/* ============================================
   PROJECT DETAIL — Shared Layout & Components
   Loaded after style.css; extends the main design system.
   ============================================ */

:root {
  /* Surface hierarchy (extends main palette) */
  --pd-surface-1: var(--bg-alt);
  --pd-surface-2: var(--surface);
  --pd-surface-3: #272320;

  /* Text aliases */
  --pd-text-muted: var(--text-secondary);
  --pd-text-faint: var(--text-tertiary);

  /* Semantic colors */
  --pd-green: #4ade80;
  --pd-green-dim: rgba(74, 222, 128, 0.12);
  --pd-red: #f87171;
  --pd-red-dim: rgba(248, 113, 113, 0.12);
  --pd-orange: #fb923c;
  --pd-orange-dim: rgba(251, 146, 60, 0.12);
  --pd-yellow: #fbbf24;
  --pd-yellow-dim: rgba(251, 191, 36, 0.12);
  --pd-purple: #a78bfa;
  --pd-purple-dim: rgba(167, 139, 250, 0.12);
  --pd-cyan: #22d3ee;
  --pd-cyan-dim: rgba(34, 211, 238, 0.12);
  --pd-blue: #6c8cff;
  --pd-blue-dim: rgba(108, 140, 255, 0.12);

  /* Layout */
  --pd-radius: 10px;
  --pd-sidebar-width: 240px;
  --pd-nav-height: 60px;
  --pd-mode-bar-height: 52px;
  --pd-total-header: calc(var(--pd-nav-height) + var(--pd-mode-bar-height));
}

/* ---- Body scoping ---- */
.page-project-detail {
  font-size: 15px;
  padding-top: var(--pd-nav-height);
}

/* ---- Scrollbar ---- */
.page-project-detail ::-webkit-scrollbar { width: 8px; height: 8px }
.page-project-detail ::-webkit-scrollbar-track { background: var(--bg) }
.page-project-detail ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px }

/* ---- Mode Bar ---- */
.mode-bar {
  position: sticky;
  top: var(--pd-nav-height);
  z-index: 99;
  background: rgba(15, 14, 13, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.mode-bar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.mode-bar h1 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.mode-bar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ---- Toggle Group ---- */
.toggle-group {
  display: flex;
  background: var(--pd-surface-2);
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.toggle-btn {
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--pd-text-muted);
  font-family: var(--font-sans);
  transition: all 0.2s;
}

.toggle-btn:hover { color: var(--text) }
.toggle-btn.active { background: var(--accent); color: #fff }

/* ---- GitHub Link (auth page) ---- */
.mode-bar-github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  background: var(--pd-surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  font-family: var(--font-sans);
  transition: all 0.2s;
}

.mode-bar-github:hover {
  border-color: var(--accent);
  color: #fff;
}

/* ---- Page Layout ---- */
.page-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  gap: 48px;
}

/* ---- Sidebar Nav ---- */
.sidebar-nav {
  width: var(--pd-sidebar-width);
  flex-shrink: 0;
  position: sticky;
  top: var(--pd-total-header);
  align-self: flex-start;
  max-height: calc(100vh - var(--pd-total-header) - 20px);
  overflow-y: auto;
  padding: 24px 0;
}

.sidebar-nav::-webkit-scrollbar { width: 4px }

.sidebar-nav a {
  display: block;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--pd-text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all 0.15s;
  line-height: 1.5;
}

.sidebar-nav a:hover {
  color: var(--text);
  border-left-color: var(--border);
}

.sidebar-nav a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

.sidebar-nav .nav-section {
  font-size: 10px;
  font-weight: 700;
  color: var(--pd-text-faint);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  padding: 16px 14px 6px;
  margin-top: 8px;
}

.sidebar-nav .nav-section:first-child { margin-top: 0 }

/* ---- Main Content ---- */
.content {
  flex: 1;
  min-width: 0;
  padding: 32px 0 80px;
}

.content section { margin-bottom: 64px }

.content h2 {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
  padding-top: 20px;
}

.content h3 {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin-top: 32px;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.content h4 {
  font-weight: 700;
  color: var(--accent);
  margin-top: 24px;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 12px;
}

.content p { margin-bottom: 16px; color: var(--text) }
.content ul, .content ol { margin-bottom: 16px; padding-left: 24px }
.content li { margin-bottom: 6px; color: var(--text) }
.content li::marker { color: var(--pd-text-faint) }
.content a { color: var(--accent); text-decoration: none }
.content a:hover { text-decoration: underline }

