/* PM Gym — Design Tokens & Theme (Modern Product Studio) */
:root {
  /* Layout */
  --max-w: 1100px;
  --gutter: 1.25rem;
  --radius: 10px;
  --radius-sm: 6px;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;

  /* Colors — Light (Zinc + Cobalt) */
  --bg: #fafafa;
  --bg-card: #ffffff;
  --bg-subtle: #f4f4f5;
  --border: #e4e4e7;
  --border-subtle: #f4f4f5;
  --fg: #09090b;
  --fg-2: #52525b;
  --fg-3: #a1a1aa;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eff6ff;
  --accent-text: #2563eb;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --danger: #ef4444;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, 0.08), 0 4px 8px -2px rgba(0, 0, 0, 0.03);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #09090b;
    --bg-card: #121215;
    --bg-subtle: #18181b;
    --border: #27272a;
    --border-subtle: #1f1f23;
    --fg: #f4f4f5;
    --fg-2: #a1a1aa;
    --fg-3: #71717a;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --accent-soft: rgba(59, 130, 246, 0.12);
    --accent-text: #60a5fa;
    --success: #34d399;
    --success-bg: #064e3b;
    --warning: #fbbf24;
    --warning-bg: #451a03;
    --danger: #f87171;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, 0.6);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #09090b;
  --bg-card: #121215;
  --bg-subtle: #18181b;
  --border: #27272a;
  --border-subtle: #1f1f23;
  --fg: #f4f4f5;
  --fg-2: #a1a1aa;
  --fg-3: #71717a;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --accent-soft: rgba(59, 130, 246, 0.12);
  --accent-text: #60a5fa;
  --success: #34d399;
  --success-bg: #064e3b;
  --warning: #fbbf24;
  --warning-bg: #451a03;
  --danger: #f87171;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, 0.6);
  color-scheme: dark;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans); letter-spacing: -0.01em;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-sans); letter-spacing: -0.025em;
  line-height: 1.25;
  text-wrap: balance;
  color: var(--fg);
}

a { color: var(--accent-text); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; }

/* ─── Navigation ─── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 var(--gutter);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-logo-icon {
  width: 30px;
  height: 30px;
  background: var(--fg);
  color: var(--bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.nav-logo-text {
  font-family: var(--font-sans); letter-spacing: -0.025em;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--fg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
  justify-content: center;
}

.nav-link {
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--fg-2);
  cursor: pointer;
  border: none;
  background: none;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.nav-link:hover { background: var(--bg-subtle); color: var(--fg); }
.nav-link.active {
  background: var(--bg-subtle);
  color: var(--fg);
  font-weight: 600;
  box-shadow: inset 0 0 0 1px var(--border);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.streak-badge {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.7rem;
  background: var(--warning-bg);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--warning);
}

.btn-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
  cursor: pointer;
  font-size: 16px;
  transition: background 0.15s, border-color 0.15s;
  color: var(--fg-2);
}

.btn-icon:hover { background: var(--bg-subtle); border-color: var(--accent); color: var(--accent); }

/* ─── Sections / Views ─── */
.view { display: none; }
.view.active { display: block; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ─── Hero / Landing ─── */
.hero {
  padding: 5rem var(--gutter) 4rem;
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--fg-2);
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  line-height: 1.1;
}

.hero-title .accent { color: var(--accent); }

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--fg-2);
  max-width: 560px;
  margin: 0 auto 2rem;
}

.hero-for {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.for-chip {
  padding: 0.3rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--fg-2);
  font-weight: 500;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: var(--fg);
  color: var(--bg);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.hero-cta:hover {
  background: var(--fg);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  opacity: 0.92;
}

.hero-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
}

.stat { text-align: center; }
.stat-num {
  font-family: var(--font-sans); letter-spacing: -0.025em;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.stat-label { font-size: 0.85rem; color: var(--fg-3); margin-top: 0.15rem; }

/* ─── Level Selection ─── */
.levels-view { padding: 3rem 0 4rem; }
.section-header { text-align: center; margin-bottom: 2.5rem; }
.section-header h2 { font-size: 2rem; font-weight: 700; margin: 0 0 0.5rem; }
.section-header p { color: var(--fg-2); font-size: 1rem; margin: 0; }

.levels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  max-width: 900px;
  margin: 0 auto;
}

.level-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  cursor: pointer;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.level-card .btn-level {
  margin-top: auto;
}

.level-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.2s;
}

.level-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.level-card:hover::before { opacity: 0.04; }

