:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #182230;
  --muted: #5e6b7a;
  --border: #dde3ec;
  --accent: #2251ff;
  --accent-soft: #e9efff;
  --good: #0e9f6e;
  --warn: #d97706;
  --bad: #dc2626;
  --shadow: 0 10px 30px rgba(24, 34, 48, 0.08);
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.sidebar {
  background: #121927;
  color: #eef2f8;
  padding: 28px 22px;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.08);
  color: #dce7ff;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.sidebar h1 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}
.sidebar p {
  margin: 0 0 24px;
  color: #b7c2d3;
  line-height: 1.55;
}
.nav-links {
  display: grid;
  gap: 10px;
}
.nav-links a {
  padding: 12px 14px;
  border-radius: 12px;
  color: #eef2f8;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
}
.nav-links a.active,
.nav-links a:hover {
  background: rgba(34,81,255,0.28);
  border-color: rgba(123,150,255,0.45);
  text-decoration: none;
}

.content {
  padding: 28px;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}
.page-title h2 {
  margin: 0;
  font-size: 1.9rem;
}
.page-title p {
  margin: 6px 0 0;
  color: var(--muted);
  max-width: 780px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 20px;
}
.grid {
  display: grid;
  gap: 18px;
}
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.card-title h3 {
  margin: 0;
  font-size: 1.05rem;
}
.card-title p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
}
.stat-label {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 6px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  background: #edf1f8;
  color: var(--text);
}
.badge.good { background: #e7f7f0; color: var(--good); }
.badge.warn { background: #fff2e0; color: var(--warn); }
.badge.bad { background: #fee8e8; color: var(--bad); }
.badge.info { background: var(--accent-soft); color: var(--accent); }
.badge-row, .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.table {
  width: 100%;
  border-collapse: collapse;
}
.table th,
.table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.table th {
  font-size: 0.84rem;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.03em;
}

.stack { display: grid; gap: 14px; }
.muted { color: var(--muted); }
.helper-text {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}
.kv {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 8px 12px;
}
.kv dt {
  color: var(--muted);
  font-size: 0.92rem;
}
.kv dd {
  margin: 0;
  font-weight: 600;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
label {
  display: grid;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--muted);
}
input, select, textarea, button {
  font: inherit;
}
input, select, textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
}
textarea { min-height: 120px; resize: vertical; }
button,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}
.button-link:hover { text-decoration: none; }
.button-link.primary { background: var(--accent); color: #fff; }
.button-link.secondary,
button.secondary { background: #e7edf7; color: var(--text); }
button.warn { background: #f59e0b; }
button.bad { background: var(--bad); }
button:disabled { opacity: 0.65; cursor: wait; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.notice,
.callout {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #f9fbff;
}
.notice.error, .callout.bad { border-color: #fecaca; background: #fff1f2; color: #991b1b; }
.notice.success, .callout.good { border-color: #bbf7d0; background: #f0fdf4; color: #166534; }
.callout.warn { border-color: #fde68a; background: #fffbeb; color: #92400e; }
.callout.info { border-color: #c7d7ff; background: #f5f8ff; color: #2348c8; }
.callout h3, .notice h3 { margin: 0 0 8px; }
.callout p, .notice p { margin: 6px 0 0; }
.empty-state {
  padding: 16px;
  border: 1px dashed var(--border);
  border-radius: 16px;
  color: var(--muted);
  background: #fafcff;
}
.subheading {
  margin: 14px 0 8px;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--muted);
  text-transform: uppercase;
}
.detail-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}
.timeline {
  display: grid;
  gap: 14px;
}
.timeline-item {
  border-left: 3px solid var(--border);
  padding-left: 16px;
}
.timeline-item strong { display: block; margin-bottom: 4px; }
.timeline-item time { color: var(--muted); font-size: 0.9rem; }

.hero {
  display: grid;
  gap: 16px;
  grid-template-columns: 1.4fr 1fr;
}
.hero-copy h2 { margin: 0; font-size: 2.1rem; }
.hero-copy p { color: var(--muted); line-height: 1.6; }
.hero-highlights {
  display: grid;
  gap: 12px;
  margin-top: 10px;
}
.hero-highlights .notice { background: #fff; }

.stage-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}
.stage-step {
  display: grid;
  gap: 8px;
  padding: 14px;
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--border);
  color: var(--muted);
}
.stage-step span {
  display: inline-flex;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  align-items: center;
  justify-content: center;
  background: #eef3fb;
  color: var(--text);
  font-weight: 700;
}
.stage-step.done {
  border-color: #bbf7d0;
  background: #f0fdf4;
  color: var(--good);
}
.stage-step.active {
  border-color: #c7d7ff;
  background: #f5f8ff;
  color: var(--accent);
}

.agent-grid,
.source-list {
  display: grid;
  gap: 14px;
}
.agent-card,
.source-card {
  padding: 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #fff;
}
.agent-card h4,
.source-card h4 {
  margin: 12px 0 8px;
}
.source-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

@media (max-width: 980px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { padding-bottom: 12px; }
  .content { padding: 18px; }
  .grid-2, .grid-3, .grid-4, .hero, .form-grid, .stage-strip { grid-template-columns: 1fr; }
}

.compact-kv {
  grid-template-columns: 140px 1fr;
}

.option-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.option-card,
.agent-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  background: #fff;
}

.option-card.recommended {
  border-color: rgba(34, 81, 255, 0.35);
  box-shadow: 0 8px 24px rgba(34, 81, 255, 0.08);
}

.agent-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.source-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.source-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  background: #fff;
}

.source-card h4 {
  margin: 10px 0 8px;
}

.source-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}