/* ═══════════════════════════════════════════════════════════
   TokenHub — Quantum Terminal Design System
   ═══════════════════════════════════════════════════════════ */

/* ── Design Tokens ──────────────────────────────────────── */
:root {
  --bg-base: #0a0b12;
  --bg-surface: #13152a;
  --bg-elevated: #1a1d36;
  --bg-hover: #21253f;
  --border-subtle: rgba(255,255,255,0.06);
  --border-default: rgba(255,255,255,0.10);
  --border-active: rgba(0,245,212,0.30);

  --accent: #00f5d4;
  --accent-dim: rgba(0,245,212,0.08);
  --accent-glow: rgba(0,245,212,0.15);
  --amber: #ffd60a;
  --amber-dim: rgba(255,214,10,0.08);
  --amber-border: rgba(255,214,10,0.15);
  --danger: #ff4757;
  --danger-dim: rgba(255,71,87,0.08);
  --danger-border: rgba(255,71,87,0.2);
  --success: #00f5d4;
  --warning: #ffa502;

  --text-primary: #e8e9f0;
  --text-secondary: #8b8da3;
  --text-muted: #5a5d75;

  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 24px rgba(0,245,212,0.08);

  --topbar-bg: rgba(19,21,42,0.8);
  --overlay-bg: rgba(0,0,0,0.6);
  --grid-line: rgba(255,255,255,0.015);

  --sidebar-w: 248px;
  --topbar-h: 64px;

  --font-display: 'Sora', system-ui, sans-serif;
  --font-body: 'Manrope', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', monospace;
}

/* ── Light Theme ─────────────────────────────────────────── */
html[data-theme="light"] {
  --bg-base: #f4f6fa;
  --bg-surface: #ffffff;
  --bg-elevated: #edf0f6;
  --bg-hover: #e5e9f2;
  --border-subtle: rgba(23,32,62,0.07);
  --border-default: rgba(23,32,62,0.13);
  --border-active: rgba(0,163,140,0.38);

  --accent: #00a393;
  --accent-dim: rgba(0,163,140,0.10);
  --accent-glow: rgba(0,163,140,0.16);
  --amber: #c8860a;
  --amber-dim: rgba(200,134,10,0.10);
  --amber-border: rgba(200,134,10,0.22);
  --danger: #e02d3c;
  --danger-dim: rgba(224,45,60,0.09);
  --danger-border: rgba(224,45,60,0.25);
  --success: #00a393;
  --warning: #b26b00;

  --text-primary: #1f2337;
  --text-secondary: #555d7a;
  --text-muted: #939bb3;

  --shadow: 0 4px 24px rgba(24,34,74,0.10);
  --shadow-glow: 0 0 24px rgba(0,163,140,0.14);

  --topbar-bg: rgba(255,255,255,0.82);
  --overlay-bg: rgba(23,32,62,0.45);
  --grid-line: rgba(23,32,62,0.035);
}

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

html { font-size: 15px; scroll-behavior: smooth; }

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

/* Subtle grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

/* ── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ═══════════════════════════════════════════════════════════
   Layout
   ═══════════════════════════════════════════════════════════ */

.app-shell {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-brand {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-brand .logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #00b4d8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--bg-base);
  flex-shrink: 0;
}

.sidebar-brand .brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.sidebar-brand .brand-text span {
  color: var(--accent);
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 0 12px 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  text-decoration: none;
}

.nav-item.active {
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 600;
}

.nav-item .nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.8;
}

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

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

.topbar {
  height: var(--topbar-h);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--topbar-bg);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
}

.balance-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 20px;
  background: var(--amber-dim);
  border: 1px solid var(--amber-border);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
}

.balance-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 6px var(--amber);
}

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

.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 6px;
  border-radius: 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  cursor: pointer;
  transition: border-color 0.2s;
}

.user-chip:hover {
  border-color: var(--border-active);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #00b4d8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  color: var(--bg-base);
}

