/* SAI — Global Styles */
/* ============================================================ */

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  --bg-base:       #03030a;
  --bg-surface:    #06060f;
  --bg-elevated:   #0a0a1a;
  --bg-hover:      #0e0e22;
  --bg-card:       #07071a;

  --accent:        #4488ff;
  --accent-soft:   #6ba3ff;
  --accent-dim:    rgba(68, 136, 255, 0.1);
  --accent-glow:   rgba(68, 136, 255, 0.18);

  --text-primary:  #dde4f4;
  --text-secondary:#7880a0;
  --text-muted:    #3a405e;
  --text-inverse:  #03030a;

  --border:        #0c1030;
  --border-soft:   #161e40;

  --success:       #22c55e;
  --warning:       #f59e0b;
  --danger:        #ef4444;
  --danger-dim:    rgba(239, 68, 68, 0.15);
  --info:          #4488ff;

  --sidebar-width: 240px;
  --header-height: 60px;

  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  22px;

  --shadow-sm:  0 1px 4px rgba(0,0,0,0.5);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.6);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.8);
  --shadow-glow: 0 0 40px rgba(68,136,255,0.08);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;

  --transition: 0.2s ease;
  --transition-slow: 0.35s ease;
}

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

html { font-size: clamp(13px, 0.6vw + 9px, 16px); scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-soft); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--text-primary); }

img { max-width: 100%; display: block; }

/* ── Typography ────────────────────────────────────────────── */
h1 { font-size: 2.25rem; font-weight: 700; line-height: 1.2; }
h2 { font-size: 1.5rem;  font-weight: 650; line-height: 1.3; }
h3 { font-size: 1.125rem; font-weight: 600; }
h4 { font-size: 0.95rem;  font-weight: 600; }
p  { color: var(--text-secondary); }

code, pre { font-family: var(--font-mono); }

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-soft); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: #444458; }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent-soft);
  border-color: var(--accent-soft);
  box-shadow: 0 0 0 6px var(--accent-glow);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-soft);
}
.btn-outline:hover {
  background: var(--bg-hover);
  border-color: #444458;
  color: var(--text-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border-color: rgba(239,68,68,0.3);
}
.btn-danger:hover {
  background: rgba(239,68,68,0.25);
  border-color: var(--danger);
}

.btn-sm { padding: 6px 14px; font-size: 13px; border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 28px; font-size: 16px; border-radius: var(--radius-lg); }
.btn-icon {
  padding: 8px;
  width: 36px;
  height: 36px;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.btn:disabled, .btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* ── Inputs ────────────────────────────────────────────────── */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
}

.input {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--font);
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
  outline: none;
}
.input::placeholder { color: var(--text-muted); }
.input:hover { border-color: var(--border-soft); }
.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

select.input { cursor: pointer; }
select.input option { background: var(--bg-elevated); }

textarea.input {
  resize: vertical;
  min-height: 100px;
  line-height: 1.5;
}

/* ── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.card:hover { border-color: var(--border-soft); }
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}
.card-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ── Stat cards ────────────────────────────────────────────── */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: all var(--transition);
}
.stat-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}
.stat-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  margin: 6px 0 4px;
  font-variant-numeric: tabular-nums;
}
.stat-delta {
  font-size: 12px;
  color: var(--text-muted);
}
.stat-delta.up   { color: var(--success); }
.stat-delta.down { color: var(--danger); }

/* ── Tables ────────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th {
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 11px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  vertical-align: middle;
}

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

.mono { font-family: var(--font-mono); font-size: 13px; }

/* ── Badges / Tags ─────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
}
.badge-success { background: rgba(34,197,94,0.12); color: var(--success); border: 1px solid rgba(34,197,94,0.25); }
.badge-danger  { background: var(--danger-dim); color: var(--danger); border: 1px solid rgba(239,68,68,0.25); }
.badge-warning { background: rgba(245,158,11,0.12); color: var(--warning); border: 1px solid rgba(245,158,11,0.25); }
.badge-purple  { background: var(--accent-dim); color: var(--accent-soft); border: 1px solid rgba(139,92,246,0.25); }
.badge-muted   { background: var(--bg-elevated); color: var(--text-muted); border: 1px solid var(--border-soft); }

/* ── Code blocks ───────────────────────────────────────────── */
.code-block {
  background: #0d0d14;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.code-block pre {
  padding: 20px;
  overflow-x: auto;
  margin: 0;
}
.code-block code {
  font-size: 13px;
  line-height: 1.7;
  color: #c9d1d9;
  tab-size: 2;
}

/* Syntax highlight tokens */
.tok-key     { color: #ff79c6; }
.tok-str     { color: #f1fa8c; }
.tok-num     { color: #bd93f9; }
.tok-bool    { color: #50fa7b; }
.tok-null    { color: #ff5555; }
.tok-comment { color: #6272a4; font-style: italic; }
.tok-prop    { color: #8be9fd; }

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

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

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 22px 20px 18px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 0 12px var(--accent-glow);
}

.sidebar-logo-text {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}
.sidebar-logo-text span {
  color: var(--accent-soft);
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-section-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 12px 8px 6px;
  margin-top: 8px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 450;
  transition: all var(--transition);
  position: relative;
  text-decoration: none;
}

.sidebar-nav a .nav-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-nav a:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.sidebar-nav a.active {
  background: var(--accent-dim);
  color: var(--accent-soft);
  font-weight: 550;
}
.sidebar-nav a.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
}

.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid var(--border);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: var(--radius-md);
  transition: background var(--transition);
  cursor: pointer;
}
.sidebar-user:hover { background: var(--bg-hover); }

