/* Общие стили для всех страниц */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background: linear-gradient(135deg, #E53935 0%, #FF5252 100%);
    min-height: 100vh;
    margin: 0;
    overflow-x: hidden;
}

.layout {
    display: flex;
    min-height: 100vh;
}

/* Боковое меню */
.sidebar {
    width: 280px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.9) 100%);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: transform 0.3s ease;
    overflow-y: auto;
}

.sidebar-header {
    padding: 30px 25px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    text-align: center;
}

.sidebar-header h1 {
    background: linear-gradient(135deg, #E53935, #FF5252);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.8em;
    font-weight: 700;
    margin-bottom: 10px;
}

.sidebar-header p {
    color: #7f8c8d;
    font-size: 0.9em;
    font-weight: 500;
}

.sidebar-nav {
    padding: 20px 0;
}

.nav-item {
    margin: 5px 15px;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    color: #2c3e50;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(229, 57, 53, 0.1), transparent);
    transition: left 0.5s ease;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover {
    background: linear-gradient(135deg, rgba(229, 57, 53, 0.1), rgba(244, 67, 54, 0.1));
    transform: translateX(5px);
    color: #E53935;
}

.nav-link.active {
    background: linear-gradient(135deg, #E53935, #FF5252);
    color: white;
    box-shadow: 0 4px 15px rgba(229, 57, 53, 0.3);
}

.nav-link i {
    margin-right: 12px;
    width: 20px;
    font-size: 1.1em;
}

.lang-switcher {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.lang-btn {
    background: linear-gradient(135deg, #E53935, #FF5252);
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(229, 57, 53, 0.3);
}

.lang-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(229, 57, 53, 0.4);
}

/* Основной контент */
.main-content {
    flex: 1;
    margin-left: 280px;
    min-height: 100vh;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
}

.content-wrapper {
    padding: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Мобильная адаптация */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: linear-gradient(135deg, #E53935, #FF5252);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(229, 57, 53, 0.3);
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
}

.modal-content {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.9) 100%);
    backdrop-filter: blur(20px);
    margin: 10% auto;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 90%;
    max-width: 450px;
    text-align: center;
    animation: modalSlideIn 0.4s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-icon {
    font-size: 4em;
    margin-bottom: 20px;
    animation: bounceIn 0.6s ease-out;
}

@keyframes bounceIn {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-20px); }
    60% { transform: translateY(-10px); }
}

.modal-success .modal-icon {
    color: #28a745;
}

.modal-error .modal-icon {
    color: #dc3545;
}

.modal h3 {
    color: #2c3e50;
    font-size: 1.8em;
    margin-bottom: 15px;
    font-weight: 600;
}

.modal-close {
    background: linear-gradient(135deg, #E53935, #FF5252);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.modal-close:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(229, 57, 53, 0.3);
}

/* Карточки контента */
.content-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.9) 100%);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.content-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.card-header {
    margin-bottom: 30px;
    text-align: center;
}

.card-title {
    background: linear-gradient(135deg, #E53935, #FF5252);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2.5em;
    font-weight: 700;
    margin-bottom: 10px;
}

.card-subtitle {
    color: #7f8c8d;
    font-size: 1.1em;
    font-weight: 500;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .content-wrapper {
        padding: 20px;
    }
}