/* =============================================
   SEMA SSO DOCS — style.css
   Light mode default, dark mode via body.dark
   Brand: #4B5FEB blue, clean white/slate palette
   ============================================= */

/* ─── Design Tokens ─── */
:root {
  /* Brand */
  --brand:        #4B5FEB;
  --brand-dark:   #3A4ED4;
  --brand-light:  #6B7FF5;
  --brand-subtle: rgba(75, 95, 235, 0.08);
  --brand-muted:  rgba(75, 95, 235, 0.15);

  /* Light mode surfaces */
  --bg:           #FFFFFF;
  --bg-sidebar:   #F8FAFC;
  --bg-card:      #FFFFFF;
  --bg-card2:     #F8FAFC;
  --bg-hover:     #F1F5F9;
  --bg-code:      #0F1117;

  /* Light mode borders */
  --border:       #E2E8F0;
  --border-strong:#CBD5E1;

  /* Light mode text */
  --text:         #0F172A;
  --text-muted:   #475569;
  --text-dim:     #94A3B8;

  /* Semantic colours */
  --success:      #16A34A;
  --success-bg:   rgba(22, 163, 74, 0.08);
  --success-border:rgba(22, 163, 74, 0.25);
  --warning:      #D97706;
  --warning-bg:   rgba(217, 119, 6, 0.08);
  --warning-border:rgba(217, 119, 6, 0.25);
  --danger:       #DC2626;
  --danger-bg:    rgba(220, 38, 38, 0.08);
  --danger-border:rgba(220, 38, 38, 0.25);
  --info-bg:      rgba(75, 95, 235, 0.07);
  --info-border:  rgba(75, 95, 235, 0.3);
  --tip-bg:       rgba(14, 165, 233, 0.07);
  --tip-border:   rgba(14, 165, 233, 0.35);
  --tip-text:     #0369A1;

  /* Code (always dark) */
  --code-surface: #0F1117;
  --code-header:  #161B22;
  --code-border:  #21262D;
  --code-text:    #E6EDF3;
  --code-dim:     #8B949E;

  /* Structure */
  --sidebar-w:    264px;
  --topbar-h:     56px;
  --radius:       6px;
  --radius-lg:    8px;
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow:       0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --transition:   0.15s ease;
}

/* ─── Dark Mode ─── */
body.dark {
  --bg:           #080E1A;
  --bg-sidebar:   #0C1220;
  --bg-card:      #0F1629;
  --bg-card2:     #131D33;
  --bg-hover:     #1A2540;
  --bg-code:      #060B14;

  --border:       #1E2B45;
  --border-strong:#2A3A58;

  --text:         #F1F5F9;
  --text-muted:   #94A3B8;
  --text-dim:     #475569;

  --success:      #4ADE80;
  --success-bg:   rgba(74, 222, 128, 0.08);
  --success-border:rgba(74, 222, 128, 0.2);
  --warning:      #FBBF24;
  --warning-bg:   rgba(251, 191, 36, 0.08);
  --warning-border:rgba(251, 191, 36, 0.2);
  --danger:       #F87171;
  --danger-bg:    rgba(248, 113, 113, 0.08);
  --danger-border:rgba(248, 113, 113, 0.2);
  --info-bg:      rgba(75, 95, 235, 0.1);
  --info-border:  rgba(75, 95, 235, 0.35);
  --tip-bg:       rgba(14, 165, 233, 0.08);
  --tip-border:   rgba(14, 165, 233, 0.3);
  --tip-text:     #38BDF8;

  --code-surface: #060B14;
  --code-header:  #0A1020;
  --code-border:  #1A2540;
  --code-text:    #E6EDF3;
  --code-dim:     #6B7280;

  --shadow-sm:    0 1px 3px rgba(0,0,0,0.4);
  --shadow:       0 4px 16px rgba(0,0,0,0.5);
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 15px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

/* ─── Custom Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }
* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }

/* ─── Typography ─── */
h1 { font-size: 1.875rem; font-weight: 700; letter-spacing: -0.025em; line-height: 1.2; color: var(--text); }
h2 { font-size: 1.375rem; font-weight: 700; letter-spacing: -0.015em; color: var(--text); }
h3 { font-size: 1.1rem; font-weight: 600; color: var(--text); }
h4 { font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: var(--text-dim); }
p  { color: var(--text-muted); font-size: 0.9375rem; }
a  { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
strong { color: var(--text); font-weight: 600; }
em { color: var(--text-muted); }

code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'SF Mono', monospace;
  font-size: 0.8125em;
  background: var(--bg-card2);
  color: var(--brand);
  padding: 2px 5px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

body.dark code {
  background: #1A2540;
  color: #79C0FF;
  border-color: var(--border);
}

