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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #1a1a1a;
    color: #e0e0e0;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Contact Section */
.contact-section {
    background: #252525;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.contact-section h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.subtitle {
    color: #a0a0a0;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    background: #1a1a1a;
    border: 1px solid #3a3a3a;
    border-radius: 8px;
    color: #e0e0e0;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066ff;
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

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

.topic-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.topic-btn {
    padding: 0.5rem 1rem;
    background: #3a3a3a;
    border: none;
    border-radius: 6px;
    color: #e0e0e0;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.topic-btn:hover,
.topic-btn.active {
    background: #0066ff;
    color: #ffffff;
}

.submit-btn {
    background: #0066ff;
    color: #ffffff;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-top: 1rem;
}

.submit-btn:hover {
    background: #0052cc;
}

/* Help Section */
.help-section {
}

.help-header {
    text-align: center;
    margin-bottom: 3rem;
}

.help-header h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.help-header p {
    color: #a0a0a0;
    font-size: 1.1rem;
}

.help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.help-card {
    background: #252525;
    padding: 2rem;
    border-radius: 12px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
    border: 1px solid #3a3a3a;
}

.help-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    border-color: #0066ff;
}

.help-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: bold;
}

.wallet-icon { background: #ff9500; color: #fff; }
.security-icon { background: #34c759; color: #fff; }
.trading-icon { background: #007aff; color: #fff; }
.verification-icon { background: #30d158; color: #fff; }
.transaction-icon { background: #ff6b35; color: #fff; }
.support-icon { background: #af52de; color: #fff; }

.help-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.help-card p {
    color: #a0a0a0;
    line-height: 1.5;
}

/* Sidebar Help */
.sidebar-help {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar-card {
    background: #252525;
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid #3a3a3a;
}

.sidebar-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #ffffff;
}

.sidebar-card p {
    color: #a0a0a0;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.quick-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quick-link {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.link-icon {
    font-size: 1.2rem;
    width: 32px;
    height: 32px;
    background: #3a3a3a;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.quick-link h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: #ffffff;
}

.quick-link p {
    color: #a0a0a0;
    font-size: 0.85rem;
    margin: 0;
    line-height: 1.4;
}

.topic-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.topic-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background-color 0.2s ease;
    cursor: pointer;
    color: #e0e0e0;
}

.topic-item:hover {
    background: #3a3a3a;
}

.topic-icon {
    font-size: 1rem;
    width: 24px;
    text-align: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
        padding: 1rem;
        gap: 2rem;
    }
    
    .contact-section {
        padding: 1.5rem;
    }
    
    .contact-section h1 {
        font-size: 2rem;
    }
    
    .help-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .help-card {
        padding: 1.5rem;
    }
    
    .topic-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .topic-btn {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0.5rem;
    }
    
    .contact-section,
    .sidebar-card {
        padding: 1rem;
    }
    
    .help-card {
        padding: 1rem;
    }
}