:root {
  --bg: #0b1020;
  --panel: #141a30;
  --panel2: #1c2340;
  --text: #e8ecff;
  --muted: #9aa3c7;
  --accent: #5ad1ff;
  --good: #4cdf8f;
  --bad: #ff6b6b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 24px 32px;
  border-bottom: 1px solid #232b4a;
  background: linear-gradient(180deg, #101735, var(--bg));
}
header h1 { margin: 0; letter-spacing: 1px; }
.tagline { margin: 4px 0 0; color: var(--muted); }

main { padding: 24px 32px; max-width: 1200px; margin: 0 auto; }

.upload-zone {
  border: 2px dashed #3a4470;
  border-radius: 12px;
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
}
.upload-zone.dragover { border-color: var(--accent); background: #121a3a; }
.upload-zone p { margin: 8px 0; }
.hint { color: var(--muted); font-size: 14px; }
.file-label {
  color: var(--accent);
  text-decoration: underline;
  cursor: pointer;
}

.hidden { display: none !important; }

.status { display: flex; align-items: center; gap: 12px; padding: 16px 0; color: var(--muted); }
.spinner {
  width: 18px; height: 18px;
  border: 3px solid #3a4470;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.failed { padding: 16px; border-radius: 8px; background: #2a1620; border: 1px solid #5a2a2a; color: var(--bad); }

.results { display: flex; gap: 24px; align-items: flex-start; flex-wrap: wrap; }

.viewer { flex: 1 1 620px; min-width: 320px; }
.image-wrap { position: relative; overflow: hidden; border-radius: 8px; border: 1px solid #232b4a; }
.image-wrap img { display: block; width: 100%; height: auto; }
#overlay { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }

.controls { display: flex; gap: 20px; margin-top: 12px; color: var(--muted); font-size: 14px; align-items: center; }
.export-btn {
  margin-left: auto;
  background: var(--accent);
  color: #0b1020;
  border: none;
  border-radius: 6px;
  padding: 8px 14px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}
.export-btn:hover { filter: brightness(1.1); }

.panel { flex: 0 1 340px; background: var(--panel); border: 1px solid #232b4a; border-radius: 8px; padding: 16px 20px; }
.panel h2 { font-size: 15px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin: 18px 0 8px; }
.panel h2:first-child { margin-top: 0; }
dl { margin: 0; }
dt { color: var(--muted); font-size: 13px; margin-top: 8px; }
dd { margin: 2px 0 0; font-size: 14px; }

.history { margin-top: 32px; }
.history ul { list-style: none; padding: 0; }
.history li { padding: 8px 12px; margin: 6px 0; background: var(--panel); border-radius: 6px; cursor: pointer; }
.history li:hover { background: var(--panel2); }