/* style.css - DASELSAN "TAM BEYAZ TEMA" SÜRÜMÜ */

/* --- 1. RENK VE TEMEL AYARLAR --- */
:root {
    --ana-renk: #0a1122;      /* Lacivert (Kurumsal - Artık Yazılarda Kullanılacak) */
    --vurgu-renk: #b71540;    /* Kırmızı (Aksiyon) */
    --arka-plan: #f8f9fa;     /* Sayfa Zemini (Çok açık gri) */
    --beyaz: #ffffff;         /* Saf Beyaz */
    --yazi-rengi: #2d3436;    /* Koyu Gri Metin */
}

html { scroll-behavior: smooth; }

body { 
    margin: 0; padding: 0; 
    background-color: var(--arka-plan); 
    color: var(--yazi-rengi); 
    font-family: 'Segoe UI', sans-serif; 
    text-align: center; 
    overflow-x: hidden; 
}

/* --- 2. NAVBAR (ÜST MENÜ - ARTIK BEYAZ) --- */
nav { 
    background-color: var(--beyaz); /* Mavi gitti, BEYAZ geldi */
    padding: 0 40px; 
    display: flex; justify-content: space-between; align-items: center; 
    height: 90px; 
    box-shadow: 0 4px 20px rgba(0,0,0,0.08); /* Gölgeyi yumuşattık */
    position: sticky; top: 0; width: 100%; 
    box-sizing: border-box; 
    z-index: 9999;
    border-bottom: 3px solid var(--vurgu-renk); /* Altına kırmızı çizgi */
}

/* LOGO ALANI */
.logo-alani {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 15px;
}

.logo-resim {
    height: 55px; width: auto;
}

.marka-kutusu {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

/* Marka Adı Artık LACİVERT (Çünkü zemin beyaz) */
.marka-adi {
    font-size: 24px;
    font-weight: 800;
    color: var(--ana-renk); 
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Alt Yazı Artık KOYU GRİ */
.marka-alt-yazi {
    font-size: 11px;
    color: #636e72; 
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Menü Linkleri */
.menu-linkleri { height: 100%; display: flex; align-items: center; }

.dropdown { position: relative; height: 100%; display: flex; align-items: center; }

/* Link Yazıları Artık LACİVERT */
.dropbtn { 
    font-size: 14px; font-weight: 700; border: none; outline: none; 
    color: var(--ana-renk); /* Beyaz yerine Lacivert */
    padding: 0 20px; 
    background-color: transparent; 
    font-family: inherit; cursor: pointer; text-transform: uppercase; 
    text-decoration: none; transition: 0.3s; letter-spacing: 1px; 
    height: 100%; display: flex; align-items: center;
}

.dropdown:hover .dropbtn { 
    background-color: #f1f2f6; /* Hover olunca açık gri zemin */
    color: var(--vurgu-renk);  /* Yazı kırmızı olsun */
}

/* Dil Seçeneği Kısmı (TR | EN) */
.dil-secenegi span {
    color: var(--ana-renk) !important; /* TR yazısı lacivert olsun */
}

.dropdown-content { 
    display: none; position: absolute; top: 100%; left: 0; 
    background-color: var(--beyaz); min-width: 260px; 
    box-shadow: 0 10px 30px rgba(0,0,0,0.1); z-index: 10000; 
    text-align: left; border-top: 3px solid var(--vurgu-renk); 
}
.dropdown:hover .dropdown-content { display: block; }

.dropdown-content a { 
    color: var(--yazi-rengi); padding: 15px 20px; text-decoration: none; 
    display: block; font-size: 14px; border-bottom: 1px solid #f1f1f1; font-weight: 600; 
}
.dropdown-content a:hover { background-color: #f8f9fa; color: var(--vurgu-renk); padding-left: 25px; transition: 0.2s; }

/* --- 3. FOOTER (ALT BANNER - ARTIK BEYAZ) --- */
footer { 
    margin-top: 80px; 
    background-color: var(--beyaz); /* Mavi gitti, BEYAZ geldi */
    color: var(--ana-renk);         /* Yazılar koyu renk */
    padding: 40px 20px; 
    text-align: center; 
    border-top: 5px solid var(--vurgu-renk); 
    box-shadow: 0 -5px 20px rgba(0,0,0,0.05); /* Üstüne hafif gölge */
    font-weight: 600;
}

/* --- 4. DİĞER STANDART STİLLER (AYNI KALDI) --- */
.container { max-width: 1200px; margin: 0 auto; padding: 40px 20px; }

.hero-header { 
    background-size: cover; background-position: center; 
    color: var(--beyaz); padding: 100px 20px; margin-bottom: 40px; 
    border-bottom: 5px solid var(--vurgu-renk); 
}

h2 { color: var(--ana-renk); border-bottom: 3px solid var(--vurgu-renk); padding-bottom: 10px; margin-top: 50px; display: inline-block; text-transform: uppercase; }

/* Yönetim Kurulu Kartları */
.yonetim-hiyerarsi { display: flex; flex-direction: column; align-items: center; gap: 40px; margin-top: 40px; }
.alt-yonetim-satiri { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.yonetici-karti { background: var(--beyaz); padding: 30px; border-radius: 8px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); border-top: 5px solid var(--ana-renk); width: 350px; text-align: center; transition: 0.3s; }
.yonetici-karti:hover { transform: translateY(-5px); border-top-color: var(--vurgu-renk); box-shadow: 0 15px 30px rgba(0,0,0,0.1); }
.yonetici-unvan { color: var(--vurgu-renk); font-weight: bold; font-size: 14px; margin-bottom: 5px; display: block;}
.yonetici-isim { font-size: 20px; font-weight: 800; color: var(--ana-renk); margin-bottom: 15px; }
.iletisim-bilgisi { font-size: 13px; color: #666; margin-top: 5px; display: block; }
.iletisim-bilgisi i { color: var(--vurgu-renk); margin-right: 5px; }

