:root {
  --bg: #0f1419;
  --card: #1a222c;
  --card-2: #212b37;
  --border: #2b3645;
  --text: #e6edf3;
  --muted: #8b96a3;
  --accent: #4fa3ff;
  --danger: #ff5c5c;
  --warn: #ffb648;
  --ok: #4ad9a0;
}

* { box-sizing: border-box; }

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

header {
  padding: 2.5rem 1.5rem 1.5rem;
  text-align: center;
}

header h1 {
  margin: 0 0 0.3rem;
  font-size: 1.9rem;
}

header p {
  margin: 0;
  color: var(--muted);
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.upload-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 2.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: rgba(79, 163, 255, 0.06);
}

.dropzone p { margin: 0.2rem 0; }
.dropzone .hint { color: var(--muted); font-size: 0.85rem; }

#preview {
  display: block;
  max-width: 100%;
  max-height: 280px;
  margin: 1rem auto;
  border-radius: 8px;
  border: 1px solid var(--border);
}

button {
  width: 100%;
  margin-top: 1rem;
  padding: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #06111c;
  cursor: pointer;
  transition: opacity 0.2s;
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.error {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 92, 92, 0.12);
  border: 1px solid var(--danger);
  border-radius: 8px;
  color: var(--danger);
}

.loading {
  margin-top: 1rem;
  text-align: center;
  color: var(--muted);
}

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-left: 6px;
}

@keyframes spin { to { transform: rotate(360deg); } }

#resultsSection {
  margin-top: 2rem;
}

.verdict-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
}

.verdict-card h2 {
  margin: 0 0 0.6rem;
}

.verdict-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.8rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.badge {
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.8rem;
}

.badge.high { background: rgba(255, 92, 92, 0.15); color: var(--danger); }
.badge.medium { background: rgba(255, 182, 72, 0.15); color: var(--warn); }
.badge.low { background: rgba(74, 217, 160, 0.15); color: var(--ok); }

.verdict-note {
  margin: 1rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  text-align: left;
}

.role-tag {
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.role-tag.primary { background: rgba(79, 163, 255, 0.15); color: var(--accent); }
.role-tag.supporting { background: rgba(139, 150, 163, 0.15); color: var(--muted); }

.method-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.method-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.2rem;
}

.method-box h3 { margin: 0 0 0.4rem; color: var(--accent); }
.method-desc { margin: 0; color: var(--muted); font-size: 0.88rem; line-height: 1.4; }

.methodology-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  line-height: 1.5;
}

.channel-tabs {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.channel-tab {
  padding: 0.45rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card-2);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.85rem;
}

.channel-tab.active {
  background: var(--accent);
  color: #06111c;
  border-color: var(--accent);
}

.charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.chart-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
}

.chart-box h4 { margin: 0 0 0.6rem; font-size: 0.95rem; color: var(--muted); }

.table-wrap {
  margin-top: 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  overflow-x: auto;
}

.table-wrap h4 { margin: 0 0 0.8rem; color: var(--muted); font-size: 0.95rem; }

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { padding: 0.5rem 0.6rem; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }

.pill { padding: 0.15rem 0.6rem; border-radius: 999px; font-size: 0.78rem; font-weight: 600; }
.pill.yes { background: rgba(255, 92, 92, 0.15); color: var(--danger); }
.pill.no { background: rgba(74, 217, 160, 0.15); color: var(--ok); }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  padding: 1.5rem;
}

@media (max-width: 700px) {
  .method-compare, .charts { grid-template-columns: 1fr; }
}