/* ═══════════════════════════════════════════════
   THEME VARIABLES
   ═══════════════════════════════════════════════ */
:root {
  /* Light theme */
  --bg:        #F1F5F9;
  --surface:   #FFFFFF;
  --raised:    #E8EEF5;
  --accent:    #16A34A;
  --accent-r:  22;
  --accent-g:  163;
  --accent-b:  74;
  --text:      #0F172A;
  --sub:       #64748B;
  --border:    rgba(15,23,42,0.09);
  --border-s:  rgba(15,23,42,0.14);
  --danger:    #DC2626;
  --warn:      #D97706;
  --shadow:    rgba(15,23,42,0.10);
  --skeleton1: #E2E8F0;
  --skeleton2: #CBD5E1;
  --modal-bg:  rgba(15,23,42,0.55);
  --scan-col:  rgba(22,163,74,0.18);
  --scan-peak: rgba(22,163,74,0.38);
}

html.dark {
  --bg:        #09090E;
  --surface:   #0F1520;
  --raised:    #161E2C;
  --accent:    #22C55E;
  --accent-r:  34;
  --accent-g:  197;
  --accent-b:  94;
  --text:      #E2EAF3;
  --sub:       #7B9AB2;
  --border:    rgba(255,255,255,0.07);
  --border-s:  rgba(255,255,255,0.12);
  --danger:    #F87171;
  --warn:      #FBBF24;
  --shadow:    rgba(0,0,0,0.45);
  --skeleton1: #0F1520;
  --skeleton2: #1C2840;
  --modal-bg:  rgba(0,0,0,0.7);
  --scan-col:  rgba(34,197,94,0.10);
  --scan-peak: rgba(34,197,94,0.28);
}

/* ═══════════════════════════════════════════════
   BASE
   ═══════════════════════════════════════════════ */
* { -webkit-tap-highlight-color: transparent; box-sizing: border-box; }

html {
  transition: background-color 0.22s ease;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Outfit', system-ui, sans-serif;
  overscroll-behavior-y: none;
  -webkit-font-smoothing: antialiased;
}

.safe-top    { padding-top:    max(env(safe-area-inset-top),    16px); }
.safe-bottom { padding-bottom: max(env(safe-area-inset-bottom), 20px); }

/* Scrollbar */
::-webkit-scrollbar       { width: 3px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-s); border-radius: 2px; }

/* Inputs */
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; appearance: none; margin: 0; }
input[type=number] { -moz-appearance: textfield; }

/* ═══════════════════════════════════════════════
   SEMANTIC COLOUR UTILITIES
   ═══════════════════════════════════════════════ */
.t-bg       { background: var(--bg); }
.t-surface  { background: var(--surface); }
.t-raised   { background: var(--raised); }
.t-text     { color: var(--text); }
.t-sub      { color: var(--sub); }
.t-accent   { color: var(--accent); }
.t-danger   { color: var(--danger); }

.b-border   { border-color: var(--border); }
.b-border-s { border-color: var(--border-s); }
.b-accent   { border-color: var(--accent); }
.b-accent-25 { border-color: rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.25); }
.b-danger   { border-color: rgba(var(--danger),0.25); }

.bg-accent-8  { background: rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.08); }
.bg-accent-12 { background: rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.12); }
.bg-accent-18 { background: rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.18); }
.ring-accent  { box-shadow: 0 0 0 1px rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.35); }

.glow-accent { box-shadow: 0 0 28px rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.18); }

/* ═══════════════════════════════════════════════
   COMPONENTS
   ═══════════════════════════════════════════════ */
.skeleton {
  background: linear-gradient(
    105deg,
    var(--skeleton1) 0%,
    var(--skeleton1) 30%,
    var(--skeleton2) 50%,
    var(--skeleton1) 70%,
    var(--skeleton1) 100%
  );
  background-size: 300% 100%;
  animation: shimmer 2s ease-in-out infinite;
}

.modal-bg {
  background: var(--modal-bg);
  backdrop-filter: blur(20px) saturate(0.8);
  -webkit-backdrop-filter: blur(20px) saturate(0.8);
}

