:root {
  --bg: #0f1115;
  --panel: #181b22;
  --panel2: #1f232c;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --muted: #8b94a3;
  --accent: #6aa9ff;
  --accent2: #2563eb;
  --ok: #4ade80;
  --warn: #fbbf24;
  --err: #f87171;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fa;
    --panel: #ffffff;
    --panel2: #f0f2f6;
    --border: #dde1e8;
    --text: #1a1d23;
    --muted: #6b7280;
    --accent: #2563eb;
    --accent2: #1d4ed8;
    --ok: #16a34a;
    --warn: #d97706;
    --err: #dc2626;
  }
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font: 15px/1.45 system-ui, -apple-system, sans-serif;
  background: var(--bg); color: var(--text);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topnav {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 22px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.topnav .brand {
  font-weight: 600; letter-spacing: 0.02em;
  color: var(--text); padding-right: 12px; border-right: 1px solid var(--border);
}
.topnav .navlink { color: var(--muted); }
.topnav .navlink:hover { color: var(--text); text-decoration: none; }
.topnav .spacer { flex: 1; }
.topnav .user { color: var(--muted); }
.topnav .inline { display: inline; }

.main { max-width: 1100px; margin: 0 auto; padding: 22px; }
h1 { margin-top: 0; font-size: 24px; }
h2 { font-size: 18px; margin: 0 0 12px 0; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  margin-bottom: 18px;
}
.card.narrow { max-width: 380px; margin: 60px auto; }

.grid { display: grid; gap: 16px; margin-bottom: 18px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 720px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

label { display: block; margin: 8px 0; color: var(--muted); font-size: 13px; }
input, select, textarea {
  display: block; width: 100%;
  margin-top: 4px; padding: 8px 10px;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px;
  font: inherit;
}
input[type="file"] { padding: 6px; }
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent);
}

button {
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 8px 16px; font: inherit; cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary {
  background: var(--accent2); color: white; border-color: var(--accent2);
}
button.primary:hover { background: var(--accent); border-color: var(--accent); }
button.link {
  background: none; border: none; color: var(--accent); padding: 0; cursor: pointer;
}
button.link.danger { color: var(--err); }
button.link:hover { text-decoration: underline; }
.inline { display: inline; }
.inline-form { margin-bottom: 12px; }

.muted { color: var(--muted); }
.muted.small { font-size: 12px; }
.error { color: var(--err); }
.ok { color: var(--ok); }
.hidden { display: none; }

.stat-label { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; }
.stat-value { font-size: 32px; font-weight: 600; margin: 4px 0; }
.stat-value .unit { font-size: 16px; color: var(--muted); }

.macros { display: flex; gap: 18px; flex-wrap: wrap; }
.macros span { color: var(--muted); }
.macros strong { color: var(--text); font-size: 18px; }
.macros.big strong { font-size: 22px; }

.entries { width: 100%; border-collapse: collapse; }
.entries th, .entries td {
  text-align: left; padding: 8px 6px;
  border-bottom: 1px solid var(--border);
}
.entries th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
.entries td { font-size: 14px; }

.badge {
  display: inline-block; padding: 2px 8px; border-radius: 12px;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em;
  background: var(--panel2); color: var(--muted); border: 1px solid var(--border);
}
.badge-ai { background: rgba(106, 169, 255, 0.15); color: var(--accent); border-color: var(--accent); }
.badge-import { background: rgba(251, 191, 36, 0.15); color: var(--warn); border-color: var(--warn); }

#photo-draft { margin-top: 14px; }
#photo-draft img { max-width: 240px; border-radius: 8px; border: 1px solid var(--border); }

/* Chart.js wrappers must have an explicit height; canvas with
   maintainAspectRatio:false will fill the parent box. Without this the
   canvas + parent feedback-loop and the page grows forever. */
.chart-wrap { position: relative; height: 240px; }
.chart-wrap canvas { width: 100% !important; height: 100% !important; }

/* Target tiles + calendar heatmap + weight progress. */
.tile {
  background: var(--panel2);
  padding: 14px; border-radius: 8px;
  border: 1px solid var(--border);
}
.tile-label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.tile-value { font-size: 26px; font-weight: 600; margin: 6px 0 8px; }

.progress { height: 6px; background: var(--panel); border-radius: 3px; overflow: hidden; margin: 4px 0 6px; }
.progress .bar { height: 100%; transition: width 0.3s; background: var(--ok); }
.progress .bar-under  { background: var(--ok); }
.progress .bar-within { background: var(--warn); }
.progress .bar-over   { background: var(--err); }

.calendar { margin-top: 18px; }
.cal-label {
  color: var(--muted); margin-bottom: 8px;
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em;
}
.cal-grid {
  display: grid; grid-template-columns: repeat(7, minmax(28px, 1fr));
  gap: 4px; max-width: 360px;
}
.cal-head {
  text-align: center; color: var(--muted);
  font-size: 11px; padding: 2px 0;
}
.cal-cell {
  aspect-ratio: 1; min-height: 28px;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; border-radius: 4px;
  background: var(--panel2); color: var(--muted);
  border: 1px solid transparent;
}
.cal-cell.cal-pad     { background: transparent; border: none; }
.cal-cell.cal-under   { background: rgba(74, 222, 128, 0.40); color: var(--text); }
.cal-cell.cal-within  { background: rgba(251, 191, 36, 0.40); color: var(--text); }
.cal-cell.cal-over    { background: rgba(248, 113, 113, 0.40); color: var(--text); }
.cal-cell.cal-none    { background: var(--panel2); color: var(--muted); }
.cal-cell.cal-future  { background: var(--panel); color: var(--muted); opacity: 0.5; }

.cal-legend {
  display: flex; gap: 16px; margin-top: 12px; flex-wrap: wrap;
  font-size: 12px; color: var(--muted); align-items: center;
}
.cal-legend i {
  width: 14px; height: 14px; display: inline-block;
  vertical-align: middle; margin-right: 6px; aspect-ratio: auto;
  min-height: 0; border-radius: 3px;
}

.weight-progress { margin-top: 18px; }
.wp-bar {
  position: relative; height: 14px;
  background: var(--panel2); border-radius: 7px;
  border: 1px solid var(--border);
  margin: 26px 0 8px;
}
.wp-fill {
  position: absolute; top: 0; bottom: 0; left: 0;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  border-radius: 7px;
}
.wp-marker {
  position: absolute; top: -3px;
  width: 14px; height: 18px;
  background: var(--text); border-radius: 3px;
  box-shadow: 0 0 0 2px var(--bg);
}
.wp-end-left, .wp-end-right {
  position: absolute; top: -22px;
  font-size: 11px; color: var(--muted);
}
.wp-end-left  { left: 0; }
.wp-end-right { right: 0; }

/* Tabs (used for camera vs upload). */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 14px; }
.tab {
  background: none; border: none; border-bottom: 2px solid transparent;
  color: var(--muted); padding: 8px 14px; font: inherit; cursor: pointer;
  border-radius: 0;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

/* Camera viewfinder. */
#cam-stage { display: flex; flex-direction: column; align-items: center; gap: 12px; }
#cam-video, #cam-shot {
  max-width: 100%; width: 480px; max-height: 60vh;
  background: black; border-radius: 8px; border: 1px solid var(--border);
  display: block;
}
.cam-controls { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; justify-content: center; }
button.big { font-size: 16px; padding: 12px 24px; }
#cam-error { display: inline-block; margin-left: 12px; }