/* 
 * KTU Not v2.0
 * Ana Stil Dosyası
 */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: #0073aa;
    transition: color 0.3s ease;
}

a:hover {
    color: #005b87;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.site-content {
    flex: 1;
}

/* Yardımcı Sınıflar */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.py-20 {
    padding-top: 20px;
    padding-bottom: 20px;
}

.hidden {
    display: none;
}

/* Butonlar */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #0073aa;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: #005b87;
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background-color: #4CAF50;
}

.btn-secondary:hover {
    background-color: #3d8b40;
}

/* Formlar */
input, select, textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: #0073aa;
    box-shadow: 0 0 5px rgba(0, 115, 170, 0.3);
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

/* Uyarı Mesajları */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Duyarlı Tasarım */
@media (max-width: 768px) {
    .container {
        padding: 0 10px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 14px;
    }
}