/* BYGEN TEKNOLOJİ - KURUMSAL TEMA (MAVİ/TECH) */

:root {
    --primary-color: #FFA726;   /* Açık Turuncu */
    --secondary-color: #0f172a; /* Çok Koyu Lacivert */
    --accent-color: #E67E22;    /* Koyu Turuncu */
    --text-dark: #1e293b;       /* Koyu Metin */
    --text-light: #f8fafc;      /* Açık Metin */
    --bg-light: #f1f5f9;        /* Sayfa Arkaplan */
}

body {
    font-family: 'Outfit', sans-serif;
    color: var(--text-dark);
    background-color: #fff;
    line-height: 1.7;
    overflow-x: hidden;
}

a { text-decoration: none; transition: 0.3s ease; }

/* --- TOP BAR (En Üst İnce Şerit) --- */
.top-bar {
    background-color: #020617; /* Siyahımsı */
    color: #94a3b8;
    padding: 8px 0;
    font-size: 0.85rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.top-bar a { color: #94a3b8; margin-right: 15px; }
.top-bar a:hover { color: var(--primary-color); }
.top-bar i { margin-right: 5px; color: var(--primary-color); }

/* --- MAIN HEADER (Logo & Menü) --- */
.main-header {
    background-color: var(--secondary-color);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* Logo Alanı */
.logo-img { max-height: 60px; }
.text-logo {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
    letter-spacing: -1px;
}
.text-logo span { color: var(--primary-color); }
.text-logo small {
    display: block;
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 2px;
    color: #94a3b8;
    margin-top: -5px;
}

/* Navigasyon Linkleri */
.navbar-nav .nav-link {
    color: rgba(255,255,255,0.85) !important;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 15px 18px !important;
    position: relative;
}
.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
    color: var(--primary-color) !important;
}
/* Link Alt Çizgi Efekti */
.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: 0.3s;
    transform: translateX(-50%);
}
.navbar-nav .nav-link:hover::after { width: 30px; }

/* Dropdown Menü */
.dropdown-menu {
    background: #1e293b;
    border: none;
    border-top: 3px solid var(--primary-color);
    border-radius: 0 0 8px 8px;
    padding: 0;
    margin-top: 0;
}
.dropdown-item {
    color: #cbd5e1;
    padding: 12px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 0.9rem;
}
.dropdown-item:hover {
    background: rgba(255,255,255,0.05);
    color: var(--primary-color);
    padding-left: 25px; /* Kayma efekti */
}

/* Özel Buton (Teklif Al) */
.nav-link.btn-contact {
    background: var(--primary-color);
    color: #0f172a !important;
    padding: 10px 25px !important;
    border-radius: 50px;
    font-weight: 800;
    box-shadow: 0 0 15px rgba(0, 210, 255, 0.3);
}
.nav-link.btn-contact:hover {
    background: #fff;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}
.nav-link.btn-contact::after { display: none; } /* Alt çizgiyi kaldır */

/* --- FOOTER --- */
footer {
    background-color: #0b1120;
    color: #94a3b8;
    border-top: 3px solid var(--primary-color);
}
.footer-col h3 {
    color: #fff;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}
.footer-menu li a:hover { color: var(--primary-color); }
.social-icons a {
    background: #1e293b;
    color: #fff;
}
.social-icons a:hover {
    background: var(--primary-color);
    color: #000;
}
/* --- FOOTER TASARIMI (Old Site Style - Modernized) --- */
.footer-area {
    background-color: #0b1120; /* Koyu Zemin */
    color: #94a3b8; /* Gri Yazı */
    padding-top: 60px;
    font-size: 0.95rem;
    position: relative;
    border-top: 4px solid var(--primary-color); /* Üstte Mavi Çizgi */
}

/* Başlıklar */
.footer-title {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color); /* Başlık altı mavi çizgi */
}

/* Açıklama Metni */
.footer-desc {
    line-height: 1.6;
    margin-bottom: 20px;
}

/* Sosyal İkonlar */
.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: #1e293b;
    color: #fff;
    border-radius: 4px;
    margin-right: 8px;
    transition: all 0.3s ease;
}
.footer-social a:hover {
    background: var(--primary-color);
    color: #000;
    transform: translateY(-3px);
}

/* Footer Linkleri (Hızlı Menü & Hizmetler) */
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li {
    margin-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.05); /* Hafif çizgi */
    padding-bottom: 8px;
}
.footer-links li:last-child { border-bottom: none; }
.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: 0.3s;
    display: flex;
    align-items: center;
}
.footer-links a i {
    margin-right: 8px;
    font-size: 0.8rem;
    color: var(--primary-color);
}
.footer-links a:hover {
    color: #fff;
    padding-left: 5px; /* Kayma efekti */
}

/* İletişim Bölümü */
.contact-row .icon {
    width: 35px;
    height: 35px;
    background: rgba(0, 210, 255, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}
.contact-row .text {
    font-size: 0.95rem;
    color: #cbd5e1;
    display: flex;
    align-items: center;
}
.contact-row .text a {
    color: #cbd5e1;
    text-decoration: none;
}
.contact-row .text a:hover {
    color: var(--primary-color);
}

/* Alt Bar (Copyright) */
.footer-bottom {
    background-color: #020617; /* Daha koyu siyah */
    padding: 20px 0;
    margin-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.05);
    font-size: 0.85rem;
}
/* --- ANA SAYFA ÖZEL TASARIMLAR --- */

/* 1. Slider & Hero */
.slider-img {
    height: 600px; /* Slider yüksekliği */
    object-fit: cover;
}
.slider-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5); /* Resim üzerine siyah perde */
}
.default-hero {
    height: 500px;
    background: linear-gradient(135deg, #0f172a 0%, #1e40af 100%);
}
.slider-title {
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    letter-spacing: 2px;
}

/* 2. Hakkımızda (About) */
.about-image-wrapper { position: relative; }
.about-img { width: 100%; object-fit: cover; }
.experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    min-width: 150px;
    border: 4px solid #fff;
    z-index: 2;
}

/* 3. Sayaçlar (Stats) */
.stat-item {
    transition: transform 0.3s ease;
    background: rgba(255,255,255,0.05); /* Şeffaf beyaz */
}
.stat-item:hover {
    transform: translateY(-10px);
    background: rgba(255,255,255,0.1);
    border-color: var(--primary-color) !important;
}
.letter-spacing-2 { letter-spacing: 2px; }

/* 4. Hizmet Kartları */
.service-card {
    transition: all 0.3s ease;
    border-top: 4px solid transparent !important; /* Üst çizgi için hazırlık */
}
.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1) !important;
    border-top-color: var(--primary-color) !important; /* Üstü mavi yap */
}
.icon-box {
    transition: 0.3s;
}
.service-card:hover .icon-box {
    background-color: var(--primary-color) !important;
    color: #fff !important;
}

/* 5. CTA (Teklif Al) */
.section-cta {
    background: linear-gradient(90deg, var(--primary-color) 0%, #3b82f6 100%);
}

/* Mobilde Slider Boyutu */
@media (max-width: 768px) {
    .slider-img { height: 400px; }
    .display-4 { font-size: 2.5rem; }
    .experience-badge { right: 0; bottom: 0; }
}