/* ======================================= */
/* DEĞİŞKENLER (Variables)                 */
/* ======================================= */
:root {
    --primary-color: #2c4f84; /* Örnek ana renk */
    --text-light: #ffffff;
    --text-dark: #333333;
    --transition: all 0.3s ease;
}

/* ======================================= */
/* HEADER ve NAVİGASYON STİLLERİ           */
/* ======================================= */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
    background: #2c4f84;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Kaydırmada (Scrolled) Efekt */
.main-header.scrolled {
    background: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

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

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
}


/* ANA LİNKLER (nav-links) */
.nav-links {
    display: flex;
    list-style: none;
    gap: 5px;
    align-items: center;
    margin: 0;
    padding: 0;
    order: 2;
}

/* Masaüstünde Hamburger Butonunu Gizle */
.mobile-menu-toggle {
    display: none;
}
 
/* Masaüstü Link Stilleri */
.nav-links > li > a {
    text-decoration: none;
    padding: 10px 18px;
    color: var(--text-light);
    font-weight: 500;
    font-size: 15px;
    border-radius: 8px;
    transition: var(--transition);
}

.main-header.scrolled .nav-links > li > a {
    color: var(--text-dark);
}

.nav-links > li > a:hover,
.nav-links > li > a.active {
    background: rgba(255, 255, 255, 0.1);
}

.main-header.scrolled .nav-links > li > a:hover {
    background: rgba(0, 0, 0, 0.05);
}

/* DROPDOWN (Masaüstü) */
.dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: '▼';
    font-size: 8px;
    margin-left: 6px;
    display: inline-block;
    transition: transform 0.3s ease;
}

@media (min-width: 993px) {
    .dropdown:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .dropdown-menu {
        position: absolute;
        top: 100%;
        left: 0;
        min-width: 250px;
        background: #fff;
        border-radius: 12px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(10px);
        transition: var(--transition);
        padding: 10px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        border: 1px solid #eee;
        list-style: none;
    }

    .dropdown-menu li a {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 15px;
        color: var(--text-dark);
        text-decoration: none;
        font-size: 14px;
        border-radius: 6px;
        transition: var(--transition);
    }

    .dropdown-menu li a:hover {
        background: #f8f9fa;
        color: var(--primary-color);
    }
}

/* YARDIMCI NAVİGASYON (Utility) */
.utility-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-left: 20px;
    order: 3;
}

.social-icons {
    display: flex;
    gap: 12px;
}

.utility-nav a {
    color: var(--text-light);
    font-size: 18px;
    transition: var(--transition);
    text-decoration: none;
}

.main-header.scrolled .utility-nav a {
    color: var(--text-dark);
}

.utility-nav a:hover {
    opacity: 0.8;
    transform: translateY(-2px);
}

/* HAMBURGER BUTON STİLİ */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-toggle span {
    width: 30px;
    height: 3px;
    background: #ffffff; /* Varsayılan renk */
    border-radius: 10px;
    transition: all 0.3s linear;
    position: relative;
    transform-origin: 1px;
}

/* Scroll edildiğinde hamburger rengini koyulaştır */
.main-header.scrolled .mobile-menu-toggle span {
    background: var(--text-dark);
}

/* Menü Açıkken (X Efekti) */
.mobile-menu-toggle.open span:first-child {
    transform: rotate(45deg);
}
.mobile-menu-toggle.open span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-toggle.open span:nth-child(3) {
    transform: rotate(-45deg);
}

.header-logo{
    height: 46px;
    width: auto;
    display: block;
    transition: opacity .25s ease;
}

/* Menü açıkken arkada oluşan karartma katmanı */
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}
.menu-overlay.active {
    display: block;
}
/* Başlangıç */
.logo-default{ display: block; }
.logo-scrolled{ display: none; }

/* Scroll sonrası */
.main-header.scrolled .logo-default{ display: none; }
.main-header.scrolled .logo-scrolled{ display: block; }

@media (max-width: 992px) {
    .mobile-menu-toggle {
        display: flex;
    }

    /* Sağdan Kayarak Gelen Panel */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%; /* Menü kapalıyken dışarıda */
        width: 280px;
        height: 100vh;
        background: #2c4f84; /* AKKDER Mavi */
        flex-direction: column;
        padding: 80px 20px;
        transition: right 0.4s cubic-bezier(0.77,0.2,0.05,1.0);
        box-shadow: -10px 0 20px rgba(0,0,0,0.2);
        z-index: 1000;
    }

    .nav-links.active {
        right: 0; /* Menü açıldığında */
    }

    .nav-links li {
        width: 100%;
        margin-bottom: 10px;
    }

    .nav-links li a {
        font-size: 16px;
        padding: 12px 15px;
        display: block;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        color: #fff !important; /* Mobilde her zaman beyaz metin */
    }

    /* MOBİL DROPDOWN AYARI */
    .dropdown-menu {
        display: none; /* Varsayılan olarak gizli (JS ile açılacak) */
        position: static;
        background: rgba(0,0,0,0.1);
        padding-left: 20px;
    }

    .dropdown.active .dropdown-menu {
        display: block; /* JS 'active' sınıfı eklediğinde görünür */
    }

    .dropdown-toggle::after {
        float: right;
    }
}