:root {
  color-scheme: light;
  --page: #f7f4ed;
  --surface: #fffefa;
  --surface-soft: #eef2ec;
  --ink: #22352d;
  --muted: #52635b;
  --line: #d6dfd7;
  --primary: #476f5e;
  --primary-hover: #365a4b;
  --primary-ink: #ffffff;
  --peach: #f1c2a8;
  --peach-soft: #fbede4;
  --green-soft: #e6eee8;
  --danger: #8b3429;
  --danger-soft: #fae9e5;
  --shadow: 0 16px 42px rgba(36, 64, 49, 0.08);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #18241f;
    --surface: #22332b;
    --surface-soft: #2a3b32;
    --ink: #eff5ef;
    --muted: #c2d0c5;
    --line: #506259;
    --primary: #a5cbb4;
    --primary-hover: #bbdac6;
    --primary-ink: #18241f;
    --peach: #e5ae90;
    --peach-soft: #49372f;
    --green-soft: #2e4338;
    --danger: #ffb9a9;
    --danger-soft: #472e2b;
    --shadow: 0 16px 42px rgba(0, 0, 0, 0.2);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--page);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 0%, rgba(241, 194, 168, 0.22), transparent 26rem),
    var(--page);
}

button,
input {
  font: inherit;
}

button {
  min-height: 48px;
  border: 0;
  border-radius: 14px;
  padding: 0.8rem 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 120ms ease, transform 120ms ease;
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--peach);
  outline-offset: 3px;
}

#app {
  width: 100%;
  padding: max(0.8rem, env(safe-area-inset-top)) 1rem max(2rem, env(safe-area-inset-bottom));
}

.app-shell {
  width: min(100%, 920px);
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 0 1.25rem;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 15px;
  color: var(--primary-ink);
  background: var(--primary);
  box-shadow: var(--shadow);
}

.brand-mark svg {
  width: 27px;
  height: 27px;
}

.brand-name {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.brand-kicker {
  margin: 0.12rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

main {
  display: grid;
  gap: 1rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: clamp(1.1rem, 4vw, 2rem);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 6vw, 3rem);
}

.hero::after {
  position: absolute;
  top: -2.6rem;
  right: -2rem;
  width: 8rem;
  height: 8rem;
  border: 1px solid rgba(71, 111, 94, 0.16);
  border-radius: 50%;
  content: "";
}

.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 19ch;
  margin: 0;
  font-size: clamp(1.85rem, 7vw, 3.15rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

h2 {
  margin: 0;
  font-size: clamp(1.3rem, 4vw, 1.75rem);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

h3 {
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.3;
}

p {
  line-height: 1.55;
}

.hero-copy {
  max-width: 54ch;
  margin: 1rem 0 1.35rem;
  color: var(--muted);
  font-size: 1.02rem;
}

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

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

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

.button-secondary {
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--surface);
}

.button-quiet {
  min-height: 44px;
  padding: 0.65rem 0.8rem;
  color: var(--muted);
  background: transparent;
}

.button-danger {
  color: var(--danger);
  background: var(--danger-soft);
}

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

.bonus-card,
.info-card,
.schedule-card {
  display: grid;
  align-content: start;
  gap: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 19px;
  padding: 1rem;
  background: var(--surface);
}

.bonus-card {
  min-height: 176px;
}

.bonus-card p,
.info-card p,
.schedule-card p {
  margin: 0;
  color: var(--muted);
}

.bonus-icon {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 13px;
  color: var(--ink);
  background: var(--peach-soft);
  font-size: 1.15rem;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0 0 0.9rem;
}

.section-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.stack {
  display: grid;
  gap: 1rem;
}

.form-section {
  display: grid;
  gap: 1rem;
}

.form-section + .form-section {
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.form-section > h2 {
  font-size: 1.15rem;
}

.field-grid {
  display: grid;
  gap: 0.9rem;
}

.field {
  display: grid;
  gap: 0.4rem;
  min-width: 0;
}

label,
.field-label {
  font-size: 0.92rem;
  font-weight: 700;
}

input[type="text"] {
  width: 100%;
  min-height: 50px;
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 0.75rem 0.85rem;
  color: var(--ink);
  background: var(--surface);
}

input::placeholder {
  color: var(--muted);
  opacity: 0.75;
}

.time-input {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.07em;
}

.field-help,
.form-note,
.privacy-note,
.scope-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.inline-error {
  min-height: 1.1rem;
  color: var(--danger);
  font-size: 0.82rem;
  line-height: 1.35;
}

.field-error input {
  border-color: var(--danger);
}

.checkbox-row,
.radio-row {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  min-height: 44px;
  padding: 0.55rem 0;
  cursor: pointer;
}

