:root {
  --bg: #f4f7fb;
  --paper: #ffffff;
  --ink: #0d141c;
  --ink-soft: #475569;
  --line: #cbd5e1;
  --accent: #2e8bff;
  --warn: #ef4444;
  --safe: #10b981;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky; top: 0; z-index: 5;
}
.brand { color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: 0.18em; }
.brand-sub { color: var(--ink-soft); font-weight: 500; margin-left: 6px; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 28px 20px 60px; }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 22px 24px;
  margin-bottom: 20px;
  box-shadow: 0 16px 40px -28px rgba(13,20,28,0.25);
}
.eyebrow { font-size: 11px; letter-spacing: 0.32em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 6px; }
h1 { margin: 0 0 8px; font-size: 24px; letter-spacing: -0.01em; }
h2 { margin: 0 0 8px; font-size: 18px; letter-spacing: -0.01em; }
p.muted { color: var(--ink-soft); margin: 4px 0 14px; line-height: 1.5; font-size: 14px; }

.form-row { display: flex; gap: 8px; flex-wrap: wrap; }
input[type=password], input[type=text] {
  appearance: none; padding: 11px 14px; border: 1px solid var(--line); border-radius: 3px;
  font: inherit; min-width: 220px; background: #fff; color: var(--ink);
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button.primary, button.ghost, button.danger {
  appearance: none; border: 0; padding: 10px 18px; font: inherit; font-weight: 600;
  letter-spacing: 0.04em; border-radius: 3px; cursor: pointer;
}
button.primary { background: var(--ink); color: #fff; }
button.primary:hover { background: var(--accent); }
button.ghost   { background: transparent; color: var(--ink); border: 1px solid var(--line); }
button.danger  { background: transparent; color: var(--warn); border: 1px solid var(--warn); padding: 6px 10px; font-size: 12px; }
button.danger:hover { background: var(--warn); color: #fff; }
.err { color: var(--warn); margin-top: 10px; font-size: 14px; }
.ok  { color: var(--safe); margin-top: 10px; font-size: 14px; }

.grid { display: grid; gap: 18px; }

.state-grid {
  display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}
.slot {
  border: 1px solid var(--line); border-radius: 3px;
  padding: 12px; background: #fbfdff;
  display: flex; flex-direction: column; gap: 8px;
}
.slot .key {
  font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-soft); font-weight: 700;
}
.slot .preview {
  height: 120px;
  background: repeating-conic-gradient(#eef2f7 0 25%, #f8fafc 0 50%) 0 0/12px 12px;
  border: 1px solid var(--line);
  display: grid; place-items: center;
  overflow: hidden;
}
.slot .preview img, .slot .preview audio { max-width: 100%; max-height: 100%; }
.slot .preview .empty { color: var(--ink-soft); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; }
.slot .actions { display: flex; gap: 6px; align-items: center; }
.slot input[type=file] { font-size: 12px; flex: 1; }
.slot .meta { font-size: 11px; color: var(--ink-soft); word-break: break-all; }
@media (min-width: 720px) {
  .grid { grid-template-columns: 1fr 1fr; }
}