/* ---- Hero (scoped to project detail) ---- */
.page-project-detail .hero {
  min-height: auto;
  display: block;
  text-align: center;
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
  background: none;
}

.page-project-detail .hero::before,
.page-project-detail .hero::after { display: none }

.hero-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.page-project-detail .hero h2 {
  font-size: 38px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 12px;
  line-height: 1.2;
  padding-top: 0;
}

.page-project-detail .hero h2 span {
  background: linear-gradient(135deg, var(--accent), var(--pd-yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-project-detail .hero p {
  font-size: 17px;
  color: var(--pd-text-muted);
  max-width: 640px;
  margin: 0 auto 8px;
}

.hero-meta {
  font-size: 13px;
  color: var(--pd-text-faint);
  margin: 0 auto 24px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.hero-stat { text-align: center }
.hero-stat .num { font-size: 28px; font-weight: 800; color: #fff }
.hero-stat .num .accent { color: var(--accent) }
.hero-stat .label {
  font-size: 12px;
  color: var(--pd-text-faint);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ---- Callout Boxes ---- */
.callout {
  border-radius: var(--pd-radius);
  padding: 16px 20px;
  margin: 20px 0;
  border: 1px solid var(--border);
  font-size: 14px;
  line-height: 1.6;
}

.callout.info { background: var(--accent-glow); border-color: rgba(240, 120, 74, 0.25) }
.callout.success { background: var(--pd-green-dim); border-color: rgba(74, 222, 128, 0.25) }
.callout.warning { background: var(--pd-orange-dim); border-color: rgba(251, 146, 60, 0.25) }
.callout.purple { background: var(--pd-purple-dim); border-color: rgba(167, 139, 250, 0.25) }
.callout.blue { background: var(--pd-blue-dim); border-color: rgba(108, 140, 255, 0.25) }

.callout-title { font-weight: 700; margin-bottom: 4px; font-size: 13px }
.callout.info .callout-title { color: var(--accent) }
.callout.success .callout-title { color: var(--pd-green) }
.callout.warning .callout-title { color: var(--pd-orange) }
.callout.purple .callout-title { color: var(--pd-purple) }
.callout.blue .callout-title { color: var(--pd-blue) }

/* ---- Code Blocks ---- */
.page-project-detail pre {
  background: var(--pd-surface-1);
  border: 1px solid var(--border);
  border-radius: var(--pd-radius);
  padding: 16px 20px;
  overflow-x: auto;
  margin: 16px 0;
  font-size: 13px;
  line-height: 1.65;
  font-family: var(--font-mono);
}

.page-project-detail code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--pd-surface-2);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--pd-cyan);
}

.page-project-detail pre code {
  background: none;
  padding: 0;
  color: var(--text);
  font-size: 13px;
}

/* Syntax highlighting */
.kw { color: #c678dd }
.str { color: #98c379 }
.num { color: #d19a66 }
.cmt { color: #5c6370; font-style: italic }
.fn { color: #61afef }
.type { color: #e5c07b }
.op { color: #56b6c2 }
.dec { color: #e06c75 }

/* ---- Tables ---- */
.table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  border-radius: var(--pd-radius);
  border: 1px solid var(--border);
}

.page-project-detail table { width: 100%; border-collapse: collapse; font-size: 13px }

.page-project-detail th {
  text-align: left;
  padding: 10px 14px;
  background: var(--pd-surface-2);
  color: var(--pd-text-muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  border-bottom: 1px solid var(--border);
}

.page-project-detail td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.page-project-detail tr:last-child td { border-bottom: none }
td.best { color: var(--accent); font-weight: 700 }
td.second { color: var(--pd-yellow) }

/* ---- Badges ---- */
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-best { background: var(--accent-glow); color: var(--accent) }
.badge-good { background: var(--pd-green-dim); color: var(--pd-green) }
.badge-note { background: var(--pd-yellow-dim); color: var(--pd-yellow) }
.badge-get { background: var(--pd-green-dim); color: var(--pd-green) }
.badge-post { background: var(--accent-glow); color: var(--accent) }
.badge-patch { background: var(--pd-yellow-dim); color: var(--pd-yellow) }
.badge-delete { background: var(--pd-red-dim); color: var(--pd-red) }
.badge-public { background: var(--pd-green-dim); color: var(--pd-green) }
.badge-auth { background: var(--accent-glow); color: var(--accent) }
.badge-admin { background: var(--pd-purple-dim); color: var(--pd-purple) }

/* ---- Flow Steps ---- */
.flow-steps { display: flex; flex-direction: column; gap: 0; margin: 20px 0 }
.flow-step { display: flex; gap: 16px; position: relative; padding-bottom: 24px }
.flow-step:last-child { padding-bottom: 0 }
.flow-step:last-child .flow-line { display: none }

