.modern-navbar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    z-index: 1000;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Скрытый чекбокс для переключения */
.nav-toggle-checkbox {
    display: none;
}

.navbar-wrapper {
    height: 100%;
    transition: all 0.3s ease;
}

.nav-container {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100%;
    width: 250px;
    padding: 20px 0;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

/* Кнопка переключения */
.nav-toggle-btn {
    position: absolute;
    top: 20px;
    right: -50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    z-index: 1001;
}

.nav-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.nav-toggle-btn i {
    font-size: 18px;
    transition: transform 0.3s ease;
}

/* Контент навигации */
.nav-content {
    padding: 0 20px;
}

.nav-title {
    color: white;
    text-align: center;
    margin-bottom: 30px;
    font-weight: 600;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-menu {
    gap: 5px;
}

.nav-link-custom {
    color: rgba(255, 255, 255, 0.8) !important;
    border-radius: 10px !important;
    padding: 12px 15px !important;
    margin: 3px 0 !important;
    transition: all 0.3s ease !important;
    border: none !important;
    display: flex !important;
    align-items: center;
    text-decoration: none;
}

.nav-link-custom:hover {
    color: white !important;
    background: rgba(255, 255, 255, 0.15) !important;
    transform: translateX(5px);
}

.nav-link-custom.active {
    background: rgba(255, 255, 255, 0.2) !important;
    color: white !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border-left: 4px solid white !important;
}

.nav-icon {
    width: 20px;
    margin-right: 12px;
    font-size: 16px;
    transition: transform 0.3s ease;
}

.nav-link-custom:hover .nav-icon {
    transform: scale(1.2);
}

.nav-text {
    font-weight: 500;
    transition: all 0.3s ease;
}

/* СВЕРНУТОЕ СОСТОЯНИЕ - ОБНОВЛЕННЫЕ СЕЛЕКТОРЫ */
.nav-toggle-checkbox:checked + .navbar-wrapper .nav-container {
    width: 70px;
}

.nav-toggle-checkbox:checked + .navbar-wrapper .nav-title {
    opacity: 0;
    visibility: hidden;
}

.nav-toggle-checkbox:checked + .navbar-wrapper .nav-text {
    opacity: 0;
    visibility: hidden;
    width: 0;
}

.nav-toggle-checkbox:checked + .navbar-wrapper .nav-link-custom {
    padding: 12px !important;
    justify-content: center;
}

.nav-toggle-checkbox:checked + .navbar-wrapper .nav-icon {
    margin-right: 0;
    transform: scale(1.1);
}

.nav-toggle-checkbox:checked + .navbar-wrapper .nav-toggle-btn i {
    transform: rotate(180deg);
}

.nav-toggle-checkbox:checked + .navbar-wrapper .nav-link-custom:hover {
    transform: scale(1.05);
}

/* Основной контент */
.man-layout {
    margin-left: 250px;
    transition: margin-left 0.3s ease;
    min-height: 100vh;
    padding: 20px;
    background-color: #f8f9fa;
}

.man-layout.collapsed {
    margin-left: 70px;
}

/* Когда навигация свернута */
.nav-toggle-checkbox:checked + .navbar-wrapper ~ .man-layout {
    margin-left: 70px;
}

/* Адаптивность */
@media (max-width: 768px) {
    .modern-navbar {
        transform: translateX(-100%);
    }

    .nav-toggle-checkbox:checked + .navbar-wrapper {
        transform: translateX(100%);
    }

    .man-layout {
        margin-left: 0;
    }

    .nav-toggle-checkbox:checked + .navbar-wrapper ~ .man-layout {
        margin-left: 0;
    }

    .nav-toggle-btn {
        right: -60px;
    }
}

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

.nav-link-custom {
    animation: fadeIn 0.3s ease forwards;
}