/* ═══════════════════════════════════════════════════════════════
   GAM Backend Docs — Dark Modern UI
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg: #0f1117;
  --bg-2: #161923;
  --bg-3: #1c1f2e;
  --bg-card: #1a1d2e;
  --bg-hover: #222640;
  --border: #2a2e42;
  --border-light: #353a52;
  --text: #e4e6f0;
  --text-2: #a0a4b8;
  --text-3: #6b7094;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --green: #22c55e;
  --green-bg: rgba(34,197,94,.12);
  --blue: #3b82f6;
  --blue-bg: rgba(59,130,246,.12);
  --purple: #a855f7;
  --purple-bg: rgba(168,85,247,.12);
  --orange: #f59e0b;
  --orange-bg: rgba(245,158,11,.12);
  --red: #ef4444;
  --red-bg: rgba(239,68,68,.12);
  --sidebar-w: 272px;
  --topbar-h: 56px;
  --radius: 10px;
  --radius-sm: 6px;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
}

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* ─── SIDEBAR ─── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform .3s ease;
}

.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: #fff;
}

.logo h1 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -.3px;
}
.logo p {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 1px;
}

.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-2);
  font-size: 24px;
  cursor: pointer;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
  overflow-y: auto;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--text-2);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all .15s;
  margin-bottom: 2px;
}
.nav-link:hover { background: var(--bg-hover); color: var(--text); }
.nav-link.active {
  background: rgba(99,102,241,.12);
  color: var(--accent-light);
}
.nav-link svg { flex-shrink: 0; opacity: .7; }
.nav-link.active svg { opacity: 1; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}
.github-link {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-2);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: color .15s;
}
.github-link:hover { color: var(--text); }

/* ─── MAIN ─── */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  height: var(--topbar-h);
  background: rgba(15,17,23,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 12px;
  z-index: 50;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 20px; height: 2px;
  background: var(--text-2);
  margin: 4px 0;
  border-radius: 1px;
}

.topbar-title { display: flex; gap: 8px; flex-wrap: wrap; }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: var(--bg-3);
  color: var(--text-2);
  border: 1px solid var(--border);
}
.badge-green { color: var(--green); background: var(--green-bg); border-color: rgba(34,197,94,.2); }
.badge-blue { color: var(--blue); background: var(--blue-bg); border-color: rgba(59,130,246,.2); }
.badge-purple { color: var(--purple); background: var(--purple-bg); border-color: rgba(168,85,247,.2); }
.badge-orange { color: var(--orange); background: var(--orange-bg); border-color: rgba(245,158,11,.2); }
.badge-red { color: var(--red); background: var(--red-bg); border-color: rgba(239,68,68,.2); }
.badge-small { font-size: 10px; padding: 2px 8px; }

/* ─── SECTIONS ─── */
.section {
  display: none;
  padding: 32px 28px;
  max-width: 1200px;
  animation: fadeIn .3s ease;
}
.section.active { display: block; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.section-header {
  margin-bottom: 28px;
}
.section-header h2 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -.5px;
  margin-bottom: 6px;
}
.section-header p {
  color: var(--text-2);
  font-size: 15px;
}

/* ─── STATS ─── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color .2s;
}
.stat-card:hover { border-color: var(--accent); }

.stat-number {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-light), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 14px;
  font-weight: 600;
  margin-top: 4px;
}
.stat-detail {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 4px;
}

/* ─── US TABLE ─── */
.us-table { margin-top: 8px; }
.us-table h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th {
  text-align: left;
  padding: 10px 14px;
  background: var(--bg-3);
  color: var(--text-2);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
tr:hover td { background: var(--bg-hover); }

code {
  font-family: 'JetBrains Mono', monospace;
  font-size: .88em;
  background: var(--bg-3);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent-light);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}
.status-badge.done {
  background: var(--green-bg);
  color: var(--green);
}
.status-badge.done::before { content: '✓'; }

/* ─── ARCHITECTURE ─── */
.arch-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 28px;
  text-align: center;
}

.arch-layer {
  padding: 16px;
  border-radius: var(--radius);
  margin-bottom: 4px;
}
.arch-layer-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-3);
  margin-bottom: 10px;
}
.arch-boxes {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}
.arch-box {
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  background: var(--bg-3);
  border: 1px solid var(--border);
}
.arch-box.highlight-blue { border-color: var(--blue); color: var(--blue); background: var(--blue-bg); }
.arch-box.highlight-green { border-color: var(--green); color: var(--green); background: var(--green-bg); }
.arch-box.highlight-purple { border-color: var(--purple); color: var(--purple); background: var(--purple-bg); }
.arch-box.highlight-orange { border-color: var(--orange); color: var(--orange); background: var(--orange-bg); }
.arch-box.highlight-red { border-color: var(--red); color: var(--red); background: var(--red-bg); }

.arch-arrow {
  color: var(--text-3);
  font-size: 18px;
  padding: 4px 0;
}

.arch-client { background: rgba(99,102,241,.06); }
.arch-api { background: rgba(59,130,246,.06); }
.arch-business { background: rgba(34,197,94,.06); }
.arch-core { background: rgba(245,158,11,.06); }
.arch-infra { background: rgba(168,85,247,.06); }