.level-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.level-title {
  font-family: var(--font-sans); letter-spacing: -0.025em;
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
}
.level-subtitle { color: var(--fg-3); font-size: 0.85rem; font-style: italic; margin: 0 0 0.75rem; }
.level-desc { font-size: 0.9rem; color: var(--fg-2); margin: 0 0 1.25rem; line-height: 1.5; }

.level-topics {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 1.25rem;
}

.level-topic-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--fg-2);
}

.level-topic-item.done { color: var(--success); }
.level-topic-item.done .topic-dot { background: var(--success); }
.topic-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}

.level-progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.level-progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.4s ease;
}

.btn-level {
  width: 100%;
  padding: 0.75rem;
  background: var(--accent-soft);
  color: var(--accent-text);
  border: 1.5px solid var(--accent);
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
  position: relative;
}

.btn-level:hover { background: var(--accent); color: #fff; }

/* ─── Topics View ─── */
.topics-view { padding: 2.5rem 0 4rem; }

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 8px;
  font-size: 0.875rem;
  color: var(--fg-2);
  cursor: pointer;
  margin-bottom: 1.5rem;
  font-family: inherit;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.back-btn:hover { background: var(--bg-subtle); color: var(--fg); border-color: var(--accent); }

.level-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.level-header-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.level-header-icon { font-size: 2.5rem; }
.level-header h2 { font-size: 1.75rem; font-weight: 700; margin: 0; }
.level-header p { color: var(--fg-2); margin: 0.25rem 0 0; }

.overall-progress {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
}

.overall-progress-bar {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.overall-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #9179fa);
  border-radius: 3px;
  transition: width 0.5s ease;
}

.progress-label { font-size: 0.8rem; color: var(--fg-3); font-weight: 600; white-space: nowrap; font-variant-numeric: tabular-nums; }

.topics-list {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.topic-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.1s;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.topic-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateX(3px);
}

.topic-card.completed { border-left: 3px solid var(--success); }
.topic-card.case-study { border-left: 3px solid var(--accent); }

.topic-left { flex: 1; min-width: 0; }
.topic-title {
  font-family: var(--font-sans); letter-spacing: -0.025em;
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.3rem;
}

.topic-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.topic-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.65rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-duration { background: var(--bg-subtle); color: var(--fg-3); }
.badge-done { background: var(--success-bg); color: var(--success); }
.badge-case { background: var(--accent-soft); color: var(--accent-text); }
.badge-score { background: var(--warning-bg); color: var(--warning); }

.topic-arrow { color: var(--fg-3); font-size: 1.2rem; flex-shrink: 0; }
.topic-card:hover .topic-arrow { color: var(--accent); }

/* ─── Module View (Lesson/Quiz/Resources) ─── */
.module-view { padding: 2.5rem 0 5rem; max-width: 780px; }

.module-tabs {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-subtle);
  padding: 4px;
  border-radius: var(--radius-sm);
  margin-bottom: 2rem;
}

.tab-btn {
  flex: 1;
  padding: 0.6rem 1rem;
  border: none;
  background: none;
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--fg-3);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.tab-btn.active { background: var(--bg-card); color: var(--fg); box-shadow: var(--shadow-sm); }
.tab-btn:hover:not(.active) { color: var(--fg-2); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ─── Lesson Content ─── */
.lesson-content {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--fg);
}

.lesson-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  color: var(--fg);
}

.lesson-content h3:first-child { margin-top: 0; }

.lesson-content p {
  margin: 0 0 1rem;
  color: var(--fg);
}

.lesson-content ul, .lesson-content ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
  color: var(--fg);
}

.lesson-content li { margin-bottom: 0.35rem; }

.lesson-content strong { font-weight: 700; color: var(--fg); }

.lesson-content blockquote {
  margin: 1.25rem 0;
  padding: 0.75rem 1.25rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--fg-2);
}

.lesson-done-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  padding: 0.875rem 1.75rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
}

.lesson-done-btn:hover { background: var(--accent-hover); transform: translateY(-1px); }
.lesson-done-btn.completed { background: var(--success); }

/* ─── Quiz ─── */
.quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.75rem;
}

.quiz-progress-text { font-size: 0.875rem; color: var(--fg-3); font-variant-numeric: tabular-nums; }
.quiz-progress-dots { display: flex; gap: 6px; }
.quiz-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.2s;
}
.quiz-dot.answered { background: var(--accent); }
.quiz-dot.correct { background: var(--success); }
.quiz-dot.wrong { background: var(--danger); }

