/* ============================================================
   Donic IELTS Preparation — app.css
   Blend: Squarespace elegant whitespace 50% /
          artificialanalysis.ai clean cards 30% /
          SpaceX restrained tech 20%.
   Light/dark via [data-theme] + prefers-color-scheme.
   ============================================================ */

:root {
  --paper: #faf9f7;
  --paper-2: #ffffff;
  --ink: #17171b;
  --ink-2: #606068;
  --ink-3: #9a9aa2;
  --hairline: rgba(23, 23, 27, 0.10);
  --hairline-soft: rgba(23, 23, 27, 0.06);
  --accent: #b31b34;
  --accent-deep: #8c1428;
  --accent-wash: rgba(179, 27, 52, 0.08);
  --good: #1e7e4d;
  --warn: #b7791f;
  --card-shadow: 0 1px 2px rgba(23, 23, 27, 0.04), 0 12px 32px -18px rgba(23, 23, 27, 0.18);
  --glass: rgba(255, 255, 255, 0.62);
  --glass-border: rgba(255, 255, 255, 0.55);
  --nav-bg: rgba(250, 249, 247, 0.78);
  --focus: rgba(179, 27, 52, 0.35);
  --font-head: "victorSerifBasic Medium", "victorSerifBasic Fallback", Georgia, Cambria, "Noto Serif SC", "Songti SC", serif;
  --font-sub: "suisseIntl", "suisseIntl Fallback", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Spectral", "Spectral Fallback", Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", serif;
  --radius: 14px;
  --radius-sm: 9px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f0f13;
    --paper-2: #16161b;
    --ink: #f1f0ec;
    --ink-2: #a9a9b2;
    --ink-3: #6d6d76;
    --hairline: rgba(255, 255, 255, 0.12);
    --hairline-soft: rgba(255, 255, 255, 0.07);
    --accent: #e0536a;
    --accent-deep: #f0758a;
    --accent-wash: rgba(224, 83, 106, 0.12);
    --good: #4cc38a;
    --warn: #e0a83e;
    --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 16px 40px -20px rgba(0, 0, 0, 0.6);
    --glass: rgba(22, 22, 27, 0.60);
    --glass-border: rgba(255, 255, 255, 0.10);
    --nav-bg: rgba(15, 15, 19, 0.72);
    --focus: rgba(224, 83, 106, 0.45);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --paper: #0f0f13;
  --paper-2: #16161b;
  --ink: #f1f0ec;
  --ink-2: #a9a9b2;
  --ink-3: #6d6d76;
  --hairline: rgba(255, 255, 255, 0.12);
  --hairline-soft: rgba(255, 255, 255, 0.07);
  --accent: #e0536a;
  --accent-deep: #f0758a;
  --accent-wash: rgba(224, 83, 106, 0.12);
  --good: #4cc38a;
  --warn: #e0a83e;
  --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 16px 40px -20px rgba(0, 0, 0, 0.6);
  --glass: rgba(22, 22, 27, 0.60);
  --glass-border: rgba(255, 255, 255, 0.10);
  --nav-bg: rgba(15, 15, 19, 0.72);
  --focus: rgba(224, 83, 106, 0.45);
  color-scheme: dark;
}

/* ---------- base ---------- */

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, .h-serif {
  font-family: var(--font-head);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.25;
  margin: 0;
}
h1 { font-size: clamp(2rem, 4.6vw, 3.1rem); }
h2 { font-size: clamp(1.35rem, 2.6vw, 1.8rem); }
h3 { font-size: 1.15rem; }
.sub, .eyebrow, nav, button, input, select, textarea, label, .sans {
  font-family: var(--font-sub);
}
p { margin: 0 0 1em; }
p, li, dd, blockquote, .wrap-anywhere { overflow-wrap: anywhere; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
::selection { background: var(--accent-wash); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
.num { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* ---------- boot splash ---------- */

.boot {
  min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1.25rem;
}
.boot-mark {
  width: 46px; height: 46px; border-radius: 50%;
  border: 2px solid var(--hairline);
  border-top-color: var(--accent);
  animation: spin 1s linear infinite;
}
.boot-text { color: var(--ink-2); font-size: 0.95rem; letter-spacing: 0.04em; }
@keyframes spin { to { transform: rotate(360deg); } }