/* ─── Layout ─── */
.layout { display: flex; min-height: 100vh; }

/* ─── Sidebar ─── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.sidebar-header {
  padding: 16px 16px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo {
  width: 32px; height: 32px;
  background: var(--brand);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.875rem; font-weight: 800; color: #fff;
  flex-shrink: 0;
  letter-spacing: -0.02em;
}

.sidebar-title {
  font-size: 0.875rem; font-weight: 700; color: var(--text); line-height: 1.2;
}
.sidebar-subtitle {
  font-size: 0.6875rem; color: var(--text-dim); margin-top: 1px;
}

.nav-section { padding: 8px 8px 0; }
.nav-section-label {
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-dim);
  padding: 10px 8px 4px;
}

.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 8px;
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
  margin-bottom: 1px;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active {
  background: var(--brand-subtle);
  color: var(--brand);
}
body.dark .nav-item.active { color: var(--brand-light); }
.nav-item.active::before {
  content: '';
  position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 2px; height: 56%; background: var(--brand);
  border-radius: 0 2px 2px 0;
}

.nav-icon {
  width: 18px; height: 18px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  color: inherit;
}
.nav-icon svg { width: 16px; height: 16px; stroke-width: 1.75; }

.nav-badge {
  margin-left: auto;
  font-size: 0.625rem;
  background: var(--brand-muted);
  color: var(--brand);
  padding: 1px 6px;
  border-radius: 10px;
  font-weight: 700;
}
body.dark .nav-badge { color: var(--brand-light); }

.sidebar-footer {
  margin-top: auto;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 0.6875rem;
  color: var(--text-dim);
}
.sidebar-footer span { display: block; }
.sidebar-footer span + span { margin-top: 3px; }

/* ─── Main Content ─── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex; flex-direction: column;
  padding-top: var(--topbar-h);
}

/* ─── Topbar ─── */
.topbar {
  height: var(--topbar-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px;
  position: fixed; top: 0; left: var(--sidebar-w); right: 0; z-index: 50;
  backdrop-filter: blur(12px);
  transition: background var(--transition), border-color var(--transition);
}

.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8125rem; color: var(--text-dim);
}
.breadcrumb .current { color: var(--text); font-weight: 500; }
.breadcrumb-sep {
  width: 14px; height: 14px;
  opacity: 0.5;
  display: flex; align-items: center; justify-content: center;
}
.breadcrumb-sep svg { width: 12px; height: 12px; }

.topbar-right { display: flex; align-items: center; gap: 10px; }

.badge-version {
  font-size: 0.6875rem; font-weight: 600;
  background: var(--brand-subtle);
  border: 1px solid var(--brand-muted);
  color: var(--brand);
  padding: 3px 10px; border-radius: 20px;
}
body.dark .badge-version { color: var(--brand-light); }

.badge-env {
  font-size: 0.6875rem; font-weight: 600;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success);
  padding: 3px 10px; border-radius: 20px;
}

/* ─── Icon Button (theme toggle) ─── */
.icon-btn {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition);
  flex-shrink: 0;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text); border-color: var(--border-strong); }
.icon-btn svg { width: 15px; height: 15px; stroke-width: 1.75; }

/* ─── Content Area ─── */
.content {
  flex: 1;
  padding: 40px 48px;
  max-width: 980px;
  width: 100%;
}

/* ─── Sections ─── */
.section { display: none; animation: fadeUp 0.2s ease both; }
.section.active { display: block; }

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

/* ─── Page Header ─── */
.page-header { margin-bottom: 32px; }
.page-header h1 { margin-bottom: 8px; }
.page-header p { font-size: 1rem; max-width: 640px; color: var(--text-muted); }

/* ─── Cards ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  transition: background var(--transition), border-color var(--transition);
}

.card-title {
  font-size: 0.6875rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 10px;
}
.card-title::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

.card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card-grid.three { grid-template-columns: 1fr 1fr 1fr; }
.card-sm {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: background var(--transition);
}

/* ─── Architecture Diagram ─── */
.arch-diagram {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  margin: 20px 0;
  overflow-x: auto;
}

.arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: nowrap;
  min-width: 560px;
}

.arch-node {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  text-align: center;
  min-width: 108px;
  flex-shrink: 0;
}
.arch-node.primary {
  border-color: var(--brand);
  background: var(--brand-subtle);
}
.arch-node.teal {
  border-color: #0891B2;
  background: rgba(8, 145, 178, 0.07);
}
body.dark .arch-node.teal { background: rgba(8, 145, 178, 0.08); }
.arch-node.dim { opacity: 0.65; }

