:root {
  --bg: #efe5d6;
  --bg-deep: #e4d4bf;
  --paper: rgba(255, 250, 240, 0.92);
  --paper-strong: #f7efdf;
  --ink: #251a13;
  --muted: #6a594b;
  --line: rgba(117, 91, 64, 0.18);
  --accent: #975a2d;
  --accent-soft: #ecd6bc;
  --accent-deep: #72401b;
  --danger: #7b3a31;
  --shadow: 0 22px 44px rgba(58, 37, 18, 0.12);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(151, 90, 45, 0.11), transparent 28%),
    radial-gradient(circle at top right, rgba(37, 26, 19, 0.08), transparent 24%),
    linear-gradient(180deg, #f4ebde 0%, var(--bg) 56%, var(--bg-deep) 100%);
}

a {
  color: inherit;
}

.shell {
  width: min(1440px, calc(100vw - 28px));
  margin: 24px auto 56px;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
  margin-bottom: 18px;
}

.panel,
.fold-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  backdrop-filter: blur(8px);
}

.panel-header {
  padding: 16px 18px 14px;
  background:
    linear-gradient(135deg, rgba(236, 214, 188, 0.9), rgba(255, 250, 240, 0.92)),
    linear-gradient(90deg, rgba(151, 90, 45, 0.12), transparent);
  border-bottom: 1px solid rgba(117, 91, 64, 0.14);
}

.panel-body {
  padding: 18px;
}

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
}

h1 {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.1;
}

h2 {
  font-size: 22px;
  line-height: 1.18;
}

h3 {
  font-size: 17px;
  line-height: 1.3;
}

h4 {
  font-size: 15px;
  line-height: 1.35;
}

p {
  margin: 0;
  line-height: 1.8;
}

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

.badge-row,
.toolbar,
.chip-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.toolbar {
  margin: 0 0 18px;
}

.toolbar button,
.route-link {
  appearance: none;
  border: 1px solid rgba(151, 90, 45, 0.22);
  background: linear-gradient(180deg, rgba(255, 250, 240, 0.98), rgba(236, 214, 188, 0.82));
  color: var(--accent-deep);
  border-radius: 999px;
  padding: 9px 14px;
  font: inherit;
  cursor: pointer;
  text-decoration: none;
}

.action-button,
.ghost-button {
  appearance: none;
  border-radius: 14px;
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
}

.action-button {
  border: 1px solid rgba(151, 90, 45, 0.22);
  background: linear-gradient(180deg, rgba(151, 90, 45, 0.96), rgba(114, 64, 27, 0.96));
  color: #fffaf2;
}

.ghost-button {
  border: 1px solid rgba(151, 90, 45, 0.18);
  background: rgba(255, 250, 240, 0.92);
  color: var(--accent-deep);
}

.action-button:disabled,
.ghost-button:disabled,
.toolbar button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.chip,
.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  border: 1px solid rgba(151, 90, 45, 0.14);
}

.meta-grid,
.two-col,
.three-col,
.route-grid,
.pc-grid {
  display: grid;
  gap: 16px;
}

.meta-grid,
.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.route-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pc-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.layout {
  display: grid;
  grid-template-columns: 420px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.stack,
.timeline {
  display: grid;
  gap: 18px;
}

.subcard {
  padding: 16px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255, 252, 245, 0.96), rgba(247, 239, 223, 0.78));
  border: 1px solid rgba(117, 91, 64, 0.12);
}

.label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 7px;
}

.bullet-list {
  margin: 0;
  padding-left: 20px;
  line-height: 1.75;
}

.bullet-list li {
  margin-bottom: 8px;
}

.quote {
  margin: 12px 0;
  padding: 14px 16px 14px 18px;
  border-left: 4px solid rgba(151, 90, 45, 0.38);
  background: rgba(255, 250, 240, 0.88);
  line-height: 1.75;
}

.chat-bubble {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(117, 91, 64, 0.14);
  background: rgba(255, 250, 240, 0.96);
  line-height: 1.72;
}

