.auth-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 2rem;
}

.auth-box {
    background: rgba(20, 20, 20, 0.95);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 2rem;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
    color: #ffffff;
}

.auth-box h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: #ffffff;
    font-size: 2rem;
}

.auth-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid #e4e6eb;
}

.auth-tabs .tab-btn {
    flex: 1;
    padding: 0.75rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    color: #65676b;
    transition: all 0.2s;
    margin-bottom: -2px;
}

.auth-tabs .tab-btn:hover {
    color: #1877f2;
}

.auth-tabs .tab-btn.active {
    color: #1877f2;
    border-bottom-color: #1877f2;
    font-weight: 600;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.form-group {
    margin-bottom: 1.25rem;
}

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

.form-group input {
    width: 100%;
    padding: 0.75rem;
    background: rgba(40, 40, 40, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    font-size: 1rem;
    color: #ffffff;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: rgba(187, 134, 252, 0.5);
    background: rgba(50, 50, 50, 0.9);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 480px) {
    .auth-box {
        padding: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}