/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bcdz-navy: #1e2a5e;
    --bcdz-gold: #d4a574;
    --bcdz-light-gold: #f0e6d2;
    --bcdz-dark-gold: #b8956a;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--gray-700);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top:10px;
  /*  padding: 1rem 0;*/
}

.logo img {
    height: 80px;
    width: auto;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: var(--bcdz-navy);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-700);
    cursor: pointer;
}





/* Hero Section */
.hero {
    background-image: url("back.jpg");
    background-position:center;
    background-size:cover;
/*    background: linear-gradient(135deg, var(--bcdz-navy) 0%, var(--bcdz-dark-gold) 100%);*/
    color: var(--white);
    padding: 300px 0 300px;
    text-align: center;
}
.hero-content {
   background-color:#1e2a5e8f;
   padding:40px;
}
.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content .highlight {
    color: var(--bcdz-gold);
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--bcdz-gold);
    color: var(--bcdz-navy);
}

.btn-primary:hover {
    background: var(--bcdz-dark-gold);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--bcdz-navy);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--bcdz-navy);
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Why Choose Us */
.why-choose-us {
    background: var(--gray-100);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--bcdz-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--bcdz-navy);
}

.feature-card h3 {
    color: var(--bcdz-navy);
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 600;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text h3 {
    color: var(--bcdz-navy);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--gray-600);
}

.mission-vision {
    margin-top: 2rem;
}

.mv-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.mv-label {
    background: var(--bcdz-gold);
    color: var(--bcdz-navy);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-right: 1rem;
}

.about-values {
    background: linear-gradient(135deg, var(--bcdz-light-gold), var(--bcdz-gold));
    padding: 2rem;
    border-radius: 10px;
}

.about-values h4 {
    color: var(--bcdz-navy);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.about-values ul {
    list-style: none;
}

.about-values li {
    color: var(--bcdz-navy);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
}

.about-values li i {
    margin-right: 0.5rem;
    font-size: 0.875rem;
}

/* Products Section */
.products {
    background: var(--gray-100);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-icon {
    width: 60px;
    height: 60px;
    background: var(--bcdz-gold);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.product-icon i {
    font-size: 1.5rem;
    color: var(--bcdz-navy);
}

.product-card h3 {
    color: var(--bcdz-navy);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.product-card p {
    margin-bottom: 1.5rem;
    color: var(--gray-600);
}

.product-card ul {
    list-style: none;
    color: var(--gray-600);
}

.product-card li {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--bcdz-gold);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon i {
    font-size: 1.5rem;
    color: var(--bcdz-navy);
}

.service-card h3 {
    color: var(--bcdz-navy);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.service-card p {
    margin-bottom: 1.5rem;
    color: var(--gray-600);
}

.service-card ul {
    list-style: none;
    color: var(--gray-600);
}

.service-card li {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* Sustainability Section */
.sustainability {
    background: linear-gradient(135deg, var(--bcdz-light-gold), var(--bcdz-gold));
}

.sustainability-content {
    text-align: center;
}

.sustainability-content h2 {
    color: var(--bcdz-navy);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.sustainability-intro {
    color: var(--bcdz-navy);
    font-size: 1.125rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.sustainability-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    text-align: left;
}

.sustainability-card {
    background: rgba(255,255,255,0.8);
    padding: 2rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.sustainability-icon {
    width: 50px;
    height: 50px;
    background: var(--bcdz-navy);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.sustainability-icon i {
    color: var(--bcdz-gold);
    font-size: 1.25rem;
}

.sustainability-card h3 {
    color: var(--bcdz-navy);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.sustainability-card p {
    color: var(--gray-700);
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3 {
    color: var(--bcdz-navy);
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.contact-item i {
    color: var(--bcdz-gold);
    margin-right: 1rem;
    width: 20px;
}

.contact-form h3 {
    color: var(--bcdz-navy);
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 12px 16px;
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--bcdz-gold);
}

.contact-form button {
    background: var(--bcdz-navy);
    color: var(--white);
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.contact-form button:hover {
    background: var(--bcdz-dark-gold);
}

/* Footer */
.footer {
    background: var(--bcdz-navy);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    height: 48px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer p {
    opacity: 0.8;
}

.copyright {
    font-size: 0.875rem;
    opacity: 0.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }
    
    .nav.active {
        display: flex;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .sustainability-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .feature-card,
    .product-card,
    .service-card {
        padding: 1.5rem;
    }
    
    .sustainability-card {
        padding: 1.5rem;
    }
}
/* ========== Slider / Çoklu hero arkaplan ========== */
/* Aktif yapmak için <section class="hero slider-enabled"> kullan. */
.hero.slider-enabled {
    position: relative;
    /* Orijinal `.hero` padding ve renkleri aynen kalsın */
    background-image: none !important; /* eski tek-resim override */
    overflow: hidden;
}

    /* slides container tüm section'ı kaplasın */
    .hero.slider-enabled .slides {
        position: absolute;
        inset: 0; /* top:0; right:0; bottom:0; left:0; */
        z-index: 0;
        pointer-events: none; /* slider tıklanmasını engelle (içerik üstte) */
    }

    /* her slide arka plan resmi */
    .hero.slider-enabled .slide {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        opacity: 0;
        transition: opacity 1s ease-in-out;
        will-change: opacity;
    }

        /* ilk görünür slide */
        .hero.slider-enabled .slide.is-active {
            opacity: 1;
        }

    /* içerik üstte kalsın */
    .hero.slider-enabled .hero-content,
    .hero.slider-enabled .container {
        position: relative;
        z-index: 2;
    }

/* Responsive: küçük ekranlarda görünüme zarar verme */
@media (max-width: 480px) {
    .hero.slider-enabled .slide {
        background-position: center center;
    }
}

/* ========== Section arka plan resmi ekleme yardımcı class'ları ========== */
/* Kullanım: <section class="about section-with-image overlay-light" style="background-image:url('Content/about-bg.jpg')"> */

.section-with-image {
    position: relative;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    /* eski section arkaplan rengini inline style ile override edebilirsin */
}

    /* overlay (okunabilirlik için) - varsayılan: açık/aydınlık beyaz katman */
    .section-with-image::before {
        content: "";
        position: absolute;
        inset: 0;
        z-index: 1;
        pointer-events: none;
        background: rgba(255,255,255,0.75); /* varsayılan açık katman */
    }

    /* koyu overlay istiyorsan bu class'ı ekle: overlay-dark */
    .section-with-image.overlay-dark::before {
        background: rgba(0,0,0,0.45);
    }

    /* hafif (daha transparan) overlay istersen */
    .section-with-image.overlay-strong::before {
        background: rgba(255,255,255,0.88);
    }

    /* içerik overlay'in üstünde kalsın */
    .section-with-image .container {
        position: relative;
        z-index: 2;
    }

    /* Eğer overlay açıkken koyu renkli metin istersen (örn contact) ekle `dark-text` class'ı */
    .section-with-image.dark-text,
    .section-with-image.dark-text .section-header,
    .section-with-image.dark-text p,
    .section-with-image.dark-text h2,
    .section-with-image.dark-text h3 {
        color: var(--gray-800);
    }