.checkbox-row input,
.radio-row input {
  width: 21px;
  height: 21px;
  flex: 0 0 auto;
  margin: 0.05rem 0 0;
  accent-color: var(--primary);
}

.availability-box {
  display: grid;
  gap: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  background: var(--surface-soft);
}

.availability-box legend {
  max-width: 100%;
  padding: 0 0.4rem;
  font-weight: 800;
}

.availability-times {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.7rem;
}

.turn-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}

.option-card {
  display: grid;
  min-height: 58px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  background: var(--surface);
  cursor: pointer;
  font-weight: 700;
}

.option-card:has(input:checked) {
  border-color: var(--primary);
  box-shadow: inset 0 0 0 1px var(--primary);
  background: var(--green-soft);
}

.option-card input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.radio-group {
  display: grid;
  gap: 0.25rem;
  border: 0;
  margin: 0;
  padding: 0;
}

.radio-group legend {
  margin-bottom: 0.35rem;
  font-size: 0.92rem;
  font-weight: 700;
}

.form-alert,
.state-card {
  border-radius: 16px;
  padding: 0.9rem 1rem;
  color: var(--danger);
  background: var(--danger-soft);
  line-height: 1.45;
}

.form-alert:empty {
  display: none;
}

.state-card {
  color: var(--ink);
  background: var(--surface-soft);
}

.state-card p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.result-window {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-weight: 650;
}

.result-intro {
  max-width: 58ch;
  margin: 0.8rem 0 0;
  color: var(--muted);
}

.blocks-list {
  display: grid;
  gap: 0.75rem;
}

.block-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem 0.8rem;
  border: 1px solid var(--line);
  border-left: 5px solid var(--primary);
  border-radius: 16px;
  padding: 0.95rem 1rem;
  background: var(--green-soft);
}

.block-card[data-adult="1"] {
  border-left-color: #c27d55;
  background: var(--peach-soft);
}

.block-title {
  margin: 0;
  font-weight: 800;
}

.block-time {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.block-duration {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: right;
  white-space: nowrap;
}

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

.total-card {
  border-radius: 15px;
  padding: 0.9rem;
  background: var(--surface-soft);
}

.total-card p {
  margin: 0;
}

.total-card strong {
  display: block;
  margin-top: 0.25rem;
  font-size: 1.12rem;
  font-variant-numeric: tabular-nums;
}

.swap-list {
  display: grid;
  gap: 0.7rem;
}

.swap-control {
  display: grid;
  gap: 0.45rem;
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: 0.9rem;
  background: var(--surface);
}

.swap-control label {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
}

.swap-time {
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

.swap-control input[type="range"] {
  width: 100%;
  min-height: 34px;
  accent-color: var(--primary);
  touch-action: pan-y;
}

.range-bounds {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.76rem;
  font-variant-numeric: tabular-nums;
}

.explanation {
  margin: 0;
  padding: 1rem;
  border-radius: 16px;
  color: var(--ink);
  background: var(--surface-soft);
  line-height: 1.5;
}

.result-actions {
  display: grid;
  gap: 0.65rem;
}

.comparison-list {
  display: grid;
  gap: 0.85rem;
}

.comparison-card {
  display: grid;
  align-content: start;
  gap: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  background: var(--surface);
}

.comparison-card h3 {
  font-size: 1.1rem;
}

.comparison-card .blocks-list {
  gap: 0.5rem;
}

.comparison-card .block-card {
  padding: 0.75rem;
}

.comparison-difference {
  margin: 0;
  padding: 0.7rem;
  border-radius: 12px;
  background: var(--surface-soft);
  font-weight: 700;
}

.site-footer {
  display: grid;
  gap: 0.7rem;
  padding: 0.35rem 0 0;
}

.site-footer .button-quiet {
  justify-self: start;
}

.toast {
  position: fixed;
  z-index: 10;
  right: 1rem;
  bottom: max(1rem, env(safe-area-inset-bottom));
  left: 1rem;
  width: min(100% - 2rem, 680px);
  margin: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.85rem 1rem;
  color: var(--ink);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.toast[hidden] {
  display: none;
}

.toast-error {
  border-color: var(--danger);
  color: var(--danger);
  background: var(--danger-soft);
}

.copy-fallback {
  display: grid;
  gap: 0.5rem;
}

.copy-fallback textarea {
  min-height: 170px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem;
  color: var(--ink);
  background: var(--surface);
}

@media (min-width: 680px) {
  #app {
    padding-right: 1.5rem;
    padding-left: 1.5rem;
  }

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

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

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

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