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

.topnav {
  position: sticky; top: 0; z-index: 40;
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(18px) saturate(1.25);
  backdrop-filter: blur(18px) saturate(1.25);
  border-bottom: 1px solid var(--hairline-soft);
}
.topnav-inner {
  max-width: 1180px; margin: 0 auto; padding: 0.85rem clamp(1rem, 4vw, 2rem);
  display: flex; align-items: center; gap: 1rem;
}
.brand { display: flex; align-items: baseline; gap: 0.6rem; margin-right: auto; cursor: pointer; }
.brand-name { font-family: var(--font-head); font-size: 1.25rem; letter-spacing: 0.02em; }
.brand-sub { font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-3); }
.nav-links { display: flex; align-items: center; gap: 0.25rem; }
.nav-link {
  color: var(--ink-2); font-size: 0.88rem; letter-spacing: 0.03em;
  padding: 0.5rem 0.8rem; border-radius: 999px; border: 0; background: none; cursor: pointer;
}
.nav-link:hover { color: var(--ink); background: var(--hairline-soft); text-decoration: none; }
.nav-link.active { color: var(--ink); background: var(--hairline-soft); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.4rem; height: 2.4rem; border-radius: 50%;
  border: 1px solid var(--hairline); background: var(--paper-2); color: var(--ink-2);
  cursor: pointer; transition: transform 0.15s ease, color 0.15s ease;
}
.icon-btn:hover { color: var(--ink); transform: translateY(-1px); }
.icon-btn svg { width: 1.1rem; height: 1.1rem; }
.user-chip {
  font-size: 0.82rem; color: var(--ink-2);
  border: 1px solid var(--hairline); border-radius: 999px; padding: 0.35rem 0.85rem;
  white-space: nowrap; max-width: 11rem; overflow: hidden; text-overflow: ellipsis;
}

#view { max-width: 1180px; margin: 0 auto; padding: clamp(1.5rem, 4vw, 3.5rem) clamp(1rem, 4vw, 2rem) 6rem; }
.view-enter { will-change: transform, opacity; }
.section { margin: 0 0 clamp(2.2rem, 5vw, 4rem); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; }
.section-head .kicker { font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 0.4rem; }
.section-head p.lead { color: var(--ink-2); max-width: 46rem; margin: 0.5rem 0 0; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.55rem;
  font-size: 0.95rem; letter-spacing: 0.02em;
  padding: 0.85rem 1.7rem; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
  will-change: transform;
}
.btn:active { transform: scale(0.97); }
.btn svg { width: 1.05rem; height: 1.05rem; flex: none; }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { box-shadow: var(--card-shadow); transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-deep); transform: translateY(-1px); }
.btn-ghost { background: transparent; border-color: var(--hairline); color: var(--ink); }
.btn-ghost:hover { background: var(--hairline-soft); }
.btn-danger-ghost { background: transparent; border-color: var(--hairline); color: var(--ink-2); }
.btn-danger-ghost:hover { color: var(--accent); border-color: var(--accent); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; transform: none !important; box-shadow: none; }
.btn-lg { padding: 1.05rem 2.4rem; font-size: 1.05rem; }
.btn-sm { padding: 0.55rem 1.1rem; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ---------- cards & grids ---------- */

.card {
  background: var(--paper-2);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  padding: clamp(1.25rem, 3vw, 2rem);
}
.card-flat { box-shadow: none; }
.grid { display: grid; gap: 1rem; }
.grid-modes { grid-template-columns: repeat(3, 1fr); }
.grid-topics { grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.mode-card, .topic-card, .attempt-card {
  text-align: left; cursor: pointer; position: relative;
  background: var(--paper-2); border: 1px solid var(--hairline-soft); border-radius: var(--radius);
  box-shadow: var(--card-shadow); padding: 1.5rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  will-change: transform;
  font-family: var(--font-sub); color: var(--ink);
  width: 100%;
}
.mode-card:hover, .topic-card:hover, .attempt-card:hover {
  transform: translateY(-3px); border-color: var(--hairline);
}
.mode-card h3, .topic-card h3 { margin-bottom: 0.35rem; }
.mode-card .meta, .topic-card .meta, .attempt-card .meta { color: var(--ink-2); font-size: 0.88rem; }
.mode-card .dur { display: inline-block; margin-top: 0.9rem; font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.mode-card .go { position: absolute; top: 1.4rem; right: 1.4rem; color: var(--ink-3); }
.topic-card .title-cn { font-family: var(--font-body); color: var(--ink-2); font-size: 0.95rem; margin-top: 0.15rem; }
.badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase;
  border: 1px solid var(--hairline); border-radius: 999px; padding: 0.22rem 0.7rem;
  color: var(--ink-2); margin-top: 0.8rem;
}
.badge .dot { width: 0.45rem; height: 0.45rem; border-radius: 50%; background: var(--ink-3); }
.badge.practiced .dot { background: var(--good); }
.badge.practiced { color: var(--good); border-color: color-mix(in srgb, var(--good) 40%, transparent); }
.band-chip {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 2.6rem; padding: 0.25rem 0.6rem; border-radius: 999px;
  background: var(--ink); color: var(--paper);
  font-family: var(--font-sub); font-size: 0.85rem; font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.band-chip.accent { background: var(--accent); color: #fff; }
.attempt-card { display: flex; flex-direction: column; gap: 0.5rem; }
.attempt-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.attempt-topics { color: var(--ink-2); font-size: 0.9rem; }
.attempt-date { color: var(--ink-3); font-size: 0.8rem; letter-spacing: 0.04em; }
.empty-note { color: var(--ink-3); border: 1px dashed var(--hairline); border-radius: var(--radius); padding: 2rem; text-align: center; }

