:root {
  --bg: #f6f3ec;
  --card: rgba(255,255,255,0.72);
  --ink: #241f2e;
  --ink-soft: #6b6478;
  --line: rgba(36,31,46,0.10);
  --accent: #b98a2e;
  --accent-ink: #241f2e;
  --good: #4f7a4f;
  --bad: #a24f4f;
  --shadow: 0 6px 20px rgba(36,31,46,0.10), inset 0 1px 0 rgba(255,255,255,0.6);
  --ease: cubic-bezier(0.22,1,0.36,1);
  --dur: 220ms;
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, ui-serif, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
}

:root[data-theme="dark"] {
  --bg: #17141f;
  --card: rgba(45,40,58,0.62);
  --ink: #f2eee2;
  --ink-soft: #a89fb3;
  --line: rgba(255,255,255,0.09);
  --accent: #d8b34e;
  --accent-ink: #1b1826;
  --good: #7fbf7f;
  --bad: #d98080;
  --shadow: 0 6px 20px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #17141f;
    --card: rgba(45,40,58,0.62);
    --ink: #f2eee2;
    --ink-soft: #a89fb3;
    --line: rgba(255,255,255,0.09);
    --accent: #d8b34e;
    --accent-ink: #1b1826;
    --good: #7fbf7f;
    --bad: #d98080;
    --shadow: 0 6px 20px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05);
  }
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  overscroll-behavior-x: none;
  -webkit-tap-highlight-color: transparent;
}
h1, h2, h3 { font-family: var(--font-display); margin: 0; }
button { font-family: inherit; }

#app {
  max-width: 520px;
  margin: 0 auto;
  min-height: 100dvh;
  padding: max(20px, env(safe-area-inset-top)) 20px calc(90px + env(safe-area-inset-bottom));
  position: relative;
}

.view.hidden { display: none; }

.top-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.top-row h1 { font-size: 1.8rem; }
.top-row h2 { font-size: 1.5rem; }

.streak-pill {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  font-weight: 600;
  box-shadow: var(--shadow);
}

#today-summary { color: var(--ink-soft); margin-bottom: 16px; font-size: 0.95rem; }

.ex-row {
  display: flex; align-items: center; gap: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 16px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.ex-row:active { transform: scale(0.98); }
.ex-row.done { opacity: 0.5; }
.ex-icon { font-size: 1.4rem; width: 34px; text-align: center; flex-shrink: 0; }
.ex-main { flex: 1; min-width: 0; }
.ex-topic { font-size: 0.78rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.03em; }
.ex-prompt { font-family: var(--font-display); font-size: 1.05rem; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ex-check { font-size: 1.2rem; color: var(--good); flex-shrink: 0; }

.empty-msg { color: var(--ink-soft); font-family: var(--font-display); font-size: 1.15rem; text-align: center; margin-top: 60px; }
.hidden { display: none !important; }

/* Runner */
#view-runner {
  position: fixed; inset: 0; z-index: 20;
  background: var(--bg);
  display: flex; flex-direction: column;
  animation: sheet-rise var(--dur) var(--ease);
}
@keyframes sheet-rise { from { transform: translateY(24px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.runner-header {
  display: flex; align-items: center; gap: 12px;
  padding: max(16px, env(safe-area-inset-top)) 16px 12px;
  border-bottom: 1px solid var(--line);
}
.icon-btn {
  background: none; border: none; font-size: 1.2rem; color: var(--ink-soft);
  padding: 6px; cursor: pointer; line-height: 1;
}
.runner-dots { display: flex; gap: 5px; flex: 1; justify-content: center; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--line); }
.dot.current { background: var(--accent); transform: scale(1.3); }
.dot.done { background: var(--good); }
.runner-topic-chip { font-size: 0.72rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.03em; width: 70px; text-align: right; }
.runner-body { flex: 1; overflow-y: auto; padding: 24px 22px 40px; max-width: 520px; margin: 0 auto; width: 100%; }

.q-prompt { font-family: var(--font-display); font-size: 1.4rem; line-height: 1.4; margin-bottom: 26px; }
.q-scenario { font-size: 1.02rem; color: var(--ink-soft); line-height: 1.5; margin-bottom: 14px; }

.opt-btn {
  display: block; width: 100%; text-align: left;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 15px 16px; margin-bottom: 10px; font-size: 1rem; color: var(--ink);
  cursor: pointer; box-shadow: var(--shadow);
  transition: transform 120ms var(--ease);
}
.opt-btn:active { transform: scale(0.98); }
.opt-btn.correct { border-color: var(--good); background: color-mix(in srgb, var(--good) 16%, var(--card)); }
.opt-btn.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 16%, var(--card)); }
.opt-btn[disabled] { cursor: default; }

