html { height: auto; min-height: 100%; overflow-x: hidden; overflow-y: auto; }
body.index-body { height: auto; min-height: 100%; overflow-x: hidden; overflow-y: auto; overscroll-behavior-y: contain; }
.index-page { position: relative; min-height: 100vh; display: flex; flex-direction: column; overflow: visible; }

.bg-layer { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.bg-layer canvas { width: 100%; height: 100%; display: block; }
.bg-vignette {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 30%, transparent 0%, rgba(15,10,26,0.35) 50%, rgba(15,10,26,0.85) 100%);
}

.top-bar {
  position: relative; z-index: var(--z-sticky);
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(var(--space-4) + env(safe-area-inset-top)) var(--space-5) var(--space-3);
  flex-shrink: 0;
}
.top-badges { display: flex; align-items: center; gap: var(--space-2); }
.version-tag {
  font-size: var(--text-xs); font-weight: var(--weight-semibold);
  padding: 3px 10px; border-radius: var(--radius-full);
  color: var(--color-accent); background: var(--color-accent-dim);
  letter-spacing: 0.03em;
}
.api-badge {
  font-size: var(--text-xs); font-weight: var(--weight-medium);
  padding: 3px 10px; border-radius: var(--radius-full);
  color: var(--text-tertiary); background: var(--bg-highlight);
}
.api-badge.central { color: var(--color-primary); background: var(--color-primary-dim); }
.api-badge.offline { color: #f87171; background: rgba(248,113,113,0.1); }
.top-actions { display: flex; gap: var(--space-1); }
.icon-btn {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full); color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-in-out);
}
.icon-btn:hover { background: var(--bg-highlight); color: var(--text-primary); }

.index-content {
  position: relative; z-index: var(--z-base);
  display: flex; flex-direction: column; gap: var(--space-8);
  padding: var(--space-6) var(--space-5);
  max-width: 440px; margin: 0 auto; width: 100%;
}

/* Logo */
.logo-area {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: var(--space-3);
  padding: var(--space-6) 0 var(--space-2);
}
.brand-logo {
  width: 80px; height: 80px; border-radius: 20px;
  background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.05));
  border: 1px solid rgba(139, 92, 246, 0.15);
  display: grid; place-items: center;
  position: relative; overflow: hidden;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.12);
  animation: glowPulse 4s ease-in-out infinite;
}
.brand-logo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(139,92,246,0.06), transparent 60%);
}
.logo-svg { width: 44px; height: 44px; position: relative; z-index: 1; }
.app-title {
  font-size: var(--text-2xl); font-weight: var(--weight-black);
  letter-spacing: -0.02em; line-height: 1.15; color: var(--text-primary);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.app-subtitle {
  font-size: var(--text-sm); color: var(--text-tertiary);
  font-weight: var(--weight-medium); letter-spacing: 0.03em;
}

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-2); }
.stat-card { text-align: center; }
.stat-num {
  font-size: var(--text-xl); font-weight: var(--weight-bold);
  color: var(--text-primary); letter-spacing: -0.02em; line-height: 1.2;
}
.stat-lbl {
  font-size: var(--text-xs); color: var(--text-tertiary);
  font-weight: var(--weight-medium); margin-top: 2px;
}
.stat-icon { display: none; }

/* Action buttons */
.action-buttons { display: flex; gap: var(--space-3); }
.btn-primary, .btn-secondary { flex: 1; }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-5); border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), #7c3aed);
  color: #fff; font-weight: var(--weight-bold); font-size: var(--text-base);
  min-height: 48px; transition: all var(--duration-fast) var(--ease-out);
  box-shadow: 0 2px 12px rgba(139, 92, 246, 0.25);
}
.btn-primary:hover { opacity: 0.92; box-shadow: 0 4px 20px rgba(139, 92, 246, 0.35); }
.btn-primary:active { transform: scale(0.97); }
.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-5); border-radius: var(--radius-full);
  background: transparent; color: var(--text-primary);
  font-weight: var(--weight-semibold); font-size: var(--text-base);
  border: 1px solid var(--border-strong); min-height: 48px;
  transition: all var(--duration-fast) var(--ease-out);
}
.btn-secondary:hover { background: var(--bg-highlight); border-color: var(--color-primary); }
.btn-icon { display: flex; }
.btn-arrow { display: flex; opacity: 0.5; }

