:root {
  color-scheme: dark;
  --topbar-offset: 0.6rem;
  --bg: #071218;
  --bg-soft: rgba(14, 27, 35, 0.92);
  --bg-elevated: rgba(15, 31, 40, 0.92);
  --surface: rgba(18, 36, 46, 0.94);
  --surface-strong: rgba(24, 46, 58, 0.98);
  --surface-tint: rgba(115, 224, 192, 0.08);
  --line: rgba(151, 197, 189, 0.16);
  --line-strong: rgba(151, 197, 189, 0.34);
  --text: #f3f8f8;
  --muted: #a8b9b6;
  --accent: #72dfbf;
  --accent-strong: #a9ffe0;
  --accent-alt: #ffb86e;
  --accent-alt-soft: rgba(255, 184, 110, 0.12);
  --danger: #ff8b8b;
  --shadow: 0 18px 55px rgba(0, 0, 0, 0.28);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --space-1: 0.45rem;
  --space-2: 0.7rem;
  --space-3: 0.95rem;
  --space-4: 1.15rem;
  --space-5: 1.45rem;
  --space-6: 1.8rem;
  --font-body: "Aptos", "Segoe UI Variable Text", "Segoe UI", sans-serif;
  --font-display: "Aptos Display", "Segoe UI Variable Display", "Segoe UI", sans-serif;
}

body[data-theme="light"] {
  color-scheme: light;
  --bg: #eef7f4;
  --bg-soft: rgba(246, 250, 249, 0.96);
  --bg-elevated: rgba(255, 255, 255, 0.94);
  --surface: rgba(255, 255, 255, 0.96);
  --surface-strong: rgba(255, 255, 255, 1);
  --surface-tint: rgba(21, 127, 104, 0.08);
  --line: rgba(13, 70, 57, 0.1);
  --line-strong: rgba(13, 70, 57, 0.22);
  --text: #102126;
  --muted: #506567;
  --accent: #157f68;
  --accent-strong: #0d5a49;
  --accent-alt: #bb6a18;
  --accent-alt-soft: rgba(187, 106, 24, 0.1);
  --danger: #b84f4f;
  --shadow: 0 16px 40px rgba(16, 33, 38, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(114, 223, 191, 0.18), transparent 28%),
    radial-gradient(circle at bottom right, rgba(255, 184, 110, 0.15), transparent 22%),
    linear-gradient(180deg, #09131a 0%, var(--bg) 100%);
  color: var(--text);
  font-family: var(--font-body);
  letter-spacing: 0.01em;
  line-height: 1.52;
}

body[data-theme="light"] {
  background:
    radial-gradient(circle at top left, rgba(21, 127, 104, 0.12), transparent 28%),
    radial-gradient(circle at bottom right, rgba(187, 106, 24, 0.1), transparent 22%),
    linear-gradient(180deg, #f5fbf8 0%, var(--bg) 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: 42vw;
  height: 42vw;
  border-radius: 999px;
  pointer-events: none;
  z-index: -1;
  filter: blur(22px);
}

body::before {
  top: 10%;
  right: -12%;
  background: rgba(114, 223, 191, 0.08);
}

body::after {
  bottom: 12%;
  left: -16%;
  background: rgba(255, 184, 110, 0.08);
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

code {
  font-family: Consolas, "Courier New", monospace;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 0.08rem 0.38rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.15rem 1.05rem 8.15rem;
}

.topbar {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: 0.95rem;
  padding: 1rem 1rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(10, 20, 26, 0.92), rgba(10, 20, 26, 0.8));
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(20px);
}

body[data-theme="light"] .topbar {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(250, 253, 252, 0.88));
}

.topbar-copy {
  min-width: 0;
}

.topbar h1,
.hero-card h2,
.view h2,
.card h3,
.exercise-sheet h2 {
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: -0.035em;
  line-height: 1.02;
  overflow-wrap: anywhere;
}

.topbar h1 {
  font-size: clamp(1.7rem, 7vw, 2.45rem);
}

.topbar-summary,
.hero-copy,
.card p,
.queue-item p,
.plan-item p,
.exercise-card p,
.source-card p,
.journey-row p {
  margin: 0;
  line-height: 1.62;
}

