:root {
  color-scheme: light;
  --bg: #f3f7f5;
  --surface: #ffffff;
  --surface-soft: #e7f2ee;
  --surface-strong: #d8ebe4;
  --text: #17352f;
  --muted: #526b65;
  --border: #b9cdc6;
  --primary: #0b6b5b;
  --primary-strong: #075044;
  --primary-text: #ffffff;
  --danger: #9d2b2b;
  --danger-soft: #fbe8e8;
  --warning: #75560b;
  --warning-soft: #fff5d8;
  --shadow: 0 14px 40px rgb(27 66 56 / 0.10);
  --radius: 18px;
  --radius-small: 12px;
  --nav-height: 76px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0f1816;
    --surface: #17231f;
    --surface-soft: #1d302a;
    --surface-strong: #27443a;
    --text: #f0f7f4;
    --muted: #b2c7c0;
    --border: #3f5a51;
    --primary: #68c9b4;
    --primary-strong: #8dd9c8;
    --primary-text: #0b211c;
    --danger: #ffabab;
    --danger-soft: #3c2020;
    --warning: #f4d47f;
    --warning-soft: #352d18;
    --shadow: 0 18px 48px rgb(0 0 0 / 0.28);
  }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.55;
  text-align: start;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a,
input,
textarea {
  touch-action: manipulation;
}

a {
  color: var(--primary-strong);
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  inset-block-start: 8px;
  inset-inline-start: 8px;
  z-index: 1000;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-shell {
  width: min(100%, 1120px);
  min-height: 100dvh;
  margin-inline: auto;
  padding-block-end: calc(var(--nav-height) + env(safe-area-inset-bottom) + 28px);
}

.topbar {
  position: sticky;
  inset-block-start: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  padding: 10px 18px;
  border-block-end: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px;
  background: var(--primary);
  color: var(--primary-text);
  font-size: 1.25rem;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1.05rem;
}

.brand small {
  color: var(--muted);
  font-size: 0.78rem;
}

.text-button,
.danger-button {
  min-height: 44px;
  padding: 8px 12px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--primary-strong);
  font-weight: 700;
}

.text-button:hover {
  background: var(--surface-soft);
}

main {
  padding: 22px 16px 40px;
}

.view {
  animation: view-in 180ms ease-out both;
}

.page-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-block-end: 22px;
}

.page-heading h1,
.page-heading h2,
.dialog-heading h2,
.panel h2,
.panel h3 {
  margin: 0;
  line-height: 1.2;
}

.page-heading h1 {
  margin-block-start: 4px;
  font-size: clamp(1.8rem, 5vw, 2.75rem);
  letter-spacing: -0.035em;
}

.page-heading p:not(.section-label) {
  max-width: 56ch;
  margin: 8px 0 0;
  color: var(--muted);
}

.section-label {
  margin: 0;
  color: var(--primary-strong);
  font-size: 0.82rem;
  font-weight: 800;
}

.date-chip {
  flex: 0 0 auto;
  padding: 10px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.88rem;
}

.dashboard-grid {
  display: grid;
  gap: 16px;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel-body {
  padding: 20px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-block-end: 16px;
}

.hero-panel {
  overflow: hidden;
  background:
    radial-gradient(circle at 90% 0%, color-mix(in srgb, var(--primary) 18%, transparent), transparent 38%),
    var(--surface);
}

.hero-panel .panel-body {
  display: grid;
  gap: 20px;
  padding: 24px;
}

.hero-copy h2 {
  max-width: 15ch;
  font-size: clamp(1.65rem, 5vw, 2.5rem);
}

.hero-copy p {
  max-width: 58ch;
  margin: 10px 0 0;
  color: var(--muted);
}

.phase-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.metric {
  padding: 14px;
  border-radius: var(--radius-small);
  background: var(--surface-soft);
}

.metric strong,
.metric span {
  display: block;
}

.metric strong {
  font-size: 1.25rem;
  font-variant-numeric: tabular-nums;
}

.metric span {
  margin-block-start: 2px;
  color: var(--muted);
  font-size: 0.82rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button:active {
  transform: scale(0.98);
}

