:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0b1112;
  color: #eef7f4;
  --surface: #132223;
  --surface-2: #192d2e;
  --border: #2b4747;
  --muted: #9db1af;
  --accent: #59c9c1;
  --danger: #ff9b9b;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at top right, #183335 0, #0b1112 45%); }
button, input { font: inherit; }
button { cursor: pointer; }
.shell { width: min(1080px, calc(100% - 32px)); margin: 0 auto; padding: 56px 0 80px; }
.panel { background: rgba(19, 34, 35, .92); border: 1px solid var(--border); border-radius: 20px; box-shadow: 0 20px 80px rgba(0, 0, 0, .25); }
.auth-panel { width: min(440px, 100%); margin: 8vh auto 0; padding: 32px; }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .16em; }
h1 { margin: 0; font-size: clamp(28px, 4vw, 42px); letter-spacing: -.03em; }
.muted { color: var(--muted); line-height: 1.6; }
form { display: grid; gap: 16px; margin-top: 28px; }
label { display: grid; gap: 8px; color: #c8d8d5; font-size: 14px; font-weight: 700; }
input { width: 100%; border: 1px solid var(--border); border-radius: 12px; padding: 13px 14px; color: #eef7f4; background: var(--surface-2); outline: none; }
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(89, 201, 193, .15); }
button { border: 0; border-radius: 12px; padding: 13px 18px; color: #062525; background: var(--accent); font-weight: 800; }
button.secondary { border: 1px solid var(--border); color: var(--accent); background: transparent; }
.error { color: var(--danger); }
[hidden] { display: none !important; }
.topbar { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.toolbar { display: flex; align-items: center; justify-content: space-between; margin: 28px 0 14px; }
.toolbar p { margin: 0; }
.submission-list { display: grid; gap: 12px; }
.submission-card { width: 100%; padding: 20px; border: 1px solid var(--border); border-radius: 16px; color: inherit; text-align: left; background: rgba(19, 34, 35, .85); }
.submission-card:hover { border-color: var(--accent); background: var(--surface); }
.card-row { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.card-title { margin: 0; font-size: 18px; }
.card-meta { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.badge { flex: none; border-radius: 999px; padding: 5px 9px; color: #092b2a; background: var(--accent); font-size: 11px; font-weight: 800; text-transform: uppercase; }
dialog { width: min(720px, calc(100% - 32px)); max-height: 85vh; overflow: auto; border: 1px solid var(--border); border-radius: 18px; padding: 28px; color: inherit; background: #102021; }
dialog::backdrop { background: rgba(0, 0, 0, .7); }
.dialog-close { float: right; padding: 4px 10px; color: var(--muted); background: transparent; font-size: 24px; }
.detail-label { margin: 22px 0 6px; color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.detail-value { margin: 0; color: #d8e7e4; white-space: pre-wrap; line-height: 1.7; }
.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; border: 1px solid var(--border); border-radius: 12px; object-fit: cover; background: var(--surface); }
@media (max-width: 560px) {
  .shell { width: min(100% - 24px, 1080px); padding-top: 28px; }
  .topbar, .toolbar { align-items: stretch; flex-direction: column; }
  .topbar button, .toolbar button { width: 100%; }
  .auth-panel { padding: 24px; }
}