.topbar-summary {
  max-width: 46ch;
  margin-top: 0.6rem;
  color: var(--muted);
}

.topbar-actions {
  display: grid;
  gap: var(--space-2);
  justify-items: end;
  min-width: 0;
}

.player-chip {
  min-height: 44px;
  max-width: 100%;
  padding: 0.75rem 0.95rem;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 0.92rem;
  text-align: right;
}

.player-chip strong,
.player-chip span {
  display: block;
}

.player-chip strong {
  font-size: 0.92rem;
}

.player-chip span {
  color: var(--muted);
  font-size: 0.78rem;
}

.eyebrow {
  margin: 0 0 0.38rem;
  color: var(--accent-alt);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.muted {
  color: var(--muted);
}

.views {
  display: block;
}

.view {
  display: none;
  animation: lift-in 240ms ease;
}

.view.active {
  display: block;
}

.card {
  margin-bottom: 1.1rem;
  padding: 1.45rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg-elevated) 100%);
  box-shadow: var(--shadow);
}

.play-hero {
  padding: 1.5rem 1.35rem;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(114, 223, 191, 0.16), transparent 50%),
    linear-gradient(180deg, rgba(255, 184, 110, 0.1), transparent 44%),
    linear-gradient(180deg, var(--surface-strong) 0%, var(--bg-elevated) 100%);
}

.hero-head {
  display: grid;
  gap: 1rem;
}

.level-medal {
  justify-self: start;
  min-width: 118px;
  padding: 0.9rem 1rem;
  border-radius: 22px;
  border: 1px solid rgba(114, 223, 191, 0.26);
  background:
    linear-gradient(135deg, rgba(114, 223, 191, 0.16), rgba(255, 184, 110, 0.14)),
    rgba(255, 255, 255, 0.04);
  color: var(--text);
  text-align: center;
}

.level-medal strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.55rem;
}

.level-medal span {
  display: block;
  margin-top: 0.18rem;
  font-size: 0.84rem;
  color: var(--muted);
}

.hero-copy {
  margin-top: 0.8rem;
  max-width: 58ch;
  color: var(--muted);
  line-height: 1.65;
}

.xp-panel {
  margin-top: 1.15rem;
  padding: 1.05rem;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.xp-row,
.section-heading,
.queue-header,
.exercise-card-header,
.source-card-header,
.journey-row-top,
.bar-label {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
}

.xp-row {
  font-size: 0.92rem;
  color: var(--muted);
}

.progress-track {
  width: 100%;
  height: 11px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.progress-track--hero {
  margin: 0.75rem 0 0.85rem;
}

.progress-fill,
.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-alt) 100%);
}

.hero-actions,
.exercise-actions,
.chip-row,
.pill-row,
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.78rem;
}

.hero-actions {
  margin-top: 1.2rem;
}

.primary-button,
.secondary-button,
.danger-button,
.icon-button,
.text-button,
.mini-button,
.nav-button,
.chip {
  border: 1px solid transparent;
  transition:
    transform 150ms ease,
    background-color 150ms ease,
    border-color 150ms ease,
    opacity 150ms ease,
    box-shadow 150ms ease;
}

.primary-button,
.secondary-button,
.danger-button {
  min-height: 48px;
  padding: 0.94rem 1.14rem;
  border-radius: 999px;
  font-weight: 800;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent) 0%, #4fb8a0 100%);
  color: #041116;
}

.secondary-button {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--line);
  color: var(--text);
}

.danger-button {
  background: rgba(255, 139, 139, 0.1);
  border-color: rgba(255, 139, 139, 0.24);
  color: var(--danger);
}

.icon-button,
.text-button,
.mini-button,
.chip {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line);
  color: var(--text);
}

.icon-button,
.text-button {
  min-height: 44px;
  border-radius: 999px;
  padding: 0.82rem 1rem;
}

.mini-button {
  border-radius: 999px;
  padding: 0.62rem 0.88rem;
  font-size: 0.84rem;
}

.chip {
  border-radius: 999px;
  padding: 0.56rem 0.86rem;
  font-size: 0.84rem;
}