.button.primary {
  background: var(--primary);
  color: var(--primary-text);
}

.button.primary:hover {
  background: var(--primary-strong);
}

.button.secondary {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
}

.button.secondary:hover {
  background: var(--surface-soft);
}

.button.small {
  min-height: 42px;
  padding: 8px 13px;
}

.full-width {
  width: 100%;
}

.task-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.task-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
}

.task-item:has(input:checked) {
  border-color: var(--primary);
  background: var(--surface-soft);
}

.task-item input {
  width: 24px;
  height: 24px;
  margin: 2px 0 0;
  accent-color: var(--primary);
}

.task-item label {
  cursor: pointer;
}

.task-item strong,
.task-item span {
  display: block;
}

.task-item span {
  margin-block-start: 3px;
  color: var(--muted);
  font-size: 0.9rem;
}

.progress-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 14px;
  align-items: center;
}

.progress-row progress {
  grid-column: 1 / -1;
}

progress {
  width: 100%;
  height: 10px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: var(--surface-strong);
}

progress::-webkit-progress-bar {
  background: var(--surface-strong);
}

progress::-webkit-progress-value {
  border-radius: 999px;
  background: var(--primary);
}

progress::-moz-progress-bar {
  border-radius: 999px;
  background: var(--primary);
}

.checkin-result,
.safety-alert,
.gentle-note {
  padding: 16px;
  border-radius: var(--radius-small);
}

.checkin-result {
  border: 1px solid var(--border);
  background: var(--surface-soft);
}

.safety-alert {
  border: 1px solid var(--danger);
  background: var(--danger-soft);
  color: var(--text);
}

.safety-alert strong,
.gentle-note strong,
.checkin-result strong {
  display: block;
  margin-block-end: 4px;
}

.gentle-note {
  border: 1px solid color-mix(in srgb, var(--warning) 45%, var(--border));
  background: var(--warning-soft);
}

.education-preview {
  display: grid;
  gap: 12px;
}

.education-preview blockquote {
  margin: 0;
  padding-inline-start: 14px;
  border-inline-start: 4px solid var(--primary);
  font-size: 1.12rem;
  font-weight: 700;
}

.education-preview p {
  margin: 0;
  color: var(--muted);
}

.coach-thread {
  display: grid;
  gap: 10px;
  max-height: 300px;
  margin-block-end: 14px;
  overflow-y: auto;
  scroll-padding-block: 12px;
}

.message {
  width: fit-content;
  max-width: 88%;
  padding: 11px 13px;
  border-radius: 14px;
}

.message.coach {
  justify-self: start;
  background: var(--surface-soft);
}

.message.user {
  justify-self: end;
  background: var(--primary);
  color: var(--primary-text);
}

.coach-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.coach-form input {
  min-width: 0;
}

.quick-prompts {
  display: flex;
  gap: 8px;
  margin-block: 0 12px;
  overflow-x: auto;
  padding-block-end: 4px;
}

.quick-prompts button {
  flex: 0 0 auto;
  min-height: 42px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
}

.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-block-end: 18px;
  padding: 5px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-soft);
}

.tabs button {
  min-height: 44px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font-weight: 800;
}

.tabs button[aria-pressed="true"] {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 4px 14px rgb(20 70 57 / 0.10);
}

.timeline {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 14px;
  padding-block: 16px;
  border-block-end: 1px solid var(--border);
}

.timeline li:last-child {
  border-block-end: 0;
}

.timeline time {
  color: var(--primary-strong);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.timeline strong,
.timeline span {
  display: block;
}

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

.week-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(96px, 1fr));
  gap: 10px;
  overflow-x: auto;
  padding-block-end: 8px;
}

.day-card {
  min-height: 148px;
  padding: 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
}

.day-card.today {
  border: 2px solid var(--primary);
}

.day-card strong,
.day-card span {
  display: block;
}

.day-card span {
  margin-block-start: 8px;
  color: var(--muted);
  font-size: 0.86rem;
}

.phase-grid,
.learning-grid,
.stats-grid {
  display: grid;
  gap: 12px;
}

.phase-card,
.lesson-card,
.stat-card {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
}

.phase-card.current {
  border: 2px solid var(--primary);
  background: var(--surface-soft);
}

