:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --panel: #ffffff;
  --ink: #102033;
  --muted: #5b6b7d;
  --accent: #1451d8;
  --border: #dbe4ef;
  --shadow: 0 18px 40px rgba(16, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(20, 81, 216, 0.12), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
  color: var(--ink);
}

.layout {
  width: min(1200px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.hero {
  padding: 1.5rem 0 1rem;
}

.hero-about {
  padding-bottom: 1.5rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.05;
}

.lede {
  max-width: 60rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-top: 1.25rem;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

button,
a {
  font: inherit;
}

button,
.button-link {
  border: 1px solid var(--border);
  background: #f6f8fc;
  color: var(--ink);
  border-radius: 12px;
  padding: 0.7rem 1rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

button.primary,
.button-link {
  background: linear-gradient(90deg, var(--accent), #2d7ef7);
  color: white;
  border-color: transparent;
}

.button-link.secondary {
  background: #f6f8fc;
  color: var(--ink);
  border-color: var(--border);
}

textarea,
.response {
  width: 100%;
  min-height: 320px;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92rem;
  line-height: 1.5;
  background: #0f172a;
  color: #d8e3ff;
  overflow: auto;
}

.hint {
  color: var(--muted);
  margin-bottom: 0;
}

.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}

.summary-tile {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0.9rem;
  background: linear-gradient(180deg, #ffffff, #f7fbff);
}

.summary-tile strong {
  display: block;
  font-size: 1.2rem;
  margin-top: 0.25rem;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.info-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1rem;
  background: linear-gradient(180deg, #ffffff, #f7fbff);
}

.info-card h3 {
  margin-top: 0;
}

.compact {
  max-width: none;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1rem;
  background: #fbfdff;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.metric {
  color: var(--muted);
  margin: 0.25rem 0;
}

.layout-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1rem;
}

.viz-panel {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.75rem;
  background: #fff;
}

.viz-panel h4 {
  margin: 0 0 0.6rem;
}

.viz-panel-wide {
  min-width: 0;
}

.viz-panel svg {
  width: 100%;
  height: auto;
  background: #f8fbff;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.viz-button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}

.viz-button svg {
  transition: transform 0.15s ease;
}

.viz-button:hover svg {
  transform: scale(1.015);
}

.container-outline {
  fill: none;
  stroke: #0f172a;
  stroke-width: 2;
  stroke-dasharray: 6 4;
}

.legend {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.viz-modal {
  position: fixed;
  inset: 0;
  z-index: 50;
}

.viz-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.72);
}

.viz-modal-dialog {
  position: relative;
  width: min(92vw, 1100px);
  margin: 5vh auto 0;
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.3);
  padding: 1rem;
}

.viz-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.viz-modal-close {
  border: 1px solid var(--border);
  background: #f6f8fc;
  color: var(--ink);
}

.viz-modal-body svg {
  width: 100%;
  height: auto;
  max-height: 78vh;
  background: #f8fbff;
  border: 1px solid var(--border);
  border-radius: 16px;
}

@media (max-width: 720px) {
  .panel-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .actions {
    width: 100%;
    flex-direction: column;
  }

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