}
.prose code { background: var(--violet-50); color: var(--brand-strong); }
.media-label { font-family: var(--font-mono); color: var(--text-muted); }
.video-embed { border-radius: var(--radius-lg); }
.lesson-toc a.current { color: var(--brand); font-weight: 700; }

/* Per-lesson exam call-to-action */
.exam-cta { background: linear-gradient(160deg, var(--violet-50), #fff); border: 1px solid var(--border-brand); border-radius: var(--radius-lg); padding: 18px 20px; }

/* ---------- Exam ---------- */
.exam-q { border-radius: var(--radius-lg); box-shadow: var(--shadow-xs); }
.exam-q .qtext { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; }
.opt { border-radius: var(--radius-md); transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out); }
.opt:hover { border-color: var(--border-brand); background: var(--violet-50); }
.opt.is-correct { border-color: #9fe3c6; background: var(--success-soft); }
.opt.is-wrong { border-color: #f3b6ae; background: var(--danger-soft); }
.score-hero { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); }
.score-hero.pass { background: linear-gradient(120deg, var(--success), #2bbd85); }
.score-hero.fail { background: linear-gradient(120deg, var(--danger), #f2686c); }
.score-hero .pct { font-family: var(--font-display); }
.explain { background: var(--violet-50); color: var(--ink-800); border-radius: var(--radius-md); }

/* ---------- Auth (login) ---------- */
.auth-wrap { background: linear-gradient(160deg, var(--violet-50), var(--surface) 55%, var(--blue-50)); }
.auth-card { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); border: 1px solid var(--border); }
/* Wordmark: "Life" and "Learn" in ink, the middle n in brand violet (design system). */
.auth-card .logo { font-family: var(--font-display); font-weight: 700; color: var(--text-heading); font-size: 1.7rem; }
.auth-card .logo .n { color: var(--brand); }
.auth-card .tag { color: var(--text-muted); }
.auth-card .lang-toggle { background: var(--ink-100); }
.auth-card .lang-toggle a { color: var(--text-muted); }
.auth-card .lang-toggle a.active { background: var(--brand); color: #fff; }
.auth-logo-wrap img { box-shadow: var(--shadow-brand); }
.auth-terms-link { color: var(--text-link) !important; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); }
.site-footer a { color: var(--text-link); }

/* ---------- Rich lesson sections (course content) ---------- */
.prose .lsn-dek { color: var(--text-muted); font-size: 1.05rem; font-style: italic; margin-bottom: 1.1rem; }
.prose .lsn-lead {
  font-size: 1.2rem; line-height: 1.6; color: var(--ink-800);
  border-inline-start: 3px solid var(--brand); padding-inline-start: 16px; margin: 0 0 1.6rem;
}
.prose .lsn-lead-label {
  display: inline-block; font-family: var(--font-mono); font-size: .68rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase; color: var(--brand); margin-inline-end: 8px; vertical-align: 1px;
}

/* Eyebrow subsection headings (override the serif .prose h4) */
.prose h4.lsn-eyebrow {
  font-family: var(--font-mono); font-size: .8rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--brand); margin: 2rem 0 .7rem;
  display: flex; align-items: center; gap: 8px;
}
.prose h4.lsn-eyebrow--audio, .prose h4.lsn-eyebrow--session { color: var(--accent-strong); }

/* Reading value chip */
.prose .lsn-reading {
  display: inline-block; font-family: var(--font-mono); font-size: .92rem; color: var(--brand-strong);
  background: var(--violet-50); border: 1px solid var(--violet-100); border-radius: var(--radius-pill); padding: 6px 14px;
}

/* Live classes */
.live-card { border-inline-start: 4px solid var(--border-brand, #D7A4F9); }
.live-card.is-live { border-inline-start-color: #E24B4A; background: linear-gradient(180deg, #FFF6F6, var(--white, #fff) 70%); }
.live-card.is-past { opacity: .72; }
.badge.live-badge { background: #E24B4A; color: #fff; border-color: #E24B4A; }
.badge.live-badge { animation: lnl-pulse 2s ease-in-out infinite; }
@keyframes lnl-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .62; } }
@media (prefers-reduced-motion: reduce) { .badge.live-badge { animation: none; } }

