.auth-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 60px 6vw 80px;
}

.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 6px;
}

.auth-tab {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: 'Space Mono', monospace;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.auth-tab.active {
    background: var(--accent);
    color: #080808;
}

.auth-header {
    text-align: center;
    margin-bottom: 24px;
}

.auth-title {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 32px;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.auth-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

.auth-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 40px;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-submit {
    width: 100%;
    margin-top: 24px;
}

.referral-banner {
    background: var(--accent-dim);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
}

.referral-banner-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.referral-banner-text {
    flex: 1;
}

.referral-banner-title {
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 4px;
}

.referral-banner-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .auth-container {
        padding: 40px 20px 60px;
    }
    
    .auth-card {
        padding: 24px;
    }
    
    .auth-title {
        font-size: 28px;
    }
}