.arch-node-icon {
  margin-bottom: 6px;
  display: flex; align-items: center; justify-content: center;
  color: inherit;
}
.arch-node-icon svg { width: 18px; height: 18px; stroke-width: 1.75; }
.arch-node.primary .arch-node-icon { color: var(--brand); }
.arch-node.teal .arch-node-icon { color: #0891B2; }
.arch-node-label { font-size: 0.7rem; font-weight: 700; color: var(--text); }
.arch-node-label-icon {
  font-size: 0.7rem; font-weight: 700; color: var(--text);
  display: flex; align-items: center; gap: 5px;
}
.arch-node-label-icon svg { width: 13px; height: 13px; stroke-width: 2; flex-shrink: 0; }
.arch-node-sub { font-size: 0.625rem; color: var(--text-dim); margin-top: 2px; }

.arch-arrow {
  display: flex; flex-direction: column; align-items: center;
  padding: 0 6px; gap: 2px; flex-shrink: 0;
}
.arch-arrow-line {
  width: 36px; height: 1px;
  background: var(--border-strong);
  position: relative;
}
.arch-arrow-line::after {
  content: '▶';
  position: absolute; right: -7px; top: -6px;
  font-size: 0.6rem; color: var(--text-dim);
}
.arch-arrow-label { font-size: 0.6rem; color: var(--text-dim); white-space: nowrap; }

/* ─── Flow Steps ─── */
.flow-steps { display: flex; flex-direction: column; }
.flow-step { display: flex; gap: 16px; position: relative; }
.flow-step:not(:last-child)::after {
  content: '';
  position: absolute; left: 15px; top: 40px;
  width: 1px; bottom: 0;
  background: var(--border);
}

.flow-step-num {
  width: 32px; height: 32px;
  background: var(--brand-subtle);
  border: 1px solid var(--brand-muted);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700; color: var(--brand);
  flex-shrink: 0; margin-top: 8px;
}
body.dark .flow-step-num { color: var(--brand-light); border-color: rgba(107, 127, 245, 0.3); }

.flow-step-content { flex: 1; min-width: 0; padding: 8px 0 24px; }
.flow-step-title { font-size: 0.9375rem; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.flow-step-desc { font-size: 0.875rem; color: var(--text-muted); }

/* ─── Code Blocks (always dark) ─── */
.code-block {
  background: var(--code-surface);
  border: 1px solid var(--code-border);
  border-radius: var(--radius);
  margin: 12px 0;
  overflow: hidden;
}

.code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 14px;
  background: var(--code-header);
  border-bottom: 1px solid var(--code-border);
}

.code-lang {
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--code-dim);
  display: flex; align-items: center; gap: 6px;
  flex: 1; min-width: 0; overflow: hidden;
}
.code-lang .dot {
  width: 6px; height: 6px; border-radius: 50%; background: #0891B2;
}

.copy-btn {
  display: flex; align-items: center; gap: 5px;
  font-size: 0.6875rem; color: var(--code-dim);
  background: transparent;
  border: 1px solid var(--code-border);
  padding: 3px 10px; border-radius: 4px; cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}
.copy-btn svg { width: 12px; height: 12px; stroke-width: 1.75; }
.copy-btn:hover { border-color: #374151; color: #9CA3AF; }
.copy-btn.copied { border-color: #16A34A; color: #4ADE80; }

.code-block pre {
  padding: 16px 18px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--code-text);
}

/* ─── Tables ─── */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin: 16px 0;
}
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
thead { background: var(--bg-card2); }
th {
  padding: 10px 16px; text-align: left;
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  color: var(--text-muted);
}
tr:last-child td { border-bottom: none; }
tr:nth-child(even) td { background: rgba(0,0,0,0.015); }
body.dark tr:nth-child(even) td { background: rgba(255,255,255,0.02); }
.cell-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--brand);
  background: var(--brand-subtle);
  padding: 1px 5px;
  border-radius: 3px;
}
body.dark .cell-code { color: #79C0FF; background: rgba(121, 192, 255, 0.08); }

/* ─── Tags / Badges ─── */
.tag {
  display: inline-block;
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.03em;
  padding: 2px 8px; border-radius: 4px;
  text-transform: uppercase; font-family: 'JetBrains Mono', monospace;
}
.tag-get  { background: var(--success-bg); color: var(--success); border: 1px solid var(--success-border); }
.tag-post { background: var(--brand-subtle); color: var(--brand); border: 1px solid var(--brand-muted); }
body.dark .tag-post { color: var(--brand-light); }
.tag-put  { background: var(--warning-bg); color: var(--warning); border: 1px solid var(--warning-border); }
.tag-del  { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }
.tag-pub  { background: var(--tip-bg); color: #0369A1; border: 1px solid var(--tip-border); }
body.dark .tag-pub { color: #38BDF8; }
.tag-priv { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }

