/* Theme Variables and Custom Properties */
:root {
    /* Default Light Theme */
    --primary-color: #28a745;
    --secondary-color: #6c757d;
    --accent-color: #007bff;
    --background-color: #ffffff;
    --text-color: #212529;
    --sidebar-color: #343a40;
    --card-background: #ffffff;
    --border-color: #dee2e6;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    
    /* Additional colors for better theming */
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Transparency variants */
    --primary-light: rgba(0, 123, 255, 0.1);
    --secondary-light: rgba(108, 117, 125, 0.1);
    --accent-light: rgba(40, 167, 69, 0.1);
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --accent-color: #198754;
    --background-color: #212529;
    --text-color: #ffffff;
    --sidebar-color: #1a1d20;
    --card-background: #2d3338;
    --border-color: #495057;
    
    /* Dark theme variants */
    --primary-light: rgba(13, 110, 253, 0.1);
    --secondary-light: rgba(108, 117, 125, 0.1);
    --accent-light: rgba(25, 135, 84, 0.1);
}

/* Apply theme variables to elements */
body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: var(--font-family);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Navbar theming — background is hardcoded to Rezza brand gradient in admin_layout.html.
   Only style sub-elements here so user theme doesn't override the chrome. */

.navbar-brand {
    color: white !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
}

.nav-link:hover {
    color: white !important;
}

/* Sidebar theming */
.leftside-menu {
    background-color: var(--sidebar-color);
    border-right: 1px solid var(--border-color);
}

.leftside-menu .side-nav .side-nav-item a {
    color: rgba(255, 255, 255, 0.8);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.leftside-menu .side-nav .side-nav-item a:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Cards and content areas */
.card {
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.card-header {
    background-color: var(--primary-light);
    border-bottom: 1px solid var(--border-color);
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    filter: brightness(90%);
}

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

.btn-success {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

/* Form elements */
.form-control {
    background-color: var(--card-background);
    border-color: var(--border-color);
    color: var(--text-color);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem var(--primary-light);
}

/* Tables */
.table {
    color: var(--text-color);
}

.table th {
    border-color: var(--border-color);
    background-color: var(--primary-light);
}

.table td {
    border-color: var(--border-color);
}

/* Dropdown menus */
.dropdown-menu {
    background-color: var(--card-background);
    border-color: var(--border-color);
}

.dropdown-item {
    color: var(--text-color);
}

.dropdown-item:hover {
    background-color: var(--primary-light);
    color: var(--text-color);
}

/* Modal theming */
.modal-content {
    background-color: var(--card-background);
    color: var(--text-color);
}

.modal-header {
    border-bottom-color: var(--border-color);
}

.modal-footer {
    border-top-color: var(--border-color);
}

/* Footer */
.footer {
    background-color: var(--sidebar-color);
    color: var(--text-color);
    border-top: 1px solid var(--border-color);
}

/* Custom theme application class */
.custom-theme {
    /* This class will be dynamically updated with user's custom colors */
}

/* Theme transition animations — scoped to content-area elements only.
   Applying transitions to * (including sidebar/navbar) caused a white flash
   whenever those elements were briefly hidden and reshown by JS. */
.admin-content *,
.card, .card *,
.btn, .form-control, .table, .dropdown-menu, .modal-content {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}

/* Color picker container styling */
.color-picker-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.color-picker-label {
    min-width: 120px;
    font-weight: 500;
}

.color-preview {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    display: inline-block;
}

.font-family-selector {
    min-width: 150px;
}

/* Theme preset buttons */
.theme-preset {
    padding: 10px;
    margin: 5px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
}

.theme-preset:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.theme-preset.active {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
}