/* ---------- login ---------- */

.login-wrap { min-height: 78svh; display: flex; align-items: center; justify-content: center; }
.login-card { max-width: 26rem; width: 100%; text-align: center; padding: clamp(2rem, 6vw, 3.5rem); }
.login-card .mark {
  width: 3.4rem; height: 3.4rem; border-radius: 50%; margin: 0 auto 1.5rem;
  border: 1px solid var(--hairline); display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-size: 1.4rem; color: var(--accent);
}
.login-card h1 { margin-bottom: 0.6rem; }
.login-card p { color: var(--ink-2); }

/* ---------- forms ---------- */

.field { margin-bottom: 1.15rem; }
.field label { display: block; font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 0.45rem; }
.field input[type="text"], .field input[type="password"], .field input[type="url"],
.field select, .field textarea {
  width: 100%; padding: 0.8rem 1rem; border-radius: var(--radius-sm);
  border: 1px solid var(--hairline); background: var(--paper); color: var(--ink);
  font-family: var(--font-sub); font-size: 0.95rem;
}
.field textarea { font-family: var(--font-body); resize: vertical; min-height: 7rem; line-height: 1.7; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--focus); border-color: var(--accent); }
.field .hint { font-size: 0.82rem; color: var(--ink-3); margin-top: 0.35rem; }
.check-row { display: flex; align-items: flex-start; gap: 0.8rem; padding: 0.9rem 0; border-top: 1px solid var(--hairline-soft); }
.check-row input { width: 1.15rem; height: 1.15rem; margin-top: 0.2rem; accent-color: var(--accent); }
.check-row .t { font-size: 0.95rem; }
.check-row .d { font-size: 0.83rem; color: var(--ink-3); }

/* ---------- exam chrome ---------- */

.exam-shell { display: grid; grid-template-columns: minmax(0, 1fr) 21rem; gap: 1.5rem; align-items: start; }
.exam-main { min-width: 0; }
.exam-head {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  padding-bottom: 1.1rem; margin-bottom: 1.5rem; border-bottom: 1px solid var(--hairline-soft);
}
.exam-head .who { margin-right: auto; }
.exam-head .who .t { font-family: var(--font-head); font-size: 1.3rem; }
.exam-head .who .s { font-size: 0.82rem; color: var(--ink-2); letter-spacing: 0.05em; }
.exam-clock { font-family: var(--font-body); font-variant-numeric: tabular-nums; font-size: 1.05rem; color: var(--ink-2); }
.stage { min-height: 22rem; display: flex; flex-direction: column; }
.stage-block { margin: auto 0; width: 100%; }

.examiner-speaking { text-align: center; padding: 2rem 1rem; }
.wave { display: inline-flex; align-items: flex-end; gap: 5px; height: 44px; margin-bottom: 1.2rem; }
.wave span { width: 4px; border-radius: 3px; background: var(--accent); animation: wave 1.1s ease-in-out infinite; }
.wave span:nth-child(1) { height: 40%; animation-delay: 0s; }
.wave span:nth-child(2) { height: 75%; animation-delay: 0.15s; }
.wave span:nth-child(3) { height: 55%; animation-delay: 0.3s; }
.wave span:nth-child(4) { height: 90%; animation-delay: 0.45s; }
.wave span:nth-child(5) { height: 60%; animation-delay: 0.6s; }
.wave span:nth-child(6) { height: 80%; animation-delay: 0.75s; }
.wave span:nth-child(7) { height: 45%; animation-delay: 0.9s; }
@keyframes wave { 0%, 100% { transform: scaleY(0.5); } 50% { transform: scaleY(1); } }
.speaking-label { font-size: 0.78rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 1rem; }
.examiner-caption { max-width: 38rem; margin: 0 auto; color: var(--ink-2); font-style: italic; font-size: 1.02rem; }
.readaloud-note {
  display: inline-block; margin-top: 1rem; font-size: 0.82rem; letter-spacing: 0.06em;
  color: var(--warn); border: 1px solid color-mix(in srgb, var(--warn) 45%, transparent);
  border-radius: 999px; padding: 0.35rem 1rem; font-family: var(--font-sub);
}