/* ─── Glossary ─── */
.glossary-list { display: flex; flex-direction: column; gap: 0; }
.glossary-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 12px 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.glossary-item:last-child { border-bottom: none; }
.glossary-term { display: flex; flex-direction: column; gap: 3px; }
.glossary-abbr {
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: 0.01em;
}
body.dark .glossary-abbr { color: var(--brand-light); }
.glossary-fullname {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 500;
}
.glossary-def {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 640px) {
  .glossary-item { grid-template-columns: 1fr; gap: 6px; }
}

/* ─── Info Boxes ─── */
.info-box {
  border-radius: var(--radius);
  padding: 12px 16px;
  margin: 16px 0;
  font-size: 0.875rem;
  display: flex; gap: 12px; align-items: flex-start;
  border-left: 3px solid;
}
.info-box .icon-box {
  flex-shrink: 0;
  margin-top: 1px;
  display: flex; align-items: center;
}
.info-box .icon-box svg { width: 16px; height: 16px; stroke-width: 1.75; }
.info-box p { margin: 0; line-height: 1.55; }

.info-box.info {
  background: var(--info-bg);
  border-color: var(--brand);
}
.info-box.info .icon-box { color: var(--brand); }
.info-box.info p { color: var(--text-muted); }
body.dark .info-box.info p { color: #93C5FD; }

.info-box.warn {
  background: var(--warning-bg);
  border-color: var(--warning);
}
.info-box.warn .icon-box { color: var(--warning); }
.info-box.warn p { color: var(--text-muted); }
body.dark .info-box.warn p { color: #FCD34D; }

.info-box.tip {
  background: var(--tip-bg);
  border-color: #0891B2;
}
.info-box.tip .icon-box { color: #0891B2; }
body.dark .info-box.tip .icon-box { color: #38BDF8; }
.info-box.tip p { color: var(--tip-text); }
body.dark .info-box.tip p { color: #7DD3FC; }

.info-box.success {
  background: var(--success-bg);
  border-color: var(--success);
}
.info-box.success .icon-box { color: var(--success); }
.info-box.success p { color: var(--text-muted); }
body.dark .info-box.success p { color: #86EFAC; }

/* ─── Checklist ─── */
.checklist { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.checklist li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.9rem; color: var(--text-muted);
  padding: 8px 12px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.checklist li::before {
  content: '';
  width: 16px; height: 16px; min-width: 16px;
  border: 1.5px solid var(--border-strong);
  border-radius: 4px;
  margin-top: 2px;
  display: block;
}

/* ─── Sub Tabs ─── */
.sub-tabs { display: flex; gap: 4px; margin-bottom: 20px; flex-wrap: wrap; border-bottom: 1px solid var(--border); padding-bottom: 0; }
.sub-tab {
  padding: 9px 20px;
  border-radius: var(--radius) var(--radius) 0 0;
  font-size: 0.875rem; font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  border-bottom: none;
  color: var(--text);
  background: transparent;
  transition: all var(--transition);
  font-family: inherit;
  position: relative;
  bottom: -1px;
}
.sub-tab:hover { color: var(--text); }
.sub-tab.active {
  color: var(--brand);
  background: var(--bg-card);
  border-color: var(--border);
  border-bottom-color: var(--bg-card);
}
body.dark .sub-tab.active { color: var(--brand-light); }
.sub-content { display: none; }
.sub-content.active { display: block; animation: fadeUp 0.15s ease both; }

/* ─── Grid helpers ─── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.flex-gap { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.mt-4  { margin-top: 4px; }
.mt-8  { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-4  { margin-bottom: 4px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

/* ─── App Cards ─── */
.app-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0; }
.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  cursor: pointer;
  transition: all var(--transition);
}
.app-card:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}
.app-card-name { font-size: 0.9375rem; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.app-card-role { font-size: 0.8125rem; color: var(--text-dim); margin-bottom: 10px; }
.app-card-tags { display: flex; gap: 6px; flex-wrap: wrap; }

/* ─── Env Var List ─── */
.env-list { display: flex; flex-direction: column; gap: 6px; }
.env-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 10px 14px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  transition: background var(--transition);
}
.env-key {
  font-family: 'JetBrains Mono', monospace; font-size: 0.8rem;
  color: var(--brand); font-weight: 600;
  min-width: 240px; flex-shrink: 0;
}
body.dark .env-key { color: #79C0FF; }
.env-val { color: var(--text-muted); flex: 1; font-size: 0.875rem; }
.env-req {
  color: var(--danger); font-size: 0.6875rem; font-weight: 600;
  margin-left: auto; flex-shrink: 0; white-space: nowrap;
}

