.auth-container {
            max-width: 400px;
            margin: 3rem auto;
            padding: 2rem;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .auth-tabs {
            display: flex;
            margin-bottom: 2rem;
            border-bottom: 2px solid var(--border-color);
        }

        .auth-tab {
            flex: 1;
            padding: 1rem;
            text-align: center;
            cursor: pointer;
            color: #666;
            transition: all 0.3s;
        }

        .auth-tab.active {
            color: var(--primary-color);
            border-bottom: 2px solid var(--primary-color);
            margin-bottom: -2px;
        }

        .auth-form {
            display: none;
        }

        .auth-form.active {
            display: block;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            color: #666;
        }

        .form-group input {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            transition: border-color 0.3s;
        }

        .form-group input:focus {
            border-color: var(--primary-color);
            outline: none;
        }

        .auth-button {
            width: 100%;
            padding: 1rem;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s;
        }

        .auth-button:hover {
            background-color: var(--secondary-color);
        }

        .forgot-password {
            display: block;
            text-align: right;
            color: #666;
            text-decoration: none;
            margin: 1rem 0;
            font-size: 0.9rem;
        }

        .forgot-password:hover {
            color: var(--primary-color);
        }

        .social-login {
            margin-top: 2rem;
            text-align: center;
        }

        .social-login p {
            color: #666;
            margin-bottom: 1rem;
        }

        .social-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
        }

        .social-button {
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            background: none;
            cursor: pointer;
            transition: all 0.3s;
        }

        .social-button:hover {
            background-color: #f5f5f5;
        }

        .social-button i {
            font-size: 1.2rem;
        }

        .facebook { color: #1877f2; }
        .google { color: #db4437; }

        .error-message {
            color: #dc3545;
            font-size: 0.9rem;
            margin-top: 0.5rem;
            display: none;
        }

/* Login ve Register Sayfaları için Stiller */
.login-section,
.register-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: calc(100vh - 400px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container,
.register-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
    display: flex;
    justify-content: center;
}

.login-box,
.register-box {
    background: #fff;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 100%;
    max-width: 450px;
}

.login-box:hover,
.register-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.login-box h2,
.register-box h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 35px;
    font-size: 32px;
    font-weight: 700;
    position: relative;
}

.login-box h2::after,
.register-box h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #2ecc71);
    margin: 15px auto 0;
    border-radius: 4px;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #34495e;
    font-weight: 500;
    font-size: 15px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"] {
    width: 100%;
    padding: 14px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
    background-color: #f8f9fa;
    color: #2c3e50;
}

.form-group input:focus {
    border-color: #3498db;
    outline: none;
    background-color: #fff;
    box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.1);
}

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    margin-bottom: 25px;
    color: #7f8c8d;
}

.remember-forgot label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: #7f8c8d;
}

.remember-forgot input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #3498db;
}

.remember-forgot a {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.remember-forgot a:hover {
    color: #2980b9;
}

.terms {
    margin-bottom: 25px;
    font-size: 14px;
    color: #7f8c8d;
}

.terms label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.terms input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #3498db;
}

.terms a {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.terms a:hover {
    color: #2980b9;
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: #45a049;
}

.login-link,
.register-link {
    text-align: center;
    margin-top: 25px;
    font-size: 14px;
    color: #7f8c8d;
}

.login-link a,
.register-link a {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.login-link a:hover,
.register-link a:hover {
    color: #2980b9;
}

/* Error message styling */
.error-message {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
    display: block;
    animation: fadeIn 0.3s ease;
}

/* Success message styling */
.success-message {
    color: #2ecc71;
    font-size: 14px;
    margin-top: 5px;
    display: block;
    animation: fadeIn 0.3s ease;
}

/* Loading state for button */
.btn-primary.loading {
    position: relative;
    color: transparent;
}

.btn-primary.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .login-section,
    .register-section {
        padding: 40px 0;
    }

    .login-container,
    .register-container {
        padding: 15px;
    }

    .login-box,
    .register-box {
        padding: 30px 20px;
        max-width: 100%;
    }

    .login-box h2,
    .register-box h2 {
        font-size: 24px;
        margin-bottom: 25px;
    }

    .remember-forgot {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="password"],
    .form-group input[type="tel"] {
        padding: 12px 15px;
    }
}

.register-section {
    padding: 40px 0;
    background-color: #f8f9fa;
    min-height: calc(100vh - 200px);
}

.register-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
}

.register-box {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

.register-box h2 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 24px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    border-color: #4CAF50;
    outline: none;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.1);
}

.password-input-container {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #666;
}

.terms-container {
    margin: 25px 0;
}

.terms-checkbox {
    display: flex;
    align-items: flex-start;
    margin-bottom: 10px;
}

.terms-checkbox input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
    margin-top: 4px;
}

.terms-text {
    font-size: 14px;
    color: #666;
    line-height: 1.4;
}

.terms-text a {
    color: #4CAF50;
    text-decoration: none;
    font-weight: 500;
}

.terms-text a:hover {
    text-decoration: underline;
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: #45a049;
}

.login-link {
    text-align: center;
    margin-top: 20px;
    color: #666;
    font-size: 14px;
}

.login-link a {
    color: #4CAF50;
    text-decoration: none;
    font-weight: 500;
}

.login-link a:hover {
    text-decoration: underline;
}

/* Hata durumları için stiller */
.form-group input.error {
    border-color: #dc3545;
}

.error-message {
    color: #dc3545;
    font-size: 12px;
    margin-top: 5px;
}

/* Mobil uyumluluk */
@media screen and (max-width: 768px) {
    .register-container {
        padding: 10px;
    }

    .register-box {
        padding: 20px;
    }

    .form-group input {
        padding: 10px 12px;
    }

    .btn-primary {
        padding: 12px;
    }
}