:root {
  --bg: #0f1115;
  --panel: #181b22;
  --panel-2: #1f232c;
  --line: #2a2f3a;
  --text: #e7e9ee;
  --muted: #8a93a6;
  --accent: #5eead4;
  --accent-2: #38bdf8;
  --ok: #4ade80;
  --warn: #facc15;
  --bad: #ef4444;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 20% 0%, #1a2230 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

header {
  padding: 48px 24px 16px;
  text-align: center;
  max-width: 980px;
  margin: 0 auto;
}
header h1 {
  font-size: 32px;
  margin: 0 0 6px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.sub { color: var(--muted); margin: 0; }

main {
  max-width: 980px;
  margin: 24px auto;
  padding: 0 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
}
.card h2 { margin: 0 0 14px; font-size: 18px; }
.hidden { display: none !important; }

/* Tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin: -8px -8px 18px; padding: 0 8px; }
.tab {
  background: transparent; color: var(--muted); border: 0;
  padding: 10px 16px; cursor: pointer; font-size: 14px;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

/* Dropzone */
.dropzone {
  border: 2px dashed var(--line);
  border-radius: 12px;
  padding: 28px;
  text-align: center;
  transition: border-color .15s, background .15s;
  cursor: pointer;
}
.dropzone.drag { border-color: var(--accent); background: rgba(94,234,212,0.05); }
.dz-inner p { margin: 4px 0; }
.dz-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--panel-2);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 10px;
}
.muted { color: var(--muted); font-size: 13px; }
.small { font-size: 12px; }

/* URL row */
.url-row { margin: 10px 0 4px; }
.url-row input[type="url"] {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-family: ui-monospace, "JetBrains Mono", monospace;
}
.url-row input[type="url"]:focus {
  outline: none;
  border-color: var(--accent);
}

.actions {
  display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap;
}

button {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
  padding: 10px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: background .15s, border-color .15s, transform .05s;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: 0.4; cursor: not-allowed; }
button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06121a;
  border: 0;
  font-weight: 600;
}
button.ghost { background: transparent; }

#filemeta { margin-top: 12px; }

/* Key-value box */
.kv {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 6px 14px;
  font-size: 14px;
  font-family: ui-monospace, "JetBrains Mono", monospace;
  background: var(--panel-2);
  padding: 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  margin: 10px 0;
}
.kv .k { color: var(--muted); }

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.badge.ok { background: rgba(74,222,128,0.15); color: var(--ok); }
.badge.minor, .badge.moderate { background: rgba(250,204,21,0.15); color: var(--warn); }
.badge.severe, .badge.fatal { background: rgba(239,68,68,0.15); color: var(--bad); }

.diag-list { padding-left: 18px; margin: 8px 0; }
.diag-list li { margin: 4px 0; }

/* Per-attempt card */
.attempt {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px;
  margin: 10px 0;
  background: var(--panel-2);
}
.attempt header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0; margin: 0 0 8px;
  font-weight: 600;
  text-align: left;
}
.attempt .meta { font-size: 13px; color: var(--muted); margin: 4px 0; }
.attempt .preview { margin-top: 10px; }
.attempt .preview img {
  max-width: 100%;
  max-height: 240px;
  border-radius: 6px;
  border: 1px solid var(--line);
  display: block;
}
.attempt .dlrow {
  margin-top: 8px;
  display: flex; gap: 8px; align-items: center;
}
.attempt .dlrow a {
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
}
.attempt .dlrow a:hover { text-decoration: underline; }

/* Batch */
.batch-row {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) 100px 1fr 100px 100px;
  gap: 12px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  margin: 6px 0;
  background: var(--panel-2);
}
.batch-row .name { font-family: ui-monospace, monospace; font-size: 13px; word-break: break-all; }
.batch-row .strategy { font-size: 12px; color: var(--muted); }
.batch-row .actions-cell { display: flex; gap: 6px; justify-content: flex-end; }
.batch-row .actions-cell a, .batch-row .actions-cell button {
  font-size: 12px; padding: 6px 10px;
}
.batch-row .actions-cell a {
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 10px;
}
.batch-row.detail {
  display: block;
  background: var(--bg);
  margin-top: -6px;
  border-top: 0;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  padding: 14px;
}

.spinner {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Progress bar */
#progressBar {
  height: 8px;
  background: var(--panel-2);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 8px;
}
#progressFill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .25s;
}

footer {
  text-align: center;
  padding: 30px 16px 50px;
}