/* ─── Language Toggle ─── */
.lang-toggle { display: flex; align-items: center; gap: 6px; }
.lang-globe { color: var(--text-dim); display: flex; align-items: center; }
.lang-globe svg { width: 15px; height: 15px; stroke-width: 1.75; }
.lang-pills {
  display: flex; align-items: center;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2px;
  gap: 1px;
}
.lang-btn {
  background: transparent;
  border: none;
  border-radius: 14px;
  padding: 3px 10px;
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.04em;
  color: var(--text-dim);
  cursor: pointer; font-family: inherit;
  transition: all var(--transition); line-height: 1;
}
.lang-btn:hover { color: var(--text); background: var(--bg-hover); }
.lang-btn.active { background: var(--brand); color: #fff; }
body.dark .lang-btn.active { background: var(--brand); }

/* ─── Back to Top ─── */
#back-top {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--brand);
  color: #fff; border: none; cursor: pointer;
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
  opacity: 0; pointer-events: none;
  transition: all var(--transition);
  z-index: 200;
}
#back-top svg { width: 16px; height: 16px; stroke-width: 2; }
#back-top.visible { opacity: 1; pointer-events: all; }
#back-top:hover { background: var(--brand-dark); transform: translateY(-2px); }

/* ─── Hamburger ─── */
.hamburger {
  display: none; cursor: pointer;
  background: transparent; border: 1px solid var(--border);
  color: var(--text-muted); padding: 5px 8px;
  border-radius: var(--radius); font-size: 1rem;
  line-height: 1; align-items: center; justify-content: center;
}
.hamburger svg { width: 18px; height: 18px; stroke-width: 1.75; }

/* ─── Progress Bar ─── */
#progress {
  position: fixed; top: 0; left: 0;
  height: 2px;
  background: var(--brand);
  z-index: 999;
  transition: width 0.08s linear;
}

/* ─── Sidebar overlay (mobile) ─── */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 99;
}
.sidebar-overlay.visible { display: block; }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); box-shadow: none; }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow); }
  .main { margin-left: 0; }
  .content { padding: 24px 20px; }
  .hamburger { display: flex; }
  .card-grid, .grid-2, .grid-3, .app-grid { grid-template-columns: 1fr; }
  .topbar { padding: 0 16px; left: 0; }
  .env-key { min-width: 160px; }
}

@media (max-width: 640px) {
  h1 { font-size: 1.5rem; }
  .content { padding: 20px 16px; }
  .card { padding: 16px; }
  .badge-version, .badge-env { display: none; }
}

/* ─── Anchor scroll offset ─── */
:target { scroll-margin-top: 72px; }

/* ─── Screenshot Placeholder ─── */
.screenshot-placeholder {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  background: var(--bg-card2);
  margin: 16px 0;
}
.screenshot-placeholder svg { width: 26px; height: 26px; stroke-width: 1.5; color: var(--text-dim); }
.screenshot-placeholder .ss-label {
  font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--brand);
}
.screenshot-placeholder .ss-caption {
  font-size: 0.8125rem; color: var(--text-dim); font-style: italic; margin: 0;
}

/* ─── Download / Action Button ─── */
.btn-download {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  background: var(--brand-subtle);
  border: 1px solid var(--brand-muted);
  border-radius: var(--radius);
  color: var(--brand);
  font-size: 0.875rem; font-weight: 600;
  cursor: pointer; text-decoration: none;
  transition: all var(--transition);
  font-family: inherit;
}
.btn-download:hover { background: var(--brand-muted); text-decoration: none; }
.btn-download svg { width: 15px; height: 15px; stroke-width: 2; }
body.dark .btn-download { color: var(--brand-light); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0 8px; }

/* ─── Env Copy All Button (absolute positioned top-right of card) ─── */
.card { position: relative; }
.env-copy-all {
  position: absolute;
  top: 20px; right: 20px;
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-dim);
  font-size: 0.6875rem; font-weight: 600;
  cursor: pointer; font-family: inherit;
  transition: all var(--transition);
  white-space: nowrap;
  z-index: 1;
}
.env-copy-all svg { width: 12px; height: 12px; stroke-width: 1.75; }
.env-copy-all:hover { border-color: var(--border-strong); color: var(--text); background: var(--bg-hover); }
.env-copy-all.copied { border-color: var(--success); color: var(--success); }

