/* ============================================
   🎨 ИТ СФЕРА — ФИРМЕННЫЙ СТИЛЬ CRM/LMS
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* Основные цвета бренда */
    --bg: #F8F7FF;
    --primary: #9B4DFF;
    --primary-light: rgba(155, 77, 255, 0.15);
    --primary-dark: #7B2FDF;
    --cyan: #4BE6D9;
    --cyan-light: rgba(75, 230, 217, 0.15);
    --lilac: #E8E4F3;
    
    /* Семантические цвета */
    --success: #22C55E;
    --success-light: rgba(34, 197, 94, 0.15);
    --warning: #F59E0B;
    --warning-light: rgba(245, 158, 11, 0.15);
    --danger: #EF4444;
    --danger-light: rgba(239, 68, 68, 0.15);
    --info: #3B82F6;
    --info-light: rgba(59, 130, 246, 0.15);
    
    /* Нейтральные */
    --light: #F8F7FF;
    --dark: #1F2937;
    --gray-700: #374151;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-300: #D1D5DB;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --white: #FFFFFF;
    
    /* Карточки */
    --soft-card: rgba(255, 255, 255, 0.95);
    --card-border: var(--lilac);
    
    /* Тени */
    --shadow-sm: 0 2px 8px rgba(155, 77, 255, 0.08);
    --shadow-md: 0 4px 16px rgba(155, 77, 255, 0.12);
    --shadow-lg: 0 8px 32px rgba(155, 77, 255, 0.16);
    --shadow-glow: 0 0 20px rgba(155, 77, 255, 0.25);
    --box-shadow: var(--shadow-md);
    
    /* Радиусы */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 999px;
    --border-radius: var(--radius-md);
    
    /* Переходы */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition: all 0.25s ease;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    background: var(--bg);
    min-height: 100vh;
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--dark);
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   НАВИГАЦИЯ
   ============================================ */

.navbar {
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--lilac);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
}

.navbar-brand {
    font-size: 1.375rem;
    font-weight: 800;
    color: white !important;
    letter-spacing: -0.5px;
}

.navbar-brand i {
    font-size: 1.5rem;
}

/* ============================================
   БОКОВОЕ МЕНЮ
   ============================================ */

.list-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.list-group-item {
    border: 1.5px solid transparent;
    border-radius: var(--radius-md);
    color: var(--gray-700);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.875rem 1rem;
    transition: all var(--transition-normal);
    background: var(--white);
    cursor: pointer;
}

.list-group-item:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateX(4px);
}

.list-group-item.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-md);
}

/* ============================================
   КАРТОЧКИ
   ============================================ */

.card {
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    overflow: hidden;
    background: var(--soft-card);
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.card-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    padding: 1rem 1.25rem;
}

.card-body {
    padding: 1.25rem;
}

.card-title {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

/* ============================================
   КАРТОЧКИ СТАТИСТИКИ
   ============================================ */

.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 4px solid var(--primary);
    position: relative;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-light), transparent);
    border-radius: 0 var(--radius-lg) 0 100%;
    opacity: 0.5;
}

.stat-card:nth-child(2) { border-left-color: var(--cyan); }
.stat-card:nth-child(3) { border-left-color: var(--warning); }
.stat-card:nth-child(4) { border-left-color: var(--success); }
.stat-card:nth-child(5) { border-left-color: var(--danger); }
.stat-card:nth-child(6) { border-left-color: var(--info); }
.stat-card:nth-child(7) { border-left-color: #ec4899; }
.stat-card:nth-child(8) { border-left-color: #8b5cf6; }

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    color: var(--gray-500);
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-icon {
    font-size: 2rem;
    opacity: 0.15;
    position: absolute;
    right: 1rem;
    top: 1rem;
}

/* ============================================
   ТАБЛИЦЫ
   ============================================ */

.table {
    border-collapse: separate;
    border-spacing: 0 6px;
    margin-bottom: 0;
    width: 100%;
}

