:root {
    /* Light theme (default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f8f9fa;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #6c757d;
    --text-light: #f8f9fa;
    --text-dark: #212529;
    --link-color: #0d6efd;
    --link-hover-color: #0a58ca;
    --border-color: #dee2e6;
    --card-bg: #ffffff;
    --header-bg: #ffffff;
    --footer-bg: #f8f9fa;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --transition-speed: 0.3s;
}

[data-theme="dark"] {
    --bg-primary: #0a192f;
    --bg-secondary: #112240;
    --bg-tertiary: #1d3461;
    --text-primary: #e6f1ff;
    --text-secondary: #8892b0;
    --text-muted: #8892b0;
    --text-light: #e6f1ff;
    --text-dark: #e6f1ff;
    --link-color: #64ffda;
    --link-hover-color: #88ffdf;
    --border-color: #233554;
    --card-bg: #112240;
    --header-bg: #0a192f;
    --footer-bg: #112240;
    --shadow-color: rgba(0, 0, 0, 0.4);
}

/* Global transitions */
* {
    transition: background-color var(--transition-speed) ease,
                color var(--transition-speed) ease,
                border-color var(--transition-speed) ease,
                box-shadow var(--transition-speed) ease;
}

/* Base styles */
html {
    background-color: var(--bg-primary);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* Text colors */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary) !important;
}

p, span, div {
    color: var(--text-primary) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-light {
    color: var(--text-light) !important;
}

.text-dark {
    color: var(--text-dark) !important;
}

/* Links */
a {
    color: var(--link-color);
    transition: color var(--transition-speed) ease;
}

a:hover {
    color: var(--link-hover-color);
}

/* Cards and containers */
.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    box-shadow: 0 2px 4px var(--shadow-color);
}

.card-title, .card-text {
    color: var(--text-primary) !important;
}

/* Navigation */
.navbar {
    background-color: var(--header-bg);
    box-shadow: 0 2px 4px var(--shadow-color);
}

.nav-link {
    color: var(--text-primary) !important;
    transition: color var(--transition-speed) ease;
}

.nav-link:hover {
    color: var(--link-hover-color) !important;
}

/* Theme toggle button */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
    font-size: 1.2rem;
    transition: all var(--transition-speed) ease;
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background-color: var(--bg-secondary);
    transform: none;
}

.theme-toggle i {
    transition: transform var(--transition-speed) ease;
}

.theme-toggle:hover i {
    transform: rotate(15deg);
}

.animate-theme-toggle i {
    animation: spin 0.5s ease;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Force dark mode styles */
[data-theme="dark"] {
    color-scheme: dark;
}

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

[data-theme="dark"] .navbar {
    background-color: var(--header-bg) !important;
}

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

[data-theme="dark"] .dropdown-menu {
    background-color: var(--card-bg) !important;
}

[data-theme="dark"] .modal-content {
    background-color: var(--card-bg) !important;
}

[data-theme="dark"] .btn-secondary {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .text-primary {
    color: var(--link-color) !important;
}

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

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .text-light {
    color: var(--text-light) !important;
}

[data-theme="dark"] .text-dark {
    color: var(--text-dark) !important;
}

[data-theme="dark"] .border-color {
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .bg-light {
    background-color: var(--bg-secondary) !important;
}

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

[data-theme="dark"] .bg-transparent {
    background-color: transparent !important;
}

[data-theme="dark"] .navbar-light {
    background-color: var(--header-bg) !important;
}

[data-theme="dark"] .navbar-light .navbar-brand,
[data-theme="dark"] .navbar-light .navbar-nav .nav-link {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .navbar-light .navbar-toggler {
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .navbar-light .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(230, 241, 255, 0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Form elements */
input, textarea, select {
    background-color: var(--bg-secondary);
    color: var(--text-primary) !important;
    border-color: var(--border-color);
    transition: all var(--transition-speed) ease;
}

input:focus, textarea:focus, select:focus {
    border-color: var(--link-color);
    box-shadow: 0 0 0 0.2rem rgba(100, 255, 218, 0.25);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted) !important;
}

/* Tables */
table {
    color: var(--text-primary) !important;
}

th, td {
    border-color: var(--border-color);
    color: var(--text-primary) !important;
}

/* Buttons */
.btn {
    transition: all var(--transition-speed) ease;
}

.btn-light {
    background-color: var(--bg-secondary);
    color: var(--text-primary) !important;
    border-color: var(--border-color);
}

.btn-dark {
    background-color: var(--bg-primary);
    color: var(--text-light) !important;
    border-color: var(--border-color);
}

/* Dropdown menus */
.dropdown-menu {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    box-shadow: 0 4px 6px var(--shadow-color);
}