.chip.active,
.nav-button.active {
  background: rgba(114, 223, 191, 0.12);
  border-color: var(--line-strong);
  color: var(--text);
}

.primary-button:hover,
.secondary-button:hover,
.danger-button:hover,
.icon-button:hover,
.text-button:hover,
.mini-button:hover,
.nav-button:hover,
.chip:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.54;
  transform: none;
  box-shadow: none;
}

.primary-button:focus-visible,
.secondary-button:focus-visible,
.danger-button:focus-visible,
.icon-button:focus-visible,
.text-button:focus-visible,
.mini-button:focus-visible,
.nav-button:focus-visible,
.chip:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.badge,
.pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0.42rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 0.82rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-bottom: 1.1rem;
}

.stats-grid--wide {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-card,
.inline-stat,
.milestone-item,
.lane-card,
.queue-item,
.plan-item,
.exercise-card,
.journey-group,
.source-card,
.history-card {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
}

.stat-card {
  padding: 1.1rem;
}

.stat-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.58rem;
}

.stat-card span {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.stats-inline {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.82rem;
  margin: 1rem 0 1.1rem;
}

.inline-stat {
  padding: 0.95rem 1rem;
}

.inline-stat strong {
  display: block;
  font-size: 1.15rem;
  font-family: var(--font-display);
}

.inline-stat span {
  color: var(--muted);
  font-size: 0.82rem;
}

.section-grid {
  display: grid;
  gap: 1.1rem;
}

.section-grid--featured {
  align-items: start;
}

.section-heading {
  margin-bottom: 1.22rem;
}

.section-heading h3 {
  margin: 0;
  font-size: 1.12rem;
}

.section-heading p {
  margin: 0;
}

.session-card {
  display: grid;
  gap: 0.95rem;
}

.stack-list,
.exercise-grid,
.program-grid,
.journey-groups,
.source-list,
.bar-list,
.program-deck,
.milestone-grid {
  display: grid;
  gap: 1.1rem;
}

.exercise-grid--library {
  align-items: start;
}

.queue-item,
.plan-item,
.exercise-card,
.source-card,
.history-card,
.lane-card {
  padding: 1.12rem;
}

.exercise-card,
.queue-item,
.plan-item,
.history-card,
.lane-card {
  align-content: start;
}

.exercise-card-top,
.exercise-card-meta,
.exercise-card-actions {
  display: grid;
}

.exercise-card-top {
  gap: 0.95rem;
}

.exercise-card-meta {
  gap: 0.55rem;
}

.exercise-card-actions {
  padding-top: 0.92rem;
  border-top: 1px solid var(--line);
}

.queue-item h4,
.plan-item h4,
.exercise-card h3,
.source-card h3,
.lane-card h3,
.journey-group h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.25;
}

.queue-header + p,
.exercise-card-header + p,
.source-card-header + p,
.journey-row-top + p,
.history-card .queue-header + p {
  margin-top: 0.86rem;
}

.queue-header > div,
.exercise-card-header > div,
.source-card-header > div,
.journey-row-top > div,
.history-card .queue-header > div {
  display: grid;
  gap: 0.82rem;
  min-width: 0;
}

.queue-header,
.exercise-card-header,
.source-card-header,
.journey-row-top {
  margin-bottom: 0.2rem;
}

.exercise-card-header .pill-row,
.queue-header .pill-row,
.source-card-header .pill-row {
  margin-bottom: 0.1rem;
}

.exercise-card h3,
.queue-item h4,
.plan-item h4,
.source-card h3,
.lane-card h3 {
  display: block;
  margin-top: 0.08rem;
}

.meta-row {
  margin-top: 1rem;
}

.exercise-actions {
  margin-top: 1.22rem;
}

.exercise-card .meta-row,
.queue-item .meta-row,
.lane-card .meta-row,
.history-card .meta-row {
  padding-top: 0.15rem;
}

.exercise-card .exercise-actions,
.queue-item .exercise-actions,
.plan-item .exercise-actions,
.lane-card .hero-actions,
.history-card .exercise-actions {
  padding-top: 0.88rem;
  border-top: 1px solid var(--line);
}