/* transcript stream */
.stream-panel {
  position: sticky; top: 5.5rem; max-height: calc(100svh - 8rem);
  display: flex; flex-direction: column;
  background: var(--paper-2); border: 1px solid var(--hairline-soft); border-radius: var(--radius);
  box-shadow: var(--card-shadow); overflow: hidden;
}
.stream-head {
  padding: 0.9rem 1.2rem; border-bottom: 1px solid var(--hairline-soft);
  font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-3);
  font-family: var(--font-sub); display: flex; justify-content: space-between; align-items: center;
}
.stream-body { overflow-y: auto; padding: 1rem 1.2rem 1.5rem; display: flex; flex-direction: column; gap: 1rem; }
.stream-empty { color: var(--ink-3); font-size: 0.9rem; font-style: italic; }
.turn .who { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-3); font-family: var(--font-sub); margin-bottom: 0.25rem; }
.turn.examiner .text { color: var(--ink-2); font-style: italic; font-size: 0.95rem; border-left: 2px solid var(--hairline); padding-left: 0.8rem; }
.turn.candidate .text { font-size: 0.98rem; }
.turn .part-tag { font-size: 0.7rem; color: var(--ink-3); letter-spacing: 0.1em; margin-left: 0.5rem; }
.stream-toggle { display: none; }

/* ---------- recording ---------- */

.rec-panel { text-align: center; padding: 1.5rem 1rem; }
.rec-timer {
  font-family: var(--font-body); font-size: clamp(2.6rem, 7vw, 4rem); font-weight: 300;
  font-variant-numeric: tabular-nums; line-height: 1; margin: 0.6rem 0 0.2rem;
}
.rec-timer.amber { color: var(--warn); }
.rec-state { font-size: 0.8rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-3); font-family: var(--font-sub); }
.rec-state.live { color: var(--accent); }
.rec-meter { margin: 1.2rem auto; display: block; }
.rec-hint { color: var(--ink-2); font-size: 0.9rem; margin: 1rem 0; min-height: 1.6em; }
.rec-actions { display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap; margin-top: 1.2rem; }
.btn-record {
  width: 4.6rem; height: 4.6rem; border-radius: 50%; padding: 0;
  background: var(--accent); color: #fff; border: 0; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 28px -10px color-mix(in srgb, var(--accent) 70%, transparent);
  transition: transform 0.16s ease;
}
.btn-record:hover { transform: scale(1.05); }
.btn-record svg { width: 1.7rem; height: 1.7rem; }
.btn-stop {
  width: 4.6rem; height: 4.6rem; border-radius: 50%; padding: 0;
  background: var(--ink); color: var(--paper); border: 0; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform 0.16s ease, opacity 0.16s ease;
}
.btn-stop svg { width: 1.5rem; height: 1.5rem; }
.btn-stop[disabled] { opacity: 0.35; cursor: not-allowed; }
.q-recap { max-width: 40rem; margin: 0 auto 1rem; color: var(--ink-2); font-style: italic; }
.q-recap .q-label { display: block; font-style: normal; font-family: var(--font-sub); font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 0.4rem; }

/* transcript edit */
.edit-panel { max-width: 44rem; margin: 0 auto; width: 100%; }
.edit-label { font-family: var(--font-sub); font-size: 0.85rem; color: var(--ink-2); margin-bottom: 0.6rem; display: flex; justify-content: space-between; align-items: baseline; }
.edit-label .wc { color: var(--ink-3); font-variant-numeric: tabular-nums; }
.edit-panel textarea { min-height: 9rem; }

/* ---------- overlays: break, cue card ---------- */

.overlay {
  position: fixed; inset: 0; z-index: 80;
  display: flex; align-items: center; justify-content: center; padding: 1.25rem;
  background: var(--glass);
  -webkit-backdrop-filter: blur(22px) saturate(1.3);
  backdrop-filter: blur(22px) saturate(1.3);
}
.overlay-card {
  position: relative; width: min(34rem, 100%); text-align: center;
  background: var(--paper-2); border: 1px solid var(--glass-border); border-radius: 20px;
  box-shadow: var(--card-shadow); padding: clamp(2rem, 6vw, 3.2rem);
  overflow: hidden; will-change: transform, opacity;
}
.overlay-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.65), transparent);
  pointer-events: none;
}
.ring-wrap { position: relative; width: 11rem; height: 11rem; margin: 0 auto 1.4rem; }
.ring-wrap svg { transform: rotate(-90deg); width: 100%; height: 100%; }
.ring-bg { fill: none; stroke: var(--hairline-soft); stroke-width: 7; }
.ring-fg { fill: none; stroke: var(--accent); stroke-width: 7; stroke-linecap: round; transition: stroke-dashoffset 0.25s linear; }
.ring-num {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 2.1rem; font-variant-numeric: tabular-nums; font-weight: 300;
}
.overlay-card .kicker { font-size: 0.75rem; letter-spacing: 0.26em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 0.8rem; font-family: var(--font-sub); }
.overlay-card h2 { margin-bottom: 0.6rem; }
.overlay-card p.desc { color: var(--ink-2); max-width: 26rem; margin: 0 auto 1.6rem; }
.overlay-actions { display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap; }

