:root {
  color-scheme: light;
  --bg: #f7f2ec;
  --bg-elevated: rgba(255, 252, 247, 0.86);
  --surface: #fffdf9;
  --surface-strong: #ffffff;
  --surface-muted: #efe7de;
  --text: #1e2430;
  --text-soft: #586171;
  --line: rgba(30, 36, 48, 0.1);
  --shadow: 0 20px 50px rgba(45, 36, 26, 0.12);
  --shadow-soft: 0 10px 26px rgba(45, 36, 26, 0.08);
  --brand: #e56a31;
  --brand-deep: #21344d;
  --accent: #2d7c74;
  --success: #2d8b57;
  --danger: #be4d37;
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --space-1: 0.4rem;
  --space-2: 0.7rem;
  --space-3: 1rem;
  --space-4: 1.25rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --bg: #111723;
  --bg-elevated: rgba(23, 31, 46, 0.82);
  --surface: #1a2433;
  --surface-strong: #223146;
  --surface-muted: #2a3447;
  --text: #f5f0ea;
  --text-soft: #c0c9d5;
  --line: rgba(255, 255, 255, 0.08);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
  --shadow-soft: 0 12px 28px rgba(0, 0, 0, 0.18);
  --brand: #f18d57;
  --brand-deep: #dbe7fa;
  --accent: #5fc2b6;
  --success: #52c27f;
  --danger: #f0806d;
}

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

html,
body {
  min-height: 100%;
}

body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background:
    radial-gradient(circle at top left, rgba(229, 106, 49, 0.12), transparent 26%),
    radial-gradient(circle at bottom right, rgba(45, 124, 116, 0.14), transparent 32%),
    var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  background: none;
  color: inherit;
}

#app {
  min-height: 100vh;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: clamp(0.75rem, 3vw, 2rem);
}

.device-frame {
  width: min(100%, 1040px);
  min-height: calc(100vh - 1.5rem);
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  background: var(--bg-elevated);
  backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: 32px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.status-bar,
.top-bar,
.tab-bar {
  background: rgba(255, 255, 255, 0.18);
}

:root[data-theme='dark'] .status-bar,
:root[data-theme='dark'] .top-bar,
:root[data-theme='dark'] .tab-bar {
  background: rgba(9, 14, 20, 0.22);
}

.status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 1.25rem 0.4rem;
  font-size: 0.8rem;
  color: var(--text-soft);
}

.status-icons {
  display: flex;
  gap: 0.45rem;
  align-items: center;
}

.signal-bars {
  display: inline-flex;
  align-items: end;
  gap: 2px;
  height: 12px;
}

.signal-bars i {
  display: block;
  width: 3px;
  border-radius: 999px;
  background: currentColor;
}

.signal-bars i:nth-child(1) { height: 4px; opacity: 0.45; }
.signal-bars i:nth-child(2) { height: 6px; opacity: 0.6; }
.signal-bars i:nth-child(3) { height: 8px; opacity: 0.75; }
.signal-bars i:nth-child(4) { height: 11px; }

.battery-pill {
  width: 24px;
  height: 12px;
  border: 1.8px solid currentColor;
  border-radius: 4px;
  padding: 1px;
  position: relative;
}

.battery-pill::after {
  content: '';
  position: absolute;
  right: -4px;
  top: 3px;
  width: 2px;
  height: 4px;
  border-radius: 1px;
  background: currentColor;
}

.battery-pill span {
  display: block;
  width: 78%;
  height: 100%;
  border-radius: 2px;
  background: currentColor;
}

.top-bar {
  display: grid;
  grid-template-columns: 48px 1fr 48px;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 1rem 1rem;
  border-bottom: 1px solid var(--line);
}

.top-bar-title-wrap {
  text-align: center;
}

.top-bar-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.75rem;
  line-height: 1;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.top-bar-subtitle {
  margin-top: 0.2rem;
  color: var(--text-soft);
  font-size: 0.8rem;
}

.top-bar-side,
.top-bar-actions {
  display: flex;
  justify-content: center;
}

.icon-btn,
.top-spacer {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  font-size: 1.1rem;
}

.icon-btn {
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
}

.screen-body {
  overflow-y: auto;
  padding: 1rem;
}

.section-block + .section-block,
.section-block + .info-panel,
.hero-card + .section-block,
.stats-grid + .section-block {
  margin-top: var(--space-5);
}

.hero-card,
.info-panel,
.lesson-banner,
.slide-frame,
.stat-card,
.progress-row,
.glossary-item,
.empty-state {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.hero-card,
.info-panel,
.lesson-banner,
.slide-frame,
.empty-state {
  border-radius: var(--radius-xl);
}

.hero-card,
.info-panel,
.lesson-banner,
.slide-frame,
.empty-state,
.stat-card,
.progress-row,
.glossary-item {
  padding: clamp(1rem, 2vw, 1.5rem);
}

.home-hero {
  background:
    linear-gradient(135deg, rgba(33, 52, 77, 0.96), rgba(57, 83, 111, 0.93)),
    var(--brand-deep);
  color: #fff;
}