.exercise-card-actions .exercise-actions {
  padding-top: 0;
  border-top: 0;
  margin-top: 0;
}

.exercise-card .exercise-actions .mini-button,
.queue-item .exercise-actions .mini-button,
.plan-item .exercise-actions .mini-button,
.lane-card .hero-actions .mini-button {
  margin-top: 0.05rem;
}

.queue-item,
.plan-item,
.exercise-card,
.source-card,
.history-card,
.lane-card,
.program-card {
  display: grid;
  gap: 0.78rem;
}

.queue-item .pill-row,
.exercise-card .pill-row,
.source-card .pill-row,
.lane-card .pill-row,
.program-card .pill-row {
  gap: 0.55rem;
}

.queue-item .meta-row,
.exercise-card .meta-row,
.lane-card .meta-row,
.history-card .meta-row {
  gap: 0.55rem;
}

.queue-item p,
.plan-item p,
.exercise-card p,
.source-card p,
.history-card p,
.lane-card p,
.program-card p {
  max-width: 62ch;
}

.exercise-card p,
.queue-item p,
.plan-item p,
.source-card p,
.lane-card p,
.history-card p {
  padding-right: 0.1rem;
}

.journey-group {
  overflow: hidden;
}

.journey-group-header {
  padding: 1.1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.journey-group-body {
  display: grid;
}

.journey-row {
  padding: 1.08rem;
  border-bottom: 1px solid var(--line);
}

.journey-row:last-child {
  border-bottom: 0;
}

.program-card,
.lane-card {
  padding: 1.12rem;
  background:
    linear-gradient(135deg, rgba(114, 223, 191, 0.1), transparent 60%),
    rgba(255, 255, 255, 0.04);
}

.program-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.lane-card {
  position: relative;
  overflow: hidden;
}

.lane-card::after {
  content: "";
  position: absolute;
  inset: auto -10% -40% auto;
  width: 120px;
  height: 120px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  filter: blur(8px);
}

.lane-card .hero-actions {
  margin-top: 1rem;
}

.milestone-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.milestone-item {
  padding: 1.05rem;
}

.milestone-item strong {
  display: block;
  margin-bottom: 0.28rem;
}

.milestone-item small {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
}

.milestone-item[data-state="locked"] {
  opacity: 0.82;
}

.milestone-item[data-state="unlocked"] {
  border-color: rgba(114, 223, 191, 0.32);
  background:
    linear-gradient(135deg, rgba(114, 223, 191, 0.14), rgba(255, 184, 110, 0.08)),
    rgba(255, 255, 255, 0.04);
}

.checkin-form,
.diagnostic-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.range-field,
.text-field,
.search-field {
  display: grid;
  gap: 0.58rem;
  min-width: 0;
}

.select-field {
  display: grid;
  gap: 0.58rem;
  min-width: 0;
}

.range-field span,
.text-field span,
.select-field span {
  font-weight: 700;
  line-height: 1.35;
}

.range-field output {
  color: var(--accent);
  font-weight: 800;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

input[type="search"],
select,
textarea {
  width: 100%;
  padding: 1rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  color: var(--text);
}

textarea {
  resize: vertical;
  min-height: 112px;
}

.full-span {
  grid-column: 1 / -1;
}

.diagnostic-intro {
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.diagnostic-questions {
  display: grid;
  gap: 0.95rem;
}

.survey-question {
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.survey-question h4 {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.4;
}

.survey-question p {
  margin-top: 0.6rem;
}

.likert-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
  margin-top: 0.9rem;
}

.likert-option {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
  padding: 0.72rem 0.82rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.likert-option input {
  margin: 0;
  accent-color: var(--accent);
}

.likert-option span {
  font-size: 0.85rem;
  line-height: 1.35;
}

.likert-option:has(input:checked) {
  border-color: var(--line-strong);
  background: rgba(114, 223, 191, 0.1);
}

.sticky-card {
  position: static;
  top: auto;
  z-index: auto;
}

.library-summary {
  color: var(--muted);
}

.bar-item {
  display: grid;
  gap: 0.55rem;
}

.bar-label {
  color: var(--muted);
  font-size: 0.92rem;
}

.bar-track {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.heatmap {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.55rem;
}