.cue-card { text-align: left; width: min(38rem, 100%); }
.cue-topic { font-family: var(--font-head); font-size: clamp(1.5rem, 4vw, 2rem); margin: 0.4rem 0 1rem; }
.cue-bullets { margin: 0 0 1.6rem; padding-left: 1.2rem; color: var(--ink-2); }
.cue-bullets li { margin-bottom: 0.55rem; }
.cue-prep { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.6rem; padding: 1rem 1.2rem; border: 1px solid var(--hairline-soft); border-radius: var(--radius-sm); background: var(--paper); }
.cue-prep .t { font-size: 2rem; font-variant-numeric: tabular-nums; font-weight: 300; min-width: 4.2rem; }
.cue-prep .d { font-size: 0.88rem; color: var(--ink-2); }

/* ---------- setup screen ---------- */

.setup-grid { display: grid; gap: 1.25rem; }
.picker-group { border: 1px solid var(--hairline-soft); border-radius: var(--radius); padding: 1.25rem 1.4rem; background: var(--paper-2); }
.picker-group legend, .picker-group .legend { font-family: var(--font-sub); font-size: 0.8rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 0.9rem; }
.picker-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr)); gap: 0.6rem; }
.pick {
  text-align: left; border: 1px solid var(--hairline); border-radius: var(--radius-sm);
  background: var(--paper); color: var(--ink); padding: 0.75rem 0.95rem; cursor: pointer;
  font-family: var(--font-sub); font-size: 0.9rem;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}
.pick:hover { transform: translateY(-1px); }
.pick .cn { display: block; color: var(--ink-2); font-size: 0.82rem; font-family: var(--font-body); margin-top: 0.15rem; }
.pick[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-wash); }
.gender-row { display: flex; gap: 0.6rem; }
.setup-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 0.5rem; }

/* ---------- report ---------- */

.report-hero { text-align: center; padding: clamp(2.5rem, 7vw, 4.5rem) 1rem; margin-bottom: 2.5rem; }
.report-hero .kicker { font-size: 0.75rem; letter-spacing: 0.28em; text-transform: uppercase; color: var(--ink-3); font-family: var(--font-sub); margin-bottom: 1rem; }
.band-hero { font-family: var(--font-head); font-size: clamp(4.5rem, 14vw, 7.5rem); line-height: 1; font-weight: 500; font-variant-numeric: tabular-nums; }
.band-hero small { font-size: 0.32em; color: var(--ink-3); font-weight: 400; }
.report-hero .meta { color: var(--ink-2); margin-top: 1rem; font-size: 0.95rem; }
.part-card { margin-bottom: 1.25rem; }
.part-card .part-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.2rem; }
.criterion { padding: 0.9rem 0; border-top: 1px solid var(--hairline-soft); }
.criterion .row1 { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 0.45rem; }
.criterion .name { font-family: var(--font-sub); font-size: 0.92rem; font-weight: 600; letter-spacing: 0.02em; }
.criterion .bar { height: 4px; border-radius: 3px; background: var(--hairline-soft); overflow: hidden; margin-bottom: 0.45rem; }
.criterion .bar i { display: block; height: 100%; background: var(--accent); border-radius: 3px; }
.criterion .just { color: var(--ink-2); font-size: 0.94rem; margin: 0; }
.insight-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.insight-list li { display: flex; gap: 0.75rem; align-items: flex-start; }
.insight-list svg { flex: none; width: 1.05rem; height: 1.05rem; margin-top: 0.28rem; }
.insight-list.strengths svg { color: var(--good); }
.insight-list.weaknesses svg { color: var(--warn); }
.insight-list.suggestions svg { color: var(--accent); }

details.answer { border: 1px solid var(--hairline-soft); border-radius: var(--radius-sm); margin-bottom: 0.6rem; background: var(--paper-2); overflow: hidden; }
details.answer summary {
  cursor: pointer; padding: 0.95rem 1.15rem; font-family: var(--font-sub); font-size: 0.93rem;
  display: flex; gap: 0.8rem; align-items: baseline; list-style: none;
}
details.answer summary::-webkit-details-marker { display: none; }
details.answer summary .q { flex: 1; }
details.answer summary .dur { color: var(--ink-3); font-variant-numeric: tabular-nums; font-size: 0.85rem; white-space: nowrap; }
details.answer .body { padding: 0 1.15rem 1.15rem; color: var(--ink-2); border-top: 1px dashed var(--hairline-soft); padding-top: 0.9rem; margin: 0 1.15rem 1.15rem; padding-left: 0; padding-right: 0; }
details.answer .final-tag { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); font-family: var(--font-sub); display: block; margin-bottom: 0.35rem; }

.player-card audio { width: 100%; margin: 0.6rem 0 1rem; }
.seg-list { list-style: none; margin: 0 0 1rem; padding: 0; display: grid; gap: 0.4rem; }
.seg-list li { display: flex; align-items: center; gap: 0.7rem; font-size: 0.88rem; color: var(--ink-2); padding: 0.5rem 0.8rem; border: 1px solid var(--hairline-soft); border-radius: var(--radius-sm); font-family: var(--font-sub); }
.seg-list li.playing { border-color: var(--accent); color: var(--ink); }
.seg-list li .n { color: var(--ink-3); font-variant-numeric: tabular-nums; width: 1.6rem; }
.seg-list li .miss { margin-left: auto; font-size: 0.75rem; color: var(--ink-3); }

