:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-2: #1f2937;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --primary: #22c55e;
  --primary-dark: #16a34a;
  --danger: #ef4444;
  --border: #334155;
  --white: #ffffff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, #0b1220 0%, #111827 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code { background: rgba(255,255,255,.08); padding: 2px 6px; border-radius: 6px; }
.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 24px; border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(15, 23, 42, .75); backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 10;
}
.topbar h1 { margin: 0 0 6px; font-size: 1.8rem; }
.page { max-width: 1200px; margin: 0 auto; padding: 24px; }
.grid.two { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; }
.card, .login-card, .box-item {
  background: rgba(17, 24, 39, .9); border: 1px solid rgba(148,163,184,.16); border-radius: 18px;
  box-shadow: 0 8px 30px rgba(0,0,0,.24);
}
.card { padding: 20px; margin-bottom: 20px; }
.login-body { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: 100%; max-width: 420px; padding: 28px; }
.stack { display: grid; gap: 14px; }
label span { display: block; margin-bottom: 6px; color: var(--muted); font-size: .95rem; }
input[type="text"], input[type="password"], input[type="file"], select, textarea {
  width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font: inherit;
}
textarea { resize: vertical; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 16px; border-radius: 12px; border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04); color: var(--white); cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn.primary { background: var(--primary); color: #052e16; border-color: transparent; font-weight: 700; }
.btn.primary:hover { background: var(--primary-dark); color: #fff; }
.btn.danger { background: rgba(239,68,68,.12); border-color: rgba(239,68,68,.3); color: #fecaca; }
.btn.wide { width: 100%; }
.alert {
  padding: 14px 16px; border-radius: 14px; margin-bottom: 20px; border: 1px solid transparent;
}
.alert.success { background: rgba(34,197,94,.12); border-color: rgba(34,197,94,.3); color: #bbf7d0; }
.alert.error { background: rgba(239,68,68,.12); border-color: rgba(239,68,68,.3); color: #fecaca; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.help { margin-top: 16px; color: var(--muted); font-size: .92rem; }
.filters { display: grid; grid-template-columns: 2fr 1fr auto auto; gap: 12px; }
.box-list { display: grid; gap: 16px; }
.box-item { padding: 0; overflow: hidden; }
.box-item summary {
  list-style: none; display: flex; justify-content: space-between; align-items: center;
  gap: 16px; padding: 16px 18px; cursor: pointer; background: rgba(255,255,255,.02);
}
.box-item summary::-webkit-details-marker { display: none; }
.pill {
  display: inline-flex; align-items: center; padding: 6px 10px; border-radius: 999px;
  background: rgba(34,197,94,.12); color: #bbf7d0; font-size: .9rem;
}
.inline-form-wrap { padding: 0 18px 10px; }
.inline-form { padding-top: 12px; }
.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; padding: 0 18px 18px; }
.tool-card {
  border: 1px solid rgba(148,163,184,.14); border-radius: 16px; overflow: hidden; background: rgba(255,255,255,.02);
}
.tool-card img, .img-placeholder { width: 100%; aspect-ratio: 4/3; object-fit: cover; background: #0b1220; }
.img-placeholder { display: grid; place-items: center; color: var(--muted); }
.tool-content { padding: 14px; }
.tool-content h3 { margin: 0 0 8px; }
.tool-content p { margin: 0 0 12px; color: #cbd5e1; }
.row { display: flex; align-items: center; }
.gap { gap: 10px; flex-wrap: wrap; }
.checkbox { display: flex; gap: 10px; align-items: center; }
.checkbox input { width: auto; }
.topbar-actions { display: flex; gap: 10px; }
@media (max-width: 900px) {
  .grid.two, .tool-grid, .filters { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; flex-direction: column; }
}