.heat-cell {
  aspect-ratio: 1;
  border-radius: 11px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
}

.heat-cell[data-level="1"] {
  background: rgba(114, 223, 191, 0.18);
}

.heat-cell[data-level="2"] {
  background: rgba(114, 223, 191, 0.34);
}

.heat-cell[data-level="3"] {
  background: rgba(114, 223, 191, 0.52);
}

.heat-cell[data-level="4"] {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-alt) 100%);
}

.source-card a,
.linked-source {
  color: var(--accent-strong);
}

.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: 0.8rem;
  transform: translateX(-50%);
  z-index: 30;
  width: min(calc(100% - 1rem), 860px);
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.58rem;
  padding: 0.58rem;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: rgba(8, 17, 22, 0.92);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

body[data-theme="light"] .bottom-nav {
  background: rgba(255, 255, 255, 0.92);
}

.nav-button {
  min-height: 60px;
  padding: 0.75rem 0.48rem;
  border-radius: 18px;
  background: transparent;
  color: var(--muted);
  display: grid;
  gap: 0.18rem;
  justify-items: center;
  align-content: center;
}

.nav-title {
  font-weight: 800;
  font-size: 0.88rem;
}

.nav-caption {
  font-size: 0.68rem;
  text-transform: lowercase;
  opacity: 0.9;
}

.sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 34;
  background: rgba(5, 10, 13, 0.58);
  backdrop-filter: blur(8px);
}

.exercise-sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 35;
  max-height: 92vh;
  overflow: auto;
  padding: 1.1rem 1.1rem calc(1.1rem + env(safe-area-inset-bottom, 0));
  border-radius: 28px 28px 0 0;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(114, 223, 191, 0.08), transparent 22%),
    linear-gradient(180deg, var(--surface-strong) 0%, var(--bg-elevated) 100%);
  box-shadow: 0 -26px 70px rgba(0, 0, 0, 0.32);
  transform: translateY(102%);
  transition: transform 220ms ease;
}

.exercise-sheet.open {
  transform: translateY(0);
}

.sheet-header,
.sheet-actions {
  display: flex;
  justify-content: space-between;
  gap: 0.85rem;
  align-items: center;
}

.sheet-header {
  position: static;
  padding-bottom: 1rem;
  background: linear-gradient(180deg, var(--surface-strong), transparent);
}

.sheet-body {
  display: grid;
  gap: 1.15rem;
  padding-bottom: 1.3rem;
}

.sheet-section h3 {
  margin: 0 0 0.7rem;
}

.sheet-section + .sheet-section {
  padding-top: 0.95rem;
  border-top: 1px solid var(--line);
}

.sheet-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.sheet-list li + li {
  margin-top: 0.5rem;
}

.linked-sources {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.85rem;
}

.linked-source {
  display: block;
  padding: 0.98rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  text-decoration: none;
}

.sheet-actions {
  padding-top: 0.45rem;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.sheet-actions .secondary-button,
.sheet-actions .primary-button {
  flex: 1 1 160px;
}

.linked-source strong {
  display: block;
  margin-bottom: 0.12rem;
  color: var(--text);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 6.9rem;
  transform: translateX(-50%);
  z-index: 40;
  max-width: calc(100% - 2rem);
  padding: 0.95rem 1rem;
  border-radius: 18px;
  border: 1px solid var(--line-strong);
  background: rgba(8, 17, 22, 0.94);
  color: var(--text);
  box-shadow: var(--shadow);
}

body[data-theme="light"] .toast {
  background: rgba(255, 255, 255, 0.95);
}

.noscript {
  margin: 1rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 139, 139, 0.1);
}

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

@media (max-width: 420px) {
  .app-shell {
    padding-inline: 1rem;
  }

  .card,
  .play-hero,
  .queue-item,
  .plan-item,
  .exercise-card,
  .source-card,
  .history-card,
  .lane-card,
  .program-card {
    padding: 1.18rem;
  }