.table thead th {
    background-color: var(--bg);
    color: var(--gray-600);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.75px;
    border: none;
    padding: 0.875rem 1rem;
    white-space: nowrap;
}

.table tbody tr {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.table tbody tr:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.table tbody td {
    border: none;
    padding: 0.875rem 1rem;
    vertical-align: middle;
    font-size: 0.9rem;
}

.table tbody tr td:first-child {
    border-top-left-radius: var(--border-radius);
    border-bottom-left-radius: var(--border-radius);
}

.table tbody tr td:last-child {
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

.table-sm tbody td {
    padding: 0.625rem 0.75rem;
    font-size: 0.85rem;
}

.table-sm thead th {
    padding: 0.625rem 0.75rem;
    font-size: 0.7rem;
}

/* ============================================
   БЕЙДЖИ
   ============================================ */

.badge {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.25px;
}

.badge-success, .bg-success {
    background: var(--success) !important;
    color: white;
}

.badge-warning, .bg-warning {
    background: var(--warning) !important;
    color: white;
}

.badge-danger, .bg-danger {
    background: var(--danger) !important;
    color: white;
}

.badge-info, .bg-info {
    background: var(--info) !important;
    color: white;
}

.badge-light, .bg-light {
    background: var(--gray-100) !important;
    color: var(--gray-700);
}

.badge-primary, .bg-primary {
    background: var(--primary) !important;
    color: white;
}

.badge-secondary, .bg-secondary {
    background: var(--gray-500) !important;
    color: white;
}

/* ============================================
   КНОПКИ
   ============================================ */

.btn {
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.625rem 1.25rem;
    transition: all var(--transition-fast);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(155, 77, 255, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: white;
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-300);
    color: var(--dark);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #16A34A;
    color: white;
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #DC2626;
    color: white;
    transform: translateY(-2px);
}

.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-warning:hover {
    background: #D97706;
    color: white;
}

.btn-sm {
    padding: 0.4rem 0.875rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
}

.btn-outline-primary {
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: white;
}

.btn-outline-secondary {
    background: transparent;
    border: 1.5px solid var(--gray-300);
    color: var(--gray-600);
}

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

.btn-outline-danger {
    background: transparent;
    border: 1.5px solid var(--danger);
    color: var(--danger);
}

.btn-outline-danger:hover {
    background: var(--danger);
    color: white;
}

.btn-outline-success {
    background: transparent;
    border: 1.5px solid var(--success);
    color: var(--success);
}

.btn-outline-success:hover {
    background: var(--success);
    color: white;
}

.btn-outline-warning {
    background: transparent;
    border: 1.5px solid var(--warning);
    color: var(--warning);
}

.btn-outline-warning:hover {
    background: var(--warning);
    color: white;
}

.btn-outline-light {
    border: 1.5px solid rgba(255,255,255,0.5);
    color: white;
    background: transparent;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary);
    padding: 0;
}

.btn-link:hover {
    color: var(--primary-dark);
}

/* ============================================
   ФОРМЫ
   ============================================ */

.form-control,
.form-select {
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
    background: var(--white);
    color: var(--dark);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(155, 77, 255, 0.1);
    outline: none;
    background: var(--white);
}

.form-control::placeholder {
    color: var(--gray-400);
}

.form-label {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-text {
    color: var(--gray-500);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(155, 77, 255, 0.1);
    border-color: var(--primary);
}

.input-group-text {
    background: var(--gray-100);
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-md);
    color: var(--gray-600);
}

/* ============================================
   МОДАЛЬНЫЕ ОКНА
   ============================================ */

.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.modal-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
    color: white;
    border: none;
    padding: 1.25rem 1.5rem;
}

.modal-title {
    font-weight: 700;
    font-size: 1.1rem;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.modal-header .btn-close:hover {
    opacity: 1;
}

.modal-body {
    padding: 1.5rem;
    background: var(--white);
}

.modal-footer {
    border: none;
    padding: 1rem 1.5rem;
    background: var(--gray-50);
    gap: 0.75rem;
}

