*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0f1117;
  --bg-secondary: #161822;
  --bg-tertiary: #1c1e2e;
  --surface: #1e2030;
  --surface-hover: #252840;
  --border: #2a2d42;
  --border-light: #353858;
  --text: #e2e4f0;
  --text-secondary: #9ca0b8;
  --text-muted: #6b6f8a;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-bg: rgba(99, 102, 241, 0.1);
  --blue: #38bdf8;
  --green: #34d399;
  --orange: #fb923c;
  --purple: #a78bfa;
  --red: #f87171;
  --sidebar-width: 260px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  display: flex;
  min-height: 100vh;
}

/* ── SIDEBAR ── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 20px 0 32px;
  overflow-y: auto;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-header {
  padding: 0 16px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
}

.version-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  background: var(--primary-bg);
  color: var(--primary);
  border-radius: 12px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.sidebar-search {
  padding: 12px 12px 4px;
}

.sidebar-search input {
  width: 100%;
  padding: 8px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.15s;
}

.sidebar-search input:focus {
  border-color: var(--primary);
}

.sidebar-search input::placeholder {
  color: var(--text-muted);
}

.nav-links {
  list-style: none;
  padding: 8px 8px 0;
}

.nav-group-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  padding: 16px 16px 4px;
}

.nav-link {
  display: block;
  padding: 7px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.15s ease;
  margin-bottom: 1px;
}

.nav-link:hover {
  color: var(--text);
  background: var(--surface-hover);
}

.nav-link.active {
  color: var(--primary-hover);
  background: var(--primary-bg);
}

.nav-link.hidden {
  display: none;
}

.sidebar-toggle {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
}

/* ── CONTENT ── */
.content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 48px 64px;
  max-width: 960px;
}

.section {
  margin-bottom: 72px;
  animation: fadeInUp 0.4s ease both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-header { margin-bottom: 36px; }

.section-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary);
  margin-bottom: 10px;
}

h1 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 14px;
  background: linear-gradient(135deg, var(--text), var(--primary-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 { font-size: 26px; font-weight: 700; margin-bottom: 14px; }
h3 { font-size: 19px; font-weight: 600; margin: 28px 0 10px; }
h4 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }

p { color: var(--text-secondary); margin-bottom: 14px; }

.section-subtitle { font-size: 16px; max-width: 640px; }

code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--surface);
  color: var(--primary-hover);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ── FEATURE CARDS ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.feature-card h3 { font-size: 15px; margin: 10px 0 6px; }
.feature-card p { font-size: 13px; margin: 0; }

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-icon.purple { background: rgba(99, 102, 241, 0.15); color: var(--primary-hover); }
.card-icon.blue { background: rgba(56, 189, 248, 0.15); color: var(--blue); }
.card-icon.green { background: rgba(52, 211, 153, 0.15); color: var(--green); }
.card-icon.orange { background: rgba(251, 146, 60, 0.15); color: var(--orange); }

/* ── ARCHITECTURE DIAGRAM ── */
.architecture-diagram {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.arch-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 20px;
}

.arch-row:last-child { margin-bottom: 0; }

.arch-box {
  padding: 14px 18px;
  border-radius: 10px;
  text-align: center;
  min-width: 200px;
  border: 1px solid var(--border);
  transition: transform 0.2s;
}

.arch-box:hover { transform: scale(1.03); }

.arch-box strong { display: block; font-size: 13px; margin-bottom: 3px; }
.arch-box span { font-size: 11px; color: var(--text-muted); }

.arch-box.consumer { background: rgba(99, 102, 241, 0.1); border-color: rgba(99, 102, 241, 0.3); }
.arch-box.jenkins { background: rgba(251, 191, 36, 0.1); border-color: rgba(251, 191, 36, 0.3); }
.arch-box.cli { background: rgba(56, 189, 248, 0.1); border-color: rgba(56, 189, 248, 0.3); }
.arch-box.engine { background: rgba(52, 211, 153, 0.1); border-color: rgba(52, 211, 153, 0.3); }
.arch-box.l3 { background: rgba(251, 146, 60, 0.1); border-color: rgba(251, 146, 60, 0.3); }
.arch-box.l2 { background: rgba(167, 139, 250, 0.1); border-color: rgba(167, 139, 250, 0.3); }
.arch-box.aws { background: rgba(248, 113, 113, 0.1); border-color: rgba(248, 113, 113, 0.3); }

.arch-arrow { font-size: 22px; color: var(--text-muted); flex-shrink: 0; }

/* ── TABS ── */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 10px 10px 0 0;
  padding: 6px 6px 0;
  overflow-x: auto;
}

.tab {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-sans);
  background: transparent;
  border: none;
  border-radius: 8px 8px 0 0;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.tab:hover { color: var(--text-secondary); }

.tab.active {
  color: var(--primary-hover);
  background: var(--surface);
}

.tab-content {
  display: none;
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 10px 10px;
  background: var(--surface);
  padding: 0;
  animation: tabFade 0.2s ease;
}

.tab-content.active { display: block; }

.tab-content > .code-block {
  border: none;
  border-radius: 0 0 10px 10px;
  margin: 0;
}

.tab-content > .env-preview { padding: 20px; }

@keyframes tabFade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ── ENV PREVIEW ── */
.env-preview {
  padding: 20px;
}

.env-row {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 6px;
  background: var(--bg-tertiary);
  transition: background 0.15s;
}

.env-row:hover { background: var(--surface-hover); }

.env-row.injected {
  border-left: 3px solid var(--primary);
  background: var(--primary-bg);
}

