:root {
    --blue-dark: #0f4c75; /* Lacivert */
    --blue-mid: #3282b8;  /* Orta Mavi */
    --blue-light: #bbe1fa; /* Açık Mavi */
    --text-dark: #1b262c;
    --text-gray: #52616b;
    --bg-light: #f4f6f8;
    --white: #ffffff;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

h1, h2, h3 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--blue-dark);
}

a { text-decoration: none; transition: 0.3s; }
ul { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 25px; }

/* HEADER */
.site-header {
    background: var(--white);
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo a {
    font-size: 22px;
    font-weight: 800;
    color: var(--blue-dark);
    text-transform: uppercase;
    letter-spacing: -0.5px;
}
.logo span { color: var(--blue-mid); }

.main-nav ul { display: flex; gap: 30px; }
.main-nav a { color: var(--text-dark); font-weight: 500; font-size: 15px; text-transform: uppercase; font-size: 13px; letter-spacing: 1px; }
.main-nav a:hover { color: var(--blue-mid); }

.btn-corporate {
    background: var(--blue-dark);
    color: white;
    padding: 10px 25px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 14px;
}
.btn-corporate:hover { background: var(--blue-mid); }

/* HERO SECTION */
.hero {
    padding: 140px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #eef2f5 100%);
    text-align: center;
}

.hero .tagline {
    color: var(--blue-mid);
    font-weight: 700;
    letter-spacing: 2px;
    font-size: 14px;
    display: block;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 54px;
    line-height: 1.2;
    margin-bottom: 25px;
    color: var(--text-dark);
}
.hero h1 span { color: var(--blue-dark); border-bottom: 3px solid var(--blue-light); }

.hero p {
    font-size: 18px;
    color: var(--text-gray);
    max-width: 700px;
    margin: 0 auto 40px;
}

.hero-buttons { display: flex; justify-content: center; gap: 20px; }

.btn-blue { background: var(--blue-mid); color: white; padding: 15px 35px; border-radius: 4px; font-weight: 600; }
.btn-blue:hover { background: var(--blue-dark); transform: translateY(-2px); }

.btn-outline { border: 2px solid var(--blue-mid); color: var(--blue-mid); padding: 13px 33px; border-radius: 4px; font-weight: 600; }
.btn-outline:hover { background: var(--blue-mid); color: white; }

/* SERVICES */
.services { padding: 100px 0; }
.section-head { text-align: center; margin-bottom: 60px; }
.section-head h2 { font-size: 36px; margin-bottom: 15px; }

.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }

.service-box {
    background: white;
    padding: 40px 30px;
    border: 1px solid #eee;
    transition: 0.3s;
    border-radius: 4px;
}
.service-box:hover { border-color: var(--blue-mid); box-shadow: var(--shadow); }
.service-box .icon { font-size: 40px; margin-bottom: 20px; }
.service-box h3 { font-size: 20px; margin-bottom: 15px; }
.service-box p { color: var(--text-gray); font-size: 15px; }

/* SECTORS */
.sectors { background: var(--blue-dark); color: white; padding: 100px 0; }
.sector-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.sector-text h2 { color: white; font-size: 36px; margin-bottom: 30px; }

.check-list li {
    margin-bottom: 15px;
    font-size: 17px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.sector-img img { width: 100%; border-radius: 4px; box-shadow: 20px 20px 0 rgba(255,255,255,0.1); }

/* GALLERY (RESİMLER TAM VE DİKEY GÖRÜNÜM) */
.gallery-section { 
    padding: 100px 0; 
    background: var(--bg-light); 
}

.section-title { 
    text-align: center; 
    font-size: 36px; 
    margin-bottom: 15px; 
}

.section-subtitle { 
    text-align: center; 
    color: var(--text-gray); 
    margin-bottom: 50px; 
}

.gallery-wrapper { 
    width: 100%;
    overflow-x: auto; /* Sağa sola kaydırma */
    padding-bottom: 30px; /* Scroll çubuğu payı */
    -webkit-overflow-scrolling: touch; /* Mobilde akıcı kayma */
}

.gallery-track { 
    display: flex; 
    gap: 20px; 
    padding: 0 20px; /* Başlangıç boşluğu */
}

