@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  /* Warm, soft, low-contrast palette — calm study space, not a game HUD */
  --cream:      #FAF6EE;
  --cream-2:    #F1EADA;
  --card:       #FFFFFF;
  --card-soft:  #FBF8F2;
  --ink:        #4A4438;
  --ink-soft:   #8B8371;
  --line:       #E7DFCE;

  --sage:       #86A88C;
  --sage-deep:  #5F8368;
  --sage-tint:  #E7F0E5;

  --honey:      #DDA45C;
  --honey-deep: #B9803A;
  --honey-tint: #FBF0DE;

  --rose:       #D98B78;
  --rose-deep:  #B85F4C;
  --rose-tint:  #FBEAE4;

  --sky:        #7FA0B0;
  --sky-tint:   #E7F0F3;

  --lav:        #A392BB;
  --lav-tint:   #F0EBF6;

  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 10px 28px rgba(74,68,56,0.08);
  --shadow-sm: 0 4px 12px rgba(74,68,56,0.06);
  font-size: 16px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--cream);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.mono { font-family: 'JetBrains Mono', monospace; }
h1, h2, h3, .display { font-family: 'Fraunces', serif; font-weight: 600; }

a { color: inherit; }
button { font-family: inherit; cursor: pointer; }

.app-shell {
  max-width: 1060px;
  margin: 0 auto;
  padding: 26px 20px 80px;
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
  flex-wrap: wrap;
  gap: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  color: var(--sage-deep);
}
.brand-mark { width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center; }
.topbar-stats { display: flex; gap: 10px; align-items: center; }
.pill {
  display: flex; align-items: center; gap: 6px;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.83rem;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}
.pill.streak { color: var(--honey-deep); }
.pill.xp { color: var(--sage-deep); }

.back-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--ink-soft); text-decoration: none;
  font-size: 0.88rem; font-weight: 600;
  background: none; border: none; padding: 0; margin-bottom: 16px;
}
.back-link:hover { color: var(--sage-deep); }

/* ---------- Views ---------- */
.view { display: none; }
.view.active { display: block; animation: fadeUp 0.35s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(6px);} to { opacity:1; transform:none; } }

/* ---------- Hero / trail ---------- */
.hero-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 28px 26px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.hero-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; flex-wrap: wrap; }
.hero-title { font-size: 1.55rem; margin: 0 0 6px; color: var(--ink); }
.hero-sub { color: var(--ink-soft); font-size: 0.93rem; margin: 0; max-width: 440px; line-height: 1.5; }

/* goal ring */
.goal-ring-wrap { display: flex; align-items: center; gap: 14px; }
.goal-ring { position: relative; width: 74px; height: 74px; flex-shrink: 0; }
.goal-ring svg { transform: rotate(-90deg); }
.goal-ring-label {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 0.95rem; color: var(--sage-deep);
}
.goal-text { font-size: 0.8rem; color: var(--ink-soft); }
.goal-text b { color: var(--ink); }

/* trail strip */
.trail-strip {
  margin-top: 24px;
  display: flex;
  align-items: center;
  overflow-x: auto;
  padding: 10px 4px 22px;
}
.trail-node-wrap { display: flex; align-items: center; flex-shrink: 0; }
.trail-node {
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--cream-2); border: 2px solid var(--line);
  font-size: 0.85rem; color: var(--ink-soft); font-weight: 700;
  flex-shrink: 0; position: relative;
}
.trail-node.done { background: var(--sage-tint); border-color: var(--sage); color: var(--sage-deep); }
.trail-node.today { border-color: var(--honey); box-shadow: 0 0 0 4px rgba(221,164,92,0.16); }
.trail-node .day-label {
  position: absolute; top: 38px; font-size: 0.6rem; color: var(--ink-soft); white-space: nowrap;
}
.trail-line { width: 20px; height: 2px; background: var(--line); flex-shrink: 0; }
.trail-line.done { background: var(--sage); }