.user-chip .username {
  font-size: 13px;
  font-weight: 500;
}

/* ── Theme Toggle ───────────────────────────────────────── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
  padding: 0;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--border-active);
  background: var(--bg-hover);
}

.theme-toggle svg {
  display: block;
  pointer-events: none;
}

.auth-theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 50;
}

/* 登录/注册页左上角「返回首页」链接 */
.auth-back {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 50;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-md, 10px);
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  transition: color .2s, border-color .2s;
}

.auth-back:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.content {
  flex: 1;
  padding: 32px;
  max-width: 1400px;
  width: 100%;
}

/* Mobile sidebar toggle */
.mobile-toggle {
  display: none;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  z-index: 99;
  backdrop-filter: blur(2px);
}

/* ═══════════════════════════════════════════════════════════
   Components
   ═══════════════════════════════════════════════════════════ */

/* ── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s;
}

.card-hover:hover {
  border-color: var(--border-default);
  transform: translateY(-2px);
}

.card-glow:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-glow);
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-base);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border-default);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--border-active);
}

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

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border-color: var(--danger-border);
}

.btn-danger:hover:not(:disabled) {
  background: rgba(255,71,87,0.15);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

/* ── Forms ──────────────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-base);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

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

.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
}

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

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

th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 14px;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: var(--bg-hover);
}

/* ── Badges ─────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.badge-pending { background: rgba(255,165,2,0.1); color: var(--warning); }
.badge-pending .dot { background: var(--warning); }
.badge-paid { background: var(--accent-dim); color: var(--accent); }
.badge-paid .dot { background: var(--accent); }
.badge-cancelled { background: var(--danger-dim); color: var(--danger); }
.badge-cancelled .dot { background: var(--danger); }
.badge-refunded { background: rgba(139,141,163,0.1); color: var(--text-secondary); }
.badge-refunded .dot { background: var(--text-secondary); }
.badge-active { background: var(--accent-dim); color: var(--accent); }
.badge-active .dot { background: var(--accent); }
.badge-inactive { background: var(--danger-dim); color: var(--danger); }
.badge-inactive .dot { background: var(--danger); }
.badge-admin { background: rgba(255,214,10,0.1); color: var(--amber); }
.badge-admin .dot { background: var(--amber); }

/* ── Toast ──────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toast-in 0.3s ease;
  pointer-events: auto;
  max-width: 360px;
}

.toast-success { border-left: 3px solid var(--accent); }
.toast-error { border-left: 3px solid var(--danger); }
.toast-info { border-left: 3px solid #00b4d8; }

@keyframes toast-in {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ── Modal ──────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fade-in 0.2s ease;
}

.modal-overlay.hidden { display: none; }

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  animation: modal-in 0.3s ease;
}

.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  cursor: pointer;
  color: var(--text-muted);
  font-size: 22px;
  line-height: 1;
  padding: 4px;
}

.modal-close:hover { color: var(--text-primary); }

.modal-body { padding: 24px; }

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-in {
  from { transform: scale(0.95) translateY(10px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

/* ── Loading ────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-default);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-lg { width: 40px; height: 40px; border-width: 3px; }

.loading-center {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  gap: 12px;
  color: var(--text-muted);
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Misc ───────────────────────────────────────────────── */
.mono { font-family: var(--font-mono); }
.text-accent { color: var(--accent); }
.text-amber { color: var(--amber); }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--danger); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 12px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.font-bold { font-weight: 700; }
.mt-0 { margin-top: 0; } .mt-2 { margin-top: 8px; } .mt-4 { margin-top: 16px; } .mt-6 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; } .mb-2 { margin-bottom: 8px; } .mb-4 { margin-bottom: 16px; } .mb-6 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; } .gap-4 { gap: 16px; } .gap-6 { gap: 24px; }
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); gap: 16px; }
.w-full { width: 100%; }
.hidden { display: none !important; }

.copy-btn {
  cursor: pointer;
  color: var(--text-muted);
  transition: color 0.15s;
  padding: 2px 6px;
  border-radius: 4px;
}