.modal-backdrop.show {
    opacity: 0.5;
}

/* ============================================
   АЛЕРТЫ
   ============================================ */

.alert {
    border: none;
    border-radius: var(--radius-md);
    border-left: 4px solid;
    padding: 1rem 1.25rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-success {
    border-left-color: var(--success);
    background: rgba(34, 197, 94, 0.1);
    color: #166534;
}

.alert-warning {
    border-left-color: var(--warning);
    background: rgba(245, 158, 11, 0.1);
    color: #92400e;
}

.alert-danger {
    border-left-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    color: #991b1b;
}

.alert-info {
    border-left-color: var(--primary);
    background: rgba(155, 77, 255, 0.08);
    color: var(--primary-dark);
}

.alert-primary {
    border-left-color: var(--primary);
    background: rgba(155, 77, 255, 0.08);
    color: var(--primary-dark);
}

/* ============================================
   ЗАГРУЗКА И АНИМАЦИИ
   ============================================ */

.loading {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.fade-in {
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: .5;
    }
}

.slide-up {
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   АДАПТИВНЫЙ ДИЗАЙН
   ============================================ */

@media (max-width: 992px) {
    .col-lg-2, .col-lg-10 {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .navbar {
        padding: 0.75rem 1rem;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .list-group-item {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }

    .table {
        font-size: 0.8rem;
    }

    .table tbody td {
        padding: 0.625rem 0.75rem;
    }

    .container-fluid {
        margin-top: 1rem !important;
        padding-left: 0.75rem !important;
        padding-right: 0.75rem !important;
    }

    .col-lg-2 {
        margin-bottom: 1.5rem;
    }
    
    .card-header {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .modal-body {
        padding: 1rem;
    }
}

@media (max-width: 576px) {
    .stat-card {
        padding: 1rem;
    }
    
    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .badge {
        padding: 0.25rem 0.5rem;
        font-size: 0.7rem;
    }
}

/* ============================================
   УТИЛИТЫ
   ============================================ */

.bg-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%) !important;
}

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

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

.text-muted {
    color: var(--gray-500) !important;
}

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

.shadow-elevated {
    box-shadow: var(--shadow-lg);
}

.rounded-lg {
    border-radius: var(--radius-lg) !important;
}

.rounded-md {
    border-radius: var(--radius-md) !important;
}

.rounded-sm {
    border-radius: var(--radius-sm) !important;
}

.gap-4 {
    gap: 1.5rem;
}

.gap-3 {
    gap: 1rem;
}

.gap-2 {
    gap: 0.5rem;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hover-lift {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   СКРОЛЛБАР
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ============================================
   ПЕЧАТЬ
   ============================================ */

@media print {
    .navbar,
    .list-group,
    .btn,
    .no-print {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--gray-200);
    }
    
    body {
        background: white;
    }
}

/* ============================================
   ДОПОЛНИТЕЛЬНЫЕ КОМПОНЕНТЫ
   ============================================ */

/* Тултипы */
.tooltip-inner {
    background: var(--dark);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
}

/* Dropdown */
.dropdown-menu {
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
}

.dropdown-item {
    border-radius: var(--radius-sm);
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.dropdown-item.active,
.dropdown-item:active {
    background: var(--primary);
    color: white;
}

/* Прогресс бар */
.progress {
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary) 0%, var(--cyan) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

/* Пагинация */
.pagination {
    gap: 0.25rem;
}

.page-link {
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.875rem;
    color: var(--gray-600);
    background: var(--white);
    transition: all var(--transition-fast);
}

.page-link:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.page-item.active .page-link {
    background: var(--primary);
    color: white;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--gray-500);
}

.empty-state i {
    font-size: 3rem;
    color: var(--gray-300);
    margin-bottom: 1rem;
}

.empty-state h5 {
    color: var(--gray-600);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.empty-state p {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}