.hero-copy h1,
.info-panel h2,
.lesson-banner h1,
.slide-card h2,
.section-heading h2,
.empty-state h2 {
  font-family: 'Barlow Condensed', sans-serif;
  letter-spacing: 0.01em;
}

.hero-copy h1 {
  font-size: clamp(2.2rem, 5vw, 3.7rem);
  line-height: 0.95;
  margin-top: var(--space-2);
}

.hero-copy p,
.info-panel p,
.lesson-banner p,
.section-copy,
.slide-card p,
.glossary-item p,
.progress-row p {
  line-height: 1.55;
  color: var(--text-soft);
}

.home-hero .hero-copy p {
  color: rgba(255, 255, 255, 0.82);
  margin-top: var(--space-3);
  max-width: 42rem;
}

.eyebrow,
.lesson-card-label,
.activity-meta,
.section-kicker,
.slide-count {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.74rem;
  font-weight: 700;
}

.eyebrow {
  color: var(--brand);
}

.home-hero .eyebrow,
.lesson-banner .eyebrow {
  color: rgba(255, 255, 255, 0.78);
}

.hero-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.summary-stat {
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
}

.summary-stat strong {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 2rem;
}

.summary-stat span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

.module-progress {
  margin-top: var(--space-5);
}

.module-progress-label,
.section-heading,
.lesson-card-main,
.lesson-card-meta,
.slide-meta-row,
.slide-controls,
.progress-row,
.activity-row,
.tab-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.progress-track {
  margin-top: 0.5rem;
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}

.progress-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #f4b26b, #f9d889);
}

.section-heading h2,
.info-panel h2,
.slide-card h2,
.lesson-banner h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 0.98;
}

.text-link {
  color: var(--brand);
  font-weight: 600;
  cursor: pointer;
}

.lesson-stack,
.activity-list,
.progress-list,
.glossary-list {
  display: grid;
  gap: var(--space-3);
}

.lesson-card-modern,
.activity-row {
  width: 100%;
  text-align: left;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
}

.lesson-card-modern {
  padding: 1.2rem;
  border-left: 6px solid var(--accent);
}

.lesson-card-label {
  color: var(--accent);
}

.lesson-card-modern h3,
.activity-row h3,
.glossary-item h3,
.progress-row h3 {
  font-size: 1.2rem;
  margin-top: 0.35rem;
  color: var(--text);
}

.lesson-card-modern p,
.activity-row p {
  margin-top: 0.45rem;
  color: var(--text-soft);
}

.lesson-card-main {
  align-items: start;
  gap: 1rem;
}

.lesson-card-meta {
  margin-top: 1rem;
  color: var(--text-soft);
  font-size: 0.88rem;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.progress-orb {
  width: 60px;
  height: 60px;
  position: relative;
  flex: 0 0 auto;
}

.progress-orb svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.progress-orb span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.progress-bg,
.progress-value {
  fill: none;
  stroke-width: 4px;
}

.progress-bg {
  stroke: rgba(88, 97, 113, 0.15);
}

.progress-value {
  stroke: var(--accent);
  stroke-linecap: round;
}

.lesson-banner {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--lesson-accent) 78%, #10131d 22%), var(--lesson-accent)),
    var(--lesson-accent);
  color: #fff;
}

.lesson-banner p,
.lesson-banner-meta {
  color: rgba(255, 255, 255, 0.82);
}

.lesson-banner-meta {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.aims-grid,
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.aim-card,
.stat-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.aim-card {
  padding: 1.1rem;
}

.aim-card span {
  display: inline-flex;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--brand);
  font-weight: 700;
}

.aim-card p {
  margin-top: 0.85rem;
  line-height: 1.5;
}

.activity-row {
  padding: 1rem;
  gap: 1rem;
}

.activity-row.done {
  border-color: color-mix(in srgb, var(--success) 42%, var(--line));
}

.activity-index,
.activity-chevron {
  flex: 0 0 auto;
}

.activity-index {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: var(--surface-muted);
  display: grid;
  place-items: center;
  font-weight: 700;
}

.activity-copy {
  flex: 1;
}

.activity-meta {
  color: var(--brand);
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.activity-chevron {
  font-size: 1.5rem;
  color: var(--text-soft);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: var(--space-3);
}

.chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  background: var(--surface-muted);
  color: var(--text);
  font-size: 0.9rem;
}

.chip-button {
  cursor: pointer;
}

.info-panel.subdued {
  background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--surface) 86%, var(--surface-muted)));
}

.search-input-wrap {
  display: grid;
  gap: 0.55rem;
}

.search-input-wrap span {
  font-size: 0.9rem;
  color: var(--text-soft);
}

.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0.9rem 1rem;
  background: var(--surface);
  color: var(--text);
}

.activity-shell {
  display: grid;
  grid-template-columns: minmax(240px, 300px) 1fr;
  gap: var(--space-4);
}

.activity-sidebar {
  align-self: start;
  position: sticky;
  top: 0;
  padding: 1.2rem;
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.activity-sidebar h1 {
  margin-top: var(--space-2);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 2.3rem;
  line-height: 0.95;
}