/* ─── Per-Variable Copy Icon ─── */
.env-var-copy {
  opacity: 0;
  transition: opacity 0.1s ease;
  background: transparent; border: none; cursor: pointer;
  color: var(--text-dim); padding: 2px 6px;
  display: flex; align-items: center; flex-shrink: 0;
  border-radius: 4px;
}
.env-var-copy svg { width: 13px; height: 13px; stroke-width: 1.75; }
.env-item:hover .env-var-copy { opacity: 1; }
.env-var-copy:hover { color: var(--brand); background: var(--brand-subtle); }
.env-var-copy.copied { color: var(--success); opacity: 1; }

/* ─── New Architecture Diagram (v2) ─── */
.arch-v2 {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px 20px;
  margin: 16px 0;
  overflow-x: auto;
}
.arch-v2-inner {
  display: flex; flex-direction: column; align-items: center;
  gap: 0; min-width: 540px;
}
.arch-v2-row {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; width: 100%;
}
.arch-v2-node {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  text-align: center; min-width: 96px;
  flex-shrink: 0;
}
.arch-v2-node.primary { border-color: var(--brand); background: var(--brand-subtle); }
.arch-v2-node.gateway {
  border-color: #0891B2; background: rgba(8, 145, 178, 0.07);
  min-width: 280px; padding: 14px 20px;
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}
.arch-v2-node.identity { border-color: #7C3AED; background: rgba(124, 58, 237, 0.06); }
.arch-v2-node.dim { opacity: 0.72; }
.arch-v2-node-icon { display: flex; align-items: center; justify-content: center; margin-bottom: 4px; }
.arch-v2-node-icon svg { width: 15px; height: 15px; stroke-width: 1.75; }
.arch-v2-node.primary .arch-v2-node-icon { color: var(--brand); }
.arch-v2-node.gateway .arch-v2-node-icon { color: #0891B2; }
.arch-v2-node.identity .arch-v2-node-icon { color: #7C3AED; }
.arch-v2-label { font-size: 0.6875rem; font-weight: 700; color: var(--text); }
.arch-v2-sub { font-size: 0.6rem; color: var(--text-dim); margin-top: 2px; }
.arch-v2-inline { display: flex; align-items: center; gap: 5px; justify-content: center; margin-bottom: 3px; }
.arch-v2-inline svg { width: 12px; height: 12px; stroke-width: 2; }

.arch-v2-down { display: flex; flex-direction: column; align-items: center; padding: 4px 0 2px; }
.arch-v2-down-line {
  width: 2px; height: 20px;
  background: var(--border-strong); position: relative;
}
.arch-v2-down-line::after {
  content: '▼'; position: absolute; bottom: -10px; left: -5px;
  font-size: 0.6rem; color: var(--border-strong);
}
.arch-v2-down-label {
  font-size: 0.6rem; color: var(--text-dim); text-align: center;
  font-family: 'JetBrains Mono', monospace; max-width: 340px;
  margin-top: 12px; line-height: 1.5;
}
.arch-v2-split {
  display: flex; align-items: flex-start; justify-content: center;
  gap: 40px; width: 100%; margin-top: 4px;
}
.arch-v2-split-branch {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  flex: 1; max-width: 220px;
}
.arch-v2-branch-label {
  font-size: 0.6rem; color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace; text-align: center;
  padding: 3px 10px; background: var(--bg-card);
  border-radius: var(--radius); border: 1px solid var(--border);
  white-space: nowrap;
}
.arch-v2-return {
  margin-top: 14px; width: 100%;
  padding: 9px 14px;
  background: var(--success-bg); border: 1px solid var(--success-border);
  border-radius: var(--radius);
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.75rem; color: var(--text-muted); line-height: 1.55;
}
.arch-v2-return svg { width: 14px; height: 14px; flex-shrink: 0; color: var(--success); margin-top: 1px; }

/* ─── Keycloak Step List ─── */
.step-list { display: flex; flex-direction: column; gap: 0; }
.step-item {
  display: flex; gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.step-item:last-child { border-bottom: none; padding-bottom: 0; }
.step-badge {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--brand); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700;
  flex-shrink: 0; margin-top: 1px;
}
.step-body { flex: 1; min-width: 0; }
.step-title { font-size: 0.9375rem; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.step-desc { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 10px; line-height: 1.6; }
.step-desc:last-child { margin-bottom: 0; }

/* ─── Code Description Paragraph ─── */
.code-desc {
  font-size: 0.875rem; color: var(--text-muted);
  margin: 16px 0 6px; line-height: 1.6;
}

/* ─── Danger/Critical Info Box ─── */
.info-box.danger {
  background: var(--danger-bg);
  border-color: var(--danger);
}
.info-box.danger .icon-box { color: var(--danger); }
.info-box.danger p { color: var(--text-muted); }
body.dark .info-box.danger p { color: #FCA5A5; }