.copy-btn:hover { color: var(--accent); background: var(--accent-dim); }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state .icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.3;
}

/* ═══════════════════════════════════════════════════════════
   Landing Page
   ═══════════════════════════════════════════════════════════ */

.landing {
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.landing-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border-subtle);
}

.landing-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
}

.landing-brand .logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #00b4d8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--bg-base);
}

.landing-nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.landing-hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 100px 48px 80px;
  text-align: center;
}

.landing-hero h1 {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
}

.landing-hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--accent), #00b4d8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.landing-hero p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.landing-hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.landing-features {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 48px 80px;
}

.section-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 48px;
  font-size: 16px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.2s;
}

.feature-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.landing-models {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 48px 80px;
}

.landing-cta {
  text-align: center;
  padding: 80px 48px;
  border-top: 1px solid var(--border-subtle);
}

.landing-footer {
  text-align: center;
  padding: 32px 48px;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid var(--border-subtle);
}

.app-footer {
  margin-top: 32px;
  padding: 20px 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid var(--border-subtle);
}

/* ═══════════════════════════════════════════════════════════
   Auth Pages
   ═══════════════════════════════════════════════════════════ */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  position: relative;
  z-index: 1;
}

.auth-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 440px;
  width: 100%;
  box-shadow: var(--shadow);
}

.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
  cursor: pointer;
}

.auth-logo .logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #00b4d8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  color: var(--bg-base);
}

.auth-logo .brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
}

.auth-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}

.auth-link {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════════
   Dashboard
   ═══════════════════════════════════════════════════════════ */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.stat-card:hover::before { opacity: 1; }

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-bottom: 8px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.stat-value .unit {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 4px;
}

/* ── Model Cards ────────────────────────────────────────── */
.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.model-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.2s;
  position: relative;
}

.model-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.model-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.model-provider-tag {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--bg-elevated);
  color: var(--text-secondary);
}

.model-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.model-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  min-height: 40px;
}

.model-prices {
  display: flex;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.model-price-item {
  flex: 1;
}

.model-price-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.model-price-value {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--amber);
}

.model-price-value .unit {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

.model-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.model-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 500;
}

/* ── Plan Cards ──────────────────────────────────────────── */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.plan-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: all 0.2s;
  position: relative;
}

.plan-card:hover {
  border-color: var(--border-default);
  transform: translateY(-4px);
}

.plan-card.featured {
  border-color: var(--border-active);
  box-shadow: var(--shadow-glow);
}

.plan-card .featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--bg-base);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.plan-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.plan-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.plan-price {
  margin-bottom: 8px;
}

.plan-price .amount {
  font-family: var(--font-mono);
  font-size: 42px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.plan-price .currency {
  font-size: 18px;
  color: var(--amber);
  margin-right: 4px;
}

.plan-quota {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 4px;
}

.plan-validity {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ── Code Block ─────────────────────────────────────────── */
.code-block {
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  word-break: break-all;
}

.code-block .key-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Page Header ─────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ── Section ─────────────────────────────────────────────── */
.section {
  margin-bottom: 32px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.section-header h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
}

/* ═══════════════════════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-overlay.show {
    display: block;
  }
  .main-area {
    margin-left: 0;
  }
  .mobile-toggle {
    display: flex;
  }
  .content {
    padding: 20px;
  }
  .landing-nav,
  .landing-hero,
  .landing-features,
  .landing-models,
  .landing-cta,
  .landing-footer {
    padding-left: 20px;
    padding-right: 20px;
  }
  .landing-hero {
    padding-top: 60px;
    padding-bottom: 40px;
  }
  .landing-hero h1 {
    font-size: 36px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .stat-grid {
    grid-template-columns: 1fr;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  .topbar {
    padding: 0 16px;
  }
  .topbar-title {
    font-size: 16px;
  }
  .balance-pill {
    display: none;
  }
  .model-grid {
    grid-template-columns: 1fr;
  }
}