/* Genel Stiller */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #2c3e50;
    --light-gray: #ecf0f1;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    width: 400px;
    max-width: 90%;
}

.login-logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-logo img {
    max-width: 150px;
}

.login-title {
    text-align: center;
    color: var(--text-color);
    margin-bottom: 30px;
    font-size: 24px;
    font-weight: 600;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--light-gray);
    border-radius: 5px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 5px rgba(52,152,219,0.3);
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: var(--secondary-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-btn:hover {
    background: var(--primary-color);
}

.error-message {
    background: #fce4e4;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
    text-align: center;
}

.success-message {
    background: #e8f5e9;
    border: 1px solid #4caf50;
    color: #4caf50;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
    text-align: center;
}

/* Responsive Tasarım */
@media (max-width: 480px) {
    .login-container {
        padding: 20px;
    }
    
    .login-title {
        font-size: 20px;
    }
    
    .form-group input {
        padding: 10px 12px;
    }
    
    .login-btn {
        padding: 10px;
        font-size: 14px;
    }
}