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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Навигация */
.navbar {
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #007bff;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #007bff;
}

.user-balance {
    background: #e9ecef;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* Герой секция */
.hero {
    background: linear-gradient(135deg, #007bff, #00bcd4);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: #007bff;
    color: white;
}

.btn-primary:hover {
    background: #0056b3;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #545b62;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Карточки функций */
.features {
    padding: 4rem 0;
}

.features h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
}

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

.feature {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.feature h3 {
    margin-bottom: 1rem;
    color: #007bff;
}

/* Формы */
.auth-form {
    max-width: 400px;
    margin: 2rem auto;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.auth-form h1 {
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #007bff;
}

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

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Статистика в кабинете */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card h3 {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: #007bff;
}

/* Таблицы */
table {
    width: 100%;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin: 1rem 0;
}

thead {
    background: #f8f9fa;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

th {
    font-weight: 600;
    color: #495057;
}

tbody tr:hover {
    background: #f8f9fa;
}

/* Статусы */
.status {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

.status.approved {
    background: #d4edda;
    color: #155724;
}

.status.pending {
    background: #fff3cd;
    color: #856404;
}

.status.rejected {
    background: #f8d7da;
    color: #721c24;
}

/* Коды */
.code-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.code-section {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.code-box {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1rem;
}

.code-box textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9rem;
    resize: none;
    background: white;
}

.code-box button {
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.code-box button:hover {
    background: #218838;
}

/* Реферальная система */
.referral-section {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 2rem;
}

.referral-link {
    margin: 1.5rem 0;
}

.link-box {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.link-box input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.link-box button {
    padding: 0.5rem 1rem;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.link-box button:hover {
    background: #0056b3;
}

/* Инструкции */
.instructions {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 2rem;
}

.instructions ol {
    margin-left: 1.5rem;
    margin-top: 1rem;
}

/* Футер */
footer {
    background: #343a40;
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
    text-align: center;
}

/* Адаптивность */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .code-sections {
        grid-template-columns: 1fr;
    }
    
    table {
        display: block;
        overflow-x: auto;
    }
}