:root {
  --bg-1: #f6f2e8;
  --bg-2: #dce7ef;
  --ink: #1e2930;
  --muted: #4c5e66;
  --card: rgba(255, 252, 247, 0.86);
  --line: rgba(30, 41, 48, 0.16);
  --accent: #c75d2c;
  --accent-2: #116a75;
  --choice: #214f83;
  --good: #0f7a41;
  --warn: #aa4b18;
  --bad: #a0192f;
  --shadow: 0 14px 40px rgba(25, 37, 46, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 7% 10%, rgba(199, 93, 44, 0.15), transparent 32%),
    radial-gradient(circle at 88% 17%, rgba(17, 106, 117, 0.18), transparent 30%),
    linear-gradient(135deg, var(--bg-1), var(--bg-2));
}

.ambient {
  position: fixed;
  z-index: 0;
  pointer-events: none;
  border-radius: 999px;
  filter: blur(42px);
  opacity: 0.2;
  animation: float 12s ease-in-out infinite;
}

.ambient-a {
  width: 360px;
  height: 360px;
  background: #d17e2e;
  top: -110px;
  right: -110px;
}

.ambient-b {
  width: 340px;
  height: 340px;
  background: #1d8794;
  bottom: -140px;
  left: -110px;
  animation-delay: 2s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px) scale(1);
  }
  50% {
    transform: translateY(16px) scale(1.04);
  }
}

.topbar,
.layout,
.footer {
  position: relative;
  z-index: 1;
}

.topbar {
  max-width: 1240px;
  margin: 0 auto;
  padding: 2rem 1.4rem 1.2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.73rem;
  color: var(--muted);
}

h1,
h2,
h3 {
  margin: 0;
}

h1 {
  margin-top: 0.2rem;
  font-size: clamp(1.7rem, 2.7vw, 2.5rem);
}

h2 {
  font-size: 1.2rem;
}

h3 {
  font-size: 0.96rem;
  margin-top: 1.1rem;
}

.meta-pill {
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  font-size: 0.9rem;
}

.layout {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0.6rem 1.4rem 1.2rem;
  display: grid;
  grid-template-columns: 1.2fr 0.95fr 1fr;
  gap: 1rem;
}

.card {
  background: var(--card);
  backdrop-filter: blur(4px);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.page-label {
  margin: 0.85rem 0 0.5rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.page-content {
  margin: 0;
  line-height: 1.55;
  font-family: "Literata", Georgia, serif;
  white-space: pre-wrap;
  min-height: 160px;
}

.path-row {
  margin-top: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.path-row label {
  font-size: 0.88rem;
  color: var(--muted);
}

.choice-list {
  margin: 0.55rem 0 0;
  padding-left: 1rem;
}

.choice-list li {
  margin: 0.42rem 0;
}

.choice-list button {
  width: 100%;
  text-align: left;
  background: rgba(33, 79, 131, 0.09);
  border-color: rgba(33, 79, 131, 0.3);
}

.path-display {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.45;
}

.stat-grid {
  margin-top: 0.9rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
}

.stat-grid > div {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.5rem;
  background: rgba(255, 255, 255, 0.62);
}

.stat-label {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-value {
  margin: 0.2rem 0 0;
  font-size: 1.3rem;
  font-weight: 700;
}

.adjacency {
  margin-top: 0.9rem;
}

.adjacency-text {
  margin: 0.32rem 0 0;
  font-size: 0.93rem;
  color: var(--ink);
}

.validation {
  margin-top: 0.7rem;
  font-size: 0.92rem;
  color: var(--warn);
}

.graph-preview {
  margin-top: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #ffffff;
  overflow: auto;
  max-height: 290px;
}

.graph-preview img {
  display: block;
  width: 100%;
  min-width: 360px;
}

.local-badge {
  border: 1px solid rgba(15, 122, 65, 0.38);
  color: var(--good);
  background: rgba(15, 122, 65, 0.08);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
  font-size: 0.78rem;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

.stack {
  display: grid;
  gap: 0.45rem;
}

.inline-controls {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

button,
input,
textarea {
  font: inherit;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.55rem 0.62rem;
  background: rgba(255, 255, 255, 0.88);
}

textarea {
  resize: vertical;
  min-height: 90px;
}

button {
  border: 1px solid rgba(30, 41, 48, 0.24);
  background: linear-gradient(180deg, #f8f9fa, #eceff2);
  color: var(--ink);
  border-radius: 10px;
  padding: 0.5rem 0.7rem;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 12px rgba(30, 41, 48, 0.12);
}

button:active {
  transform: translateY(0);
}

button.ghost {
  background: rgba(255, 255, 255, 0.5);
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1rem 0;
}

.footer {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0.4rem 1.4rem 2rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.reveal-1,
.reveal-2,
.reveal-3,
.reveal-4 {
  opacity: 0;
  transform: translateY(8px);
  animation: reveal 420ms ease forwards;
}

.reveal-2 { animation-delay: 100ms; }
.reveal-3 { animation-delay: 180ms; }
.reveal-4 { animation-delay: 260ms; }

@keyframes reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: 1fr 1fr;
  }

  .authoring {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .topbar {
    padding-top: 1.4rem;
  }

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

  .card {
    padding: 0.9rem;
  }

  .graph-preview img {
    min-width: 260px;
  }
}