/* Zoom client-view stage (bare layout) */
body.bare { background: var(--surface, #fff); }
body.bare.in-meeting .live-stage-head, body.bare.in-meeting .live-status { display: none; }
.live-stage-head {
  display: flex; justify-content: space-between; align-items: center; gap: 14px;
  flex-wrap: wrap; padding: 12px 0; border-bottom: 1px solid var(--border, #e5e7eb);
}
.live-status { padding: 28px 0; color: var(--text-muted, #6b7280); }
/* The Zoom client view fills #zmmtg-root itself once the meeting starts. */
#zmmtg-root:empty { display: none; }

/* Further reading + copyright block at the foot of a lesson */
.prose .lsn-further {
  margin: 2.6rem 0 0; padding: 1.15rem 1.35rem;
  background: var(--violet-50); border: 1px solid var(--violet-100);
  border-radius: var(--radius-lg);
}
.prose .lsn-further h4.lsn-eyebrow { margin-top: 0; }
.prose .lsn-further-line { margin: 0; font-size: 1rem; line-height: 1.7; }
.prose .lsn-further-line cite { font-style: italic; }
.prose a.lsn-book { color: var(--brand-strong); text-decoration-thickness: 1px; text-underline-offset: 2px; }
.prose .lsn-attrib {
  margin: .9rem 0 0; padding-top: .85rem; border-top: 1px solid var(--violet-200);
  font-size: .85rem; line-height: 1.65; color: var(--text-muted);
}
.prose .lsn-attrib strong { color: var(--text-body); }

/* Lesson body + drop-cap (English only — Devanagari has no capitals) */
html[lang="en"] .prose .lsn-body > p:first-of-type::first-letter {
  font-family: var(--font-display); font-weight: 600; color: var(--brand);
  font-size: 3.1rem; line-height: .82; float: inline-start; padding-inline-end: 10px; padding-top: 4px;
}

/* Practice checklist */
.prose ul.lsn-practice { list-style: none; padding: 0; margin: .4rem 0 1.6rem; display: grid; gap: 10px; }
.prose ul.lsn-practice li { position: relative; padding-inline-start: 36px; min-height: 24px; }
.prose ul.lsn-practice li::before {
  content: "\2713"; position: absolute; inset-inline-start: 0; top: 0; width: 24px; height: 24px;
  border-radius: var(--radius-pill); background: var(--brand-soft); color: var(--brand-strong);
  font-size: .78rem; font-weight: 700; display: flex; align-items: center; justify-content: center;
}

/* Guided-audio callout */
.prose .lsn-audio {
  display: flex; gap: 12px; align-items: flex-start; background: var(--blue-50);
  border-inline-start: 3px solid var(--accent); border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 12px 16px; margin: 1.4rem 0; color: var(--ink-800);
}
.prose .lsn-audio-icon { font-size: 1.15rem; line-height: 1.5; flex: none; }
.prose .lsn-audio strong { color: var(--accent-strong); }

/* Reflection highlight */
.prose .lsn-reflect {
  font-family: var(--font-display); font-style: italic; font-size: 1.3rem; line-height: 1.5; color: var(--ink-900);
  border-inline-start: 3px solid var(--brand); padding-inline-start: 16px; margin: .2rem 0 1.6rem;
}
.prose .lsn-reflect::before {
  content: "\201C"; color: var(--violet-300); font-family: var(--font-display);
  font-size: 2rem; line-height: 0; vertical-align: -.4em; margin-inline-end: 4px;
}

/* Weekend session paragraph (kept calm) */
.prose .lsn-session { color: var(--ink-800); }

/* Closing pull-quote — overrides the default .prose blockquote box */
.prose blockquote.lsn-pullquote {
  border: 0; border-top: 1px solid var(--border); background: none; border-radius: 0; text-align: center;
  font-family: var(--font-display); font-style: italic; font-size: 1.55rem; line-height: 1.4;
  color: var(--brand-strong); max-width: 36ch; margin: 2.4rem auto 0; padding: 1.6rem 0 0;
}
.prose blockquote.lsn-pullquote::before {
  content: "\201C"; display: block; font-size: 3rem; line-height: .1; color: var(--violet-300); margin-bottom: .5rem;
}

