/* ==========================================================================
 * File Path: wwwroot/css/main.css
 * Description: Base styles for cards, alerts, toasts, nav menus, tables, and modals.
 * Features: CSS custom properties (variables) for seamless Light/Dark mode switching.
 ========================================================================== */

/* --- Theme Variables Definition (Light Mode Default) --- */
:root {
    --bg-body: #f8f9fa;
    --bg-surface: #ffffff;
    --bg-surface-rgb: 255, 255, 255;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --border-color-translucent: rgba(0, 0, 0, 0.125);
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
    --primary-text: #ffffff;
    --card-bg: var(--bg-surface);
    --card-border: var(--border-color);
    --card-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --nav-bg: var(--bg-surface);
    --nav-text: var(--text-primary);
    --nav-hover: var(--primary-color);
    --nav-border: var(--border-color);
    --table-bg: transparent;
    --table-color: var(--text-primary);
    --table-striped-bg: rgba(0, 0, 0, 0.03);
    --table-hover-bg: rgba(0, 0, 0, 0.075);
    --table-border: var(--border-color);
    --modal-bg: var(--bg-surface);
    --modal-border: var(--border-color);
    --modal-backdrop: rgba(0, 0, 0, 0.5);
    --toast-bg: var(--bg-surface);
    --toast-color: var(--text-primary);
    --toast-border: var(--border-color);
}

/* --- Dark Theme Overrides (Activated via data-bs-theme="dark" or class="dark-mode") --- */
[data-bs-theme="dark"], body.dark-mode {
    --bg-body: #121212;
    --bg-surface: #1e1e1e;
    --bg-surface-rgb: 30, 30, 30;
    --text-primary: #f8f9fa;
    --text-secondary: #adb5bd;
    --text-muted: #6c757d;
    --border-color: #2d2d2d;
    --border-color-translucent: rgba(255, 255, 255, 0.15);
    --primary-color: #3d8bfd;
    --primary-hover: #6ea8fe;
    --primary-text: #000000;
    --card-bg: var(--bg-surface);
    --card-border: var(--border-color);
    --card-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.3);
    --nav-bg: var(--bg-surface);
    --nav-text: var(--text-primary);
    --nav-hover: var(--primary-hover);
    --nav-border: var(--border-color);
    --table-bg: transparent;
    --table-color: var(--text-primary);
    --table-striped-bg: rgba(255, 255, 255, 0.03);
    --table-hover-bg: rgba(255, 255, 255, 0.075);
    --table-border: var(--border-color);
    --modal-bg: var(--bg-surface);
    --modal-border: var(--border-color);
    --modal-backdrop: rgba(0, 0, 0, 0.75);
    --toast-bg: var(--bg-surface);
    --toast-color: var(--text-primary);
    --toast-border: var(--border-color);
}

/* --- Global Base Styles --- */
body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
    margin: 0;
    padding: 0;
}

/* --- Cards --- */
.card {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    box-shadow: var(--card-shadow);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card-header, .card-footer {
    background-color: rgba(var(--bg-surface-rgb), 0.03);
    border-color: var(--card-border);
}

/* --- Alerts --- */
.alert {
    border: 1px solid transparent;
    border-radius: 0.375rem;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.alert-primary {
    background-color: rgba(13, 110, 253, 0.1);
    color: var(--text-primary);
    border-color: rgba(13, 110, 253, 0.2);
}

.alert-success {
    background-color: rgba(25, 135, 84, 0.1);
    color: var(--text-primary);
    border-color: rgba(25, 135, 84, 0.2);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--text-primary);
    border-color: rgba(255, 193, 7, 0.2);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--text-primary);
    border-color: rgba(220, 53, 69, 0.2);
}

/* --- Toasts --- */
.toast {
    background-color: var(--toast-bg);
    color: var(--toast-color);
    border: 1px solid var(--toast-border);
    box-shadow: var(--card-shadow);
}

.toast-header {
    background-color: rgba(var(--bg-surface-rgb), 0.05);
    color: var(--toast-color);
    border-bottom: 1px solid var(--toast-border);
}

/* --- Navigation Menus --- */
.navbar, .nav-menu {
    background-color: var(--nav-bg) !important;
    color: var(--nav-text);
    border-bottom: 1px solid var(--nav-border);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

    .navbar .nav-link, .nav-menu .nav-link {
        color: var(--nav-text);
        transition: color 0.2s ease;
    }

        .navbar .nav-link:hover, .navbar .nav-link:focus,
        .nav-menu .nav-link:hover, .nav-menu .nav-link:focus {
            color: var(--nav-hover);
        }

/* --- Tables --- */
.table {
    --bs-table-bg: var(--table-bg);
    --bs-table-color: var(--table-color);
    --bs-table-striped-bg: var(--table-striped-bg);
    --bs-table-hover-bg: var(--table-hover-bg);
    border-color: var(--table-border);
    color: var(--table-color);
}

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

/* --- Modals --- */
.modal-content {
    background-color: var(--modal-bg);
    color: var(--text-primary);
    border: 1px solid var(--modal-border);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

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

.modal-backdrop.show {
    opacity: 0.6;
}