.cta-row { display: flex; gap: 10px; margin-top: 30px; flex-wrap: wrap; }
.btn {
  border: none; border-radius: 12px; padding: 13px 22px;
  font-weight: 700; font-size: 0.92rem; letter-spacing: 0.01em;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--sage); color: #fff; }
.btn-primary:hover { box-shadow: 0 6px 16px rgba(95,131,104,0.28); background: var(--sage-deep); }
.btn-ghost { background: var(--cream-2); border: 1px solid var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--sage); color: var(--sage-deep); }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.xp-track {
  background: var(--cream-2); border-radius: 999px; height: 8px; overflow: hidden;
  border: 1px solid var(--line); margin-top: 8px;
}
.xp-fill { height: 100%; background: linear-gradient(90deg, var(--honey), #EBC07E); transition: width 0.4s ease; }

/* ---------- Badge shelf ---------- */
.badge-shelf {
  display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px;
}
.badge {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  width: 78px; text-align: center;
}
.badge-icon {
  width: 52px; height: 52px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; border: 2px solid var(--line); background: var(--cream-2);
  filter: grayscale(1); opacity: 0.45;
}
.badge.unlocked .badge-icon {
  filter: none; opacity: 1; background: var(--honey-tint); border-color: var(--honey);
  box-shadow: 0 4px 10px rgba(221,164,92,0.25);
}
.badge-name { font-size: 0.65rem; color: var(--ink-soft); line-height: 1.2; }
.badge.unlocked .badge-name { color: var(--ink); font-weight: 600; }

/* ---------- Grid of section cards ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.card h3 { margin: 0 0 3px; font-size: 1.02rem; }
.card .count { color: var(--ink-soft); font-size: 0.8rem; margin-bottom: 12px; }

.skill-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 11px 4px; border-top: 1px solid var(--line);
  gap: 12px; cursor: pointer; border-radius: 8px;
}
.skill-row:first-of-type { border-top: none; }
.skill-row:hover { background: var(--cream-2); }
.skill-row:hover .skill-name { color: var(--sage-deep); }
.skill-left { display: flex; align-items: center; gap: 10px; }
.skill-icon { font-size: 1.15rem; width: 24px; text-align: center; flex-shrink: 0; }
.skill-name { font-size: 0.87rem; font-weight: 600; }
.skill-meta { font-size: 0.72rem; color: var(--ink-soft); }
.mastery-bar-wrap { width: 76px; height: 6px; background: var(--cream-2); border-radius: 999px; overflow: hidden; flex-shrink: 0; }
.mastery-bar { height: 100%; background: var(--sage); }
.mastery-bar.low { background: var(--rose); }
.mastery-bar.mid { background: var(--honey); }

/* domain accent dots, used in section card headers */
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 7px; }
.dot-blue { background: var(--sky); }
.dot-sage { background: var(--sage); }
.dot-rose { background: var(--rose); }
.dot-lav { background: var(--lav); }
.dot-honey { background: var(--honey); }

/* ---------- Browse ---------- */
.filter-row { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
select, input[type=text] {
  background: var(--card); border: 1px solid var(--line); color: var(--ink);
  border-radius: 10px; padding: 9px 12px; font-size: 0.85rem; font-family: inherit;
}
.browse-list { display: flex; flex-direction: column; gap: 8px; }
.browse-item {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  cursor: pointer;
}
.browse-item:hover { border-color: var(--sage); }
.browse-item .qtext { font-size: 0.85rem; color: var(--ink); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tag { font-size: 0.68rem; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-soft); flex-shrink: 0; font-weight: 600; }
.tag.diff-Easy { color: var(--sage-deep); border-color: var(--sage); background: var(--sage-tint); }
.tag.diff-Medium { color: var(--honey-deep); border-color: var(--honey); background: var(--honey-tint); }
.tag.diff-Hard { color: var(--rose-deep); border-color: var(--rose); background: var(--rose-tint); }
.tag.done { color: var(--honey-deep); border-color: var(--honey); background: var(--honey-tint); }