/* ─── CARDS ─── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 16px;
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.info-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
}
.info-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.info-card li {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.5;
}
.info-card li strong { color: var(--text); }

/* ─── MODELS ─── */
.model-group {
  margin-bottom: 32px;
}
.model-group-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot-gray { background: var(--text-3); }
.dot-blue { background: var(--blue); }
.dot-green { background: var(--green); }
.dot-purple { background: var(--purple); }
.dot-orange { background: var(--orange); }
.dot-red { background: var(--red); }

.models-flex {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}

.model-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s;
}
.model-card:hover { border-color: var(--accent); }
.model-card.abstract { border-style: dashed; }
.model-card.large { grid-column: span 2; }

.model-header {
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-3);
}
.model-header h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-light);
}

.model-fields {
  padding: 10px 18px;
}

.field {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0;
  font-size: 13px;
  border-bottom: 1px solid rgba(42,46,66,.5);
}
.field:last-child { border-bottom: none; }
.field.relation { background: rgba(99,102,241,.04); margin: 0 -18px; padding-left: 18px; padding-right: 18px; }

.field-name {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  font-size: 12px;
  color: var(--text);
  min-width: 140px;
}
.field-type {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-3);
}
.field-tag {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--bg-3);
  color: var(--text-2);
  margin-left: auto;
  white-space: nowrap;
}

.model-props {
  padding: 10px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.prop {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--purple-bg);
  color: var(--purple);
}

/* ─── API ENDPOINTS ─── */
.endpoint-group {
  margin-bottom: 28px;
}
.endpoint-group h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.endpoints {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.endpoint {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  font-size: 13px;
  border-bottom: 1px solid rgba(42,46,66,.5);
  transition: background .15s;
}
.endpoint:last-child { border-bottom: none; }
.endpoint:hover { background: var(--bg-hover); }

.endpoint-divider {
  border-bottom: 1px solid var(--border);
  margin: 0;
}

.method {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  min-width: 46px;
  text-align: center;
  flex-shrink: 0;
}
.method.get { background: var(--green-bg); color: var(--green); }
.method.post { background: var(--blue-bg); color: var(--blue); }
.method.put { background: var(--orange-bg); color: var(--orange); }
.method.patch { background: var(--purple-bg); color: var(--purple); }
.method.delete { background: var(--red-bg); color: var(--red); }

.endpoint code {
  flex-shrink: 0;
  background: none;
  padding: 0;
  color: var(--text);
  font-size: 13px;
}
.endpoint .desc {
  color: var(--text-3);
  font-size: 12px;
  margin-left: auto;
  text-align: right;
}

/* ─── AUTH ─── */
.code-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-top: 8px;
  overflow-x: auto;
}
.code-block pre {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-2);
}
.code-block .comment { color: var(--text-3); }

.roles-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin: 16px 0;
}

.role {
  padding: 14px 32px;
  border-radius: var(--radius);
  text-align: center;
  min-width: 320px;
  border: 1px solid var(--border);
}
.role-title { font-weight: 700; font-size: 15px; }
.role-perms { font-size: 12px; color: var(--text-2); margin-top: 2px; }
.role-arrow { color: var(--text-3); font-size: 14px; }

.role-admin { background: linear-gradient(135deg, rgba(239,68,68,.1), rgba(239,68,68,.05)); border-color: rgba(239,68,68,.3); }
.role-chief { background: linear-gradient(135deg, rgba(245,158,11,.1), rgba(245,158,11,.05)); border-color: rgba(245,158,11,.3); }
.role-editor { background: linear-gradient(135deg, rgba(59,130,246,.1), rgba(59,130,246,.05)); border-color: rgba(59,130,246,.3); }
.role-viewer { background: linear-gradient(135deg, rgba(107,112,148,.1), rgba(107,112,148,.05)); border-color: rgba(107,112,148,.3); }

.perms-table { margin-top: 12px; }
.perms-table table { max-width: 800px; }

/* ─── TECH ─── */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}

.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: all .2s;
}
.tech-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.tech-icon { font-size: 28px; margin-bottom: 8px; }
.tech-card h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.tech-card p { font-size: 12px; color: var(--text-3); }

/* ─── TREE ─── */
.tree-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  overflow-x: auto;
}
.tree pre {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text);
}
.tree-comment { color: var(--text-3); }

/* ─── FOOTER ─── */
.main-footer {
  text-align: center;
  padding: 32px 28px;
  color: var(--text-3);
  font-size: 12px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-toggle { display: block; }
  .hamburger { display: block; }
  .main { margin-left: 0; }

  .model-card.large { grid-column: span 1; }
  .models-flex, .cards-grid { grid-template-columns: 1fr; }
  .endpoint .desc { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .section { padding: 20px 16px; }
  .topbar { padding: 0 16px; }
  .stats-grid { grid-template-columns: 1fr; }
  .arch-boxes { flex-direction: column; }
  .role { min-width: auto; width: 100%; }
}