/* ==================== ПЕРЕМЕННЫЕ СВЕТЛОЙ ТЕМЫ (по умолчанию) ==================== */
:root {
    /* Основные цвета */
    --primary: #2c3e50;
    --primary-dark: #1a2632;
    --primary-light: #34495e;
    --accent: #3498db;
    --accent-dark: #2980b9;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;
    
    /* Нейтральные цвета */
    --gray-100: #f8f9fa;
    --gray-200: #ecf0f1;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #bdc3c7;
    --gray-600: #7f8c8d;
    --gray-700: #95a5a6;
    --gray-800: #2c3e50;
    --gray-900: #1a2632;
    
    /* Фоны */
    --body-bg: #f4f6f9;
    --card-bg: #ffffff;
    --sidebar-bg: #1e2a36;
    --sidebar-text: #ecf0f1;
    --sidebar-text-muted: #95a5a6;
    --border-color: #e9ecef;
    --border-dark: #dee2e6;
    
    /* Тени */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Скругления */
    --radius-sm: 4px;
    --radius: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* ==================== ГЛОБАЛЬНЫЕ СТИЛИ ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--body-bg);
    color: var(--gray-800);
    line-height: 1.5;
    font-size: 14px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Анимация для плавного переключения темы */
.theme-transition {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease !important;
}

.theme-transition * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease !important;
}

/* ==================== САЙДБАР ==================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    background: var(--sidebar-bg);
    transition: all 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 24px;
}

.sidebar-header .logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header .logo-icon {
    width: 32px;
    height: 32px;
    background: var(--accent);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-header .logo-icon i {
    font-size: 18px;
    color: white;
}

.sidebar-header .logo-text h3 {
    font-size: 16px;
    font-weight: 600;
    color: white;
    margin: 0;
    letter-spacing: -0.2px;
}

.sidebar-header .logo-text p {
    font-size: 11px;
    color: var(--sidebar-text-muted);
    margin: 4px 0 0 0;
}

.sidebar-nav {
    padding: 0 16px;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--sidebar-text-muted);
    margin-bottom: 12px;
    padding-left: 12px;
}

.nav-item {
    margin-bottom: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--sidebar-text-muted);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    font-size: 13px;
    font-weight: 500;
}

.nav-link i {
    width: 20px;
    font-size: 16px;
    text-align: center;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

.nav-link.active {
    background: rgba(52, 152, 219, 0.15);
    color: var(--accent);
    border-left: 2px solid var(--accent);
}

.nav-link.active i {
    color: var(--accent);
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 11px;
    color: var(--sidebar-text-muted);
    text-align: center;
}

/* ==================== ОСНОВНОЙ КОНТЕНТ ==================== */
.main-content {
    margin-left: 260px;
    min-height: 100vh;
}

.top-bar {
    background: var(--card-bg);
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 99;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.98);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.page-title {
    font-size: 20px;
    font-weight: 600;
    margin: 0;
    color: var(--gray-800);
    letter-spacing: -0.3px;
}

.page-title i {
    font-size: 20px;
    color: var(--accent);
    margin-right: 8px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info {
    text-align: right;
    margin-right: 12px;
}

.user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-800);
}

.user-role {
    font-size: 11px;
    color: var(--gray-600);
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: var(--gray-200);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.user-avatar:hover {
    background: var(--gray-300);
}

.user-avatar i {
    font-size: 18px;
    color: var(--gray-600);
}

.dropdown-menu {
    position: absolute;
    top: 60px;
    right: 32px;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    display: none;
    z-index: 1000;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.dropdown-menu.show {
    display: block;
    animation: fadeIn 0.2s ease;
}

.dropdown-item {
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-700);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background: var(--gray-100);
    color: var(--accent);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 8px 0;
}

.content-wrapper {
    padding: 32px;
}

/* ==================== КАРТОЧКИ ==================== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all 0.2s ease;
    margin-bottom: 24px;
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 16px 20px;
    font-weight: 600;
    font-size: 14px;
}

.card-header h5 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-800);
}

.card-body {
    padding: 20px;
}

/* ==================== СТАТИСТИЧЕСКИЕ КАРТОЧКИ ==================== */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
}

.stat-icon i {
    font-size: 20px;
    color: var(--accent);
}

.stat-value {
    font-size: 28px;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 4px;
    letter-spacing: -0.5px;
}

.stat-label {
    font-size: 12px;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.stat-footer {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--gray-600);
}

/* ==================== ТАБЛИЦЫ ==================== */
.table-wrapper {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    text-align: left;
    padding: 12px 16px;
    background: var(--gray-100);
    font-weight: 600;
    font-size: 12px;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

.table tr:hover td {
    background: var(--gray-100);
}

/* ==================== БЭДЖИ ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.2px;
}

.badge-success {
    background: rgba(39, 174, 96, 0.1);
    color: var(--success);
}

.badge-danger {
    background: rgba(231, 76, 60, 0.1);
    color: var(--danger);
}

.badge-warning {
    background: rgba(243, 156, 18, 0.1);
    color: var(--warning);
}

.badge-info {
    background: rgba(52, 152, 219, 0.1);
    color: var(--info);
}

/* ==================== КНОПКИ ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
}

.btn-outline {
    background: transparent;
    border-color: var(--border-dark);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-100);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* ==================== АНИМАЦИИ ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* ==================== АДАПТИВНОСТЬ ==================== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-wrapper {
        padding: 20px;
    }
    
    .stat-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .top-bar {
        padding: 12px 20px;
    }
    
    .page-title {
        font-size: 18px;
    }
}

/* ==================== СКРОЛЛБАР ==================== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--gray-200);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-500);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-600);
}

/* ==================== ТЕМНАЯ ТЕМА (динамическая) ==================== */
body.dark-theme {
    --primary: #3b4b5e;
    --primary-dark: #2c3e50;
    --primary-light: #4a5b6e;
    --accent: #5d9b9b;
    --accent-dark: #4a7c7c;
    --success: #2e7d64;
    --danger: #b34e4e;
    --warning: #c97e2c;
    --info: #5d9b9b;
    
    --gray-100: #2d2f36;
    --gray-200: #3a3c44;
    --gray-300: #484a54;
    --gray-400: #5a5c68;
    --gray-500: #6e707e;
    --gray-600: #898b9a;
    --gray-700: #a6a8b5;
    --gray-800: #c2c4ce;
    --gray-900: #e2e4ec;
    
    --body-bg: #1a1c23;
    --card-bg: #25262f;
    --sidebar-bg: #1e1f28;
    --sidebar-text: #e2e4ec;
    --sidebar-text-muted: #898b9a;
    --border-color: #2d2f36;
    --border-dark: #3a3c44;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

body.dark-theme .top-bar {
    background: rgba(37, 38, 47, 0.98);
}

body.dark-theme .form-control {
    background: var(--gray-100);
    border-color: var(--border-dark);
    color: var(--gray-800);
}

body.dark-theme .form-control:focus {
    background: var(--gray-100);
}

body.dark-theme .btn-outline {
    border-color: var(--border-dark);
    color: var(--gray-600);
}

body.dark-theme .btn-outline:hover {
    background: var(--gray-200);
}