.activity-sidebar p {
  margin-top: var(--space-3);
  line-height: 1.55;
  color: var(--text-soft);
}

.activity-sidebar-meta {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.activity-sidebar-meta span,
.law-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  background: color-mix(in srgb, var(--brand) 16%, transparent);
  color: var(--brand);
  font-weight: 700;
  font-size: 0.8rem;
}

.slide-dots {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  margin-top: var(--space-5);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: rgba(88, 97, 113, 0.24);
  cursor: pointer;
}

.dot.active {
  width: 28px;
  background: var(--brand);
}

.slide-frame {
  min-height: 420px;
}

.slide-card {
  display: grid;
  gap: var(--space-3);
}

.slide-icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: var(--surface-muted);
  font-size: 1.4rem;
}

.slide-lead {
  font-size: 1.02rem;
}

.bullet-list {
  display: grid;
  gap: 0.7rem;
  padding-left: 1.25rem;
}

.bullet-list li {
  line-height: 1.55;
}

.callout-card,
.scenario-box,
.feedback-panel,
.reveal-card {
  border-radius: var(--radius-md);
  padding: 1rem;
}

.callout-card {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.scenario-box {
  background: color-mix(in srgb, var(--brand) 8%, transparent);
  border-left: 4px solid var(--brand);
}

.scenario-box p + p,
.reveal-content p + p {
  margin-top: 0.8rem;
}

.scenario-prompt {
  font-weight: 600;
}

.reveal-card {
  background: var(--surface-muted);
}

.reveal-card summary {
  cursor: pointer;
  font-weight: 700;
}

.reveal-content {
  margin-top: 0.9rem;
}

.answer-stack {
  display: grid;
  gap: 0.85rem;
}

.answer-option {
  width: 100%;
  text-align: left;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 0.9rem;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0.95rem 1rem;
  background: var(--surface-strong);
  cursor: pointer;
}

.answer-option.selected {
  border-color: color-mix(in srgb, var(--accent) 56%, var(--line));
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
}

.answer-option.correct {
  border-color: color-mix(in srgb, var(--success) 70%, var(--line));
  background: color-mix(in srgb, var(--success) 12%, var(--surface));
}

.answer-option.incorrect {
  border-color: color-mix(in srgb, var(--danger) 68%, var(--line));
  background: color-mix(in srgb, var(--danger) 10%, var(--surface));
}

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

.answer-letter {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--surface-muted);
  font-weight: 700;
}

.answer-actions {
  display: flex;
  justify-content: flex-start;
}

.feedback-panel.correct {
  background: color-mix(in srgb, var(--success) 12%, transparent);
  color: var(--text);
}

.feedback-panel.incorrect {
  background: color-mix(in srgb, var(--danger) 12%, transparent);
  color: var(--text);
}

.feedback-panel strong {
  display: block;
  margin-bottom: 0.4rem;
}

.reflection-area {
  width: 100%;
  min-height: 180px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  background: var(--surface-strong);
  color: var(--text);
}

.slide-controls {
  margin-top: var(--space-4);
  gap: 1rem;
}

.btn {
  min-height: 48px;
  padding: 0.8rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: var(--brand);
  color: white;
}

.btn-secondary,
.btn-ghost {
  border: 1px solid var(--line);
  background: var(--surface);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.glossary-group {
  scroll-margin-top: 1rem;
}

.glossary-item + .glossary-item {
  margin-top: var(--space-2);
}

.stats-grid {
  margin-bottom: var(--space-4);
}

.stat-card strong {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 2.6rem;
}

.stat-card span {
  color: var(--text-soft);
}

.progress-list {
  margin-top: var(--space-3);
}

.tab-bar {
  gap: 0.5rem;
  padding: 0.9rem 0.7rem calc(0.9rem + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
}

.tab-btn {
  flex: 1;
  min-height: 54px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  gap: 0.2rem;
  color: var(--text-soft);
  cursor: pointer;
}

.tab-btn span:first-child {
  font-size: 1.05rem;
}

.tab-btn span:last-child {
  font-size: 0.78rem;
  font-weight: 700;
}

.tab-btn.active {
  background: var(--surface);
  color: var(--brand);
  box-shadow: var(--shadow-soft);
}

.empty-state {
  text-align: center;
}

.empty-state p {
  margin-top: 0.75rem;
  color: var(--text-soft);
}

@media (max-width: 860px) {
  .activity-shell,
  .aims-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .activity-sidebar {
    position: static;
  }

  .hero-summary {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .app-shell {
    padding: 0;
  }

  .device-frame {
    min-height: 100vh;
    border-radius: 0;
    width: 100%;
    border-left: 0;
    border-right: 0;
  }

  .screen-body {
    padding: 0.9rem;
  }

  .lesson-card-main,
  .lesson-card-meta,
  .slide-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .progress-orb {
    width: 54px;
    height: 54px;
  }

  .module-progress-label,
  .lesson-banner-meta,
  .tab-bar {
    gap: 0.5rem;
  }
}