/* merge progress pill */
.merge-pill {
  position: fixed; bottom: 1.4rem; left: 50%; transform: translateX(-50%); z-index: 70;
  display: flex; align-items: center; gap: 0.7rem;
  background: var(--paper-2); border: 1px solid var(--hairline); border-radius: 999px;
  padding: 0.65rem 1.25rem; box-shadow: var(--card-shadow);
  font-family: var(--font-sub); font-size: 0.85rem; color: var(--ink-2);
}
.merge-pill .spin { width: 1rem; height: 1rem; border-radius: 50%; border: 2px solid var(--hairline); border-top-color: var(--accent); animation: spin 1s linear infinite; }

/* ---------- guide ---------- */

.guide-table-wrap { overflow-x: auto; border: 1px solid var(--hairline-soft); border-radius: var(--radius); background: var(--paper-2); box-shadow: var(--card-shadow); }
table.bands { border-collapse: collapse; width: 100%; min-width: 56rem; font-size: 0.88rem; }
table.bands th, table.bands td { border: 1px solid var(--hairline-soft); padding: 0.85rem 1rem; vertical-align: top; text-align: left; }
table.bands thead th { font-family: var(--font-sub); font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; background: var(--paper); position: sticky; top: 0; }
table.bands tbody th { font-family: var(--font-head); font-size: 1.5rem; font-weight: 500; text-align: center; width: 4.5rem; font-variant-numeric: tabular-nums; }
table.bands ul { margin: 0; padding-left: 1.05rem; }
table.bands li { margin-bottom: 0.35rem; }
table.bands li:last-child { margin-bottom: 0; }
.guide-note { border-left: 3px solid var(--accent); padding: 0.4rem 0 0.4rem 1.1rem; margin: 1.6rem 0; color: var(--ink-2); }
.guide-note strong { color: var(--ink); font-family: var(--font-sub); font-size: 0.9rem; letter-spacing: 0.04em; display: block; margin-bottom: 0.25rem; }
.mini-bands { display: grid; gap: 0.5rem; margin-top: 1rem; }
.mini-bands .mb { display: flex; gap: 0.9rem; align-items: baseline; font-size: 0.9rem; color: var(--ink-2); }

/* ---------- toasts & modal ---------- */

.toasts { position: fixed; bottom: 1.4rem; right: 1.4rem; z-index: 100; display: flex; flex-direction: column; gap: 0.6rem; max-width: min(24rem, calc(100vw - 2.8rem)); }
.toast {
  background: var(--ink); color: var(--paper); border-radius: var(--radius-sm);
  padding: 0.85rem 1.2rem; font-family: var(--font-sub); font-size: 0.88rem;
  box-shadow: var(--card-shadow); will-change: transform, opacity;
}
.toast.error { background: var(--accent-deep); color: #fff; }
.modal-back { position: fixed; inset: 0; z-index: 90; background: rgba(0,0,0,0.35); display: flex; align-items: center; justify-content: center; padding: 1.25rem; }
.modal { background: var(--paper-2); border-radius: var(--radius); padding: 2rem; width: min(26rem, 100%); box-shadow: var(--card-shadow); will-change: transform, opacity; }
.modal h3 { margin-bottom: 0.6rem; }
.modal p { color: var(--ink-2); font-size: 0.95rem; }
.modal .row { display: flex; gap: 0.7rem; justify-content: flex-end; margin-top: 1.6rem; }

/* ---------- scoring / finishing ---------- */

.finish-wrap { text-align: center; padding: 4rem 1rem; }
.finish-wrap .boot-mark { margin: 0 auto 1.5rem; width: 54px; height: 54px; }
.finish-wrap h2 { margin-bottom: 0.6rem; }
.finish-wrap p { color: var(--ink-2); }

/* ---------- responsive ---------- */

@media (max-width: 1023px) {
  .exam-shell { grid-template-columns: minmax(0, 1fr); }
  .stream-panel {
    position: fixed; inset: auto 0 0 0; top: auto; z-index: 75;
    max-height: 62svh; border-radius: 20px 20px 0 0;
    transform: translateY(102%); transition: transform 0.32s cubic-bezier(0.32, 0.72, 0.24, 1);
    -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  }
  .stream-panel.open { transform: translateY(0); }
  .stream-toggle {
    display: inline-flex; position: fixed; right: 1.1rem; bottom: 1.1rem; z-index: 74;
  }
}

@media (max-width: 860px) {
  .grid-modes { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .nav-links .nav-link span.lbl { display: none; }
  .user-chip { display: none; }
  .topnav-inner { gap: 0.6rem; }
}

