/* ── Theme System ── */

[data-theme="light"] {
  --bg: #ffffff;
  --bg-secondary: #f8f9fc;
  --surface: #ffffff;
  --surface-hover: #f0f2f7;
  --surface-elevated: #f4f6fb;
  --surface-active: #e8ecf4;

  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.12);
  --border-strong: rgba(0, 0, 0, 0.16);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-disabled: #cbd5e1;

  --glass: rgba(0, 0, 0, 0.02);
  --glass-hover: rgba(0, 0, 0, 0.04);
  --glass-strong: rgba(0, 0, 0, 0.06);
  --glass-light: rgba(0, 0, 0, 0.03);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 56px rgba(0, 0, 0, 0.14);

  --header-bg: rgba(255, 255, 255, 0.92);
  --sidebar-bg: var(--bg-secondary);
}

[data-theme="dark"] {
  --header-bg: rgba(11, 15, 26, 0.95);
  --sidebar-bg: var(--bg-secondary);
}

/* ── Theme Toggle Button ── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  background: var(--glass-hover);
  border-color: var(--border-hover);
  color: var(--text-primary);
}
.theme-toggle .icon {
  font-size: 14px;
}

/* ── Background Transition ── */
body, .app-header, .tab-nav, .card, .panel, .modal-content {
  transition: background-color var(--transition-slow), color var(--transition-slow), border-color var(--transition-slow);
}

/* ── Light Theme Specific Overrides ── */
[data-theme="light"] body::before {
  background: radial-gradient(ellipse 80% 60% at 20% 10%, rgba(124, 92, 255, 0.04), transparent 60%),
              radial-gradient(ellipse 60% 50% at 80% 80%, rgba(59, 130, 246, 0.03), transparent 50%);
}

[data-theme="light"] .app-header {
  background: var(--header-bg);
  border-bottom-color: var(--border);
}

[data-theme="light"] .app-header::after {
  background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
}

[data-theme="light"] .brand-text .name {
  color: var(--text-primary);
}

[data-theme="light"] .brand-text .sub {
  color: var(--text-muted);
}

[data-theme="light"] .tab-nav {
  background: var(--surface);
  border-right-color: var(--border);
}

[data-theme="light"] .main-wrap {
  background: radial-gradient(1200px 800px at 20% -10%, rgba(124, 92, 255, 0.08), transparent 60%),
              radial-gradient(1000px 700px at 80% 10%, rgba(59, 130, 246, 0.06), transparent 55%);
}

[data-theme="light"] .tab-btn {
  color: var(--text-secondary);
}

[data-theme="light"] .tab-btn:hover {
  color: var(--text-primary);
  background: var(--glass-hover);
}

[data-theme="light"] .tab-btn.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.35), rgba(59, 130, 246, 0.25));
  border: 1px solid rgba(124, 92, 255, 0.35);
}

[data-theme="light"] .nav-category-header {
  color: var(--text-primary);
}

[data-theme="light"] .nav-category-items .tab-btn {
  color: var(--text-muted);
}

[data-theme="light"] .nav-category-items .tab-btn:hover {
  color: var(--text-primary);
}

[data-theme="light"] .glass-card {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="light"] .btn {
  background: var(--surface-elevated);
  border-color: var(--border);
  color: var(--text-primary);
}

[data-theme="light"] .btn:hover {
  background: var(--surface-active);
}

[data-theme="light"] ::-webkit-scrollbar-thumb {
  background: var(--border-strong);
}

/* ── Light Theme Overrides for Patch CSS ── */

[data-theme="light"] .app-header .btn,
[data-theme="light"] .header-tab-btn {
  background: var(--surface-elevated);
  border-color: var(--border);
  color: var(--text-secondary);
}

[data-theme="light"] .app-header .btn:hover,
[data-theme="light"] .header-tab-btn:hover {
  background: var(--surface-active);
  border-color: var(--border-hover);
}

[data-theme="light"] .user-display {
  color: var(--text-muted);
}

[data-theme="light"] .mobile-menu-toggle {
  box-shadow: 0 4px 20px rgba(124, 92, 255, 0.3);
}

[data-theme="light"] .nav-category-items .tab-btn.active {
  background: var(--accent-muted);
}

[data-theme="light"] .toggle-all-categories-btn:hover {
  color: var(--text-primary);
}

[data-theme="light"] .loading-overlay {
  background: rgba(255, 255, 255, 0.85);
}

[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* ── Light Theme: Fix hardcoded rgba in patch CSS ── */
[data-theme="light"] table::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .modal-overlay {
  background: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .panel-header {
  border-bottom-color: var(--border);
}

[data-theme="light"] .data-table th {
  background: var(--surface-active);
}

[data-theme="light"] .data-table tbody tr:hover {
  background: var(--glass-hover);
}

[data-theme="light"] .table-container {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="light"] .form-group .field-label {
  color: var(--text-primary);
}

[data-theme="light"] .skeleton {
  background: linear-gradient(90deg, var(--glass) 0%, var(--glass-light) 50%, var(--glass) 100%);
}

[data-theme="light"] .toast {
  background: var(--surface-elevated);
  border-color: var(--border);
}

[data-theme="light"] .loading-overlay {
  background: rgba(255, 255, 255, 0.9);
}

/* ── Light Theme: design-improvements.css hardcoded fixes ── */
[data-theme="light"] .di-favs-empty {
  border-color: rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .tab-btn-external {
  background: rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .tab-btn-external:hover {
  background: rgba(124, 92, 255, 0.08);
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

@keyframes slideOut {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px var(--accent-glow); }
  50% { box-shadow: 0 0 20px var(--accent-glow); }
}