.dropdown-item {
    color: var(--text-primary) !important;
    transition: background-color var(--transition-speed) ease;
}

.dropdown-item:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary) !important;
}

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

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

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

/* Toast notifications */
.Toastify__toast {
    background-color: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 4px 6px var(--shadow-color);
}

.Toastify__toast-body {
    color: var(--text-primary);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Dark mode specific overrides */
[data-theme="dark"] {
    /* Sidebar specific styles */
    .navbar-nav .nav-link,
    .navbar-nav .nav-item .nav-link,
    .navbar-nav .dropdown-item,
    .navbar-nav .megamenu-link,
    .navbar-nav .font-small,
    .navbar-nav .list-group-item,
    .navbar-nav .list-group-flush a,
    .navbar-nav .nav-link-mobile,
    .navbar-nav .nav-link-mobile:hover,
    .navbar-nav .nav-link-mobile.active,
    .navbar-nav .nav-link-mobile:focus,
    .navbar-nav .nav-link-mobile:active,
    .navbar-nav .nav-link-mobile.show,
    .navbar-nav .nav-link-mobile[aria-expanded="true"],
    .navbar-nav .nav-link-mobile[aria-current="page"],
    .navbar-nav .nav-link-mobile[aria-selected="true"],
    .navbar-nav .nav-link-mobile[aria-pressed="true"],
    .navbar-nav .nav-link-mobile[aria-disabled="true"],
    .navbar-nav .nav-link-mobile[aria-hidden="true"],
    .navbar-nav .nav-link-mobile[aria-busy="true"],
    .navbar-nav .nav-link-mobile[aria-invalid="true"],
    .navbar-nav .nav-link-mobile[aria-required="true"],
    .navbar-nav .nav-link-mobile[aria-checked="true"],
    .navbar-nav .nav-link-mobile[aria-selected="true"],
    .navbar-nav .nav-link-mobile[aria-pressed="true"],
    .navbar-nav .nav-link-mobile[aria-expanded="true"],
    .navbar-nav .nav-link-mobile[aria-haspopup="true"],
    .navbar-nav .nav-link-mobile[aria-controls="true"],
    .navbar-nav .nav-link-mobile[aria-describedby="true"],
    .navbar-nav .nav-link-mobile[aria-label="true"],
    .navbar-nav .nav-link-mobile[aria-labelledby="true"],
    .navbar-nav .nav-link-mobile[aria-live="true"],
    .navbar-nav .nav-link-mobile[aria-relevant="true"],
    .navbar-nav .nav-link-mobile[aria-atomic="true"],
    .navbar-nav .nav-link-mobile[aria-busy="true"],
    .navbar-nav .nav-link-mobile[aria-current="true"],
    .navbar-nav .nav-link-mobile[aria-disabled="true"],
    .navbar-nav .nav-link-mobile[aria-dropeffect="true"],
    .navbar-nav .nav-link-mobile[aria-grabbed="true"],
    .navbar-nav .nav-link-mobile[aria-haspopup="true"],
    .navbar-nav .nav-link-mobile[aria-hidden="true"],
    .navbar-nav .nav-link-mobile[aria-invalid="true"],
    .navbar-nav .nav-link-mobile[aria-label="true"],
    .navbar-nav .nav-link-mobile[aria-labelledby="true"],
    .navbar-nav .nav-link-mobile[aria-live="true"],
    .navbar-nav .nav-link-mobile[aria-owns="true"],
    .navbar-nav .nav-link-mobile[aria-relevant="true"],
    .navbar-nav .nav-link-mobile[aria-selected="true"],
    .navbar-nav .nav-link-mobile[aria-sort="true"],
    .navbar-nav .nav-link-mobile[aria-valuemax="true"],
    .navbar-nav .nav-link-mobile[aria-valuemin="true"],
    .navbar-nav .nav-link-mobile[aria-valuenow="true"],
    .navbar-nav .nav-link-mobile[aria-valuetext="true"],
    .navbar-nav .nav-link-mobile[aria-atomic="true"],
    .navbar-nav .nav-link-mobile[aria-busy="true"],
    .navbar-nav .nav-link-mobile[aria-current="true"],
    .navbar-nav .nav-link-mobile[aria-disabled="true"],
    .navbar-nav .nav-link-mobile[aria-dropeffect="true"],
    .navbar-nav .nav-link-mobile[aria-grabbed="true"],
    .navbar-nav .nav-link-mobile[aria-haspopup="true"],
    .navbar-nav .nav-link-mobile[aria-hidden="true"],
    .navbar-nav .nav-link-mobile[aria-invalid="true"],
    .navbar-nav .nav-link-mobile[aria-label="true"],
    .navbar-nav .nav-link-mobile[aria-labelledby="true"],
    .navbar-nav .nav-link-mobile[aria-live="true"],
    .navbar-nav .nav-link-mobile[aria-owns="true"],
    .navbar-nav .nav-link-mobile[aria-relevant="true"],
    .navbar-nav .nav-link-mobile[aria-selected="true"],
    .navbar-nav .nav-link-mobile[aria-sort="true"],
    .navbar-nav .nav-link-mobile[aria-valuemax="true"],
    .navbar-nav .nav-link-mobile[aria-valuemin="true"],
    .navbar-nav .nav-link-mobile[aria-valuenow="true"],
    .navbar-nav .nav-link-mobile[aria-valuetext="true"] {
        color: var(--text-primary) !important;
    }