/* ---------- Player ---------- */
.player-card {
  background: var(--card); color: var(--ink);
  border-radius: 22px; padding: 30px; box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.progress-track { height: 6px; background: var(--cream-2); border-radius: 999px; overflow: hidden; margin-bottom: 20px; }
.progress-fill { height: 100%; background: var(--sage); transition: width 0.3s ease; }
.q-meta-row { display: flex; gap: 8px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.combo-badge {
  font-size: 0.75rem; font-weight: 700; color: var(--honey-deep); background: var(--honey-tint);
  border: 1px solid var(--honey); border-radius: 999px; padding: 3px 10px; margin-left: auto;
}
.q-text { font-size: 1.04rem; line-height: 1.65; white-space: pre-line; margin-bottom: 22px; }
.q-image { max-width: 100%; border: 1px solid var(--line); border-radius: 12px; padding: 14px; background: #fff; margin-bottom: 20px; }
.choices { display: flex; flex-direction: column; gap: 10px; }
.choice-btn {
  text-align: left; background: var(--card-soft); border: 2px solid var(--line); border-radius: 14px;
  padding: 14px 16px; font-size: 0.92rem; line-height: 1.5; color: var(--ink);
  display: flex; gap: 12px; align-items: flex-start;
}
.choice-letter {
  flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: var(--cream-2);
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.8rem;
}
.choice-btn:hover { border-color: var(--sage); }
.choice-btn.selected { border-color: var(--honey); background: var(--honey-tint); }
.choice-btn.correct { border-color: var(--sage); background: var(--sage-tint); }
.choice-btn.incorrect { border-color: var(--rose); background: var(--rose-tint); }
.choice-btn.correct .choice-letter { background: var(--sage); color: #fff; }
.choice-btn.incorrect .choice-letter { background: var(--rose); color: #fff; }
.choice-btn:disabled { cursor: default; }

.gridin-row { display: flex; gap: 10px; align-items: center; }
.gridin-row input {
  background: var(--card-soft); border: 2px solid var(--line); color: var(--ink);
  border-radius: 10px; padding: 12px 14px; font-size: 1rem; width: 200px;
}

.feedback-banner {
  margin-top: 20px; padding: 14px 18px; border-radius: 14px; font-weight: 700;
  display: flex; align-items: center; gap: 10px; font-size: 0.92rem; position: relative; overflow: hidden;
}
.feedback-banner.correct { background: var(--sage-tint); color: var(--sage-deep); }
.feedback-banner.incorrect { background: var(--rose-tint); color: var(--rose-deep); }

/* ---------- Concept card (the "learn it" panel) ---------- */
.concept-card {
  margin-top: 18px; background: var(--sky-tint); border: 1px solid #C7DCE3;
  border-radius: 14px; padding: 18px 20px;
}
.concept-card .concept-head {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
  font-family: 'Fraunces', serif; font-weight: 600; font-size: 0.98rem; color: #3E6A7C;
}
.concept-card .concept-line { font-size: 0.87rem; line-height: 1.55; margin: 6px 0; color: var(--ink); }
.concept-card .concept-line b { color: #3E6A7C; }
.concept-card .concept-watch { color: var(--rose-deep); }

.quicktake-box {
  margin-top: 16px; background: var(--cream-2); border-radius: 12px; padding: 14px 16px;
  font-size: 0.9rem; line-height: 1.55; color: var(--ink);
}
.quicktake-box b { color: var(--sage-deep); }

.rationale-toggle {
  margin-top: 12px; background: none; border: none; color: var(--sage-deep); font-weight: 700;
  font-size: 0.83rem; padding: 6px 0; display: flex; align-items: center; gap: 5px;
}
.rationale-box {
  margin-top: 8px; background: var(--card-soft); border: 1px solid var(--line); border-radius: 12px; padding: 18px;
  font-size: 0.88rem; line-height: 1.6; color: var(--ink); white-space: pre-line; display: none;
}
.rationale-box.open { display: block; }
.rationale-box img { max-width: 100%; border-radius: 8px; margin-top: 10px; display: block; }