@media (max-width: 520px) {
  body { font-size: 15.5px; }
  .mode-card, .topic-card, .attempt-card { padding: 1.15rem; }
  .brand-sub { display: none; }
  .toasts { right: 0.9rem; bottom: 4.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
}
/* ============================================================
   v2 UI — Donic ID login · freshness · prefetch · shimmer
   ============================================================ */

/* ----- theme-aware logos (Donic ID generator aesthetic) ----- */
.donic-logo-img { display: none; max-width: 100%; }
:root[data-theme="light"] .donic-logo-img--on-light { display: block; }
:root[data-theme="dark"] .donic-logo-img--on-dark { display: block; }
@media (prefers-color-scheme: light) {
  :root[data-theme="system"] .donic-logo-img--on-light { display: block; }
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] .donic-logo-img--on-dark { display: block; }
}
.login-wordmark, .report-wordmark {
  font-family: var(--font-head); font-weight: 500; font-size: 1.6rem; letter-spacing: 0.02em;
}
.login-wordmark[hidden], .report-wordmark[hidden] { display: none; }

/* ----- login: Donic ID code-generator style ----- */
.login-wrap {
  min-height: 82svh; display: flex; align-items: center; justify-content: center;
  padding: 2rem 1rem;
  background:
    radial-gradient(38rem 22rem at 50% -6rem, var(--accent-wash), transparent 70%);
}
.login-card {
  width: 100%; max-width: 24rem; text-align: center;
  padding: clamp(2.4rem, 7vw, 3.4rem) clamp(1.6rem, 6vw, 2.6rem);
}
.login-hero-logos { margin: 0 auto 1.6rem; display: flex; justify-content: center; }
.login-hero-logos .donic-logo-img { height: 2.1rem; width: auto; }
.login-appicon {
  width: 4.6rem; height: 4.6rem; border-radius: 1.2rem; margin: 0 auto 1.4rem;
  border: 1px solid var(--hairline-soft); background: var(--paper);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
  box-shadow: var(--card-shadow);
}
.login-appicon img { width: 100%; height: 100%; object-fit: cover; }
.login-card h1 { font-size: clamp(1.7rem, 5vw, 2.1rem); margin-bottom: 0.5rem; }
.login-lead { color: var(--ink-2); font-size: 0.98rem; margin: 0 0 1.8rem; }
/* embeddable-button look: dark #14161a base, shield-check icon */
.donic-signin {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.65rem;
  width: 100%; border-radius: 10px; padding: 0.95rem 1.4rem; cursor: pointer;
  font-family: var(--font-sub); font-size: 0.98rem; font-weight: 600; letter-spacing: 0.01em;
  background: #14161a; color: #f2f3f5; border: 1px solid #2b2e35; text-decoration: none;
  transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.18s ease, box-shadow 0.18s ease;
  will-change: transform;
}
.donic-signin:hover { background: #1d2026; box-shadow: var(--card-shadow); transform: translateY(-1px); text-decoration: none; color: #f2f3f5; }
.donic-signin:active { transform: scale(0.98); }
.donic-signin svg { width: 1.15rem; height: 1.15rem; flex: none; }
:root[data-theme="light"] .donic-signin { background: #ffffff; color: #14161a; border-color: #dfe1e6; }
:root[data-theme="light"] .donic-signin:hover { background: #f6f7f9; color: #14161a; }
@media (prefers-color-scheme: light) {
  :root[data-theme="system"] .donic-signin { background: #ffffff; color: #14161a; border-color: #dfe1e6; }
  :root[data-theme="system"] .donic-signin:hover { background: #f6f7f9; color: #14161a; }
}

/* ----- freshness chips (dashboard) ----- */
.chip-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1rem; }
.chip {
  font-family: var(--font-sub); font-size: 0.85rem; letter-spacing: 0.04em;
  padding: 0.45rem 1.05rem; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--hairline); background: var(--paper-2); color: var(--ink-2);
  transition: all 0.16s ease;
}
.chip:hover { color: var(--ink); border-color: var(--ink-3); }
.chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.badge-new {
  color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent);
}
.badge-new .dot { background: var(--accent); }
.topic-badges { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 0.8rem; }
.topic-badges .badge { margin-top: 0; }

/* ----- freshness segmented selector (exam setup) ----- */
.seg-row { display: inline-flex; border: 1px solid var(--hairline); border-radius: 999px; padding: 3px; gap: 2px; background: var(--paper); }
.seg {
  font-family: var(--font-sub); font-size: 0.88rem; padding: 0.55rem 1.3rem; border-radius: 999px;
  border: 0; background: transparent; color: var(--ink-2); cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.seg:hover { color: var(--ink); }
.seg[aria-pressed="true"] { background: var(--ink); color: var(--paper); transform: scale(1.02); }
.fresh-note { font-size: 0.82rem; color: var(--ink-3); margin-top: 0.7rem; }

