:root {
  color-scheme: light;
  --ink: #11120f;
  --muted: #56584a;
  --paper: #f8f4ef;
  --accent: #f0714b;
  --accent-dark: #c34c2c;
  --panel: #fffaf2;
  --border: rgba(17, 18, 15, 0.12);
  --grid: rgba(17, 18, 15, 0.05);
  --shadow: 0 25px 60px rgba(17, 18, 15, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 20%, rgba(240, 113, 75, 0.12), transparent 55%),
    radial-gradient(circle at 80% 10%, rgba(168, 201, 168, 0.2), transparent 50%),
    var(--paper);
  min-height: 100vh;
}

.page {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
  padding: 24px 24px 32px;
  gap: 16px;
}

.top-bar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 1rem;
  margin: 0 0 12px;
  color: var(--muted);
}

.home-link {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.home-link:hover {
  color: var(--accent-dark);
}

.logo-node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  border-radius: 10px;
  background: #3b7dd8;
  border: 1px solid #2f67b3;
  color: #fff;
  letter-spacing: 0.08em;
}

.home-link:hover .logo-node {
  background: #d94b60;
  border-color: #b83b4d;
  color: #fff;
}

.logo-text {
  font-weight: 700;
  color: var(--ink);
}

h1 {
  font-family: "Instrument Serif", serif;
  font-size: clamp(2rem, 2.8vw, 2.8rem);
  line-height: 1.05;
  margin: 0;
}

.top-meta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.top-link {
  color: var(--accent-dark);
  font-weight: 600;
  text-decoration: none;
}

.top-link:hover {
  text-decoration: underline;
}

.workspace {
  display: grid;
  grid-template-rows: minmax(70vh, 1.2fr) auto;
  gap: 16px;
  min-height: 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.sample-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.sample-link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.sample-link:hover {
  color: var(--accent-dark);
  border-bottom-color: var(--accent-dark);
}

.panel-header h2 {
  font-family: "Instrument Serif", serif;
  margin: 0;
  font-size: 1.6rem;
}

.controls {
  display: flex;
  gap: 12px;
  align-items: center;
}

.controls label {
  display: grid;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--muted);
}

.controls input {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 6px 8px;
  font-size: 0.9rem;
}

textarea {
  flex: 1;
  resize: none;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 12px 14px;
  font-family: "Manrope", sans-serif;
  font-size: 0.95rem;
  background: #fff;
  box-shadow: inset 0 1px 0 rgba(17, 18, 15, 0.04);
  min-height: 120px;
}

.panel-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

button {
  border: none;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 24px rgba(240, 113, 75, 0.28);
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 30px rgba(240, 113, 75, 0.35);
}

#stats {
  font-size: 0.8rem;
  color: var(--muted);
}

.viz {
  position: relative;
  min-height: 0;
  flex: 1;
}

.hint {
  margin: 4px 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

#graph {
  flex: 1;
  min-height: 70vh;
  border-radius: 18px;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.6)),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 24px,
      var(--grid) 24px,
      var(--grid) 25px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 24px,
      var(--grid) 24px,
      var(--grid) 25px
    );
  overflow: hidden;
  min-height: 0;
  position: relative;
}

svg {
  width: 100%;
  height: 100%;
}

.edge {
  stroke: rgba(17, 18, 15, 0.4);
  stroke-width: 1.5px;
}

.node text {
  font-size: 1.05rem;
  font-weight: 600;
  pointer-events: none;
}

.node rect {
  stroke-width: 1.5px;
}

.tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(17, 18, 15, 0.9);
  color: #fff;
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 0.8rem;
  transform: translate(-50%, -120%);
  opacity: 0;
  transition: opacity 0.12s ease;
  white-space: nowrap;
}

@media (max-width: 960px) {
  .top-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .controls {
    flex-wrap: wrap;
  }
}