.flow-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.flow-line {
  position: absolute;
  left: 17px;
  top: 36px;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.flow-body { flex: 1; padding-top: 6px }
.flow-body strong { color: #fff }
.flow-body p { margin-bottom: 4px; font-size: 14px }

/* ---- Diagram ---- */
.diagram {
  background: var(--pd-surface-1);
  border: 1px solid var(--border);
  border-radius: var(--pd-radius);
  padding: 24px;
  margin: 20px 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  white-space: pre;
  color: var(--pd-text-muted);
}

.diagram .highlight { color: var(--accent); font-weight: 700 }
.diagram .green { color: var(--pd-green) }
.diagram .red { color: var(--pd-red) }
.diagram .yellow { color: var(--pd-yellow) }
.diagram .purple { color: var(--pd-purple) }
.diagram .cyan { color: var(--pd-cyan) }
.diagram .orange { color: var(--pd-orange) }

/* ---- File Tree ---- */
.file-tree {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  background: var(--pd-surface-1);
  border: 1px solid var(--border);
  border-radius: var(--pd-radius);
  padding: 20px 24px;
  margin: 16px 0;
}

.file-tree .dir { color: var(--accent); font-weight: 600 }
.file-tree .file { color: var(--pd-text-muted) }
.file-tree .desc { color: var(--pd-text-faint); font-family: var(--font-sans); font-size: 12px }

/* ---- Vs Block ---- */
.vs-block {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: start;
  margin: 24px 0;
}

.vs-side {
  background: var(--pd-surface-1);
  border: 1px solid var(--border);
  border-radius: var(--pd-radius);
  padding: 20px;
}

.vs-side h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 8px;
  text-transform: none;
  letter-spacing: 0;
}

.vs-side p { font-size: 13px; color: var(--pd-text-muted); margin: 0; line-height: 1.5 }

.vs-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: var(--pd-text-faint);
  padding-top: 30px;
}

/* ---- Glow Card ---- */
.glow-card {
  border: 1px solid var(--border);
  border-radius: var(--pd-radius);
  padding: 24px;
  margin: 16px 0;
  background: var(--pd-surface-1);
  position: relative;
  overflow: hidden;
}

.glow-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg, transparent 0deg, var(--accent-glow) 60deg, transparent 120deg);
  animation: pd-rotate 8s linear infinite;
  opacity: 0.5;
}

.glow-card > * { position: relative; z-index: 1 }

@keyframes pd-rotate { 100% { transform: rotate(360deg) } }

.glow-card-inner {
  background: var(--pd-surface-1);
  border-radius: 8px;
  padding: 24px;
  position: relative;
  z-index: 1;
}

/* ---- Endpoint Cards (auth page) ---- */
.endpoint {
  background: var(--pd-surface-1);
  border: 1px solid var(--border);
  border-radius: var(--pd-radius);
  margin: 12px 0;
  overflow: hidden;
}

.endpoint-header {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
}

.endpoint-header:hover { background: var(--pd-surface-2) }
.endpoint-header .method { font-weight: 800; font-family: var(--font-mono); font-size: 12px; min-width: 56px }
.endpoint-header .path { font-family: var(--font-mono); color: var(--pd-text-muted); flex: 1 }
.endpoint-header .desc { color: var(--pd-text-faint); font-size: 13px }
.endpoint-body { padding: 16px; border-top: 1px solid var(--border); display: none; font-size: 13px }
.endpoint-body.open { display: block }

/* ---- Hidden by mode ---- */
[data-mode="simple"] .tech-only { display: none !important }
[data-mode="technical"] .simple-only { display: none !important }

/* ---- Responsive ---- */
@media (max-width: 860px) {
  .page-layout { flex-direction: column; gap: 0 }
  .sidebar-nav { display: none }
  .content { padding: 24px 0 60px }
  .page-project-detail .hero h2 { font-size: 26px }
  .hero-stats { gap: 20px }
  .vs-block { grid-template-columns: 1fr; gap: 12px }
  .vs-divider { padding-top: 0 }
  .mode-bar-inner { flex-wrap: wrap }
}

@media (max-width: 480px) {
  .page-project-detail .hero { padding: 40px 0 32px }
  .page-project-detail .hero h2 { font-size: 22px }
  .mode-bar h1 { font-size: 14px }
}

/* ---- Print ---- */
@media print {
  .mode-bar { position: static }
  .page-project-detail { padding-top: 0 }
}