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

body {
    font-family: 'Poppins', sans-serif;
    background: #f5f7fa;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-container {
    display: flex;
    width: 100%;
    max-width: 1100px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    min-height: 650px;
}

/* Sol Taraf - Özellikler */
.login-left {
    flex: 1;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    padding: 3rem 2.5rem;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.login-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.login-logo i {
    font-size: 2.5rem;
    color: white;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.logo-text .brand {
    font-size: 1.8rem;
    font-weight: 600;
    color: white;
    letter-spacing: -0.5px;
}

.logo-text .tagline {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 300;
}

.login-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.features-header {
    text-align: center;
    margin-bottom: 0.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.features-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.3px;
}

.features-header p {
    font-size: 0.88rem;
    opacity: 0.75;
    font-weight: 300;
}

.feature-item {
    display: flex;
    gap: 0.9rem;
    align-items: center;
    background: transparent;
    padding: 1rem;
    border-radius: 8px;
    border-left: 2px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-left-color: rgba(255, 255, 255, 0.4);
    padding-left: 1.2rem;
}

.feature-icon {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.feature-item:hover .feature-icon {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.05);
}

.feature-content h4 {
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    letter-spacing: -0.2px;
}

.feature-content p {
    font-size: 0.8rem;
    opacity: 0.75;
    line-height: 1.4;
    font-weight: 300;
}

/* Sağ Taraf - Form */
.login-right {
    flex: 1;
    padding: 3rem 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
}

.form-container {
    width: 100%;
    max-width: 450px;
    position: relative;
}

.form-box {
    display: none;
    animation: fadeIn 0.5s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h2 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.form-header p {
    color: #7f8c8d;
    font-size: 0.9rem;
    font-weight: 300;
}

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

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-group label i {
    color: #4a90e2;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid #e1e8ed;
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
    background: #fafbfc;
}

.form-group input:focus {
    outline: none;
    border-color: #4a90e2;
    background: white;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.08);
}

.password-input {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input input {
    padding-right: 3rem;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: #7f8c8d;
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.3s ease;
}

.toggle-password:hover {
    color: #4a90e2;
}

.password-strength {
    height: 3px;
    background: #e1e8ed;
    border-radius: 2px;
    margin-top: 0.5rem;
    overflow: hidden;
}

.password-strength::before {
    content: '';
    display: block;
    height: 100%;
    width: 0;
    background: #e74c3c;
    transition: all 0.3s ease;
}

.password-strength.weak::before {
    width: 33%;
    background: #e74c3c;
}

.password-strength.medium::before {
    width: 66%;
    background: #f39c12;
}

.password-strength.strong::before {
    width: 100%;
    background: #27ae60;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: -0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: #2c3e50;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #4a90e2;
}

.forgot-link,
.terms-link {
    color: #4a90e2;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.forgot-link:hover,
.terms-link:hover {
    color: #667eea;
}

.btn-submit {
    width: 100%;
    padding: 0.95rem;
    background: linear-gradient(135deg, #4a90e2 0%, #667eea 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 16px rgba(74, 144, 226, 0.25);
}

.form-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #7f8c8d;
    font-size: 0.9rem;
}

.form-divider::before,
.form-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #e1e8ed;
}

.social-login {
    display: flex;
    gap: 1rem;
}

.social-btn {
    flex: 1;
    padding: 0.85rem;
    border: 1px solid #e1e8ed;
    background: #fafbfc;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.social-btn:hover {
    transform: translateY(-1px);
    background: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.social-btn.google {
    color: #db4437;
}

.social-btn.google:hover {
    background: #db4437;
    color: white;
    border-color: #db4437;
}

.social-btn.facebook {
    color: #4267B2;
}

.social-btn.facebook:hover {
    background: #4267B2;
    color: white;
    border-color: #4267B2;
}

.form-switch {
    text-align: center;
    margin-top: 1rem;
}

.form-switch p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.form-switch a {
    color: #4a90e2;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.form-switch a:hover {
    color: #667eea;
}

/* Responsive */
@media (max-width: 992px) {
    .login-container {
        flex-direction: column;
    }
    
    .login-left {
        padding: 2rem;
    }
    
    .login-features {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    
    .feature-item {
        padding: 1rem;
    }
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    
    .login-container {
        border-radius: 15px;
    }
    
    .login-left,
    .login-right {
        padding: 2rem 1.5rem;
    }
    
    .login-features {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .social-login {
        flex-direction: column;
    }
    
    .form-header h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .login-logo h1 {
        font-size: 2rem;
    }
    
    .login-logo i {
        font-size: 3rem;
    }
    
    .feature-item {
        gap: 1rem;
    }
    
    .feature-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}