/* ─── Service Launch Grid ─── */
.launch-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0; }
.launch-item {
  background: var(--bg-card2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px 14px;
}
.launch-item-name { font-size: 0.75rem; font-weight: 700; color: var(--brand); margin-bottom: 4px; }
body.dark .launch-item-name { color: var(--brand-light); }
.launch-item-port { font-size: 0.6875rem; color: var(--text-dim); margin-bottom: 8px; }

/* ─── Additional Mobile Fixes ─── */
@media (max-width: 900px) {
  .arch-v2-split { gap: 16px; }
  .arch-v2-node.gateway { min-width: 200px; }
  .launch-grid { grid-template-columns: 1fr; }
  .env-copy-all { top: 14px; right: 14px; }
}
@media (max-width: 600px) {
  .arch-v2-inner { min-width: 400px; }
  .arch-v2-row { gap: 5px; }
  .arch-v2-node { min-width: 76px; padding: 8px 8px; }
  .arch-v2-node.gateway { min-width: 190px; padding: 10px 12px; }
  .arch-v2-split { gap: 10px; }
  .arch-v2-split-branch { max-width: 180px; }
  .step-item { gap: 10px; }
  .step-badge { width: 24px; height: 24px; font-size: 0.7rem; }
  .env-key { min-width: 140px; font-size: 0.72rem; }
  .flow-step-content { padding: 6px 0 14px; }
  .sub-tabs { gap: 2px; }
  .sub-tab { padding: 6px 10px; font-size: 0.75rem; }
  .lang-btn { padding: 3px 7px; }
  .topbar { padding: 0 12px; }
  .breadcrumb { display: none; }
}

/* ─── Global horizontal overflow containment ─── */
html { overflow-x: hidden; }
.main { overflow-x: clip; }

/* ─── Topbar right side — very small screens ─── */
@media (max-width: 480px) {
  .topbar-right { gap: 6px; }
  .lang-globe { display: none; }
  .env-item { flex-direction: column; gap: 6px; align-items: flex-start; }
  .env-key { min-width: 0; word-break: break-all; }
  .env-req { margin-left: 0; }
}
@media (max-width: 360px) {
  .lang-pills { gap: 1px; }
  .lang-btn { padding: 2px 5px !important; font-size: 0.62rem; }
}

/* ─── Screenshot grid ─── */
.screenshot-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 16px 0;
}
.screenshot-grid > div { min-width: 0; }
@media (max-width: 600px) {
  .screenshot-grid { grid-template-columns: 1fr; }
}

/* ─── Clickable screenshot image ─── */
.screenshot-img {
  cursor: zoom-in;
  width: 100%;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.screenshot-img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow);
}
.ss-caption {
  font-size: 0.8125rem;
  color: var(--text-dim);
  font-style: italic;
  margin: 6px 0 0;
  text-align: center;
}

/* ─── Image modal ─── */
.img-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.88);
  align-items: center;
  justify-content: center;
  padding: 20px;
  cursor: zoom-out;
}
.img-modal.open { display: flex; }
.img-modal-inner {
  position: relative;
  max-width: min(92vw, 1200px);
}
.img-modal-inner img {
  display: block;
  max-width: 100%;
  max-height: 90vh;
  border-radius: 8px;
  object-fit: contain;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
  cursor: default;
}
.img-modal-close {
  position: absolute;
  top: -14px; right: -14px;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: #fff;
  border: none;
  cursor: pointer;
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  color: #333;
  line-height: 1;
  z-index: 1;
}
.img-modal-close:hover { background: #f0f0f0; }

/* ─── Mobile overflow containment ─── */
.main { min-width: 0; }
p, td, li, .step-desc, .info-box p { overflow-wrap: break-word; word-break: break-word; }
.code-block, .table-wrap { max-width: 100%; }
@media (max-width: 640px) {
  th { white-space: normal; }
  .cell-code { word-break: break-all; }
  .code-block pre { font-size: 0.75rem; }
  .card { overflow: hidden; }
}

/* ─── Topbar 3-zone layout ─── */
.topbar-left { display: flex; align-items: center; gap: 10px; flex: 1; flex-shrink: 0; min-width: 0; }
.topbar-search { flex-shrink: 0; width: 360px; display: flex; align-items: center; }
.topbar-right { flex: 1; display: flex; align-items: center; gap: 10px; justify-content: flex-end; flex-shrink: 0; }

