:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #090b10;
  color: #f5f7fb;
  --card: #141821;
  --line: #2a303d;
  --muted: #a2aabb;
  --accent: #75e7b7;
  --danger: #ff7e8a;
  --warning: #ffcc67;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at top, #17202d, #090b10 45%); }
.shell { width: min(720px, 100%); margin: 0 auto; padding: 28px 16px 60px; }
header { margin: 18px 2px 28px; }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .15em; }
h1 { margin: 8px 0 10px; font-size: clamp(30px, 8vw, 48px); line-height: 1.02; }
h2 { margin: 0; font-size: 20px; }
p { color: var(--muted); line-height: 1.5; }
.card { padding: 18px; margin: 14px 0; border: 1px solid var(--line); border-radius: 18px; background: color-mix(in srgb, var(--card) 94%, transparent); box-shadow: 0 16px 50px rgba(0,0,0,.2); }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { display: grid; gap: 7px; margin-bottom: 14px; color: #d8ddea; font-size: 14px; font-weight: 650; }
input, select, button { width: 100%; min-height: 48px; border-radius: 12px; font: inherit; }
input, select { border: 1px solid var(--line); padding: 0 13px; background: #0c1017; color: #fff; }
input:focus, select:focus { outline: 2px solid color-mix(in srgb, var(--accent) 65%, transparent); border-color: transparent; }
input[type="range"] { min-height: 24px; padding: 0; accent-color: var(--accent); }
button { border: 0; padding: 0 16px; cursor: pointer; font-weight: 800; }
button:disabled { opacity: .5; cursor: wait; }
.primary { background: var(--accent); color: #07130e; }
.secondary { border: 1px solid var(--line); background: #171c26; color: #fff; }
.compact { width: auto; min-height: 38px; }
.section-title, .actions { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.actions button { flex: 1; }
.file-row { position: relative; display: grid; grid-template-columns: 140px 1fr 38px; align-items: end; gap: 8px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.file-picker span { display: flex; align-items: center; min-height: 48px; padding: 0 13px; border: 1px dashed #465064; border-radius: 12px; color: var(--muted); overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.file-picker input { display: none; }
.remove { min-height: 38px; padding: 0; margin-bottom: 14px; background: transparent; color: var(--muted); font-size: 25px; }
.hint { margin: 14px 0 0; font-size: 13px; }
.hidden { display: none; }
.result.ok { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
.result.error { border-color: color-mix(in srgb, var(--danger) 55%, var(--line)); }
.result pre { overflow: auto; padding: 12px; border-radius: 10px; background: #090c12; color: #cfe8dc; font-size: 12px; }
.status { padding: 10px 0; border-bottom: 1px solid var(--line); }
.status strong { display: block; }
.status small { color: var(--muted); }
.status[data-level="warning"] strong { color: var(--warning); }
.status[data-level="error"] strong { color: var(--danger); }
.status[data-level="ok"] strong { color: var(--accent); }

@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; gap: 0; }
  .file-row { grid-template-columns: 112px 1fr 32px; }
  .actions { position: sticky; bottom: 8px; padding: 8px; border: 1px solid var(--line); border-radius: 16px; background: rgba(9,11,16,.92); backdrop-filter: blur(12px); }
}