:root {
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #212529;
    --sidebar-gradient: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
    --sidebar-text: rgba(255, 255, 255, 0.8);
    --sidebar-active-bg: rgba(255, 255, 255, 0.2);
    --sidebar-active-text: white;
    --border-color: #dee2e6;
    --input-bg: #ffffff;
}

body.dark-theme {
    --bg-color: #1a1a2e;
    --card-bg: #16213e;
    --text-color: #eaeaea;
    --sidebar-gradient: linear-gradient(180deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    --sidebar-text: rgba(255, 255, 255, 0.8);
    --sidebar-active-bg: rgba(255, 255, 255, 0.2);
    --sidebar-active-text: white;
    --border-color: #444;
    --input-bg: #1a1a2e;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    overflow-x: hidden;
}

/* .container-fluid {
    min-height: 100vh;
}

.row {
    min-height: 100vh;
} */

.sidebar {
    background: var(--sidebar-gradient);
    color: white;
    transition: background 0.3s ease;
    min-height: 100vh;
    position: sticky;
    top: 0;
}

.sidebar-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.sidebar-toggle {
    border-color: rgba(255, 255, 255, 0.3);
    padding: 0.35rem 0.6rem;
}

.sidebar-toggle:hover,
.sidebar-toggle:focus {
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
}

.sidebar .nav {
    padding-bottom: 1rem;
    transition: max-height 0.25s ease, opacity 0.25s ease, padding 0.25s ease;
}

.sidebar .nav-link {
    color: var(--sidebar-text);
    transition: color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    color: var(--sidebar-active-text);
    background: var(--sidebar-active-bg);
}

.main-content {
    min-height: 100vh;
    overflow-y: auto;
}

.card {
    background-color: var(--card-bg);
    transition: background-color 0.3s ease;
}

.card-header {
    background-color: var(--card-bg);
    border-bottom-color: var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.form-control,
.form-select {
    background-color: var(--input-bg);
    color: var(--text-color);
    border-color: var(--border-color);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body.dark-theme .form-control,
body.dark-theme .form-select {
    background-color: var(--input-bg) !important;
    color: var(--text-color) !important;
    border-color: var(--border-color) !important;
}

body.dark-theme .form-control::placeholder {
    color: rgba(234, 234, 234, 0.5) !important;
}

.form-label {
    color: var(--text-color);
}

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

body.dark-theme .table {
    background-color: var(--card-bg) !important;
}

body.dark-theme .table tbody tr {
    background-color: var(--card-bg) !important;
    border-bottom-color: var(--border-color) !important;
}

body.dark-theme .table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.05) !important;
}

body.dark-theme .table tbody td {
    background-color: var(--card-bg) !important;
    color: var(--text-color) !important;
}

.table thead th {
    border-bottom-color: var(--border-color);
    color: var(--text-color);
}

body.dark-theme .table thead th {
    background-color: rgba(255, 255, 255, 0.05) !important;
    color: #ffffff !important;
    font-weight: 600;
}

body.dark-theme .table td {
    border-bottom-color: var(--border-color);
}

.modal-content {
    background-color: var(--card-bg);
}

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

body.dark-theme .modal-title {
    color: var(--text-color);
}

body.dark-theme .modal-body {
    color: var(--text-color);
}

body.dark-theme .close {
    color: var(--text-color);
}

body.dark-theme .btn-close {
    filter: invert(1);
}

.text-muted {
    color: rgba(234, 234, 234, 0.6) !important;
}

body:not(.dark-theme) .text-muted {
    color: #6c757d !important;
}

body.dark-theme .card-header {
    color: var(--text-color) !important;
    background-color: var(--card-bg) !important;
}

body.dark-theme .card-header * {
    color: var(--text-color) !important;
}

body.dark-theme .card-header i {
    color: var(--text-color) !important;
}

body.dark-theme .card-body {
    color: var(--text-color);
}

body.dark-theme h1,
body.dark-theme h2,
body.dark-theme h3,
body.dark-theme h4,
body.dark-theme h5,
body.dark-theme h6 {
    color: var(--text-color);
}

body.dark-theme .form-control::placeholder {
    color: rgba(234, 234, 234, 0.5);
}

body.dark-theme .form-select option {
    background-color: var(--input-bg);
    color: var(--text-color);
}

body.dark-theme .badge {
    color: white;
}

body.dark-theme .btn-outline-primary {
    color: var(--text-color);
    border-color: var(--border-color);
}

body.dark-theme .btn-outline-primary:hover {
    background-color: rgba(102, 126, 234, 0.1);
    color: var(--text-color);
    border-color: #667eea;
}

@media (max-width: 768px) {
    .sidebar {
        min-height: auto;
    }

    .sidebar-header {
        padding-bottom: 0.75rem;
    }

    .sidebar .nav {
        max-height: 0;
        opacity: 0;
        overflow: hidden;
        padding: 0 0.75rem;
        pointer-events: none;
    }

    .sidebar .nav.is-open {
        max-height: 500px;
        opacity: 1;
        padding: 0 0.75rem 1rem;
        pointer-events: auto;
    }

    .sidebar .nav-link {
        padding: 0.7rem 0.8rem;
        border-radius: 0.5rem;
    }
}

body.dark-theme .btn-outline-secondary {
    color: var(--text-color);
    border-color: var(--border-color);
}

body.dark-theme .btn-outline-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border-color: rgba(255, 255, 255, 0.3);
}

body.dark-theme .btn-outline-danger {
    color: var(--text-color);
    border-color: var(--border-color);
}

body.dark-theme .btn-outline-danger:hover {
    background-color: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    border-color: #dc3545;
}