:root {
  --bg: #0d1117;
  --panel: #151b24;
  --panel-soft: #1c2431;
  --text: #e8edf4;
  --muted: #97a8be;
  --accent: #59b7ff;
  --accent-soft: #203a57;
  --success: #41d991;
  --warn: #ffc96b;
  --danger: #ff7d7d;
  --border: #2b3645;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  background: radial-gradient(circle at 20% -10%, #1a2b40 0%, var(--bg) 45%);
  color: var(--text);
}

.app-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  gap: 18px;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(21, 27, 36, 0.85);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 18px;
  backdrop-filter: blur(8px);
}

.brand {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.tagline {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 10px;
  transition: background-color 0.2s ease;
}

.nav-links a:hover {
  background: var(--panel-soft);
}

.hero,
.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.01), rgba(255, 255, 255, 0.005)), var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.25);
}

.hero {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 18px;
  padding: 26px;
}

.hero h1 {
  margin: 12px 0;
  font-size: clamp(1.5rem, 2.4vw, 2.2rem);
}

.hero-copy {
  color: var(--muted);
  margin: 0;
  max-width: 66ch;
  line-height: 1.55;
}

.status-pill {
  display: inline-block;
  margin: 0;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
}

.hero-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.metric {
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.metric span {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
}

.metric small {
  color: var(--muted);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(120px, 1fr));
  gap: 12px;
}

.card {
  padding: 16px;
}

.card h2,
.card h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.kpi-grid .card p {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 700;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

input,
select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: #0f151d;
  color: var(--text);
}

input:focus,
select:focus {
  outline: 2px solid rgba(89, 183, 255, 0.25);
}

.result-count,
.muted {
  color: var(--muted);
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 12px;
}

.chart {
  min-height: 180px;
  display: flex;
  align-items: end;
  gap: 8px;
  padding-top: 8px;
}

.bar-wrap {
  flex: 1;
  text-align: center;
  font-size: 0.72rem;
  color: var(--muted);
}

.bar {
  width: 100%;
  border-radius: 8px 8px 0 0;
  min-height: 2px;
  background: linear-gradient(180deg, #8ed0ff, #3d86c8);
  transition: opacity 0.2s ease;
}

.bar:hover {
  opacity: 0.8;
}

.scatter-chart {
  width: 100%;
  min-height: 180px;
  background: #0f151d;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.dot {
  fill: var(--accent);
  fill-opacity: 0.65;
}

.axis {
  stroke: #6f8097;
  stroke-width: 1;
}

.books {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.book-card,
.pick-item {
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.book-card h3,
.pick-item h4 {
  margin: 0 0 8px;
  font-size: 0.94rem;
}

.book-meta {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.book-card a,
.pick-item a {
  display: inline-block;
  text-decoration: none;
  color: var(--text);
  background: #205487;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.8rem;
}

.book-card a:hover,
.pick-item a:hover {
  background: #2b6ca7;
}

.smart-picks .pick-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 12px;
}

.pick-list {
  display: grid;
  gap: 8px;
}

.insight-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

.pipeline {
  margin-top: 12px;
  display: grid;
  gap: 8px;
  justify-items: center;
}

.pipeline > div {
  width: min(420px, 100%);
  text-align: center;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
}

.pipeline span {
  color: var(--muted);
}

.empty-state {
  text-align: center;
  color: var(--warn);
}

.good {
  color: var(--success);
}

.bad {
  color: var(--danger);
}

@media (max-width: 1024px) {
  .kpi-grid {
    grid-template-columns: repeat(3, minmax(120px, 1fr));
  }

  .hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .app-shell {
    padding: 14px;
  }

  .navbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .kpi-grid,
  .controls-grid,
  .chart-grid,
  .smart-picks .pick-grid {
    grid-template-columns: 1fr;
  }
}