/* static/css/main.css */
:root {
    --primary-dark: #0f172a;
    --primary: #3b82f6;
    --primary-light: #60a5fa;
    --secondary: #8b5cf6;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #94a3b8;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --radius: 0.75rem;
    --radius-lg: 1rem;
}

/* Глобальные анимации */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: radial-gradient(circle at 10% 20%, rgba(15, 23, 42, 0.05) 0%, rgba(59, 130, 246, 0.02) 100%), 
                linear-gradient(135deg, #f5f7fa 0%, #eef2f6 100%);
    background-attachment: fixed;
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
    color: var(--dark);
    line-height: 1.5;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.2s;
}

/* Навигация с glassmorphism */
.navbar {
    background: rgba(15, 23, 42, 0.85) !important;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-lg);
    padding: 0.8rem 0;
    transition: all 0.3s;
}

.navbar.scrolled {
    padding: 0.5rem 0;
    background: rgba(15, 23, 42, 0.95) !important;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff, #a5b4fc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
    transition: transform 0.2s;
}

.navbar-brand:hover {
    transform: scale(1.02);
}

.nav-link {
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
    margin: 0 0.2rem;
}

.nav-link:hover {
    transform: translateY(-2px);
    color: var(--primary-light) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    transition: all 0.3s;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Карточки с glassmorphism и анимацией */
.card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
    animation: fadeInUp 0.5s ease backwards;
}

.card:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-xl);
    border-color: rgba(59, 130, 246, 0.5);
}

.card-header {
    background: rgba(255, 255, 255, 0.6);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
}

/* Статистические карточки */
.stat-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,255,255,0.85));
    backdrop-filter: blur(4px);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary);
    animation: slideInRight 0.4s ease backwards;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.stat-card:hover::before {
    left: 100%;
}

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

/* Кнопки */
.btn {
    border-radius: 2rem;
    padding: 0.5rem 1.5rem;
    font-weight: 500;
    transition: all 0.25s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.btn:active::after {
    width: 100%;
    height: 100%;
}

.btn-primary {
    background: linear-gradient(100deg, var(--primary), var(--primary-light));
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: linear-gradient(100deg, var(--primary-light), var(--primary));
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-success {
    background: linear-gradient(100deg, var(--success), #34d399);
}

.btn-danger {
    background: linear-gradient(100deg, var(--danger), #f87171);
}

.btn-warning {
    background: linear-gradient(100deg, var(--warning), #fbbf24);
    color: var(--dark);
}

/* Таблицы */
.table {
    background: rgba(255,255,255,0.8);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table thead th {
    background: linear-gradient(90deg, var(--dark), #1e293b);
    color: white;
    font-weight: 600;
    border-bottom: none;
    padding: 0.75rem;
}

.table tbody tr {
    transition: background-color 0.2s, transform 0.1s;
}

.table tbody tr:hover {
    background-color: rgba(59, 130, 246, 0.1);
    transform: scale(1.01);
}

/* Формы */
.form-control, .form-select {
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    padding: 0.6rem 1rem;
    transition: all 0.2s;
    background: white;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    outline: none;
    transform: scale(1.01);
}

/* Уведомления */
.alert {
    border-radius: var(--radius);
    border: none;
    box-shadow: var(--shadow);
    animation: slideDown 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Пагинация */
.pagination {
    gap: 0.3rem;
    animation: fadeInUp 0.5s ease;
}

.page-link {
    border-radius: 2rem !important;
    margin: 0 2px;
    color: var(--primary);
    border: none;
    background: rgba(255,255,255,0.8);
    padding: 0.5rem 1rem;
    transition: all 0.2s;
}

.page-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* Адаптивность */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
    .card-title {
        font-size: 1.2rem;
    }
    .btn {
        padding: 0.4rem 1rem;
        font-size: 0.9rem;
    }
    .table {
        font-size: 0.85rem;
    }
}

/* Кастомный скролл */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--gray);
    border-radius: 4px;
    transition: background 0.2s;
}

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

/* Класс для анимации при скролле */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Skeleton loading (опционально) */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* ========== Тёмная тема (активируется через класс body.dark-theme) ========== */
body.dark-theme {
    background: radial-gradient(circle at 10% 20%, #1e293b, #0f172a);
    color: #e2e8f0;
}

body.dark-theme .card,
body.dark-theme .stat-card,
body.dark-theme .table,
body.dark-theme .form-control,
body.dark-theme .form-select {
    background: rgba(30, 41, 59, 0.9);
    backdrop-filter: blur(8px);
    color: #e2e8f0;
    border-color: #334155;
}

body.dark-theme .card-header,
body.dark-theme .list-group-item {
    background: rgba(30, 41, 59, 0.7);
    color: #e2e8f0;
}

body.dark-theme .text-muted {
    color: #94a3b8 !important;
}

body.dark-theme .alert-info {
    background: #1e293b;
    color: #b9e6fe;
}

body.dark-theme .bg-white {
    background: rgba(30, 41, 59, 0.9) !important;
}

body.dark-theme .btn-outline-primary {
    color: #60a5fa;
    border-color: #60a5fa;
}

body.dark-theme .btn-outline-primary:hover {
    background: #3b82f6;
    color: white;
}

body.dark-theme .table thead th {
    background: linear-gradient(90deg, #0f172a, #1e293b);
}

body.dark-theme .page-link {
    background: rgba(30, 41, 59, 0.8);
    color: #60a5fa;
}

body.dark-theme .page-link:hover {
    background: #3b82f6;
    color: white;
}

body.dark-theme .stat-card {
    background: linear-gradient(135deg, rgba(30,41,59,0.95), rgba(30,41,59,0.85));
    border-left-color: #60a5fa;
}

body.dark-theme .form-control:focus,
body.dark-theme .form-select:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

body.dark-theme .navbar {
    background: rgba(0, 0, 0, 0.85) !important;
}

/* Дополнительная анимация для иконки на дашборде */
.hero-icon {
    animation: pulse 2s infinite;
}