/* Основные переменные */
:root {
    --bg-dark: #0a0e27;
    --bg-card: #151933;
    --bg-hover: #1a1f3a;
    --neon-cyan: #00d9ff;
    --neon-purple: #b74dff;
    --neon-pink: #ff2e97;
    --text-primary: #e8eaf6;
    --text-secondary: #9fa8da;
    --success: #00ff88;
    --warning: #ffd700;
    --error: #ff4757;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Контейнер */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Шапка сайта */
.header {
    background: var(--bg-card);
    border-bottom: 2px solid var(--neon-cyan);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 217, 255, 0.2);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--neon-cyan);
    font-size: 1.5rem;
    font-weight: bold;
    transition: all 0.3s;
}

.logo:hover {
    color: var(--neon-purple);
    transform: scale(1.05);
}

.logo-icon {
    font-size: 2rem;
}

/* Навигация */
.nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s;
    white-space: nowrap;
}

.nav a:hover {
    color: var(--neon-cyan);
    background: var(--bg-hover);
}

.nav .admin-link {
    color: var(--neon-pink);
}

.nav .btn-login,
.nav .btn-register {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    color: white;
    font-weight: bold;
}

/* Мобильное меню */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--neon-cyan);
    border-radius: 3px;
    transition: all 0.3s;
}

/* Основной контент */
main {
    flex: 1;
    padding: 2rem 0;
}

/* Заголовки */
h1, h2, h3, h4 {
    margin-bottom: 1rem;
    color: var(--neon-cyan);
}

h1 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    text-align: center;
    margin: 2rem 0;
    text-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-top: 2rem;
}

h3 {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
}

/* Карточки */
.card, .tournament-card, .news-card, .venue-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(0, 217, 255, 0.2);
    transition: all 0.3s;
}

.card:hover, .tournament-card:hover, .news-card:hover, .venue-card:hover {
    border-color: var(--neon-cyan);
    box-shadow: 0 8px 30px rgba(0, 217, 255, 0.3);
    transform: translateY(-5px);
}

/* Сетка карточек */
.tournaments-grid, .news-grid, .venues-grid, .gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

/* Кнопки */
.btn, button[type="submit"] {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    color: white;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    transition: all 0.3s;
    text-align: center;
}

.btn:hover, button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 217, 255, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--neon-purple), var(--neon-pink));
}

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

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

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Формы */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-hover);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.3);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

/* Таблицы */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background: var(--bg-hover);
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
}

th {
    color: var(--neon-cyan);
    font-weight: bold;
}

tr:hover {
    background: var(--bg-hover);
}

/* Значки и теги */
.badge, .status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-success {
    background: var(--success);
    color: var(--bg-dark);
}

.badge-warning {
    background: var(--warning);
    color: var(--bg-dark);
}

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

.badge-info {
    background: var(--neon-cyan);
    color: var(--bg-dark);
}

/* Алерты и сообщения */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border-left: 4px solid;
}

.alert-success {
    background: rgba(0, 255, 136, 0.1);
    border-color: var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(255, 71, 87, 0.1);
    border-color: var(--error);
    color: var(--error);
}

.alert-info {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

/* Футер */
.footer {
    background: var(--bg-card);
    border-top: 2px solid var(--neon-purple);
    padding: 2rem 0 1rem;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--neon-purple);
    margin-bottom: 1rem;
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--neon-cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 217, 255, 0.1);
    color: var(--text-secondary);
}

/* Статистика профиля */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.stat-item {
    background: var(--bg-hover);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border: 1px solid rgba(183, 77, 255, 0.3);
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--neon-purple);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* Адаптивность */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-card);
        flex-direction: column;
        padding: 1rem;
        border-top: 1px solid var(--neon-cyan);
    }
    
    .nav.active {
        display: flex;
    }
    
    .tournaments-grid, .news-grid, .venues-grid, .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    table {
        font-size: 0.85rem;
    }
    
    th, td {
        padding: 0.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .card, .tournament-card {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}

/* Скроллбар */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
    border-radius: 10px;
}

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