/* === Переменные === */
:root {
    --sidebar-width: 260px;
    --sidebar-bg: #1a1d21;
    --sidebar-hover: #2d3238;
    --sidebar-active: #0d6efd;
    --sidebar-text: #e9ecef;
    --sidebar-text-muted: #adb5bd;
    --primary-gradient: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
}

/* === Базовые стили === */
body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    margin: 0;
    padding: 0;
}

/* === Боковая панель === */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
}

.sidebar-brand i {
    font-size: 1.5rem;
    color: #0d6efd;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    color: var(--sidebar-text-muted);
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
    font-weight: 500;
}

.sidebar-link:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text);
    border-left-color: var(--sidebar-active);
}

.sidebar-link.active {
    background: rgba(13, 110, 253, 0.15);
    color: #0d6efd;
    border-left-color: #0d6efd;
}

.sidebar-link i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    margin-bottom: 0.5rem;
    color: var(--sidebar-text-muted);
    font-size: 0.875rem;
}

.user-info i {
    font-size: 1.5rem;
    color: var(--sidebar-text);
}

.sidebar-link.logout {
    color: #dc3545;
}

.sidebar-link.logout:hover {
    background: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    border-left-color: #dc3545;
}

/* === Основной контент === */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left 0.3s ease;
}

/* === Мобильная шапка === */
.mobile-header {
    display: none;
    position: sticky;
    top: 0;
    background: var(--sidebar-bg);
    color: white;
    padding: 0.75rem 1rem;
    align-items: center;
    gap: 1rem;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.mobile-header .btn-link {
    color: white;
    text-decoration: none;
    padding: 0;
}

.mobile-title {
    font-weight: 600;
    font-size: 1.1rem;
}

/* === Карточки === */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    background: white;
}

.card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
}

/* === Таблицы === */
.table th {
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #495057;
    background: #f8f9fa;
}

.table-hover tbody tr {
    transition: background-color 0.15s ease;
}

.table-hover tbody tr:hover {
    background: rgba(13, 110, 253, 0.05);
}

/* === Бейджи === */
.badge {
    font-weight: 500;
    padding: 0.5em 0.75em;
    border-radius: 6px;
}

.badge.bg-success { background-color: #198754 !important; }
.badge.bg-warning { background-color: #ffc107 !important; color: #000; }
.badge.bg-danger { background-color: #dc3545 !important; }

/* === Кнопки === */
.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--primary-gradient);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.3);
}

/* === Алерты === */
.alert {
    border-radius: 10px;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* === Всплывающее окно === */
.toast-container {
    z-index: 9999;
}

.toast {
    min-width: 300px;
    max-width: 400px;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    border-radius: 10px;
}

.toast.show {
    animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* === Адаптивность === */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-header {
        display: flex;
    }
    
    /* Затемнение фона при открытом меню */
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
    }
    
    .sidebar-overlay.show {
        display: block;
    }
}

/* === Скроллбар === */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a1a1a1;
}