/* ─── Search input ─── */
.search-wrap { position: relative; width: 100%; }
.search-icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--text-dim); pointer-events: none; display: flex; }
.search-icon svg { width: 14px; height: 14px; stroke-width: 1.75; }
.search-input {
  width: 100%; height: 32px;
  padding: 0 28px 0 32px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text); font-size: 0.8125rem; font-family: inherit;
  outline: none; transition: all var(--transition);
}
.search-input:focus { border-color: var(--brand); background: var(--bg-card); box-shadow: 0 0 0 3px var(--brand-subtle); }
.search-input::placeholder { color: var(--text-dim); }
.search-clear {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--text-dim); border: none; cursor: pointer;
  color: var(--bg); font-size: 9px; font-weight: 700;
  display: none; align-items: center; justify-content: center; padding: 0;
  transition: background var(--transition); line-height: 1;
}
.search-clear.visible { display: flex; }
.search-clear:hover { background: var(--text-muted); }

/* ─── Search panel ─── */
.search-panel {
  display: none;
  position: fixed; top: var(--topbar-h); left: var(--sidebar-w); right: 0;
  z-index: 49;
  background: var(--bg); border-bottom: 1px solid var(--border);
  box-shadow: 0 12px 40px rgba(0,0,0,0.13);
  max-height: calc(100vh - var(--topbar-h) - 40px); overflow-y: auto;
}
.search-panel.open { display: block; }
.search-panel-inner { padding: 20px 48px 28px; max-width: 980px; }
.search-summary { font-size: 0.75rem; color: var(--text-dim); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.search-summary-close { background: none; border: none; cursor: pointer; color: var(--text-dim); font-size: 1rem; padding: 0 2px; line-height: 1; transition: color var(--transition); }
.search-summary-close:hover { color: var(--text); }
.search-section-group { margin-bottom: 20px; }
.search-section-group:last-child { margin-bottom: 4px; }
.search-section-title {
  font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--brand);
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
body.dark .search-section-title { color: var(--brand-light); }
.search-section-badge {
  background: var(--brand-subtle); border: 1px solid var(--brand-muted);
  color: var(--brand); padding: 1px 7px; border-radius: 10px;
  font-size: 0.625rem; font-weight: 700;
}
body.dark .search-section-badge { color: var(--brand-light); }
.search-result-item {
  padding: 9px 12px; border-radius: var(--radius);
  cursor: pointer; border: 1px solid transparent;
  margin-bottom: 3px; transition: all var(--transition);
}
.search-result-item:hover, .search-result-item:focus { background: var(--bg-card); border-color: var(--border); outline: none; }
.search-result-context {
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--text-dim); margin-bottom: 3px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.search-result-snippet { font-size: 0.875rem; color: var(--text-muted); line-height: 1.5; }
.search-more { font-size: 0.75rem; color: var(--text-dim); padding: 4px 12px; font-style: italic; }
.search-no-results { text-align: center; padding: 40px 16px; color: var(--text-dim); font-size: 0.9375rem; }
.search-no-results strong { color: var(--text); }

/* ─── Search highlights ─── */
/* In page body: subtle amber underlay */
mark.search-hl {
  background: rgba(251,191,36,0.28); color: inherit;
  border-radius: 2px; padding: 1px 0;
}
body.dark mark.search-hl { background: rgba(251,191,36,0.18); }
/* In results panel: ID selector guarantees priority — vivid amber, unmissable */
#search-panel mark.search-hl {
  background: #FCD34D;
  color: #1C1917;
  border-radius: 3px;
  padding: 1px 4px;
  font-weight: 700;
}
body.dark #search-panel mark.search-hl {
  background: #D97706;
  color: #FEF3C7;
}
/* Results-panel snippet highlights — span avoids mark UA-stylesheet interference */
.snippet-hl {
  background: #FCD34D !important;
  color: inherit !important;
  border-radius: 2px;
  padding: 1px 0;
}
body.dark .snippet-hl {
  background: #B45309 !important;
}
.search-target {
  outline: 2px solid var(--brand) !important;
  outline-offset: 4px; border-radius: var(--radius);
  animation: searchPulse 0.7s ease 3;
}
@keyframes searchPulse {
  0%,100% { outline-color: var(--brand); }
  50% { outline-color: transparent; }
}

/* ─── Mobile search adaptations ─── */
@media (max-width: 900px) {
  .search-panel { left: 0; }
  .topbar-search { flex: 1; width: auto; min-width: 0; padding: 0 8px; }
  .topbar-left { flex: 0 0 auto; }
  .topbar-right { flex: 0 0 auto; }
  .search-panel-inner { padding: 16px 20px 20px; }
}
@media (max-width: 640px) {
  .breadcrumb { display: none; }
}
@media (max-width: 480px) {
  .search-panel-inner { padding: 12px 16px 16px; }
}