.question-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
}

.question-text {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.5;
  margin: 0 0 1.5rem;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.option-btn {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.9rem 1.1rem;
  background: var(--bg-subtle);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: 0.925rem;
  color: var(--fg);
  line-height: 1.5;
  transition: border-color 0.15s, background 0.15s;
}

.option-btn:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-soft); }

.option-btn:disabled { cursor: default; }

.option-btn.correct { border-color: var(--success); background: var(--success-bg); color: var(--success); }
.option-btn.wrong { border-color: var(--danger); background: #fef2f2; color: var(--danger); }
:root[data-theme="dark"] .option-btn.wrong { background: #2d0f0f; }

.option-letter {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--fg-2);
  font-variant-numeric: tabular-nums;
}

.option-btn.correct .option-letter { background: var(--success); border-color: var(--success); color: #fff; }
.option-btn.wrong .option-letter { background: var(--danger); border-color: var(--danger); color: #fff; }

.explanation {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  font-size: 0.9rem;
  color: var(--fg-2);
  line-height: 1.6;
  animation: slideIn 0.25s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.quiz-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
}

.btn-next {
  padding: 0.7rem 1.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-next:hover { background: var(--accent-hover); }
.btn-next:disabled { opacity: 0.5; cursor: default; }

/* Quiz Results */
.quiz-results {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  text-align: center;
  animation: slideIn 0.3s ease;
}

.result-score-circle {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 4px solid var(--accent);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  background: var(--accent-soft);
}

.result-score-num {
  font-family: var(--font-sans); letter-spacing: -0.025em;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-text);
  line-height: 1;
}
.result-score-denom { font-size: 0.75rem; color: var(--fg-3); }

.result-title { font-size: 1.4rem; font-weight: 700; margin: 0 0 0.5rem; }
.result-desc { color: var(--fg-2); font-size: 0.95rem; margin: 0 0 1.75rem; }

.result-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

.btn-secondary {
  padding: 0.7rem 1.5rem;
  background: var(--bg-subtle);
  color: var(--fg-2);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.btn-secondary:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-text); }

/* ─── Case Study ─── */
.case-study-banner {
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--bg-subtle) 100%);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.75rem;
}

.case-label {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.75rem;
  background: var(--accent);
  color: #fff;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.case-title { font-size: 1.3rem; font-weight: 700; margin: 0 0 0.75rem; }
.case-context { font-size: 0.95rem; color: var(--fg-2); margin: 0; line-height: 1.65; }

.case-prompt {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.case-prompt h3 { font-size: 1rem; font-weight: 700; margin: 0 0 0.75rem; }
.case-prompt ol { margin: 0; padding-left: 1.25rem; }
.case-prompt li { margin-bottom: 0.5rem; font-size: 0.95rem; color: var(--fg-2); }

.case-textarea {
  width: 100%;
  min-height: 200px;
  padding: 1rem;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--fg);
  resize: vertical;
  transition: border-color 0.15s;
  line-height: 1.6;
  margin-bottom: 1rem;
}
.case-textarea:focus { outline: none; border-color: var(--accent); }

.reveal-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.75rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
}
.reveal-btn:hover { background: var(--accent-hover); transform: translateY(-1px); }

.model-answer {
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  animation: slideIn 0.3s ease;
  margin-bottom: 1.5rem;
}

.model-answer-header {
  padding: 1rem 1.5rem;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.model-answer-body {
  padding: 1.5rem;
  background: var(--bg-card);
}

.model-answer-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 1.5rem 0 0.5rem;
}
.model-answer-body h3:first-child { margin-top: 0; }
.model-answer-body p { font-size: 0.925rem; color: var(--fg-2); margin: 0 0 0.75rem; }
.model-answer-body ul { margin: 0 0 0.75rem; padding-left: 1.25rem; }
.model-answer-body li { font-size: 0.925rem; color: var(--fg-2); margin-bottom: 0.35rem; }
.model-answer-body strong { color: var(--fg); }

.rubric-section { margin-bottom: 1.5rem; }
.rubric-section h3 {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--fg-3);
  margin: 0 0 0.75rem;
}

.rubric-grid {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.rubric-row {
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
  padding: 0.875rem 1rem;
}

.rubric-dimension {
  font-weight: 700;
  font-size: 0.875rem;
  margin-bottom: 0.35rem;
  color: var(--fg);
}

.rubric-strong {
  font-size: 0.82rem;
  color: var(--success);
  margin-bottom: 0.2rem;
  padding-left: 1rem;
  position: relative;
}
.rubric-strong::before { content: '✓'; position: absolute; left: 0; }

