* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: radial-gradient(120% 50% at 50% -10%, color-mix(in srgb, var(--text-primary) 7%, var(--bg-app)) 0%, var(--bg-app) 60%) var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  align-items: center;
  -webkit-text-size-adjust: 100%;
}

html {
  height: 100%;
}

body {
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.app-header {
  flex: 0 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-sm);
  text-align: center;
}

.app-logo {
  display: block;
  width: 40px;
  height: 40px;
  margin: 0 auto var(--space-xs);
  border-radius: var(--radius-sm);
}

.app-header h1 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(180deg, var(--text-primary), color-mix(in srgb, var(--text-primary) 65%, var(--bg-app)));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.brand-tagline {
  margin: 4px 0 0;
  color: var(--text-secondary);
  font-size: 0.6rem;
  font-weight: 400;
}

.today-label {
  margin: 6px 0 0;
  color: var(--text-secondary);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.app-main {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-sm) var(--space-md) calc(var(--tap-min) + 48px + env(safe-area-inset-bottom));
  align-items: center;
  margin: auto 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.loading {
  text-align: center;
  color: var(--text-secondary);
  padding: 40px 0;
}

/* ---------- category card ---------- */

.category-card {
  position: relative;
  flex-shrink: 0;
  overflow: hidden;
  background-color: var(--bg-surface);
  background-image: linear-gradient(160deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0) 45%);
  box-shadow: var(--shadow-card);
  border: 2px solid var(--border-hairline);
  max-width: 480px;
  width: 100%;
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: background-color var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard);
}

.category-card.in-progress {
  border-color: var(--cat-accent);
  background-color: color-mix(in srgb, var(--cat-accent) 9%, var(--bg-surface));
}

.category-card.complete {
  border-color: var(--cat-accent);
  background-color: color-mix(in srgb, var(--cat-accent) 18%, var(--bg-surface));
}

.category-card.skipped {
  opacity: 0.55;
}

@keyframes card-glow {
  0% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--cat-accent) 0%, transparent);
  }
  45% {
    box-shadow: 0 0 22px 4px color-mix(in srgb, var(--cat-accent) 55%, transparent);
  }
  100% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--cat-accent) 0%, transparent);
  }
}

.category-card.just-completed {
  animation: card-glow var(--duration-base) var(--ease-standard);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.category-emoji {
  font-size: 1.2rem;
  line-height: 1;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--cat-accent) 14%, transparent);
  opacity: 0.6;
  transition: opacity var(--duration-base) var(--ease-standard),
    background-color var(--duration-base) var(--ease-standard);
}

.category-card.in-progress .category-emoji,
.category-card.complete .category-emoji {
  opacity: 1;
  background: color-mix(in srgb, var(--cat-accent) 24%, transparent);
}

@keyframes emoji-pop {
  0% {
    transform: scale(1);
  }
  45% {
    transform: scale(1.35);
  }
  100% {
    transform: scale(1);
  }
}

.category-card.just-completed .category-emoji {
  animation: emoji-pop calc(var(--duration-base) * 1.3) var(--ease-spring);
}

.category-name {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  flex: 1;
}

.category-count {
  color: var(--cat-accent);
  font-size: 0.9rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.complete-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--cat-accent);
  color: var(--on-accent);
  font-size: 0.85rem;
  font-weight: 800;
  box-shadow: 0 2px 10px color-mix(in srgb, var(--cat-accent) 55%, transparent);
  opacity: 0;
  transform: scale(0);
  transition: opacity var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-spring);
}

.category-card.complete .complete-badge {
  opacity: 1;
  transform: scale(1);
}

.category-progress-track {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: transparent;
}

.category-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--cat-accent);
  box-shadow: 0 0 8px var(--cat-accent);
  transition: width var(--duration-base) var(--ease-standard);
}

/* ---------- level selector ---------- */

.level-selector {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin-top: var(--space-md);
  padding: 4px;
  background: var(--bg-surface-raised);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-track);
}

.level-slider {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  width: calc((100% - 8px) / 3);
  background: var(--cat-accent);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-pill);
  transition: transform var(--duration-base) var(--ease-standard);
  z-index: 0;
}

.level-selector[data-active="2"] .level-slider {
  transform: translateX(calc(100% + 4px));
}

.level-selector[data-active="3"] .level-slider {
  transform: translateX(calc(200% + 8px));
}

.level-btn {
  position: relative;
  z-index: 1;
  min-height: var(--tap-min);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: color var(--duration-base) var(--ease-standard);
}

.level-btn.active {
  color: var(--on-accent);
}

.skip-btn {
  display: block;
  margin: var(--space-sm) auto 0;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: underline;
  padding: var(--space-xs) var(--space-sm);
  min-height: var(--tap-min);
  cursor: pointer;
}

.skipped-label {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: var(--space-xs);
}

/* ---------- checklist ---------- */

.checklist {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.check-row label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: var(--tap-min);
  padding: var(--space-sm);
  background: var(--bg-surface-raised);
  border-radius: var(--radius-sm);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03) inset;
  cursor: pointer;
  transition: opacity var(--duration-base) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard);
}

.check-row.checked label {
  box-shadow: inset 3px 0 0 var(--cat-accent), 0 1px 0 rgba(255, 255, 255, 0.03) inset;
}

.check-row input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  display: grid;
  place-content: center;
  border-radius: 50%;
  border: 2px solid var(--text-secondary);
  background: transparent;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard);
}

.check-row input[type="checkbox"]::after {
  content: "";
  width: 6px;
  height: 11px;
  margin-top: -2px;
  border: solid var(--on-accent);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: transform var(--duration-fast) var(--ease-spring);
}

.check-row input[type="checkbox"]:checked {
  background: var(--cat-accent);
  border-color: var(--cat-accent);
}

.check-row input[type="checkbox"]:checked::after {
  transform: rotate(45deg) scale(1);
}

@keyframes checkbox-pop {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(1.18);
  }
  100% {
    transform: scale(1);
  }
}

.check-row.just-checked input[type="checkbox"] {
  animation: checkbox-pop var(--duration-base) var(--ease-spring);
}

.check-row span {
  font-size: 1rem;
}

.check-row.checked label {
  opacity: 0.75;
}

.check-row.checked span {
  text-decoration: line-through;
}

/* ---------- share button ---------- */

.share-btn {
  position: fixed;
  left: var(--space-md);
  right: var(--space-md);
  bottom: calc(var(--space-md) + env(safe-area-inset-bottom));
  max-width: 480px;
  margin: 0 auto;
  min-height: var(--tap-min);
  border: none;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, #ffffff, var(--cta-bg));
  color: var(--cta-text);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.06),
    0 1px 0 rgba(255, 255, 255, 0.5) inset;
  cursor: pointer;
  opacity: 1;
  transform: translateY(10px) scale(0.94);
  transition: opacity var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-spring);
  z-index: 2;
}

.share-btn:disabled {
  opacity: 0.35;
  pointer-events: none;
}

/* ---------- toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--tap-min) + 32px + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(0);
  background: var(--toast-success-bg);
  color: var(--on-accent);
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 700;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.08) inset;
  transition: opacity var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-spring);
  z-index: 3;
  pointer-events: none;
}

.toast.hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(56px);
}