  .milestone-grid {
    grid-template-columns: 1fr;
  }

  .likert-grid {
    grid-template-columns: 1fr;
  }

  .nav-caption {
    display: none;
  }
}

@media (max-width: 390px) {
  .app-shell {
    padding-inline: 0.8rem;
  }

  .topbar {
    display: grid;
    gap: 0.9rem;
    padding: 0.9rem;
  }

  .topbar-actions {
    grid-template-columns: 1fr auto;
    align-items: start;
    justify-items: stretch;
  }

  .player-chip {
    padding: 0.7rem 0.8rem;
    text-align: left;
  }

  .icon-button {
    min-width: 0;
    padding-inline: 0.7rem;
  }

  .card,
  .play-hero,
  .exercise-card,
  .source-card,
  .history-card,
  .program-card,
  .lane-card,
  .session-panel,
  .command-card,
  .reward-card,
  .stack-card {
    padding: 1rem;
  }

  .section-heading {
    display: grid;
    gap: 0.7rem;
  }

  .stats-grid,
  .stats-grid--wide {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
  }

  .stat-card {
    min-height: 6.8rem;
    padding: 1rem 0.9rem;
    gap: 0.7rem;
  }

  .chip-row,
  .pill-row,
  .meta-row,
  .command-card__meta,
  .exercise-card__meta {
    gap: 0.5rem;
  }

  .meta-pill,
  .pill,
  .badge,
  .chip {
    min-height: 1.9rem;
    padding: 0.38rem 0.62rem;
    font-size: 0.76rem;
  }

  .hero-actions,
  .command-card__actions,
  .exercise-card__actions,
  .sheet-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .hero-actions > *,
  .command-card__actions > *,
  .exercise-card__actions > *,
  .sheet-actions > * {
    width: 100%;
  }

  .section-grid,
  .session-grid {
    gap: 0.9rem;
  }

  .session-item,
  .timeline-item,
  .history-card {
    padding: 0.85rem 0.9rem;
  }

  .bottom-nav {
    left: 50%;
    right: auto;
    width: min(calc(100% - 1.4rem), 520px);
    transform: translateX(-50%);
    padding-inline: 0.45rem;
    gap: 0.2rem;
  }

  .nav-button {
    min-width: 0;
    padding-inline: 0.35rem;
  }

  .nav-title {
    font-size: 0.8rem;
  }
}

@media (min-width: 720px) {
  .app-shell {
    padding-inline: 1.35rem;
  }

  .hero-head {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
  }

  .section-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .checkin-form,
  .diagnostic-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .daily-form,
  .quest-form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sheet-workspace-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .exercise-grid,
  .program-grid,
  .program-deck {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stats-grid--wide {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .stats-inline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .likert-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .exercise-sheet {
    left: 50%;
    right: auto;
    width: min(720px, calc(100% - 2rem));
    bottom: 1rem;
    border-radius: 30px;
    transform: translate(-50%, 102%);
  }

  .exercise-sheet.open {
    transform: translate(-50%, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .view,
  .exercise-sheet,
  .primary-button,
  .secondary-button,
  .danger-button,
  .icon-button,
  .text-button,
  .mini-button,
  .nav-button,
  .chip {
    animation: none;
    transition: none;
  }
}

.section-grid--featured {
  align-items: start;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.section-heading > div {
  min-width: 0;
  display: grid;
  gap: 0.45rem;
}

.stack-tight {
  display: grid;
  gap: 0.55rem;
  min-width: 0;
}

.stack-list,
.command-card-stack,
.bar-list,
.source-list {
  display: grid;
  gap: 1rem;
}

.session-grid {
  margin-top: 1.15rem;
}

.session-panel {
  display: grid;
  gap: 0.95rem;
  min-width: 0;
  padding: 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.session-panel .eyebrow {
  margin-bottom: 0;
}

.session-note-field {
  margin-top: 1.35rem;
  margin-bottom: 1rem;
  padding-top: 0.4rem;
}

.session-item {
  display: grid;
  gap: 0.55rem;
  min-width: 0;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
}

