/* ZigZip — dark mobile-first styles (house pattern). */
:root {
  --bg: #0b1220;
  --card: #111a2e;
  --card-2: #0e1626;
  --text: #e8eefc;
  --muted: #93a1bd;
  --accent: #f7a41d;      /* zig yellow */
  --accent-2: #4dd0b1;    /* teal for stats */
  --border: #22304d;
  --danger: #ff6b6b;
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
}

.skip-link {
  position: absolute; left: -9999px;
}
.skip-link:focus { left: 8px; top: 8px; background: var(--card); padding: 6px 10px; border-radius: 8px; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: rgba(11, 18, 32, .92); backdrop-filter: blur(6px);
  z-index: 5;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { display: block; }
.brand strong { display: block; font-size: 17px; }
.tagline { color: var(--muted); font-size: 12px; }

select {
  background: var(--card-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 8px 10px; font-size: 14px;
}

main { max-width: 760px; margin: 0 auto; padding: 14px 14px 40px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-top: 14px;
}

.hero h1 { margin: 8px 0 6px; font-size: 24px; line-height: 1.25; }
.hero p { margin: 0; color: var(--muted); font-size: 15px; }

.badge-zig {
  display: inline-block; font-size: 12px; letter-spacing: .4px;
  color: #1c1403; background: var(--accent);
  padding: 3px 10px; border-radius: 999px; font-weight: 600;
}

.section { margin: 0 0 10px; font-size: 16px; }

.file-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.btn {
  appearance: none; cursor: pointer;
  background: var(--card-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 14px; font-size: 15px;
}
.btn:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); color: #1c1403; border-color: transparent; font-weight: 600; }
.btn-primary:hover { filter: brightness(1.06); }
.btn[hidden] { display: none; }
label.btn { display: inline-flex; align-items: center; }

.hint { color: var(--muted); font-size: 13px; margin: 10px 0 0; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 480px) { .grid { grid-template-columns: 1fr; } }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.field select { width: 100%; }

.checks { display: flex; gap: 18px; margin: 12px 0 4px; flex-wrap: wrap; }
.check { display: inline-flex; gap: 8px; align-items: center; font-size: 15px; cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--accent); }

.canvases { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .canvases { grid-template-columns: 1fr; } }
figure { margin: 0; }
figcaption { font-size: 13px; color: var(--muted); margin-bottom: 6px; display: flex; gap: 8px; align-items: center; }
canvas {
  width: 100%; height: auto; display: block;
  background:
    repeating-conic-gradient(#1a2440 0% 25%, #141d33 0% 50%) 0 / 16px 16px;
  border: 1px solid var(--border); border-radius: 10px;
}
.impl-pill {
  font-size: 11px; padding: 1px 8px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--muted);
}

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0; }
.stat {
  background: var(--card-2); border: 1px solid var(--border);
  border-radius: 10px; padding: 8px 10px;
  display: flex; flex-direction: column; gap: 2px;
}
.stat-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.stat-value { font-size: 15px; font-weight: 600; color: var(--accent-2); }

.actions { display: flex; gap: 10px; flex-wrap: wrap; }

.error { color: var(--danger); font-size: 14px; margin: 10px 0 0; }

footer {
  margin-top: 26px; text-align: center;
  color: var(--muted); font-size: 13px;
}
footer code { color: var(--accent); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  overflow: hidden; clip: rect(1px, 1px, 1px, 1px); white-space: nowrap;
}