.auth-container {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.auth-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    padding: 40px;
    width: 100%;
    max-width: 500px;
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-header h1 {
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 8px;
}

.auth-header p {
    color: #666;
    font-size: 1rem;
    margin: 0;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: #333;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(31, 54, 211, 0.1);
}

.form-input.error {
    border-color: #e74c3c;
}

.password-strength {
    margin-top: 8px;
    font-size: 0.85rem;
}

.strength-bar {
    height: 4px;
    background: #e0e0e0;
    border-radius: 2px;
    margin-top: 4px;
    overflow: hidden;
}

.strength-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.3s ease, background 0.3s ease;
}

.strength-weak { background: #e74c3c; width: 25%; }
.strength-fair { background: #f39c12; width: 50%; }
.strength-good { background: #3498db; width: 75%; }
.strength-strong { background: #27ae60; width: 100%; }

.auth-btn {
    width: 100%;
    padding: 16px;
    font-size: 1.1rem;
    margin-top: 16px;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #e0e0e0;
}

.auth-footer p {
    font-size: 0.95rem;
    color: #666;
    margin: 0;
}

.auth-footer a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}

.auth-footer a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .auth-card {
        padding: 24px;
    }
}