/* Genel Ayarlar ve Responsive Tasarım */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f8fafc; /* Çok açık grimsi mavi */
    color: #1e293b; /* Koyu gri/mavi yazı rengi */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Üst Menü (Navigasyon) */
header {
    background-color: #4f46e5; /* Modern Çivit Mavisi */
    padding: 15px 20px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    color: #ffffff;
    font-size: 26px;
    font-weight: 800;
    text-decoration: none;
    letter-spacing: 1px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 10px;
}

.nav-links a {
    color: #ffffff;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-links a:hover {
    background-color: #4338ca; /* Üzerine gelince biraz daha koyu mavi */
    transform: translateY(-2px); /* Üzerine gelince hafif yukarı kalkma efekti */
}

/* Sayfa İçeriği Alanı */
.container {
    flex: 1;
    max-width: 1200px;
    margin: 40px auto;
    padding: 30px;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    width: 90%;
    line-height: 1.6;
}

h1 {
    color: #4f46e5;
    margin-bottom: 15px;
}

/* Alt Kısım (Footer) */
footer {
    background-color: #1e293b; /* Koyu Lacivert/Gri */
    color: #94a3b8;
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
    font-size: 14px;
}

/* Telefonlar için Responsive (Küçük Ekran) Ayarı */
@media (max-width: 768px) {
    header nav {
        flex-direction: column;
        gap: 15px;
    }
    .nav-links {
        flex-direction: column;
        text-align: center;
        width: 100%;
    }
    .nav-links li {
        width: 100%;
    }
    .nav-links a {
        display: block;
        width: 100%;
    }
}/* Form Elemanları Tasarımı */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #4f46e5;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus, 
.form-group textarea:focus {
    border-color: #4f46e5;
    outline: none;
}

.btn {
    background-color: #4f46e5;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #4338ca;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 15px;
}/* Tablo ve Ekstra Buton Tasarımları */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table th, table td {
    padding: 12px;
    border: 1px solid #e2e8f0;
    text-align: left;
}

table th {
    background-color: #4f46e5;
    color: white;
}

table tr:nth-child(even) {
    background-color: #f8fafc;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
    text-decoration: none;
    border-radius: 6px;
    margin-right: 5px;
    display: inline-block;
    font-weight: bold;
    transition: 0.3s;
}

.btn-danger {
    background-color: #ef4444;
    color: white;
}

.btn-danger:hover { background-color: #dc2626; }

.btn-warning {
    background-color: #f59e0b;
    color: white;
}

.btn-warning:hover { background-color: #d97706; }