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #1a3b8a);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-email {
  font-size: 12px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Main content area ─────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.page-header {
  padding: 28px 32px 0;
  margin-bottom: 28px;
}
.page-title { font-size: 22px; font-weight: 700; }
.page-desc  { font-size: 14px; color: var(--text-muted); margin-top: 4px; }

.page-content { padding: 0 32px 40px; }

/* ── Grid helpers ──────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ── Section panels ────────────────────────────────────────── */
.section { display: none; }
.section.active { display: block; }

/* ── Divider ───────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

/* ── Loading spinner ───────────────────────────────────────── */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-soft);
  border-top-color: var(--accent-soft);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px;
  color: var(--text-muted);
  font-size: 14px;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
  font-size: 14px;
}
.empty-state-icon { font-size: 2.5rem; margin-bottom: 12px; }

/* ── Dialog / Modal ────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(4px);
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-xl);
  padding: 32px;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95) translateY(16px);
  transition: transform var(--transition);
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.modal-desc  { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 24px; }

/* ── Key reveal input ──────────────────────────────────────── */
.key-display {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-base);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-soft);
}
.key-display span { flex: 1; word-break: break-all; }

/* ── Tabs ──────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: 4px;
  width: fit-content;
  margin-bottom: 24px;
}
.tab-btn {
  padding: 7px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border: none;
  background: transparent;
  font-family: var(--font);
  transition: all var(--transition);
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* ── Hamburger (mobile) ────────────────────────────────────── */
.hamburger {
  display: none;
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 200;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ── Animations ────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeIn 0.4s ease forwards; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}
.pulse { animation: pulse 2s ease-in-out infinite; }

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

.docs-sidebar {
  width: 260px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  flex-shrink: 0;
  padding: 24px 0;
}

.docs-content {
  flex: 1;
  max-width: 860px;
  padding: 40px 48px;
  overflow-x: hidden;
}

.docs-nav { padding: 0 12px; }
.docs-nav-section {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 16px 8px 6px;
}
.docs-nav a {
  display: block;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.docs-nav a:hover { background: var(--bg-hover); color: var(--text-primary); }
.docs-nav a.active { color: var(--accent-soft); background: var(--accent-dim); }

.endpoint-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}
.endpoint-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.method-badge {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}
.method-post { background: rgba(68,136,255,0.12); color: var(--accent-soft); border: 1px solid rgba(68,136,255,0.25); }
.method-get  { background: rgba(34,197,94,0.1); color: var(--success); border: 1px solid rgba(34,197,94,0.25); }

.endpoint-path {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
}

.endpoint-body { padding: 20px; }

.params-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 12px; }
.params-table th {
  background: transparent;
  color: var(--text-muted);
  font-size: 11px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  letter-spacing: 0.06em;
}
.params-table td { padding: 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
.params-table tr:last-child td { border-bottom: none; }
.param-name { font-family: var(--font-mono); color: var(--accent-soft); }
.param-type { font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); }
.param-req  { color: var(--danger); font-size: 11px; font-weight: 600; }

.playground-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.playground-header {
  padding: 16px 20px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}
.playground-body { padding: 24px; display: flex; flex-direction: column; gap: 16px; }
.playground-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.playground-response {
  background: #0d0d14;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: #c9d1d9;
  min-height: 120px;
  max-height: 400px;
  overflow-y: auto;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── Landing page ──────────────────────────────────────────── */
.landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 32px 16px;
}

.landing-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.landing-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  background-size: 200px;
  opacity: 0.4;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 8s ease-in-out infinite;
}
.orb-1 {
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(15, 45, 160, 0.1) 0%, transparent 70%);
  top: -200px; left: -150px;
  animation-duration: 12s;
}
.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(8, 25, 100, 0.07) 0%, transparent 70%);
  bottom: -120px; right: -100px;
  animation-duration: 15s;
  animation-delay: -4s;
}
.orb-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(30, 70, 200, 0.05) 0%, transparent 70%);
  top: 35%; left: 45%;
  animation-duration: 18s;
  animation-delay: -8s;
}

@keyframes orbFloat {
  0%,100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(30px, -20px) scale(1.04); }
  66%      { transform: translate(-20px, 15px) scale(0.97); }
}

.landing-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  background: rgba(17,17,24,0.85);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg), 0 0 80px rgba(5,10,60,0.6);
}

.landing-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
}

.landing-logo-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.landing-brand {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.landing-brand span { color: var(--accent-soft); }

.landing-tagline {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 32px;
  letter-spacing: 0.08em;
}

.auth-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.auth-tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--transition);
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
  font-family: var(--font);
}
.auth-tab:hover { color: var(--text-primary); }
.auth-tab.active { color: var(--accent-soft); border-bottom-color: var(--accent); }

.auth-form { display: flex; flex-direction: column; gap: 16px; }
.auth-form.hidden { display: none; }

.auth-separator {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  position: relative;
  margin: 8px 0;
}
.auth-separator::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  border-top: 1px solid var(--border);
}
.auth-separator span { background: rgba(17,17,24,0.85); padding: 0 10px; position: relative; }

.already-logged-in {
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 1280px) {
  :root { --sidebar-width: 220px; }
  .page-header { padding: 24px 24px 0; }
  .page-content { padding: 0 24px 32px; }
}

@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }
  .main-content {
    margin-left: 0;
  }
  .hamburger { display: flex; }
  .page-header { padding: 24px 20px 0; }
  .page-content { padding: 0 20px 40px; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }

  .docs-sidebar { display: none; }
  .docs-content { padding: 24px 20px; }
  .playground-row { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .grid-4 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .landing-card { padding: 28px 20px; }
  h1 { font-size: 1.75rem; }
}