/* Nutrition Tracker PWA — ticket 05 visual language */
:root {
  --bg: #18181b;
  --surface: #27272a;
  --border: #3f3f46;
  --text: #f4f4f5;
  --text-muted: #a1a1aa;
  --accent: #8b5cf6;
  --accent-2: #ec4899;
  --radius: 8px;
  --radius-pill: 99px;
  --grad: linear-gradient(90deg, var(--accent), var(--accent-2));
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

body {
  padding: calc(16px + env(safe-area-inset-top, 0px)) 16px
    calc(24px + env(safe-area-inset-bottom, 0px));
  max-width: 480px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 4px 4px 12px 4px;
}
.brand-mark {
  width: 40px; height: 40px;
  border-radius: var(--radius);
  display: grid; place-items: center;
  background: var(--grad);
  color: #fff;
  font-size: 22px;
}
.brand-text h1 {
  margin: 0;
  font-size: 22px; font-weight: 700; letter-spacing: -0.5px;
}
.brand-text p {
  margin: 0; font-size: 12px; color: var(--text-muted);
}
.ghost {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 8px 10px;
  font-size: 18px;
  cursor: pointer;
}
.ghost:hover { border-color: var(--text-muted); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 16px;
  margin-bottom: 14px;
}
.card h2 { margin: 0 0 4px; font-size: 18px; font-weight: 700; letter-spacing: -0.4px; }
.card h3 { margin: 0 0 8px; font-size: 14px; font-weight: 600; color: var(--text-muted); }
.muted { color: var(--text-muted); font-size: 12px; margin: 0; }

.field { margin-top: 12px; }
.label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}
textarea, input[type="text"], input[type="number"] {
  width: 100%;
  background: #1c1c1f;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  font-size: 16px; /* >=16px: iOS Safari auto-zooms on focus any input under 16px */
  font-family: inherit;
  line-height: 1.4;
}
textarea { resize: vertical; min-height: 70px; }
textarea:focus, input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 35%, transparent);
}

.row { display: flex; align-items: center; gap: 8px; }
.field.inline { flex: 1; display: flex; flex-direction: column; align-items: flex-start; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.chip {
  background: #1c1c1f;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  user-select: none;
}
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] {
  background: color-mix(in srgb, var(--accent) 24%, #1c1c1f);
  border-color: var(--accent);
  color: #fff;
}

.thumb {
  position: relative;
  display: inline-block;
  margin-top: 10px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #1c1c1f; /* solid backdrop so the box reads as intentional, not "broken" */
}
.thumb img {
  max-width: 200px;
  max-height: 150px;
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  background: #1c1c1f;
}
.thumb .icon {
  position: absolute;
  top: 6px; right: 6px;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  display: grid; place-content: center;
  line-height: 1; font-size: 15px; padding: 0;
}

.metric { margin-top: 16px; }
.metric-head {
  display: flex; justify-content: space-between; align-items: center;
}
.metric-head label { font-size: 13px; font-weight: 500; color: var(--text-muted); }
.badge {
  background: #1c1c1f;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  font-size: 12px; font-weight: 600;
  min-width: 44px; text-align: center;
}
.legend {
  display: flex; justify-content: space-between;
  font-size: 11px; color: var(--text-muted);
  margin-top: 4px;
}

/* Gradient range slider per ticket 05 */
input[type="range"] {
  appearance: none; -webkit-appearance: none;
  width: 100%; height: 8px;
  background: #1c1c1f;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  margin: 12px 0 4px 0;
  padding: 0;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none; -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #18181b;
  box-shadow: 0 0 0 1px var(--accent);
  margin-top: -7px;
}
input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px;
  border: 2px solid #18181b;
  border-radius: 50%;
  background: var(--accent);
}
input[type="range"]::-webkit-slider-runnable-track {
  background: transparent; height: 100%;
}
input[type="range"]:focus { outline: none; }
input[type="range"]:focus-visible { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 45%, transparent); }

.actions { margin-top: 18px; display: flex; gap: 10px; }
.primary, .soft {
  flex: 1;
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
}
.primary {
  background: var(--grad);
  color: #fff;
}
.primary:active { filter: brightness(0.9); }
.soft {
  background: #1c1c1f;
  color: var(--text);
  border: 1px solid var(--border);
  text-align: center;
}
.soft:hover { border-color: var(--text-muted); }
.icon { background: none; border: none; color: var(--text); cursor: pointer; font-size: 16px; }

.toast {
  position: fixed;
  top: 14px; left: 50%; transform: translateX(-50%);
  background: #27272a;
  color: #fff;
  border: 1px solid var(--accent);
  padding: 10px 16px;
  border-radius: var(--radius);
  z-index: 50;
  font-size: 13px;
  font-weight: 500;
  animation: pulse .3s ease;
}
@keyframes pulse { from { opacity: 0; transform: translate(-50%, -4px);} to { opacity:1; transform: translate(-50%, 0);} }

dialog#settings {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  margin: auto;
  width: min(92vw, 420px);
}
dialog#settings::backdrop { background: rgba(0,0,0,0.6); }
dialog#settings form { padding: 18px 18px 8px 18px; }
dialog#settings h2 { margin: 0 0 4px; font-size: 18px; font-weight: 700; }
dialog#settings .actions { margin-bottom: 8px; }

.save-status { margin-top: 10px; min-height: 1em; }
.history { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.history li {
  background: #1c1c1f;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 13px;
}
.history .meta { color: var(--text-muted); font-size: 11px; }

@media (max-width: 380px) {
  .brand-mark { width: 36px; height: 36px; }
  .brand-text h1 { font-size: 18px; }
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafa;
    --surface: #ffffff;
    --border: #e4e4e7;
    --text: #18181b;
    --text-muted: #52525b;
  }
}