/* İletişim Formu ve Kartlar */
.iletisim-kapsayici { display: flex; flex-wrap: wrap; gap: 40px; justify-content: center; text-align: left; margin-bottom: 50px; }
.form-alani { flex: 1; min-width: 350px; background: var(--beyaz); padding: 40px; border-radius: 4px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); border-top: 5px solid var(--ana-renk); }
.harita-alani { flex: 1; min-width: 350px; height: 400px; background: #eee; border-radius: 4px; overflow: hidden; border: 1px solid #ddd; }
input, textarea, select { width: 100%; padding: 15px; margin: 5px 0 20px; border: 1px solid #dfe6e9; border-radius: 4px; font-family: inherit; background: #fdfdfd; box-sizing: border-box; }
input:focus, textarea:focus { border-color: var(--ana-renk); outline: none; background: white; box-shadow: 0 0 5px rgba(0,0,0,0.1); }
label { font-weight: 700; color: var(--ana-renk); font-size: 14px; text-transform: uppercase; }

.btn { padding: 12px 30px; background: var(--vurgu-renk); color: white; text-decoration: none; font-weight: bold; display: inline-block; border: none; cursor: pointer; border-radius: 4px; transition: 0.3s; }
.btn:hover { background-color: #8c0c2e; transform: translateY(-2px); }

/* Slider */
.slider-container { position: relative; width: 100%; height: 600px; overflow: hidden; background: #000; }
.slide { position: absolute; width: 100%; height: 100%; opacity: 0; transition: opacity 1.5s; display: flex; flex-direction: column; justify-content: center; align-items: center; background-size: cover; }
.slide.active { opacity: 1; }
.slide-content { background: rgba(255, 255, 255, 0.9); padding: 40px; border-left: 5px solid var(--vurgu-renk); color: var(--ana-renk); max-width: 800px; box-shadow: 0 10px 40px rgba(0,0,0,0.2); }
.slide h1 { font-size: 50px; margin: 0 0 10px; color: var(--ana-renk); }
.slide p { color: #555; font-size: 20px; }

/* Kartlar */
.kart-tasiyici { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; margin-top: 40px; }
.kart { background-color: var(--beyaz); padding: 40px 30px; width: 300px; border-radius: 8px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); border-top: 5px solid var(--ana-renk); text-align: center; transition: 0.3s; }
.kart:hover { transform: translateY(-10px); border-top-color: var(--vurgu-renk); box-shadow: 0 15px 30px rgba(0,0,0,0.15); }
.emoji { font-size: 50px; margin-bottom: 20px; filter: grayscale(100%); transition: 0.3s; }
.kart:hover .emoji { filter: grayscale(0%); }

/* Haberler Grid */
.haberler-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; margin-top: 30px; }
.haber-karti { background: var(--beyaz); border-radius: 8px; overflow: hidden; box-shadow: 0 5px 15px rgba(0,0,0,0.05); text-align: left; transition: 0.3s; }
.haber-karti:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(0,0,0,0.1); }
.haber-gorsel { height: 220px; background-color: #b2bec3; background-size: cover; background-position: center; position: relative;}
.haber-gorsel::after { content: 'DUYURU'; position: absolute; top: 0; left: 0; background: var(--vurgu-renk); color: white; padding: 5px 10px; font-size: 12px; font-weight: bold; }
.haber-icerik { padding: 25px; }
.haber-tarih { color: var(--vurgu-renk); font-size: 13px; font-weight: 800; opacity: 0.8; }
.haber-baslik { font-size: 20px; font-weight: 800; margin: 10px 0; color: var(--ana-renk); line-height: 1.4; }

/* Animasyonlar */
.gizli-eleman { opacity: 0; transform: translateY(40px); transition: all 1.2s ease-out; }
.sahneye-cik { opacity: 1; transform: translateY(0); }

/* =========================================
   MOBİL UYUMLULUK KODLARI (TELEFONLAR İÇİN)
   ========================================= */
@media screen and (max-width: 850px) {
    /* Sayfanın sağa kaymasını (beyaz boşluğu) engelle */
    html, body {
        overflow-x: hidden !important;
        width: 100%;
        max-width: 100vw;
    }

    /* Üst Menüyü (Navbar) alt alta diz */
    nav {
        flex-direction: column;
        padding: 15px 10px;
        height: auto;
    }

    .logo-alani {
        justify-content: center;
        margin-bottom: 15px;
        text-align: center;
    }

    /* Menü linklerini yan yana sıkıştırma, sar ve ortala */
    .menu-linkleri {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    /* TR/EN Dil Seçeneği Çizgisini Kaldır ve Ortala */
    .menu-linkleri > div:last-child {
        margin-left: 0 !important;
        border-left: none !important;
        padding-left: 0 !important;
        justify-content: center;
        width: 100%;
        margin-top: 5px;
    }

    /* Slider İçeriğini Daralt ve Ortala */
    .slide-content {
        width: 90%;
        padding: 20px;
        text-align: center;
    }

    .slide-content h1 {
        font-size: 28px;
    }

    /* Kartları Alt Alta Diz (Stratejik Güç, Haberler, İşbirlikleri) */
    .kart-tasiyici, .haberler-grid, #isbirlikleri > div {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .kart {
        width: 100%;
        max-width: 350px;
    }

    .hero-header {
        padding: 60px 20px;
    }
    
    .hero-header h1 {
        font-size: 30px;
    }
}