.session-item h4,
.session-item p {
  margin: 0;
  overflow-wrap: anywhere;
}

.chapter-strip,
.node-map,
.reward-grid {
  display: grid;
  gap: 0.95rem;
}

.chapter-strip {
  margin: 0 0 1.2rem;
}

.chapter-chip,
.node-card,
.stat-chip,
.stack-card,
.companion-card,
.reward-card {
  min-width: 0;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.045);
}

.chapter-chip {
  display: grid;
  gap: 0.35rem;
}

.chapter-chip span,
.node-index,
.stat-chip span,
.timeline-date {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.chapter-chip strong,
.node-card strong,
.reward-card h4,
.stack-card h4,
.timeline-item h4,
.command-card h4,
.archive-card h4 {
  margin: 0;
  line-height: 1.18;
  overflow-wrap: anywhere;
}

.chapter-chip.is-active,
.node-card.is-active {
  border-color: rgba(114, 223, 191, 0.55);
  background: rgba(114, 223, 191, 0.11);
}

.chapter-chip.is-complete,
.node-card.is-complete {
  border-color: rgba(255, 184, 110, 0.45);
}

.node-card.is-locked,
.stack-card--locked,
.archive-card--locked {
  opacity: 0.76;
}

.command-card,
.archive-card,
.exercise-card {
  display: grid;
  gap: 1rem;
}

.command-card__header,
.command-card__summary,
.command-card__meta,
.command-card__actions,
.exercise-card__header,
.exercise-card__summary,
.exercise-card__meta,
.exercise-card__actions {
  min-width: 0;
}

.command-card__summary,
.exercise-card__summary {
  display: grid;
  gap: 0.8rem;
}

.command-card__meta,
.exercise-card__meta,
.meta-row,
.pill-row,
.hero-actions,
.command-card__actions,
.exercise-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.command-card__actions,
.exercise-card__actions {
  padding-top: 0.35rem;
}

.meta-pill,
.pill,
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  max-width: 100%;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  overflow-wrap: anywhere;
  word-break: break-word;
  background: rgba(255, 255, 255, 0.05);
}

.stats-inline {
  display: grid;
  gap: 0.85rem;
  margin: 1rem 0 1.2rem;
}

.stat-chip {
  display: grid;
  gap: 0.3rem;
}

.stat-chip strong,
.stat-value {
  font-size: 1.1rem;
}

.stats-grid {
  align-items: start;
}

.stat-card {
  display: grid;
  align-content: start;
  gap: 0.9rem;
  min-height: 7.5rem;
  padding: 1.25rem 1.15rem 1.25rem;
}

.stat-card .stat-label,
.stat-card span {
  margin: 0;
  line-height: 1.35;
  color: var(--muted);
}

.stat-card .stat-value,
.stat-card strong {
  margin: 0;
  line-height: 1.05;
}

#top-stats {
  margin-top: 1rem;
}

#insight-stats,
#source-summary {
  margin-top: 1.35rem;
}

#archive-summary,
#diagnostic-summary,
.card > .muted {
  margin-top: 0.55rem;
}

.card > h2 + .stats-grid,
.card > h2 + .program-grid,
.card > h2 + .bar-list {
  margin-top: 1.3rem;
}

.card > p.muted + .stats-grid {
  margin-top: 1.2rem;
}

#program-bars,
#diagnostic-history,
#achievement-grid,
#sources-list,
#library-results {
  margin-top: 0.35rem;
}

.companion-panel {
  display: grid;
  gap: 1rem;
}

.companion-card {
  display: grid;
  gap: 0.85rem;
}

.companion-copy {
  font-size: 1rem;
  line-height: 1.72;
}

.mission-card {
  background:
    linear-gradient(135deg, rgba(114, 223, 191, 0.12), transparent 55%),
    linear-gradient(180deg, rgba(255, 184, 110, 0.08), transparent 45%),
    linear-gradient(180deg, var(--surface) 0%, var(--bg-elevated) 100%);
}

.mission-brief {
  display: grid;
  gap: 0.95rem;
  margin-top: 0.2rem;
}

.mission-step {
  display: grid;
  gap: 0.45rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.mission-step--primary {
  border-color: rgba(114, 223, 191, 0.35);
  background: rgba(114, 223, 191, 0.08);
}

