:root {
    color-scheme: light;
    --toggle-track: #cbd5f5;
    --toggle-thumb: #2563eb;
}

:root[data-theme='dark'] {
    color-scheme: dark;
    --primary-color: #60a5fa;
    --primary-hover: #3b82f6;
    --secondary-color: #94a3b8;
    --background: #0b1220;
    --card-background: #454a54;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --border-color: #1f2937;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.45), 0 1px 4px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 18px rgba(0, 0, 0, 0.5), 0 6px 12px rgba(0, 0, 0, 0.35);
    --toggle-track: #1e293b;
    --toggle-thumb: #e2e8f0;
}

.header-nav {
    margin-left: auto;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.35rem;
    min-width: 44px;
    min-height: 44px;
}

.theme-toggle:hover {
    color: var(--primary-color);
}

.theme-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.theme-icon svg {
    display: block;
}

:root[data-theme='dark'] body {
    background: var(--background);
    color: var(--text-primary);
}

/* Only the main page header (navbar), not app card headers */
:root[data-theme='dark'] body > header {
    background: #4a5469;
}

:root[data-theme='dark'] .app-card .app-header {
    background: transparent;
}

:root[data-theme='dark'] .app-card {
    background: #454a54 !important;
}

:root[data-theme='dark'] .app-card .app-title,
:root[data-theme='dark'] .app-card .app-description,
:root[data-theme='dark'] .app-card .app-link,
:root[data-theme='dark'] .app-card .platform-label {
    color: #fafafa !important;
}

/* Search bar dark mode – single surface, no borders on input */
:root[data-theme='dark'] .search-input-group {
    background: #4a5469;
    border-color: var(--border-color);
    box-shadow: var(--shadow);
}

:root[data-theme='dark'] .search-input-wrap {
    background: #4a5469;
}

:root[data-theme='dark'] #searchInput {
    color: var(--text-primary);
}

:root[data-theme='dark'] #searchInput::placeholder {
    color: var(--text-secondary);
}

:root[data-theme='dark'] .search-mode-selector,
:root[data-theme='dark'] #searchButton {
    color: var(--text-secondary);
}

:root[data-theme='dark'] .search-mode-selector:hover,
:root[data-theme='dark'] #searchButton:hover {
    color: var(--primary-color);
}

/* Category combo dark mode – same look as search bar */
:root[data-theme='dark'] .category-combo {
    background: #4a5469;
    border-color: var(--border-color);
    box-shadow: var(--shadow);
}

:root[data-theme='dark'] .category-combo-input {
    background: transparent;
    color: var(--text-primary);
}

:root[data-theme='dark'] .category-combo-input::placeholder {
    color: var(--text-secondary);
}

:root[data-theme='dark'] .category-combo-icon,
:root[data-theme='dark'] .category-combo-chevron {
    color: var(--text-secondary);
}

:root[data-theme='dark'] .category-combo-chevron:hover {
    color: var(--text-primary);
}

:root[data-theme='dark'] .category-combo-dropdown {
    background: var(--card-background);
    border-color: var(--border-color);
}

:root[data-theme='dark'] .category-combo-option {
    color: var(--text-primary);
}

:root[data-theme='dark'] .category-combo-option:hover,
:root[data-theme='dark'] .category-combo-option--active {
    background: rgba(96, 165, 250, 0.15);
    color: var(--primary-color);
}

/* Button group dark mode */
:root[data-theme='dark'] .btn-group-btn:not(.is-active) {
    color: var(--text-primary);
}
:root[data-theme='dark'] .btn-group-btn:not(.is-active):hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}
:root[data-theme='dark'] .btn-group-btn.is-active {
    background: #334155;
    color: var(--text-primary);
}
:root[data-theme='dark'] .btn-group-btn.is-active:hover:not(:disabled) {
    background: #475569;
}
:root[data-theme='dark'] .button-group-label {
    color: var(--text-secondary);
}

:root[data-theme='dark'] .results-message--error {
    color: #f87171;
}

:root[data-theme='dark'] .request-guide-dialog,
:root[data-theme='dark'] .drawer-panel,
:root[data-theme='dark'] .drawer-dropdown {
    background: var(--card-background);
    color: var(--text-primary);
    border-color: var(--border-color);
}

:root[data-theme='dark'] .drawer-overlay {
    background: rgba(2, 6, 23, 0.7);
}

:root[data-theme='dark'] .request-guide-textarea,
:root[data-theme='dark'] .request-guide-select,
:root[data-theme='dark'] .drawer-input,
:root[data-theme='dark'] input,
:root[data-theme='dark'] textarea,
:root[data-theme='dark'] select {
    background: #0f172a;
    color: var(--text-primary);
    border-color: var(--border-color);
}

:root[data-theme='dark'] .request-guide-textarea::placeholder,
:root[data-theme='dark'] .drawer-input::placeholder {
    color: #94a3b8;
}

:root[data-theme='dark'] .bg-white {
    background-color: var(--card-background) !important;
}

:root[data-theme='dark'] .bg-slate-50 {
    background-color: #0f172a !important;
}

:root[data-theme='dark'] .bg-slate-100 {
    background-color: #111827 !important;
}

:root[data-theme='dark'] .border-slate-200 {
    border-color: var(--border-color) !important;
}

:root[data-theme='dark'] .border-slate-900 {
    border-color: #0b1220 !important;
}

:root[data-theme='dark'] .text-slate-900 {
    color: var(--text-primary) !important;
}

:root[data-theme='dark'] .text-slate-700 {
    color: #cbd5f5 !important;
}

:root[data-theme='dark'] .text-slate-600 {
    color: var(--text-secondary) !important;
}

:root[data-theme='dark'] .text-slate-500 {
    color: #94a3b8 !important;
}

:root[data-theme='dark'] .text-blue-600 {
    color: #93c5fd !important;
}

:root[data-theme='dark'] .text-blue-700 {
    color: #60a5fa !important;
}

:root[data-theme='dark'] .share-card {
    background: #0f172a !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}