.gallery-item {
    /* Dikey Format Ayarları */
    min-width: 320px;   /* Kartın genişliği */
    height: 550px;      /* Kartın yüksekliği (Dikey resimler için artırıldı) */
    
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    
    /* Resim sığdırma ayarları */
    background-color: #e2e8f0; /* Resim yüklenirken veya boşluk kalırsa görünecek renk */
    border: 1px solid #cbd5e1; /* İnce gri çerçeve */
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.gallery-item img { 
    width: 100%; 
    height: 100%; 
    object-fit: contain; /* KRİTİK KOD: Resmi kesmeden kutuya sığdırır */
    display: block;
    transition: transform 0.5s ease;
}

/* Hover Efekti */
.gallery-item:hover img { 
    transform: scale(1.02); 
}

.gallery-item .overlay {
    position: absolute; 
    inset: 0; 
    background: rgba(15, 76, 117, 0.4); /* Daha şeffaf mavi */
    display: flex; 
    align-items: center; 
    justify-content: center; 
    opacity: 0; 
    transition: 0.3s;
}

.gallery-item:hover .overlay { 
    opacity: 1; 
}

.view-btn { 
    background: rgba(0,0,0,0.7);
    color: white; 
    border: 1px solid white; 
    padding: 10px 20px; 
    font-weight: 600; 
    text-transform: uppercase; 
    font-size: 12px; 
    letter-spacing: 1px; 
    border-radius: 4px;
}

/* PRICING */
.pricing { padding: 100px 0; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; align-items: stretch; }

.pricing-card {
    background: white;
    border: 1px solid #eee;
    padding: 40px;
    border-radius: 4px;
    display: flex; flex-direction: column; justify-content: space-between;
}

.pricing-card.featured {
    border: 2px solid var(--blue-mid);
    position: relative;
    background: #fdfdfd;
}
.badge {
    position: absolute; top: 0; left: 0; right: 0;
    background: var(--blue-mid); color: white; text-align: center;
    padding: 5px; font-size: 12px; font-weight: bold; text-transform: uppercase;
}

.pricing-card h3 { font-size: 22px; margin-bottom: 10px; }
.pricing-card .desc { font-size: 14px; color: var(--text-gray); margin-bottom: 20px; font-style: italic; }
.pricing-card .price { font-size: 20px; font-weight: 700; color: var(--blue-dark); margin-bottom: 25px; padding-bottom: 20px; border-bottom: 1px solid #eee; }
.pricing-card ul { margin-bottom: 30px; flex-grow: 1; }
.pricing-card li { margin-bottom: 12px; color: var(--text-dark); font-size: 15px; position: relative; padding-left: 20px; }
.pricing-card li::before { content: "•"; color: var(--blue-mid); position: absolute; left: 0; font-weight: bold; }

/* CTA FINAL */
.final-cta { background: var(--text-dark); color: white; text-align: center; padding: 100px 0; }
.final-cta h2 { color: white; font-size: 38px; margin-bottom: 20px; }
.final-cta p { color: #a0aec0; margin-bottom: 40px; }
.cta-actions { display: flex; justify-content: center; gap: 20px; }
.btn-white { background: white; color: var(--text-dark); padding: 15px 35px; border-radius: 4px; font-weight: 600; }
.btn-transparent { border: 1px solid rgba(255,255,255,0.3); color: white; padding: 15px 35px; border-radius: 4px; font-weight: 600; }

/* FOOTER */
.site-footer { background: #151e24; color: #78858f; padding: 50px 0; font-size: 14px; border-top: 5px solid var(--blue-dark); }
.footer-text { text-align: center; }

/* MOBILE */
.mobile-toggle { display: none; }
@media (max-width: 768px) {
    .main-nav, .header-cta { display: none; }
    .mobile-toggle { display: block; cursor: pointer; }
    .mobile-toggle span { display: block; width: 30px; height: 3px; background: var(--blue-dark); margin: 6px 0; }
    .hero h1 { font-size: 36px; }
    .sector-wrapper { grid-template-columns: 1fr; }
    .cta-actions { flex-direction: column; }
}