.mission-step h4,
.mission-step p {
  margin: 0;
  overflow-wrap: anywhere;
}

.progress-track--chapter {
  margin: 0 0 1rem;
  height: 12px;
}

.topbar,
.card,
.exercise-card,
.source-card,
.history-card,
.program-card,
.session-panel,
.diagnostic-card,
.command-card,
.reward-card,
.stack-card,
.timeline-item,
.mission-step {
  overflow: hidden;
}

.topbar-copy,
.card,
.session-panel,
.diagnostic-card,
.command-card,
.exercise-card,
.source-card,
.history-card,
.program-card,
.reward-card,
.stack-card,
.timeline-item {
  min-width: 0;
}

.section-heading,
.sheet-header,
.sheet-actions {
  flex-wrap: wrap;
}

.section-heading > .badge {
  flex-shrink: 0;
}

.nav-button {
  overflow: hidden;
}

.nav-title,
.nav-caption,
.badge,
.pill,
.meta-pill,
.chip,
.player-chip strong,
.player-chip span,
.stat-label,
.stat-value,
.command-card h4,
.exercise-card h4,
.exercise-card h3,
.source-card h3,
.history-card h4,
.session-item h4,
.session-item p,
.mission-step h4,
.mission-step p,
.companion-copy,
.card p {
  overflow-wrap: anywhere;
}

#session-prep-summary,
#archive-summary,
#diagnostic-summary,
#source-summary,
#insight-stats {
  min-width: 0;
}

#top-stats,
#insight-stats,
#source-summary,
#session-prep-overview {
  margin-top: 1rem;
}

@media (max-width: 720px) {
  .play-hero,
  .mission-card,
  .section-grid > .card,
  .view > .card {
    margin-bottom: 1rem;
  }

  .hero-actions,
  .command-card__actions,
  .exercise-card__actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hero-actions > *,
  .command-card__actions > *,
  .exercise-card__actions > * {
    width: 100%;
  }

  .bottom-nav {
    width: min(calc(100% - 1rem), 520px);
  }
}

.timeline-item {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
  border-left: 3px solid rgba(114, 223, 191, 0.4);
  border-radius: 0 18px 18px 0;
  background: rgba(255, 255, 255, 0.04);
}

.timeline-item p,
.reward-card p,
.stack-card p {
  margin: 0;
}

.archive-state-pill {
  text-transform: capitalize;
}

.exercise-grid--library {
  align-items: start;
}

.diagnostic-questions {
  display: grid;
  gap: 1rem;
}

.diagnostic-card {
  display: grid;
  gap: 0.7rem;
  min-width: 0;
  margin: 0;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.diagnostic-card h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.5;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.daily-form,
.quest-form-grid {
  display: grid;
  gap: 0.95rem;
}

.quest-response-form {
  display: grid;
  gap: 0.95rem;
  padding-top: 0.15rem;
}

.sheet-workspace-form,
.sheet-workspace-fields,
.sheet-workspace-meta {
  display: grid;
  gap: 0.95rem;
}

.sheet-workspace-form {
  margin-top: 0.35rem;
}

.mission-brief + .stats-grid,
.session-grid + .text-field {
  margin-top: 1rem;
}

.likert-grid {
  gap: 0.75rem;
  margin-top: 0.85rem;
}

.likert-option {
  min-width: 0;
  align-items: stretch;
}

.likert-option span {
  min-height: 4.25rem;
  height: 100%;
  padding: 0.85rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.node-map--full .node-card {
  min-height: 6rem;
}

.heatmap-cell {
  aspect-ratio: 1;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid transparent;
}

.heatmap-cell.is-active {
  background: rgba(114, 223, 191, 0.36);
  border-color: rgba(114, 223, 191, 0.35);
}

.source-list {
  margin-bottom: 1.25rem;
}

.source-card {
  text-decoration: none;
}

.source-card h3 {
  overflow-wrap: anywhere;
}

.program-grid,
.milestone-grid,
.exercise-grid,
.reward-grid,
.node-map,
.chapter-strip,
.bar-list {
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .chapter-strip,
  .reward-grid,
  .node-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .chapter-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .bar-list,
  .source-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}