/* Psoriasis Detection portal — light + dark, palette per project dataviz spec */

:root {
  color-scheme: light;
  --page:           #f9f9f7;
  --surface:        #fcfcfb;
  --ink:            #0b0b0b;
  --ink-2:          #52514e;
  --muted:          #898781;
  --grid:           #e1e0d9;
  --baseline:       #c3c2b7;
  --border:         rgba(11, 11, 11, 0.10);
  --accent:         #2a78d6;   /* series-1 blue */
  --accent-ink:     #ffffff;
  --status-good:    #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical:#d03b3b;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page:     #0d0d0d;
    --surface:  #1a1a19;
    --ink:      #ffffff;
    --ink-2:    #c3c2b7;
    --muted:    #898781;
    --grid:     #2c2c2a;
    --baseline: #383835;
    --border:   rgba(255, 255, 255, 0.10);
    --accent:   #3987e5;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- chrome ---------- */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.topbar-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between; height: 56px;
}
.brand { color: var(--ink); font-weight: 700; display: flex; align-items: center; gap: 8px; }
.brand:hover { text-decoration: none; }
.brand-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.brand-sub { color: var(--muted); font-weight: 400; font-size: 13px; }
.topbar nav { display: flex; gap: 4px; }
.topbar nav a {
  color: var(--ink-2); padding: 6px 12px; border-radius: 8px; font-weight: 500;
}
.topbar nav a:hover { background: var(--page); text-decoration: none; }
.topbar nav a.active { color: var(--ink); background: var(--page); }

.container { max-width: 1100px; margin: 0 auto; padding: 24px 20px 48px; }
.footer {
  max-width: 1100px; margin: 0 auto; padding: 16px 20px 32px;
  color: var(--muted); font-size: 13px; border-top: 1px solid var(--grid);
}

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.page-sub { color: var(--ink-2); margin: 0 0 20px; }

/* ---------- cards / tiles ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 18px; margin-bottom: 20px;
}
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin-bottom: 20px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.tile .label { color: var(--ink-2); font-size: 13px; }
.tile .value { font-size: 28px; font-weight: 700; line-height: 1.2; margin-top: 2px; }
.tile .hint  { color: var(--muted); font-size: 12px; margin-top: 2px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; } }

/* ---------- tables ---------- */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th {
  text-align: left; color: var(--muted); font-weight: 500; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.04em;
  padding: 8px 10px; border-bottom: 1px solid var(--baseline);
}
td { padding: 8px 10px; border-bottom: 1px solid var(--grid); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-scroll { overflow-x: auto; }
.thumb { width: 64px; height: 40px; object-fit: cover; border-radius: 6px; border: 1px solid var(--border); display: block; }
.empty { color: var(--muted); padding: 24px 10px; text-align: center; }

/* ---------- badges (dot + label: never color alone) ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500; color: var(--ink);
  padding: 2px 10px 2px 8px; border: 1px solid var(--border); border-radius: 999px;
  white-space: nowrap;
}
.badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.badge-mild::before     { background: var(--status-good); }
.badge-moderate::before { background: var(--status-warning); }
.badge-severe::before   { background: var(--status-critical); }
.badge-none::before     { background: var(--baseline); }

/* ---------- grade distribution bars ---------- */
.dist-row { display: grid; grid-template-columns: 120px 1fr 48px; align-items: center; gap: 10px; margin: 10px 0; }
.dist-row .name  { font-size: 13px; color: var(--ink-2); }
.dist-row .count { font-size: 13px; text-align: right; font-variant-numeric: tabular-nums; }
.dist-track { background: var(--page); border-radius: 4px; height: 14px; overflow: hidden; }
.dist-fill  { height: 100%; border-radius: 0 4px 4px 0; background: var(--muted); min-width: 2px; }
.dist-mild     .dist-fill { background: var(--status-good); }
.dist-moderate .dist-fill { background: var(--status-warning); }
.dist-severe   .dist-fill { background: var(--status-critical); }
.dist-none     .dist-fill { background: var(--baseline); }

/* ---------- forms ---------- */
form.inline { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 12px; color: var(--ink-2); }
input, select, textarea {
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--baseline); border-radius: 8px;
  padding: 7px 10px; font: inherit; font-size: 14px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
button, .btn {
  background: var(--accent); color: var(--accent-ink); border: none; border-radius: 8px;
  padding: 8px 16px; font: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
}
button:hover, .btn:hover { filter: brightness(1.08); text-decoration: none; }
.btn-quiet { background: transparent; color: var(--ink-2); border: 1px solid var(--baseline); font-weight: 500; }
.btn-danger { background: var(--status-critical); }

.flash { border-left: 3px solid var(--status-good); padding: 10px 14px; margin-bottom: 16px;
         background: var(--surface); border-radius: 0 8px 8px 0; }
.flash.error { border-left-color: var(--status-critical); }

/* ---------- scan detail ---------- */
.scan-image img { max-width: 100%; border-radius: 12px; border: 1px solid var(--border); display: block; }
.meta-grid { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; font-size: 14px; }
.meta-grid dt { color: var(--ink-2); }
.meta-grid dd { margin: 0; font-variant-numeric: tabular-nums; }

/* ---------- sparkline ---------- */
.spark { width: 100%; height: auto; display: block; }
.spark .axis { stroke: var(--baseline); stroke-width: 1; }
.spark .line { stroke: var(--accent); stroke-width: 2; fill: none; }
.spark .dot  { fill: var(--accent); stroke: var(--surface); stroke-width: 2; }

.pager { display: flex; gap: 8px; margin-top: 14px; }