.player-footer { display: flex; justify-content: flex-end; margin-top: 22px; gap: 10px; }

/* ---------- Summary ---------- */
.summary-hero { text-align: center; padding: 36px 20px; }
.summary-hero .big-num { font-size: 3rem; font-weight: 700; font-family: 'Fraunces', serif; color: var(--sage-deep); }
.summary-stats { display: flex; justify-content: center; gap: 28px; margin-top: 22px; flex-wrap: wrap; }
.summary-stat { text-align: center; }
.summary-stat .num { font-size: 1.5rem; font-weight: 700; font-family: 'JetBrains Mono', monospace; color: var(--honey-deep); }
.summary-stat .label { font-size: 0.76rem; color: var(--ink-soft); margin-top: 2px; }
.summary-badges { margin-top: 26px; }
.summary-badges-title { font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 10px; }

footer.hint { text-align: center; color: var(--ink-soft); font-size: 0.78rem; margin-top: 46px; }

/* ---------- Full practice test mode ---------- */
.test-structure { margin-top: 18px; }
.test-structure-row {
  background: var(--cream-2); border-radius: 12px; padding: 12px 16px; margin-bottom: 8px;
  font-size: 0.88rem; color: var(--ink);
}
.test-structure-row b { color: var(--sage-deep); }

.test-topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; flex-wrap: wrap; gap: 10px;
}
.test-section-label { font-weight: 700; font-size: 0.92rem; color: var(--ink); }
.test-timer {
  font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 1rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 16px; color: var(--sage-deep); box-shadow: var(--shadow-sm);
}
.test-timer.warn { color: var(--rose-deep); border-color: var(--rose); background: var(--rose-tint); }

#flag-btn.flagged { border-color: var(--honey); color: var(--honey-deep); background: var(--honey-tint); }

.palette-wrap { margin-top: 18px; }
.palette-legend { display: flex; gap: 18px; font-size: 0.78rem; color: var(--ink-soft); margin-bottom: 10px; flex-wrap: wrap; }
.legend-dot { display: inline-block; width: 10px; height: 10px; border-radius: 3px; background: var(--cream-2); border: 1px solid var(--line); margin-right: 5px; vertical-align: middle; }
.legend-dot.answered { background: var(--sage-tint); border-color: var(--sage); }
.legend-dot.flagged { background: var(--honey-tint); border-color: var(--honey); }

.palette-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(38px, 1fr)); gap: 8px; }
.palette-cell {
  aspect-ratio: 1; display: flex; align-items: center; justify-content: center;
  border-radius: 9px; background: var(--card); border: 1.5px solid var(--line);
  font-size: 0.8rem; font-weight: 700; color: var(--ink-soft); cursor: pointer;
}
.palette-cell.answered { background: var(--sage-tint); border-color: var(--sage); color: var(--sage-deep); }
.palette-cell.flagged { box-shadow: inset 0 0 0 2px var(--honey); }
.palette-cell.current { border-color: var(--ink); border-width: 2px; color: var(--ink); }

.review-filter-btn.active { background: var(--sage); color: #fff; border-color: var(--sage); }

/* ---------- Celebration toast ---------- */
#celebration-toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-20px);
  background: var(--card); border: 1px solid var(--honey); box-shadow: var(--shadow);
  border-radius: 14px; padding: 14px 22px; display: flex; align-items: center; gap: 12px;
  opacity: 0; pointer-events: none; transition: all 0.35s ease; z-index: 999;
}
#celebration-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#celebration-toast .icon { font-size: 1.6rem; }
#celebration-toast .title { font-weight: 700; font-size: 0.9rem; color: var(--ink); }
#celebration-toast .sub { font-size: 0.76rem; color: var(--ink-soft); }