.chat-bubble.player {
  background: linear-gradient(135deg, rgba(236, 214, 188, 0.82), rgba(255, 250, 240, 0.98));
}

.chat-bubble.assistant {
  background: linear-gradient(135deg, rgba(243, 235, 222, 0.95), rgba(255, 250, 240, 0.98));
}

.role {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.code-block,
textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(117, 91, 64, 0.14);
  background: #fffdf8;
  color: var(--ink);
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 13px;
  line-height: 1.58;
}

.code-block {
  margin: 0;
  padding: 14px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

textarea {
  padding: 14px;
  min-height: 280px;
  resize: vertical;
}

input[type="text"],
input[type="number"],
select {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(117, 91, 64, 0.14);
  background: #fffdf8;
  color: var(--ink);
  font: inherit;
  padding: 10px 12px;
}

.route-card {
  display: block;
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 252, 245, 0.95), rgba(247, 239, 223, 0.78));
  border: 1px solid rgba(117, 91, 64, 0.12);
  text-decoration: none;
}

.route-card h3 {
  margin-bottom: 10px;
}

.route-card p {
  color: var(--muted);
}

.route-path {
  margin-top: 12px;
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 12px;
  color: var(--accent-deep);
  word-break: break-all;
}

details.fold-card summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background:
    linear-gradient(135deg, rgba(236, 214, 188, 0.78), rgba(255, 250, 240, 0.92)),
    linear-gradient(90deg, rgba(151, 90, 45, 0.10), transparent);
}

details.fold-card summary::-webkit-details-marker {
  display: none;
}

.summary-copy {
  display: grid;
  gap: 4px;
}

.summary-meta {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.summary-title {
  font-size: 18px;
  line-height: 1.2;
}

.summary-toggle {
  min-width: 80px;
  text-align: right;
  color: var(--accent-deep);
  font-size: 13px;
}

details.fold-card .card-body {
  padding: 18px;
  border-top: 1px solid rgba(117, 91, 64, 0.10);
}

.flow-node {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 250, 240, 0.88);
  border: 1px solid rgba(117, 91, 64, 0.12);
}

.flow-node strong {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
}

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

.info-note {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(236, 214, 188, 0.42);
  border: 1px solid rgba(151, 90, 45, 0.14);
  color: var(--muted);
  line-height: 1.7;
}

.tab-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.tab-button {
  appearance: none;
  border: 1px solid rgba(151, 90, 45, 0.18);
  background: rgba(255, 250, 240, 0.88);
  color: var(--accent-deep);
  border-radius: 999px;
  padding: 10px 16px;
  font: inherit;
  cursor: pointer;
}

.tab-button.active {
  background: linear-gradient(180deg, rgba(151, 90, 45, 0.96), rgba(114, 64, 27, 0.96));
  color: #fffaf2;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 18px;
}

.editor-stack {
  display: grid;
  gap: 12px;
}

.editor-group {
  padding: 14px;
  border-radius: 14px;
  background: rgba(255, 250, 240, 0.85);
  border: 1px solid rgba(117, 91, 64, 0.12);
}

.editor-path {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  color: var(--muted);
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
}

.editor-list {
  display: grid;
  gap: 10px;
}

.editor-object {
  display: grid;
  gap: 12px;
  margin-top: 10px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.04em;
  background: rgba(236, 214, 188, 0.5);
  color: var(--accent-deep);
}

.status-pill.ok {
  background: rgba(142, 184, 120, 0.22);
  color: #3d6a2c;
}

.status-pill.error {
  background: rgba(176, 74, 60, 0.16);
  color: #8b2f27;
}

.inline-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.mini-note {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

.yaml-preview {
  max-height: 520px;
}

@media (max-width: 1180px) {
  .hero,
  .layout,
  .workspace-grid,
  .meta-grid,
  .two-col,
  .three-col,
  .route-grid,
  .pc-grid {
    grid-template-columns: 1fr;
  }
}