:root {
    --primary-color: #003366;
    --secondary-color: #f2f2f2;
    --accent-color: #4da6ff;
    --text-color: #333;
    --background-color: #ffffff;
    --text-color-light: #fff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --font-primary: 'Playfair Display', serif;
    --font-secondary: 'Poppins', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
}

body.menu-open {
    overflow: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==================================
   HEADER & NAVIGATION
================================== */
header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, height 0.3s ease;
    height: 90px;
}

header.scrolled {
    background-color: rgba(0, 51, 102, 0.9);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    height: 70px;
}

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

.logo {
    display: flex;
    align-items: center;
    z-index: 1001; 
}

#logo-img {
    height: 70px;
    transition: height 0.3s ease;
}

header.scrolled #logo-img {
    height: 50px;
}

.desktop-nav-links a {
    color: var(--text-color-light);
    text-decoration: none;
    margin: 0 1rem;
    font-weight: 600;
    position: relative;
    transition: color 0.3s;
}

.desktop-nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease-in-out;
}

.desktop-nav-links a:hover {
    color: var(--accent-color);
}

.desktop-nav-links a:hover::after {
    width: 100%;
}

.hamburger, .mobile-nav-panel, .menu-overlay {
    display: none;
}


/* ==================================
   DİĞER TÜM BÖLÜMLER (DEĞİŞİKLİK YOK)
================================== */

.hero { height: 100vh; position: relative; display: flex; align-items: center; justify-content: center; text-align: center; overflow: hidden; }
#bg-video { position: absolute; top: 50%; left: 50%; min-width: 100%; min-height: 100%; transform: translate(-50%, -50%); z-index: -1; object-fit: cover; }
.hero::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.5); z-index: 0; }
.hero-content { position: relative; z-index: 1; color: var(--text-color-light); max-width: 800px; padding: 0 2rem; }
.main-headline { font-family: var(--font-primary); font-size: 5rem; font-weight: 800; line-height: 1.1; text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7); margin-bottom: 1rem; }
.sub-headline { font-size: 1.5rem; font-weight: 400; margin-bottom: 2rem; text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5); }
.scroll-down-arrow { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); color: var(--text-color-light); font-size: 2rem; z-index: 1; animation: bounce 2s infinite; }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); } 40% { transform: translate(-50%, -30px); } 60% { transform: translate(-50%, -15px); } }
.content-section { padding: 6rem 0; }
.section-title { font-family: var(--font-primary); font-size: 3rem; font-weight: 800; margin-bottom: 3rem; line-height: 1.2; }
.text-center { text-align: center; }
.reveal-on-scroll { opacity: 0; transform: translateY(50px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
.reveal-on-scroll.visible { opacity: 1; transform: translateY(0); }
#about { background-color: var(--background-color); }
#about .about-text p { max-width: 800px; margin: 0 auto 2rem auto; font-size: 1.1rem; line-height: 1.8; }
.about-image-container { margin-top: 3rem; text-align: center; }
.about-image-container img { max-width: 100%; height: auto; border-radius: 15px; box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2); }
#services { background-color: var(--secondary-color); }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2.5rem; margin-top: 3rem; }
.service-card { background: var(--background-color); padding: 2.5rem 2rem; text-align: center; border-radius: 10px; box-shadow: 0 10px 30px var(--shadow-color); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.service-card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px var(--shadow-color); }
.service-icon { font-size: 3rem; color: var(--accent-color); margin-bottom: 1.5rem; }
.service-card h3 { font-family: var(--font-secondary); font-size: 1.5rem; font-weight: 600; margin-bottom: 1rem; }
#gallery { padding-bottom: 8rem; }
.project-carousel { width: 100%; height: 350px; }
.swiper-slide { background-position: center; background-size: cover; border-radius: 15px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.15); }
.swiper-slide img { display: block; width: 100%; height: 100%; object-fit: cover; }
.swiper-button-next, .swiper-button-prev { color: var(--accent-color); top: 50%; transform: translateY(-50%); background-color: rgba(255, 255, 255, 0.8); border-radius: 50%; width: 44px; height: 44px; transition: background-color 0.3s, color 0.3s; }
.swiper-button-next:hover, .swiper-button-prev:hover { background-color: var(--accent-color); color: var(--text-color-light); }
.swiper-button-next::after, .swiper-button-prev::after { font-size: 20px; font-weight: 900; }
.swiper-pagination { bottom: -40px !important; }
.swiper-pagination-bullet { background-color: var(--accent-color); width: 10px; height: 10px; opacity: 0.7; }
.swiper-pagination-bullet-active { background-color: var(--primary-color); opacity: 1; transform: scale(1.2); }
#contact { background-color: var(--secondary-color); }
.map-container { margin-bottom: 4rem; border-radius: 15px; overflow: hidden; box-shadow: 0 15px 40px rgba(0,0,0,0.15); }
.contact-info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2.5rem; }
.contact-card { background: var(--background-color); padding: 3rem 2rem; text-align: center; border-radius: 10px; box-shadow: 0 10px 30px var(--shadow-color); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.contact-card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px var(--shadow-color); }
.contact-icon { font-size: 3rem; color: var(--accent-color); margin-bottom: 1.5rem; }
.contact-card h3 { font-size: 1.5rem; font-weight: 600; margin-bottom: 1rem; }
.contact-card p, .contact-card a { font-size: 1.1rem; color: var(--text-color); text-decoration: none; line-height: 1.7; }
.contact-card a { display: block; transition: color 0.3s; }
.contact-card a:hover { color: var(--accent-color); }
footer { background-color: var(--primary-color); color: var(--secondary-color); text-align: center; padding: 2rem 0; font-size: 0.9rem; }
.floating-call-btn { display: none; }