/* ----- slim TTS prefetch progress (exam head) ----- */
.tts-bar {
  height: 3px; border-radius: 2px; background: var(--hairline-soft);
  overflow: hidden; margin: -0.6rem 0 1.2rem; position: relative;
}
.tts-bar[hidden] { display: none; }
.tts-bar i {
  display: block; height: 100%; width: 0%; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.tts-bar i::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.55), transparent);
  animation: tts-shimmer 1.6s linear infinite;
}
@keyframes tts-shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

/* ----- shimmer skeletons for ALL async states ----- */
.skel {
  position: relative; overflow: hidden; background: var(--hairline-soft);
  border-radius: var(--radius-sm); min-height: 3.2rem;
}
.skel::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, transparent 30%, var(--glass-border) 50%, transparent 70%);
  animation: skel-shimmer 1.5s ease-in-out infinite;
}
@keyframes skel-shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }
.skel-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); }
.skel-card { min-height: 7.5rem; border-radius: var(--radius); }
.skel-line { min-height: 1.1rem; border-radius: 6px; }
.setup-loading { text-align: center; padding: 4rem 1rem; }
.setup-loading h2 { margin: 1.4rem 0 0.5rem; }
.setup-loading p { color: var(--ink-2); }
.setup-loading .bar-wrap {
  width: min(20rem, 80%); height: 4px; margin: 1.6rem auto 0;
  background: var(--hairline-soft); border-radius: 3px; overflow: hidden; position: relative;
}
.setup-loading .bar-wrap i {
  display: block; height: 100%; width: 35%; border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  animation: setup-slide 1.3s ease-in-out infinite;
}
@keyframes setup-slide { 0% { margin-left: -35%; } 100% { margin-left: 100%; } }

/* ----- buttery page transitions ----- */
.view-enter { animation: view-in 0.45s cubic-bezier(0.22, 1, 0.36, 1) both; }
@keyframes view-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* ----- formal report header ----- */
.report-sheet { padding: 0; overflow: hidden; }
.report-meta-bar {
  display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap;
  padding: clamp(1.5rem, 4vw, 2.4rem); border-bottom: 1px solid var(--hairline-soft);
}
.report-logos { display: flex; align-items: center; gap: 1rem; }
.report-logos .donic-logo-img { height: 2rem; width: auto; }
.report-appicon { width: 3rem; height: 3rem; border-radius: 0.8rem; object-fit: cover; border: 1px solid var(--hairline-soft); }
.report-id .kicker {
  font-size: 0.72rem; letter-spacing: 0.28em; text-transform: uppercase; color: var(--ink-3);
  font-family: var(--font-sub); margin-bottom: 0.3rem;
}
.report-id h1 { font-size: clamp(1.5rem, 3.6vw, 2rem); }
.report-facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: 1rem 1.5rem;
  margin: 0; padding: clamp(1.25rem, 3.5vw, 2rem) clamp(1.5rem, 4vw, 2.4rem);
  border-bottom: 1px solid var(--hairline-soft); background: var(--paper);
}
.report-facts > div { min-width: 0; }
.report-facts dt {
  font-family: var(--font-sub); font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 0.25rem;
}
.report-facts dd { margin: 0; font-family: var(--font-sub); font-size: 0.95rem; overflow-wrap: anywhere; }
.report-band-block { text-align: center; padding: clamp(2rem, 6vw, 3.5rem) 1rem clamp(1.5rem, 4vw, 2.5rem); }
.report-band-block .kicker {
  font-size: 0.72rem; letter-spacing: 0.28em; text-transform: uppercase; color: var(--ink-3);
  font-family: var(--font-sub); margin-bottom: 0.8rem;
}
.report-body { padding: 0 clamp(1.25rem, 4vw, 2.4rem) clamp(1.5rem, 4vw, 2.5rem); }
.report-body .section { margin-bottom: clamp(1.6rem, 4vw, 2.8rem); }

/* ----- Cloudflare/a13n top bar refinement ----- */
.topnav { border-bottom: 1px solid var(--hairline); }
.topnav-inner { padding-top: 0.7rem; padding-bottom: 0.7rem; }
.brand-name { font-weight: 500; }
.nav-link { font-weight: 500; }
.num, .rec-timer, .exam-clock, .band-chip, .ring-num, .cue-prep .t, .seg-list .n, .attempt-date {
  font-variant-numeric: tabular-nums; font-feature-settings: "tnum";
}

/* ----- responsive: login + report ----- */
@media (max-width: 640px) {
  .report-meta-bar { gap: 1rem; }
  .report-facts { grid-template-columns: repeat(2, 1fr); }
  .seg-row { display: flex; width: 100%; }
  .seg { flex: 1; padding: 0.6rem 0.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .skel::after, .tts-bar i::after, .setup-loading .bar-wrap i, .view-enter { animation: none !important; }
}