:root {
    --primary: #00BFFF;
    --secondary: #8B00FF;
    --accent: #00FF7F;
    --dark-bg: #0a0a1a;
    --dark-surface: #12122a;
    --dark-panel: #1a1a2e;
    --text-primary: #ffffff;
    --text-secondary: #a0a0c0;
    --success: #00C853;
    --warning: #FFD600;
    --danger: #FF4500;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

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

/* Боковое меню */
.sidebar {
    width: 250px;
    background: var(--dark-panel);
    border-right: 1px solid rgba(139, 0, 255, 0.3);
    padding: 1.5rem 0;
    overflow-y: auto;
}

.logo {
    padding: 0 1.5rem 1.5rem;
    border-bottom: 1px solid rgba(139, 0, 255, 0.3);
    margin-bottom: 1.5rem;
}

.logo h2 {
    font-size: 1.5rem;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo span {
    font-weight: 300;
}

.nav-menu ul {
    list-style: none;
}

.nav-menu li {
    margin-bottom: 0.5rem;
}

.nav-menu a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
    background: rgba(0, 191, 255, 0.1);
    border-left: 3px solid var(--primary);
}

/* Основной контент */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.admin-header {
    background: var(--dark-panel);
    padding: 1rem 2rem;
    border-bottom: 1px solid rgba(139, 0, 255, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Секции */
section {
    display: none;
    padding: 2rem;
    overflow-y: auto;
    flex: 1;
}

section.active {
    display: block;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 1.8rem;
}

/* Статистика */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--dark-surface);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid rgba(139, 0, 255, 0.3);
}

.stat-card h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Списки */
.products-list,
.categories-list,
.ads-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--dark-surface);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid rgba(139, 0, 255, 0.3);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 191, 255, 0.2);
}

.card-header {
    padding: 1rem;
    border-bottom: 1px solid rgba(139, 0, 255, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.2rem;
}

.card-body {
    padding: 1rem;
}

.card-footer {
    padding: 1rem;
    border-top: 1px solid rgba(139, 0, 255, 0.3);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.8rem;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

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

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Поддержка */
.tickets-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    height: calc(100vh - 200px);
}

.ticket-list {
    overflow-y: auto;
}

.ticket-item {
    background: var(--dark-surface);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.ticket-item:hover,
.ticket-item.active {
    border-color: var(--primary);
    background: rgba(0, 191, 255, 0.1);
}

.ticket-item h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.ticket-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.ticket-details {
    background: var(--dark-surface);
    border-radius: 15px;
    padding: 1.5rem;
    border: 1px solid rgba(139, 0, 255, 0.3);
    display: flex;
    flex-direction: column;
}

.ticket-messages {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--dark-panel);
    border-radius: 10px;
}

.message-item {
    margin-bottom: 1rem;
    padding: 0.8rem;
    border-radius: 8px;
}

.message-item.user {
    background: rgba(0, 191, 255, 0.1);
    margin-left: 20%;
}

.message-item.admin {
    background: rgba(139, 0, 255, 0.1);
    margin-right: 20%;
}

.ticket-response {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ticket-response textarea {
    flex: 1;
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid rgba(139, 0, 255, 0.3);
    background: var(--dark-panel);
    color: var(--text-primary);
    resize: none;
    height: 100px;
}

/* Формы */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border-radius: 8px;
    border: 1px solid rgba(139, 0, 255, 0.3);
    background: var(--dark-panel);
    color: var(--text-primary);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

/* Модальные окна */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
}

.modal-content {
    background-color: var(--dark-surface);
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    border: 1px solid var(--primary);
    position: relative;
}

.close {
    color: var(--text-secondary);
    float: right;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    top: 1rem;
    right: 1.5rem;
}

.close:hover {
    color: var(--primary);
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Адаптивность */
@media (max-width: 1200px) {
    .tickets-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .admin-layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
    }
    
    .nav-menu {
        display: flex;
        overflow-x: auto;
        padding: 0 1rem;
    }
    
    .nav-menu ul {
        display: flex;
        gap: 1rem;
    }
    
    .nav-menu li {
        margin-bottom: 0;
    }
    
    .nav-menu a {
        white-space: nowrap;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .products-list,
    .categories-list,
    .ads-list {
        grid-template-columns: 1fr;
    }
}