:root {
  color-scheme: dark;
  --ink: #eef2ff;
  --muted: #a8b1cc;
  --surface: #171d31;
  --surface-soft: #202943;
  --line: #344160;
  --accent: #7c9cff;
  --accent-strong: #9fb2ff;
  --good: #57d9aa;
  --warn: #ffc86b;
  --danger: #ff8e9b;
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: radial-gradient(circle at top left, #26345f 0, #0e1220 46rem);
  font: 16px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell { width: min(760px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 52px; }
.shell.wide { width: min(1080px, calc(100% - 32px)); }

.topbar, .section-heading, .actions, .meta { display: flex; align-items: center; gap: 14px; }
.topbar, .section-heading { justify-content: space-between; }
.topbar { margin-bottom: 18px; }

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(1.7rem, 5vw, 2.3rem); letter-spacing: -0.04em; }
h2 { margin-bottom: 8px; font-size: 1.25rem; letter-spacing: -0.025em; }
.eyebrow { margin-bottom: 3px; color: var(--accent-strong); font-size: .75rem; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.muted { color: var(--muted); }

.card {
  margin: 14px 0;
  padding: 22px;
  border: 1px solid color-mix(in srgb, var(--line), transparent 25%);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface), transparent 8%);
  box-shadow: 0 20px 50px rgb(0 0 0 / 18%);
}

.hero { border-color: color-mix(in srgb, var(--accent), transparent 45%); background: linear-gradient(135deg, #202d54, var(--surface)); }
.badge { display: inline-flex; align-items: center; min-height: 30px; padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--accent-strong); background: #10162a; font-size: .85rem; white-space: nowrap; }
.meta { flex-wrap: wrap; color: var(--muted); font-size: .9rem; }
.meta span { padding: 3px 8px; border-radius: 999px; background: rgb(255 255 255 / 6%); }

.field { display: grid; gap: 8px; margin-top: 12px; color: var(--muted); font-size: .9rem; }
textarea {
  width: 100%;
  resize: vertical;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: none;
  color: var(--ink);
  background: #10162a;
  font: inherit;
}
textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgb(124 156 255 / 18%); }

button, .button-link {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: 11px;
  color: #0e1220;
  background: var(--accent);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
}
button:hover, .button-link:hover { background: var(--accent-strong); }
button:disabled { cursor: wait; opacity: .6; }
.secondary { border-color: var(--line); color: var(--ink); background: transparent; }
.secondary:hover { background: var(--surface-soft); }
.danger { border-color: color-mix(in srgb, var(--danger), transparent 50%); color: var(--danger); background: transparent; }

.actions { flex-wrap: wrap; margin-top: 16px; }
.file-picker { display: inline-flex; margin-top: 14px; }
.file-picker input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.file-picker span { padding: 9px 12px; border: 1px dashed var(--line); border-radius: 10px; color: var(--accent-strong); cursor: pointer; }

.file-list, .submission-list, .review-list { display: grid; gap: 10px; padding: 0; list-style: none; }
.file-list { margin: 12px 0 0; }
.file-item, .submission, .review-item { padding: 13px; border: 1px solid var(--line); border-radius: 12px; background: rgb(10 15 30 / 32%); }
.file-item { display: flex; justify-content: space-between; gap: 12px; }
.file-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.submission h3, .review-item h3 { margin: 0 0 4px; font-size: 1rem; }
.status-review { color: var(--warn); }
.status-auto_pass, .status-manual_pass { color: var(--good); }
.status-needs_revision { color: var(--danger); }

.review-answer { max-height: 230px; overflow: auto; margin: 12px 0; padding: 12px; border-radius: 10px; background: #0c1120; white-space: pre-wrap; }
.review-controls { display: grid; grid-template-columns: minmax(70px, 100px) 1fr auto auto; gap: 8px; align-items: end; }
.review-controls label { display: grid; gap: 4px; color: var(--muted); font-size: .8rem; }
.review-controls input, .review-controls textarea { min-height: 40px; padding: 8px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); background: #10162a; font: inherit; }
.review-controls textarea { min-height: 42px; resize: vertical; }

@media (max-width: 650px) {
  .shell { width: min(100% - 20px, 760px); padding-top: 16px; }
  .card { padding: 16px; border-radius: 14px; }
  .topbar, .section-heading { align-items: flex-start; flex-direction: column; }
  .review-controls { grid-template-columns: 1fr 1fr; }
  .review-controls textarea { grid-column: 1 / -1; }
}