/* ============================================
   GÜNCELLENMİŞ MODERN HEADER STİLLERİ
============================================= */
:root {
    --header-height: 80px;
}
html, body {
    max-width: 100%;
    overflow-x: hidden; /* Sağ tarafa kaymayı tamamen engeller */
}
/* ============================================
   HEADER STİLLERİ (Masaüstü & Genel)
============================================= */
.main-header {
    height: var(--header-height);
    background-color: transparent; /* index.html için varsayılan transparan */
    display: flex;
    align-items: center;
    position: absolute; 
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo img {
    height: clamp(35px, 5vw, 45px); 
    width: auto;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.logo img:hover {
    transform: scale(1.03);
}

.main-nav a i {
    display: none; 
}

/* Masaüstü Menü İyileştirmeleri */
.main-nav ul {
    display: flex;
    gap: 8px; 
    list-style: none;
    margin: 0;
    padding: 6px 12px;
    background: rgba(9, 46, 61, 0.05); /* Modern soft kapsül arka planı */
    border-radius: 50px;
    border: 1px solid rgba(9, 46, 61, 0.08);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.main-nav a {
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.8px;
    position: relative;
    text-decoration: none;
    color: #092e3d;
    padding: 8px 18px;
    border-radius: 25px;
    transition: all 0.3s ease;
    display: inline-block;
}

/* Çizgi efektini kaldırıp modern buton vurgusuna geçiyoruz */
.main-nav a::after {
    display: none;
}

.main-nav a:hover {
    color: var(--text-color, #092e3d);
    background-color: rgba(255, 255, 255, 0.6);
}

/* Aktif Sayfa Buton Efekti */
.main-nav a.active {
    color: #ffffff !important;
    background-color: #092e3d;
    box-shadow: 0 4px 12px rgba(9, 46, 61, 0.2);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.lang-selector {
    font-size: 0.9rem;
    font-weight: 500;
}

.lang-selector a {
    color: rgba(16, 78, 84, 0.6);
}

.lang-selector a.active {
    color: var(--text-color);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 28px;
    color: var(--primary-color);
    padding: 0;
    z-index: 1100;
}

.bar {
    width: 100%;
    height: 3px;
    background-color: var(--text-color);
    transition: all 0.3s ease;
}

/* İç Sayfalar İçin Beyaz Header */
.main-header.header-white {
    background-color: rgba(255, 255, 255, 0.92);
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* ============================================
   RESPONSIVE (MOBİL & TABLET)
============================================= */

@media (max-width: 1023px) {
    .menu-toggle {
        display: block !important;
        position: relative;
        z-index: 1200;
    }

    /* Beyaz Paneli X İkonunun Altından Başlatıyoruz */
    .main-nav {
        position: fixed; 
        top: var(--header-height); /* Header'ın/X ikonunun hemen altı */
        right: 0; 
        left: auto; 
        width: 60%; /* Panelin genişliği */
        /* Telefonda %65 kaplar, iPad gibi tabletlerde 280px'i geçmez */
        width: 65%; 
        max-width: 280px; 
        min-width: 220px;
        height: calc(100vh - var(--header-height)); /* Sayfanın kalan yüksekliği */
        background-color: #ffffff;
        padding-top: 0; /* İç üst boşluk tamamen sıfırlandı */
        box-shadow: -10px 10px 30px rgba(0, 0, 0, 0.12); 
        border-top: none;
        opacity: 0;
        visibility: hidden;
        transform: translateX(100%); 
        transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), opacity 0.3s ease; 
        z-index: 1100;
    }

    .main-nav.open {
        opacity: 1;
        visibility: visible;
        transform: translateX(0); 
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0; 
        align-items: stretch;
        background: transparent;
        border: none;
        border-radius: 0;
        padding: 0;
    }

    .main-nav li {
        width: 100%;
    }

    .main-nav a {
        display: flex;
        align-items: center;
        justify-content: flex-start; 
        gap: 16px; 
        padding: 18px 20px; 
        font-size: 0.92rem;
        font-weight: 800;
        letter-spacing: 0.8px;
        color: #092e3d;
        border-bottom: 1px solid #f0f4f5;
        border-left: 4px solid transparent;
        border-radius: 0;
        background-color: transparent;
        transition: all 0.2s ease;
    }

    /* İkon Stilleri */
    .main-nav a i {
        display: inline-block !important; 
        font-size: 1.15rem;
        color: #008f9c;
        width: 24px; 
        text-align: center;
    }

    /* Aktif / Hover Durumu (Görseldeki Gibi Yeşil Sol Şerit ve Arka Plan) */
    .main-nav a:hover,
    .main-nav a.active {
        background-color: #f2f9f9 !important; 
        color: #092e3d !important;
        border-left: 4px solid #008f9c !important;
        box-shadow: none !important;
    }

    .main-nav a.active i,
    .main-nav a:hover i {
        color: #008f9c !important;
    }

    .main-nav a::after,
    .main-nav a.active::after {
        display: none !important;
    }
}

@media (max-width: 767px) {
    :root {
        --header-height: 70px;
    }
}