/* ---------- Lesson hero image ---------- */
.lesson-hero {
  margin: 0 0 1.6rem; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm);
  aspect-ratio: 16 / 9; background: linear-gradient(135deg, var(--violet-100), var(--blue-100));
}
.lesson-hero img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* Public week-1 taster */
.preview-ribbon {
  margin: 0 0 1.6rem; padding: 11px 18px; border-radius: var(--radius-md);
  background: var(--violet-50); border: 1px solid var(--border-brand);
  color: var(--brand-strong); font-size: .9rem; text-align: center;
}
.preview-cta {
  margin: 2.8rem 0 0; padding: 34px 26px; text-align: center;
  border-radius: var(--radius-lg); color: #fff;
  background: linear-gradient(135deg, var(--violet-900) 0%, var(--violet-600) 48%, var(--blue-600) 100%);
}
.preview-cta h2 { color: #fff; margin: 0 0 10px; font-size: 1.55rem; }
.preview-cta p { color: #e4dbff; margin: 0 auto 20px; max-width: 480px; line-height: 1.7; }
.preview-cta .btn { background: #fff; color: var(--brand-strong); }
.preview-cta .btn:hover { background: #fff; filter: brightness(.97); }
.preview-cta-note { font-size: .86rem; color: #cfc0ff; margin: 14px 0 0; }
.preview-cta-note a { color: #fff; text-decoration: underline; text-underline-offset: 2px; }

/* Auth: front-door pitch above the form */
.auth-pitch { text-align: center; margin: 0 0 18px; }
.auth-kicker {
  margin: 0 0 8px; font-size: .74rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--brand-strong, #7300C2);
}
.auth-h1 { margin: 0 0 8px; font-size: 1.45rem; line-height: 1.25; }
.auth-sub { margin: 0; font-size: .93rem; color: var(--text-muted, #6b7280); }
.auth-points {
  list-style: none; margin: 18px 0 0; padding: 16px 0 0;
  border-top: 1px solid var(--border, #e5e7eb);
  display: grid; gap: 8px; font-size: .88rem; color: var(--text-muted, #6b7280);
}
.auth-points li { display: flex; gap: 9px; align-items: baseline; }

/* Auth: divider + Google sign-in button */
.auth-or {
  display: flex; align-items: center; gap: 12px;
  margin: 16px 0; color: var(--text-muted, #6b7280); font-size: .85rem;
}
.auth-or::before, .auth-or::after {
  content: ""; flex: 1 1 auto; height: 1px; background: var(--border, #e5e7eb);
}
.btn-google { display: inline-flex; align-items: center; justify-content: center; gap: 10px; }
.btn-google svg { flex: none; }

/* Lesson: AI "Listen" player at the top */
.lesson-listen {
  display: flex; align-items: center; gap: 14px;
  margin: 0 0 1.5rem; padding: 12px 16px;
  border: 1px solid var(--border-brand, #D7A4F9);
  background: linear-gradient(135deg, var(--violet-50, #FBF4FF), var(--blue-50, #F1F1FF));
  border-radius: var(--radius-lg, 14px);
}
.ll-btn {
  flex: none; width: 48px; height: 48px; border: 0; border-radius: 50%; cursor: pointer;
  background: var(--brand, #9000F0); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(144, 0, 240, .35);
}
.ll-btn:hover { filter: brightness(1.07); }
.ll-btn svg { width: 22px; height: 22px; fill: currentColor; }
.ll-ico-pause { display: none; }
.lesson-listen.playing .ll-ico-play { display: none; }
.lesson-listen.playing .ll-ico-pause { display: inline; }
.ll-main { flex: 1 1 auto; min-width: 0; }
.ll-head { display: flex; align-items: center; gap: 8px; margin-bottom: 7px; flex-wrap: wrap; }
.ll-title { font-weight: 600; }
.badge-ai {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: .68rem; font-weight: 700; letter-spacing: .03em; text-transform: uppercase;
  color: var(--brand-strong, #7300C2); background: #fff;
  border: 1px solid var(--border-brand, #D7A4F9); border-radius: 999px; padding: 2px 8px;
}
.ll-row { display: flex; align-items: center; gap: 10px; }
.ll-seek { flex: 1 1 auto; height: 6px; border-radius: 999px; background: var(--violet-200, #EAD1FC); cursor: pointer; overflow: hidden; }
.ll-fill { height: 100%; width: 0; background: var(--brand, #9000F0); border-radius: 999px; transition: width .1s linear; }
.ll-time { flex: none; font-variant-numeric: tabular-nums; }