.rubric-weak {
  font-size: 0.82rem;
  color: var(--danger);
  padding-left: 1rem;
  position: relative;
}
.rubric-weak::before { content: '✗'; position: absolute; left: 0; }

/* ─── Resources ─── */
.resources-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.resource-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s, box-shadow 0.15s;
  text-decoration: none;
  color: var(--fg);
}

.resource-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.resource-icon {
  width: 38px;
  height: 38px;
  background: var(--accent-soft);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.resource-info { flex: 1; min-width: 0; }
.resource-title { font-weight: 600; font-size: 0.95rem; margin: 0 0 0.2rem; }
.resource-desc { font-size: 0.82rem; color: var(--fg-3); margin: 0; line-height: 1.4; }

.resource-arrow { color: var(--fg-3); font-size: 1rem; flex-shrink: 0; margin-top: 2px; }

/* ─── Resource Library ─── */
.library-view { padding: 3rem 0 5rem; }

.library-disclaimer {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 0.875rem 1rem;
  font-size: 0.875rem;
  color: var(--fg-2);
  margin-bottom: 2.5rem;
  line-height: 1.5;
}

.library-disclaimer .disclaimer-icon {
  flex-shrink: 0;
  font-size: 1rem;
  margin-top: 0.05rem;
}

.library-disclaimer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.library-disclaimer a:hover {
  text-decoration: underline;
}

.resource-categories {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.resource-category h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
}

/* ─── Dashboard ─── */
.dashboard-view { padding: 3rem 0 5rem; }

.dashboard-top {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.stat-card-label { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--fg-3); margin-bottom: 0.5rem; }
.stat-card-value {
  font-family: var(--font-sans); letter-spacing: -0.025em;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-text);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 0.2rem;
}
.stat-card-sub { font-size: 0.8rem; color: var(--fg-3); }

.dashboard-sections {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.dashboard-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.875rem;
}

.topic-progress-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}
.topic-progress-row:last-child { border-bottom: none; }
.topic-progress-name { flex: 1; font-size: 0.9rem; min-width: 0; }
.topic-progress-status {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  white-space: nowrap;
}
.status-done { background: var(--success-bg); color: var(--success); }
.status-progress { background: var(--accent-soft); color: var(--accent-text); }
.status-todo { background: var(--bg-subtle); color: var(--fg-3); }

.weak-area {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}
.weak-area:last-child { border-bottom: none; }
.weak-area-name { font-size: 0.9rem; }
.weak-area-score {
  font-family: var(--font-sans); letter-spacing: -0.025em;
  font-size: 0.9rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ─── Toast ─── */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--fg);
  color: var(--bg);
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  z-index: 999;
  white-space: nowrap;
}

.toast.show { transform: translateX(-50%) translateY(0); }

/* ─── Utility ─── */
.hidden { display: none !important; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--accent-soft);
  color: var(--accent-text);
}

/* ─── Mobile ─── */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding: 3rem var(--gutter) 2.5rem; }
  .hero-stats { flex-direction: column; gap: 1.5rem; align-items: center; }
  .levels-grid { grid-template-columns: 1fr; }
  .module-view { padding: 1.5rem 0 4rem; }
  .quiz-results { padding: 1.5rem; }
  .case-study-banner { padding: 1.25rem; }
  .dashboard-top { grid-template-columns: repeat(2, 1fr); }
  .nav-logo-text { display: none; }

  .mobile-nav {
    display: flex !important;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 0.5rem 0 calc(0.5rem + env(safe-area-inset-bottom, 0px));
    z-index: 100;
    gap: 0;
  }

  .mobile-nav-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    padding: 0.5rem 0.25rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 0.62rem;
    font-family: inherit;
    font-weight: 600;
    color: var(--fg-3);
    transition: color 0.15s;
  }

  .mobile-nav-btn.active { color: var(--accent-text); }
  .mobile-nav-icon { font-size: 1.2rem; }

  body { padding-bottom: 64px; }
}

.mobile-nav { display: none; }

@media (max-width: 480px) {
  .result-actions { flex-direction: column; }
  .result-actions .btn-secondary, .result-actions .btn-next { width: 100%; justify-content: center; }
}

/* ─── Scroll behavior ─── */
html { scroll-behavior: smooth; }

/* ─── Focus visible ─── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ─── WIP Banner ─── */
.wip-banner {
  background: var(--accent-soft);
  color: var(--accent-text);
  font-size: 0.82rem;
  font-weight: 500;
  text-align: center;
  padding: 0.5rem 1rem;
  line-height: 1.4;
}

