:root {
  --bg: #101114;
  --panel: #17181c;
  --border: #2a2c32;
  --text: #e8e8ea;
  --muted: #8b8d96;
  --accent: #5b8def;
  --accent-hover: #4373d6;
  --ok: #4caf7d;
  --err: #e2584f;
  --radius: 10px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.topbar .brand a { color: var(--text); font-weight: 600; font-size: 17px; }
.topbar nav a { margin-left: 20px; color: var(--muted); }
.topbar nav a:hover { color: var(--text); }

.container { max-width: 1080px; margin: 0 auto; padding: 28px 24px 60px; }

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.muted { color: var(--muted); font-size: 14px; }
.error { color: var(--err); font-size: 14px; }

.login-box {
  max-width: 340px; margin: 15vh auto 0; padding: 28px;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  text-align: center;
}
.login-box form { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }

input[type=text], input[type=password], select {
  background: #0d0e11; border: 1px solid var(--border); color: var(--text);
  padding: 9px 11px; border-radius: 8px; font-size: 14px;
}

button, .btn {
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 9px 16px; font-size: 14px; font-weight: 600; cursor: pointer;
}
button:hover, .btn:hover { background: var(--accent-hover); }
button.secondary, .btn.secondary { background: #2a2c32; }
button.secondary:hover, .btn.secondary:hover { background: #35373f; }
button.danger { background: var(--err); }
button:disabled { opacity: .5; cursor: not-allowed; }

.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; margin-bottom: 20px;
}
.row { display: flex; gap: 20px; flex-wrap: wrap; }
.row > .card { flex: 1; min-width: 300px; }

.dropzone {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 24px; text-align: center; color: var(--muted); cursor: pointer;
  transition: border-color .15s;
}
.dropzone.drag { border-color: var(--accent); color: var(--text); }

.thumb-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 10px; margin-top: 14px;
}
.thumb {
  position: relative; border-radius: 8px; overflow: hidden; border: 1px solid var(--border);
  aspect-ratio: 1; background: #0d0e11;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb .name {
  position: absolute; bottom: 0; left: 0; right: 0; padding: 3px 5px;
  background: rgba(0,0,0,.65); font-size: 10px; white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis;
}
.thumb .badge {
  position: absolute; top: 4px; right: 4px; font-size: 10px; padding: 2px 6px;
  border-radius: 20px; background: var(--ok); color: #06301c; font-weight: 700;
}
.thumb .badge.no { background: #494a52; color: #cfd0d6; }
.thumb .del {
  position: absolute; top: 4px; left: 4px; background: rgba(0,0,0,.6); color: #fff;
  border: none; border-radius: 6px; font-size: 11px; padding: 1px 6px; cursor: pointer;
}
.thumb { cursor: pointer; }
.thumb .pick {
  position: absolute; bottom: 4px; right: 4px; width: 16px; height: 16px; margin: 0;
  z-index: 2; cursor: pointer;
}
.thumb.deselected { opacity: .35; }
.thumb.deselected::after {
  content: ""; position: absolute; inset: 0; border: 2px solid var(--err); border-radius: 8px;
  pointer-events: none;
}
.grid-toolbar {
  display: flex; align-items: center; gap: 10px; margin-top: 10px; flex-wrap: wrap;
}
.grid-toolbar button { padding: 5px 10px; font-size: 12px; }
.grid-toolbar .count { font-size: 12px; color: var(--muted); }

.progress-bar {
  height: 8px; border-radius: 6px; background: #0d0e11; overflow: hidden; margin: 10px 0;
}
.progress-bar > div { height: 100%; background: var(--accent); width: 0%; transition: width .2s; }

.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
label.inline { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--muted); }

/* Calibrate page */
.calib-layout { display: flex; gap: 20px; }
.calib-side { width: 220px; flex-shrink: 0; }
.calib-list { display: flex; flex-direction: column; gap: 6px; max-height: 78vh; overflow-y: auto; }
.calib-list button {
  background: #1d1f24; color: var(--text); text-align: left; font-weight: 400;
  border: 1px solid var(--border);
}
.calib-list button.active { border-color: var(--accent); }
.calib-list button .yes { color: var(--ok); }
.calib-list button .no { color: var(--muted); }
.calib-main { flex: 1; }
.calib-canvas-wrap { position: relative; display: inline-block; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
canvas { display: block; cursor: crosshair; max-width: 100%; }
.help { font-size: 12.5px; color: var(--muted); line-height: 1.6; margin-top: 10px; }
kbd {
  background: #26282f; border: 1px solid #3a3c44; border-radius: 4px; padding: 1px 6px;
  font-size: 11px; font-family: monospace;
}