.fill-input {
  width: 100%; font-size: 1.1rem; padding: 14px 16px;
  border: 1px solid var(--line); border-radius: 14px;
  background: var(--card); color: var(--ink); margin-bottom: 14px;
  font-family: var(--font-body);
}
.fill-input:focus { outline: 2px solid var(--accent); }

.explain-box {
  margin-top: 18px; padding: 16px; border-radius: 14px;
  background: var(--card); border: 1px solid var(--line);
  animation: fade-up 220ms var(--ease);
}
@keyframes fade-up { from { opacity:0; transform: translateY(6px);} to {opacity:1; transform:none;} }
.explain-verdict { font-weight: 700; margin-bottom: 6px; }
.explain-verdict.correct { color: var(--good); }
.explain-verdict.wrong { color: var(--bad); }
.explain-text { color: var(--ink-soft); font-size: 0.95rem; line-height: 1.5; }
.explain-source { color: var(--ink-soft); font-size: 0.8rem; margin-top: 8px; font-style: italic; }

.primary-btn {
  display: block; width: 100%; padding: 15px; margin-top: 18px;
  background: var(--accent); color: var(--accent-ink); border: none; border-radius: 14px;
  font-size: 1.05rem; font-weight: 700; cursor: pointer;
  box-shadow: 0 3px 10px rgba(0,0,0,0.14), inset 0 1px 0 rgba(255,255,255,0.3);
}
.primary-btn:active { transform: scale(0.98); }
.ghost-btn {
  display: block; width: 100%; padding: 13px; margin-top: 10px;
  background: none; color: var(--ink-soft); border: 1px solid var(--line); border-radius: 14px;
  font-size: 0.95rem; cursor: pointer;
}

.reflect-textarea {
  width: 100%; min-height: 110px; padding: 14px; border-radius: 14px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  font-family: var(--font-body); font-size: 1rem; resize: vertical;
}

.passage-box {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 20px; font-family: var(--font-display); font-size: 1.15rem; line-height: 1.6;
  margin-bottom: 18px;
}
.rec-row { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.rec-btn {
  width: 64px; height: 64px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--bad); color: white; font-size: 1.4rem;
  box-shadow: 0 3px 10px rgba(0,0,0,0.2);
}
.rec-btn.recording { animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(162,79,79,0.5);} 50% { box-shadow: 0 0 0 10px rgba(162,79,79,0);} }
.rec-status { color: var(--ink-soft); font-size: 0.9rem; }
.rubric-item {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 4px; border-bottom: 1px solid var(--line);
  font-size: 0.98rem; cursor: pointer;
}
.rubric-item input { width: 18px; height: 18px; accent-color: var(--good); }

/* Topics */
.topic-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 16px; margin-bottom: 10px; box-shadow: var(--shadow); cursor: pointer;
}
.topic-icon { font-size: 1.6rem; }
.topic-main { flex: 1; }
.topic-name { font-family: var(--font-display); font-size: 1.1rem; }
.topic-blurb { color: var(--ink-soft); font-size: 0.85rem; margin-top: 2px; }
.topic-count { color: var(--ink-soft); font-size: 0.8rem; margin-top: 6px; }
.bar-track { height: 6px; border-radius: 3px; background: var(--line); margin-top: 8px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 3px; background: var(--accent); }

/* Progress */
.stat-row { display: flex; gap: 12px; margin-bottom: 20px; }
.stat-card {
  flex: 1; background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 16px; text-align: center; box-shadow: var(--shadow);
}
.stat-num { font-family: var(--font-display); font-size: 1.7rem; }
.stat-label { color: var(--ink-soft); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; margin-top: 2px; }
.mastery-row { margin-bottom: 14px; }
.mastery-top { display: flex; justify-content: space-between; font-size: 0.9rem; margin-bottom: 4px; }
.mastery-topic { display: flex; align-items: center; gap: 6px; }
.mastery-pct { color: var(--ink-soft); }

/* Tab bar */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 15;
  display: flex; justify-content: center; gap: 6px;
  padding: 10px max(10px, env(safe-area-inset-left)) calc(10px + env(safe-area-inset-bottom));
  background: var(--card); backdrop-filter: blur(20px) saturate(180%); -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid var(--line);
}
.tab-btn {
  background: none; border: none; color: var(--ink-soft); cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  font-size: 0.72rem; padding: 6px 22px; border-radius: 12px;
  max-width: 520px; flex: 1;
}
.tab-btn.active { color: var(--accent); }
.tab-icon { font-size: 1.25rem; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}