.phase-card h3,
.lesson-card h2,
.stat-card strong {
  margin: 0;
}

.phase-card p,
.lesson-card p,
.stat-card span {
  color: var(--muted);
}

.phase-card ul {
  margin: 10px 0 0;
  padding-inline-start: 20px;
}

.lesson-card {
  display: grid;
  gap: 12px;
}

.lesson-card p {
  margin: 0;
}

.source-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-inline-start: 20px;
}

.stat-card strong,
.stat-card span {
  display: block;
}

.stat-card strong {
  font-size: 1.75rem;
  font-variant-numeric: tabular-nums;
}

.history-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.history-list li {
  display: grid;
  grid-template-columns: 88px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px 0;
  border-block-end: 1px solid var(--border);
}

.history-list li:last-child {
  border-block-end: 0;
}

.history-list span {
  color: var(--muted);
}

.bottom-nav {
  position: fixed;
  inset-block-end: 0;
  inset-inline: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  min-height: var(--nav-height);
  padding: 8px max(12px, env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  border-block-start: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(16px);
}

.bottom-nav a {
  display: grid;
  min-height: 52px;
  place-items: center;
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
  text-decoration: none;
}

.bottom-nav a[aria-current="page"] {
  background: var(--surface-soft);
  color: var(--primary-strong);
}

dialog {
  width: min(92vw, 560px);
  max-height: min(88dvh, 760px);
  padding: 0;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgb(8 20 17 / 0.58);
  backdrop-filter: blur(3px);
}

dialog form {
  padding: 22px;
}

.dialog-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  margin-block-end: 22px;
}

.field {
  margin-block-end: 20px;
}

.field > label,
.field legend {
  display: block;
  margin-block-end: 7px;
  color: var(--text);
  font-weight: 800;
}

fieldset.field {
  padding: 0;
  border: 0;
}

input[type="text"],
input[type="date"],
input[type="time"],
textarea,
.coach-form input {
  width: 100%;
  min-height: 48px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
}

textarea {
  min-height: 88px;
  resize: vertical;
}

.hint,
.optional {
  color: var(--muted);
  font-size: 0.86rem;
}

.hint {
  margin: 6px 0 0;
}

.range-row {
  display: grid;
  grid-template-columns: 1fr 92px;
  gap: 14px;
  align-items: center;
}

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

output {
  color: var(--primary-strong);
  font-weight: 800;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.choice-group {
  display: grid;
  gap: 8px;
}

.choice-group legend,
.choice-group .hint {
  grid-column: 1 / -1;
}

.choice-group label {
  display: flex;
  align-items: center;
  min-height: 48px;
  gap: 9px;
  padding: 8px 11px;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
}

.choice-group label:has(input:checked) {
  border-color: var(--primary);
  background: var(--surface-soft);
}

.choice-group input {
  width: 20px;
  height: 20px;
  accent-color: var(--primary);
}

.dialog-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.danger-button {
  width: 100%;
  margin-block-start: 24px;
  color: var(--danger);
}

.toast {
  position: fixed;
  inset-inline: 16px;
  inset-block-end: calc(var(--nav-height) + env(safe-area-inset-bottom) + 16px);
  z-index: 80;
  width: min(calc(100% - 32px), 520px);
  margin-inline: auto;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--text);
  color: var(--bg);
  box-shadow: var(--shadow);
}

.sr-live {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

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

@media (min-width: 760px) {
  main {
    padding: 36px 28px 56px;
  }

  .hero-panel .panel-body {
    grid-template-columns: minmax(0, 1.4fr) minmax(240px, 0.6fr);
    align-items: center;
    padding: 30px;
  }

  .dashboard-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  }

  .dashboard-grid .hero-panel {
    grid-column: 1 / -1;
  }

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

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

  .bottom-nav {
    inset-inline: 50%;
    width: min(560px, calc(100% - 32px));
    min-height: 66px;
    margin-inline-start: min(-280px, calc(-50% + 16px));
    margin-block-end: 14px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
  }

  .app-shell {
    padding-block-end: 110px;
  }
}

@media (min-width: 1024px) {
  .topbar {
    padding-inline: 28px;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .topbar,
  .bottom-nav,
  dialog::backdrop {
    backdrop-filter: none;
  }
}