:root {
  --bg: #0b1220;
  --card: #111a2e;
  --field: #0b1424;
  --border: rgba(148, 163, 184, 0.28);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-ink: #04202e;
  --danger: #f87171;
  --warn: #fbbf24;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f1f5f9;
    --card: #ffffff;
    --field: #f8fafc;
    --border: rgba(71, 85, 105, 0.3);
    --text: #0f172a;
    --muted: #475569;
    --accent: #0369a1;
    --accent-ink: #ffffff;
    --danger: #b91c1c;
    --warn: #92400e;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Vazirmatn", "Segoe UI", Tahoma, system-ui, sans-serif;
  line-height: 1.7;
}

.wrap { max-width: 680px; margin: 0 auto; padding: 24px 16px 48px; }

.top { margin-bottom: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-size: 1.4rem; font-weight: 700; }
.sub { color: var(--muted); margin: 8px 0 0; font-size: 0.95rem; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 20px; margin-bottom: 16px; }
h2 { margin: 0 0 8px; font-size: 1.15rem; }

.tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.tabs button { flex: 1; padding: 10px; border-radius: 10px; border: 1px solid var(--border); background: transparent; color: var(--muted); font: inherit; cursor: pointer; }
.tabs button[aria-selected="true"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }

textarea, input[type="text"], input[type="password"], select {
  width: 100%;
  background: var(--field);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
}
textarea { resize: vertical; min-height: 160px; font-family: ui-monospace, Consolas, monospace; font-size: 0.92rem; }
textarea:focus, input:focus, select:focus, button:focus-visible, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.field { display: block; margin: 16px 0 6px; font-weight: 600; font-size: 0.95rem; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 6px 0 0; }
.hint.warn { color: var(--warn); margin-top: 12px; }
.error { color: var(--danger); font-size: 0.92rem; margin: 12px 0 0; }

.pw, .copyrow { display: flex; gap: 8px; }
.pw input, .copyrow input { flex: 1; min-width: 0; }
.copyrow input { font-family: ui-monospace, Consolas, monospace; font-size: 0.88rem; }

.drop { display: block; border: 2px dashed var(--border); border-radius: 12px; padding: 36px 16px; text-align: center; color: var(--muted); cursor: pointer; }
.drop.over, .drop:hover { border-color: var(--accent); color: var(--text); }

button, .btn { font: inherit; cursor: pointer; border-radius: 10px; padding: 10px 16px; border: 1px solid var(--border); text-decoration: none; display: inline-block; }
button.primary, .btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }
button.ghost { background: transparent; color: var(--text); white-space: nowrap; }
button:disabled { opacity: 0.6; cursor: wait; }
#create-btn, #open-btn { width: 100%; margin-top: 18px; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.filebox { margin: 0; word-break: break-all; }
.foot { color: var(--muted); font-size: 0.8rem; text-align: center; margin-top: 24px; }

@media (max-width: 480px) {
  .pw { flex-wrap: wrap; }
  .pw input { flex-basis: 100%; }
}