.env-key {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--green);
  min-width: 160px;
}

.env-val {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
}

/* ── FILE CARDS ── */
.file-cards {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.file-card {
  display: flex;
  gap: 16px;
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s;
}

.file-card:hover { border-color: var(--border-light); }

.file-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 800;
  font-family: var(--font-mono);
}

.file-icon.js { background: rgba(251, 191, 36, 0.15); color: #fbbf24; }
.file-icon.json { background: rgba(52, 211, 153, 0.15); color: var(--green); }
.file-icon.jf { background: rgba(248, 113, 113, 0.15); color: var(--red); }

.file-card h4 { font-family: var(--font-mono); font-size: 14px; color: var(--text); }
.file-card p { font-size: 13px; margin: 0; }

/* ── COLLAPSIBLES ── */
.collapsible {
  border: 1px solid var(--border);
  border-radius: 10px;
  margin: 14px 0;
  overflow: hidden;
  transition: border-color 0.2s;
}

.collapsible[open] { border-color: var(--border-light); }

.collapsible summary {
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  background: var(--bg-tertiary);
  transition: background 0.15s;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.collapsible summary::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(-45deg);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.collapsible[open] summary::before {
  transform: rotate(45deg);
}

.collapsible summary:hover { background: var(--surface-hover); }

.collapsible > .code-block {
  border: none;
  border-radius: 0;
  margin: 0;
}

.collapsible > .callout { margin: 0 16px 16px; }

/* ── CODE BLOCKS ── */
.code-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin: 14px 0;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.copy-btn {
  background: var(--surface-hover);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.copy-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.copy-btn.copied {
  background: var(--green);
  border-color: var(--green);
  color: #000;
}

pre {
  padding: 14px 18px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.55;
}

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

/* ── TABLES ── */
.table-wrapper {
  overflow-x: auto;
  margin: 14px 0;
  border: 1px solid var(--border);
  border-radius: 10px;
}

table { width: 100%; border-collapse: collapse; }

thead { background: var(--bg-tertiary); }

th {
  text-align: left;
  padding: 10px 16px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

td {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

tr:last-child td { border-bottom: none; }
tr:hover { background: var(--surface-hover); }

.highlight-row { background: var(--primary-bg); }
.highlight-row:hover { background: rgba(99, 102, 241, 0.15); }

.badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.badge.required { background: rgba(248, 113, 113, 0.15); color: var(--red); }
.badge.optional { background: rgba(52, 211, 153, 0.15); color: var(--green); }

/* ── CONSTRUCT GRID ── */
.construct-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.construct-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  transition: all 0.2s ease;
}

.construct-card:hover { border-color: var(--border-light); transform: translateY(-1px); }

.construct-card h4 {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--primary-hover);
  margin-bottom: 5px;
}

.construct-desc { font-size: 12px; margin-bottom: 8px; }

.construct-meta { display: flex; gap: 5px; flex-wrap: wrap; }

.tag {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  background: var(--bg-tertiary);
  color: var(--text-muted);
  border-radius: 4px;
}

/* ── PREREQ GRID ── */
.prereq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 18px;
}

.prereq-item {
  display: flex;
  gap: 14px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.prereq-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-bg);
  border-radius: 8px;
}

.prereq-item strong { display: block; font-size: 14px; margin-bottom: 2px; }
.prereq-item p { font-size: 12px; color: var(--text-muted); margin: 0; }

/* ── STEP LIST ── */
.step-list { margin-top: 20px; }

.step {
  display: flex;
  gap: 18px;
  margin-bottom: 28px;
  position: relative;
}

.step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 17px;
  top: 42px;
  bottom: -10px;
  width: 2px;
  background: var(--border);
}

.step-number {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: white;
  font-weight: 700;
  font-size: 13px;
  border-radius: 50%;
}

.step-content { flex: 1; padding-top: 3px; }
.step-content p { font-size: 13px; }

/* ── CALLOUT ── */
.callout {
  padding: 14px 18px;
  border-radius: 10px;
  margin: 16px 0;
  font-size: 13px;
  border-left: 3px solid;
}

.callout.info {
  background: rgba(56, 189, 248, 0.06);
  border-color: var(--blue);
  color: var(--text-secondary);
}

.callout.warning {
  background: rgba(251, 146, 60, 0.06);
  border-color: var(--orange);
  color: var(--text-secondary);
}

.callout strong { color: var(--text); }

/* ── FLOW DIAGRAM ── */
.flow-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin: 20px 0;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.flow-step {
  padding: 10px 22px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  text-align: center;
  min-width: 420px;
  transition: border-color 0.15s;
}

.flow-step:hover { border-color: var(--primary); }
.flow-step strong { color: var(--primary-hover); margin-right: 4px; }
.flow-arrow { color: var(--text-muted); font-size: 16px; }

/* ── FOOTER ── */
.footer {
  padding: 28px 0;
  border-top: 1px solid var(--border);
  margin-top: 32px;
  text-align: center;
}

.footer p { font-size: 12px; color: var(--text-muted); }
.footer code { font-size: 12px; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .content { padding: 32px 28px; }
}

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: flex; }
  .content { margin-left: 0; padding: 72px 18px 28px; max-width: 100%; }
  .card-grid, .construct-grid, .prereq-grid { grid-template-columns: 1fr; }
  h1 { font-size: 26px; }
  h2 { font-size: 21px; }
  .arch-row { flex-direction: column; }
  .arch-arrow { transform: rotate(90deg); }
  .flow-step { min-width: auto; width: 100%; }
  .tabs { flex-wrap: wrap; }
}

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