    /* Dropdown menu text */
    .dropdown-menu,
    .dropdown-menu-lg,
    .dropdown-megamenu-sm {
        background-color: var(--card-bg) !important;
        border-color: var(--border-color) !important;
    }

    .dropdown-menu .dropdown-item,
    .dropdown-menu-lg .dropdown-item,
    .dropdown-megamenu-sm .dropdown-item,
    .dropdown-menu .megamenu-link,
    .dropdown-menu-lg .megamenu-link,
    .dropdown-megamenu-sm .megamenu-link,
    .dropdown-menu .font-small,
    .dropdown-menu-lg .font-small,
    .dropdown-megamenu-sm .font-small,
    .dropdown-menu .list-group-item,
    .dropdown-menu-lg .list-group-item,
    .dropdown-megamenu-sm .list-group-item,
    .dropdown-menu .list-group-flush a,
    .dropdown-menu-lg .list-group-flush a,
    .dropdown-megamenu-sm .list-group-flush a {
        color: var(--text-primary) !important;
    }

    /* Hover states */
    .dropdown-menu .dropdown-item:hover,
    .dropdown-menu-lg .dropdown-item:hover,
    .dropdown-megamenu-sm .dropdown-item:hover,
    .dropdown-menu .megamenu-link:hover,
    .dropdown-menu-lg .megamenu-link:hover,
    .dropdown-megamenu-sm .megamenu-link:hover,
    .dropdown-menu .font-small:hover,
    .dropdown-menu-lg .font-small:hover,
    .dropdown-megamenu-sm .font-small:hover,
    .dropdown-menu .list-group-item:hover,
    .dropdown-menu-lg .list-group-item:hover,
    .dropdown-megamenu-sm .list-group-item:hover,
    .dropdown-menu .list-group-flush a:hover,
    .dropdown-menu-lg .list-group-flush a:hover,
    .dropdown-megamenu-sm .list-group-flush a:hover {
        background-color: var(--bg-secondary) !important;
        color: var(--link-color) !important;
    }

    /* Active states */
    .dropdown-menu .dropdown-item.active,
    .dropdown-menu-lg .dropdown-item.active,
    .dropdown-megamenu-sm .dropdown-item.active,
    .dropdown-menu .megamenu-link.active,
    .dropdown-menu-lg .megamenu-link.active,
    .dropdown-megamenu-sm .megamenu-link.active,
    .dropdown-menu .font-small.active,
    .dropdown-menu-lg .font-small.active,
    .dropdown-megamenu-sm .font-small.active,
    .dropdown-menu .list-group-item.active,
    .dropdown-menu-lg .list-group-item.active,
    .dropdown-megamenu-sm .list-group-item.active,
    .dropdown-menu .list-group-flush a.active,
    .dropdown-menu-lg .list-group-flush a.active,
    .dropdown-megamenu-sm .list-group-flush a.active {
        background-color: var(--bg-secondary) !important;
        color: var(--link-color) !important;
    }

    /* Section headers */
    .text-primary,
    .d-block.mb-3.text-primary {
        color: var(--link-color) !important;
    }

    /* Icons */
    .fas,
    .far,
    .fab {
        color: var(--text-primary) !important;
    }

    /* Mobile menu */
    .show-mobile-only .nav-link,
    .show-mobile-only .nav-item .nav-link,
    .show-mobile-only .dropdown-item,
    .show-mobile-only .font-small,
    .show-mobile-only .list-group-item,
    .show-mobile-only .list-group-flush a {
        color: var(--text-primary) !important;
    }

    /* Desktop menu */
    .show-not-mobile .nav-link,
    .show-not-mobile .nav-item .nav-link,
    .show-not-mobile .dropdown-item,
    .show-not-mobile .font-small,
    .show-not-mobile .list-group-item,
    .show-not-mobile .list-group-flush a {
        color: var(--text-primary) !important;
    }
}