/* Genel Stil Ayarları */
body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f7f6; /* Hafif gri arka plan */
    color: #333;
    line-height: 1.6;
}

a {
    color: #006699; /* Kurumsal mavi */
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

h1, h2, h3 {
    color: #2c3e50; /* Koyu mavi-gri başlıklar */
    text-align: center;
    margin-bottom: 20px;
}

/* Header ve Navigasyon */
header {
    background-color: #2c3e50;
    color: white;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.logo {
    font-size: 1.5em;
    font-weight: 700;
}

#main-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
}

#main-nav ul li a {
    color: white;
    padding: 10px 15px;
    display: block;
    transition: background-color 0.3s;
}

#main-nav ul li a:hover {
    background-color: #34495e;
    text-decoration: none;
}

.menu-toggle {
    display: none; /* Masaüstünde gizle */
    background: none;
    border: none;
    color: white;
    font-size: 1.5em;
    cursor: pointer;
}

/* Ana Bölümler */
main {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

section {
    padding: 40px 20px;
    margin-bottom: 30px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

/* Hero Alanı */
.hero {
    text-align: center;
    background-color: #ecf0f1;
    border-left: 5px solid #006699;
    padding: 60px 20px;
}

.hero h1 {
    font-size: 2.5em;
    margin-top: 0;
    color: #006699;
}

.cta-button {
    display: inline-block;
    background-color: #e67e22; /* Turuncu-kahve buton */
    color: white;
    padding: 10px 25px;
    border-radius: 5px;
    margin-top: 15px;
    font-weight: 700;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: #d35400;
    text-decoration: none;
}

/* Görsel Bölümü */
.image-section {
    padding: 0;
    box-shadow: none;
    background-color: transparent;
}

.image-box img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    object-fit: cover;
}

/* Kaynak Listesi */
.sources-list h2 {
    border-bottom: 2px solid #bdc3c7;
    padding-bottom: 10px;
}

.source-item {
    display: flex;
    align-items: flex-start;
    padding: 20px 0;
    border-bottom: 1px dashed #ecf0f1;
}

.source-number {
    font-size: 2em;
    font-weight: 700;
    color: #006699;
    margin-right: 20px;
}

.source-item.highlighted {
    background-color: #f7f9fa;
    border-radius: 5px;
    padding-left: 10px;
    margin-bottom: 15px;
}

.source-item h3 {
    margin: 0 0 5px 0;
    text-align: left;
}

.source-group {
    padding: 20px;
    background-color: #ecf0f1;
    border-radius: 5px;
    margin-top: 20px;
}

.source-group ul {
    list-style: circle;
    padding-left: 25px;
}

/* Önem Bölümü (Kartlar) */
.importance {
    text-align: center;
    background-color: #e6eef5;
}

.importance h2 {
    color: #006699;
}

.importance-card {
    display: inline-block;
    width: 45%; /* İki kart yan yana */
    margin: 10px 2%;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 8px;
    vertical-align: top;
    background-color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.importance-card img {
    border-radius: 50%;
    margin-bottom: 15px;
}

/* Footer */
footer {
    background-color: #34495e;
    color: white;
    text-align: center;
    padding: 20px;
    font-size: 0.9em;
}

/* Mobil Uyum (Responsive Tasarım) */
@media (max-width: 768px) {
    
    /* Mobil Menü Gösterimi */
    #main-nav {
        display: none; /* Varsayılan olarak gizle */
        width: 100%;
        text-align: center;
        margin-top: 10px;
    }

    #main-nav.active {
        display: block; /* Tıklayınca göster */
    }

    #main-nav ul {
        flex-direction: column;
    }

    #main-nav ul li a {
        padding: 10px;
        border-bottom: 1px solid #34495e;
    }

    .menu-toggle {
        display: block; /* Mobil cihazda göster */
    }

    header {
        flex-wrap: wrap;
    }

    /* Kartların Alt Alta Gelmesi */
    .importance-card {
        width: 90%;
        display: block;
        margin: 10px auto;
    }
}