/* ==================================
   MOBİL GÖRÜNÜM (768px ve altı)
================================== */
@media (max-width: 768px) {

    .desktop-nav-links {
        display: none;
    }

    .hamburger, .mobile-nav-panel, .menu-overlay {
        display: block; 
    }

    .hamburger {
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
        z-index: 1002;
    }
    
    .hamburger .bar {
        display: block;
        width: 25px;
        height: 3px;
        margin: 5px auto;
        background-color: var(--text-color-light);
        transition: all 0.3s ease-in-out;
    }

    /* YENİDEN EKLENDİ: Hamburger -> X Animasyonu */
    .hamburger.active .bar:nth-child(2) { 
        opacity: 0; 
    }
    .hamburger.active .bar:nth-child(1) { 
        transform: translateY(8px) rotate(45deg); 
    }
    .hamburger.active .bar:nth-child(3) { 
        transform: translateY(-8px) rotate(-45deg); 
    }
    
    .menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.6);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.4s ease, visibility 0s linear 0.4s;
    }

    .menu-overlay.active {
        opacity: 1;
        visibility: visible;
        transition: opacity 0.4s ease;
    }

    .mobile-nav-panel {
        display: flex; 
        flex-direction: column;
        justify-content: space-between;
        align-items: center;
        position: fixed;
        top: 0;
        right: 0;
        height: 100%;
        width: 85%;
        max-width: 320px;
        background-color: var(--primary-color);
        z-index: 1001;
        padding: 4rem 1rem;
        transform: translateX(100%);
        transition: transform 0.5s cubic-bezier(0.77, 0, 0.175, 1);
    }

    .mobile-nav-panel.active {
        transform: translateX(0);
        box-shadow: -5px 0 25px rgba(0,0,0,0.25);
    }

    .mobile-menu-logo {
        height: 60px;
    }

    .main-menu-links {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .main-menu-links a {
        font-size: 1.5rem;
        margin: 1.2rem 0;
        color: var(--text-color-light);
        text-decoration: none;
    }

    .dealership-link {
        display: inline-block;
        background-color: var(--accent-color);
        color: var(--text-color-light) !important;
        padding: 1rem 1.5rem;
        border-radius: 30px;
        font-weight: 600;
        text-decoration: none;
        transition: background-color 0.3s, transform 0.3s;
    }

    .dealership-link:hover {
        background-color: #3399ff;
        transform: scale(1.05);
    }

    /* Diğer Mobil Ayarlamalar */
    .main-headline { font-size: 3.5rem; }
    .sub-headline { font-size: 1.2rem; }
    .section-title { font-size: 2.5rem; }
    .content-section { padding: 4rem 0; }
    .project-carousel { height: 250px; }
    .swiper-button-next, .swiper-button-prev { display: none; }

    .floating-call-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        position: fixed;
        bottom: 20px;
        left: 20px;
        width: 60px;
        height: 60px;
        background-color: var(--accent-color);
        color: var(--text-color-light);
        border-radius: 50%;
        font-size: 1.5rem;
        text-decoration: none;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
        z-index: 998;
        animation: pulse 2s infinite;
    }

    @keyframes pulse {
        0% { transform: scale(1); }
        50% { transform: scale(1.1); }
        100% { transform: scale(1); }
    }
}