.wip-banner a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.wip-banner a:hover { text-decoration: underline; }

/* ─── Submit Scenario Section ─── */
.submit-scenario-section {
  max-width: 720px;
  margin: 3rem auto 0;
  padding: 0 var(--gutter);
}

.submit-scenario-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: var(--bg-card);
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
}

.submit-scenario-text h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
}

.submit-scenario-text p {
  font-size: 0.875rem;
  color: var(--fg-2);
  margin: 0;
  line-height: 1.55;
}

.submit-scenario-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: 0.65rem 1.25rem;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.15s;
  white-space: nowrap;
}

.submit-scenario-btn:hover { background: var(--accent-hover); }

@media (max-width: 600px) {
  .submit-scenario-inner {
    flex-direction: column;
    padding: 1.25rem;
    text-align: center;
  }

  .submit-scenario-btn { width: 100%; justify-content: center; }
}

/* ─── About Section ─── */
.about-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 760px;
  margin: 0 auto;
}

.about-card {
  display: flex;
  gap: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.about-avatar {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-sans); letter-spacing: -0.025em;
  font-weight: 700;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.02em;
}

.about-bio h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
}

.about-role {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 0.25rem;
}

.about-location {
  font-size: 0.85rem;
  color: var(--fg-2);
  margin: 0 0 1rem;
}

.about-text {
  font-size: 0.9rem;
  color: var(--fg-2);
  line-height: 1.65;
  margin: 0 0 0.75rem;
}

.about-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

.about-link {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.875rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  background: var(--accent-soft);
  color: var(--accent-text);
  transition: background 0.15s;
}

.about-link:hover {
  background: var(--border);
}

.about-contribute {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.about-contribute h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
}

.about-contribute p {
  font-size: 0.9rem;
  color: var(--fg-2);
  line-height: 1.65;
  margin: 0 0 0.625rem;
}

.about-contribute-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

@media (max-width: 560px) {
  .about-card {
    flex-direction: column;
    gap: 1.25rem;
    padding: 1.5rem;
  }

  .about-contribute {
    padding: 1.5rem;
  }

  .about-contribute-actions {
    flex-direction: column;
  }

  .about-contribute-actions a {
    text-align: center;
    justify-content: center;
  }
}


.level-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-text);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  margin-bottom: 0.85rem;
  width: fit-content;
}

.level-icon {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.level-icon-emoji {
  font-size: 1.35rem;
}

/* Step numbers in How PM Gym Works */
.step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-subtle);
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 2px 7px;
  width: fit-content;
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}

/* Announcement pill */
.announcement-pill {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--accent);
  color: #ffffff;
  margin-right: 0.5rem;
  display: inline-block;
  vertical-align: middle;
}


/* ─── Refined UI Polish: Monospace, Hover States, Mobile SVGs, Quiz Feedback ─── */
.progress-label,
.result-score-num,
.result-score-denom,
.topic-badge.badge-duration,
.topic-badge.badge-score {
  font-family: var(--font-mono);
}

.level-card {
  transition: border-color 0.18s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.18s cubic-bezier(0.16, 1, 0.3, 1), transform 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}
.level-card:hover {
  border-color: var(--accent);
  box-shadow: 0 12px 30px -8px rgba(0, 0, 0, 0.1);
  transform: translateY(-3px);
}

.topic-card {
  transition: border-color 0.18s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.18s cubic-bezier(0.16, 1, 0.3, 1), transform 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}
.topic-card:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 18px -3px rgba(0, 0, 0, 0.07);
  transform: translateY(-2px);
}

.mobile-nav-icon {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
}
.mobile-nav-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--fg-3);
  transition: stroke 0.15s ease, transform 0.15s ease;
}
.mobile-nav-btn.active .mobile-nav-icon svg {
  stroke: var(--accent-text);
  transform: scale(1.08);
}

.resource-icon {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--fg-2);
  flex-shrink: 0;
  transition: color 0.15s, border-color 0.15s, background-color 0.15s;
}
.resource-item:hover .resource-icon {
  color: var(--accent-text);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.library-disclaimer .disclaimer-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.quiz-option.correct {
  background: var(--success-bg) !important;
  border-color: var(--success) !important;
}
.quiz-option.incorrect {
  background: rgba(239, 68, 68, 0.08) !important;
  border-color: var(--danger) !important;
}