:root {
  --bg: #0b1323;
  --panel: #121c2f;
  --text: #e8eefc;
  --muted: #9fb0cc;
  --accent: #4ea1ff;
  --error: #ff6b6b;
  --ok: #37d67a;
  --radius: 16px;
}

* { box-sizing: border-box; }
body {
  margin: 0; padding: 0;
  background: radial-gradient(1200px 600px at 70% -10%, #1a2948 0%, var(--bg) 50%);
  color: var(--text); font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 880px; margin: 0 auto; padding: 24px; }

header { display: flex; align-items: center; justify-content: space-between; }
.brand { margin: 0; font-size: 24px; letter-spacing: .5px; }
nav a { margin-left: 16px; opacity: .9; }
nav a:hover { opacity: 1; }

.card {
  background: rgba(18,28,47,.7);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}

.list { line-height: 1.8; }
.muted { color: var(--muted); }

.form { display: grid; grid-gap: 12px; margin-top: 10px; }
input {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  border: 1px solid rgba(255,255,255,.15); background: rgba(255,255,255,.06);
  color: var(--text); font-size: 16px;
}
button, .btn {
  display: inline-block; padding: 10px 14px; border-radius: 10px; border: 0;
  background: linear-gradient(180deg, #4ea1ff, #297ae3);
  color: white; font-weight: 600; cursor: pointer;
}
button:hover, .btn:hover { filter: brightness(1.05); }
button:active, .btn:active { transform: translateY(1px); }

.hint { background: rgba(78,161,255,.12); border: 1px solid rgba(78,161,255,.35);
  padding: 10px; border-radius: 10px; margin: 10px 0; }
.error { background: rgba(255,107,107,.12); border: 1px solid rgba(255,107,107,.35);
  padding: 12px; border-radius: 10px; }
.ok { background: rgba(55,214,122,.12); border: 1px solid rgba(55,214,122,.35);
  padding: 12px; border-radius: 10px; }

pre { white-space: pre-wrap; word-break: break-word; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; }
code { background: rgba(255,255,255,.08); padding: 2px 6px; border-radius: 6px; }

..gallery-hint { display: flex; gap: 12px; margin: 12px 0; flex-wrap: wrap; }
.gallery-hint .thumb img { width: 160px; height: 90px; object-fit: cover;
  border-radius: 10px; border: 1px solid rgba(255,255,255,.15); display: block; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.cell { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12);
  border-radius: 12px; padding: 8px; }
.cell img { width: 100%; aspect-ratio: 16/9; object-fit: cover;
  border-radius: 8px; display: block; border: 1px solid rgba(255,255,255,.15); }
.cap { margin-top: 6px; font-size: 12px; color: var(--muted); word-break: break-all; }