/* Scan beam */
.scan-strip {
  position: absolute; top: 0; bottom: 0; right: 0; width: 55%;
  background: linear-gradient(90deg, transparent 0%, var(--scan-col) 30%, var(--scan-peak) 50%, var(--scan-col) 70%, transparent 100%);
  animation: scanBeam 3s linear infinite;
}

/* Toggle pill spring */
.pill-anim { transition: left 300ms cubic-bezier(0.34,1.56,0.64,1), background-color 0.2s ease, border-color 0.2s ease; }

/* Card press */
.card-btn {
  transition: transform 160ms cubic-bezier(0.16,1,0.3,1), opacity 160ms ease, box-shadow 160ms ease;
}
.card-btn:active { transform: scale(0.963); opacity: 0.8; }

/* Smooth transitions for theme-switching elements */
.t-smooth {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.15s ease, box-shadow 0.2s ease;
}

/* Input base */
.field {
  width: 100%;
  background: var(--raised);
  border: 1px solid var(--border-s);
  color: var(--text);
  border-radius: 14px;
  padding: 13px 16px;
  font-size: 15px;
  font-family: 'Outfit', sans-serif;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.field::placeholder { color: var(--sub); opacity: 0.7; }
.field:focus {
  border-color: rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.5);
  box-shadow: 0 0 0 3px rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.12);
}

/* Primary button */
.btn-primary {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 14px;
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  font-family: 'Outfit', sans-serif;
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.15s cubic-bezier(0.16,1,0.3,1);
}
html.dark .btn-primary { color: #0a1a0e; }
.btn-primary:active    { transform: scale(0.975); opacity: 0.85; }
.btn-primary:disabled  { opacity: 0.4; cursor: not-allowed; transform: none; }

/* Time wheel — an in-app replacement for <input type="time">, whose OS picker
   ignores the theme entirely. Snap points do the alignment; JS only reads which
   row landed in the middle. */
.wheel-set {
  --wheel-row: 44px;
  position: relative;
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 2px;
  padding: 4px 8px;
  border-radius: 16px;
  background: var(--raised);
  border: 1px solid var(--border-s);
}

/* The lit row sits under the numbers, so the selection reads as a slot. */
.wheel-band {
  position: absolute;
  top: 50%; left: 8px; right: 8px;
  height: var(--wheel-row);
  transform: translateY(-50%);
  border-radius: 12px;
  background: rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.10);
  border: 1px solid rgba(var(--accent-r),var(--accent-g),var(--accent-b),0.28);
  pointer-events: none;
}

.wheel {
  position: relative;
  flex: 0 1 84px;
  min-width: 0;
  height: calc(var(--wheel-row) * 3);
  overflow-y: auto;
  scroll-snap-type: y mandatory;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  /* Rows fade out towards the rims instead of being clipped flat. */
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 30%, #000 70%, transparent);
          mask-image: linear-gradient(to bottom, transparent, #000 30%, #000 70%, transparent);
}
.wheel::-webkit-scrollbar { display: none; }

/* Half-row padding at both ends lets the first and last value reach the centre. */
.wheel-pad { height: var(--wheel-row); }

.wheel-item {
  display: block;
  width: 100%;
  height: var(--wheel-row);
  line-height: var(--wheel-row);
  scroll-snap-align: center;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 19px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--sub);
  opacity: 0.4;
  transition: color 0.15s ease, opacity 0.15s ease, transform 0.15s cubic-bezier(0.16,1,0.3,1);
}
.wheel-item.is-active {
  color: var(--text);
  opacity: 1;
  transform: scale(1.12);
}

/* Unit caption pinned to the selected row, so a duration wheel reads "04 h 20 min". */
.wheel-unit {
  align-self: center;
  padding: 0 2px 2px 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--sub);
}

.wheel-sep {
  align-self: center;
  font-size: 19px;
  font-weight: 700;
  color: var(--sub);
  padding-bottom: 2px;
}

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