/* Status */
.status-bar {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface); border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle); font-size: var(--text-sm); color: var(--text-tertiary);
}
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--text-disabled); flex-shrink: 0; }
.status-dot.online { background: var(--color-primary); box-shadow: 0 0 8px rgba(139, 92, 246, 0.5); }
.status-dot.error { background: #f87171; }
.status-dot.loading { background: var(--color-accent); animation: breathe 1.2s ease-in-out infinite; }

/* Footer */
.bottom-bar {
  position: relative; z-index: var(--z-base);
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-2); padding: var(--space-4) var(--space-5);
  font-size: var(--text-xs); color: var(--text-disabled); flex-shrink: 0;
}
.sep { opacity: 0.3; }

/* Settings */
.settings-panel { top: 56px; right: var(--space-4); }
.settings-panel {
  background: var(--bg-elevated); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); padding: var(--space-2) 0;
  z-index: var(--z-overlay); min-width: 280px;
  backdrop-filter: blur(20px); display: none;
  box-shadow: var(--shadow-xl);
}
.settings-panel.active { display: block; animation: fadeIn var(--duration-fast) var(--ease-out); }
.settings-header {
  padding: var(--space-3) var(--space-4) var(--space-1);
  font-size: var(--text-xs); font-weight: var(--weight-semibold);
  color: var(--text-tertiary); letter-spacing: 0.06em; text-transform: uppercase;
  border-bottom: 1px solid var(--border-subtle); margin-bottom: var(--space-1);
}
.settings-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4); cursor: pointer;
  transition: background var(--duration-fast) var(--ease-in-out); font-size: var(--text-base);
}
.settings-item:hover { background: var(--bg-highlight); }
.settings-icon { color: var(--text-tertiary); display: flex; flex-shrink: 0; }
.settings-val { margin-left: auto; font-size: var(--text-sm); color: var(--text-tertiary); }
.settings-val.active { color: var(--color-primary); }

/* Responsive */
@media (max-width: 480px) {
  .index-content { padding: var(--space-5) var(--space-4); gap: var(--space-6); }
  .logo-area { padding: var(--space-4) 0 var(--space-1); }
  .brand-logo {
  width: 80px; height: 80px; border-radius: 22px;
  background: linear-gradient(145deg, rgba(139,92,246,0.12), rgba(99,102,241,0.04));
  border: 1px solid rgba(139, 92, 246, 0.18);
  display: grid; place-items: center;
  position: relative; overflow: hidden;
  box-shadow: 0 4px 24px rgba(139, 92, 246, 0.10), inset 0 1px 0 rgba(255,255,255,0.04);
  animation: glowPulse 5s ease-in-out infinite;
  backdrop-filter: blur(8px);
}
.brand-logo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(145deg, rgba(139,92,246,0.08), transparent 50%, rgba(249,115,22,0.04));
}
  .logo-svg { width: 38px; height: 38px; }
  .app-title { font-size: var(--text-xl); }
  .stats-grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-1); }
  .stat-num { font-size: var(--text-lg); }
  .action-buttons { flex-direction: column; }
  .action-buttons .btn-primary, .action-buttons .btn-secondary { width: 100%; }
}
@media (min-width: 768px) {
  .index-content { max-width: 480px; padding: var(--space-10) var(--space-6); }
  .brand-logo {
  width: 80px; height: 80px; border-radius: 22px;
  background: linear-gradient(145deg, rgba(139,92,246,0.12), rgba(99,102,241,0.04));
  border: 1px solid rgba(139, 92, 246, 0.18);
  display: grid; place-items: center;
  position: relative; overflow: hidden;
  box-shadow: 0 4px 24px rgba(139, 92, 246, 0.10), inset 0 1px 0 rgba(255,255,255,0.04);
  animation: glowPulse 5s ease-in-out infinite;
  backdrop-filter: blur(8px);
}
.brand-logo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(145deg, rgba(139,92,246,0.08), transparent 50%, rgba(249,115,22,0.04));
}
  .logo-svg { width: 50px; height: 50px; }
  .app-title { font-size: var(--text-3xl); }
}