/* ========== CRITICAL CSS - Performance Optimized ========== */
*{margin:0;padding:0;box-sizing:border-box}

:root{
    --primary:#ff6b35;
    --primary-dark:#e55a2b;
    --secondary:#2c3e50;
    --secondary-dark:#1a252f;
    --accent:#f7931e;
    --text:#333;
    --light:#f8f9fa;
    --white:#fff;
    --shadow:0 10px 30px rgba(0,0,0,.1);
    --shadow-lg:0 20px 60px rgba(0,0,0,.2);
    --transition:.3s cubic-bezier(.4,0,.2,1);
}

body{
    font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;
    line-height:1.6;
    color:var(--text);
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideInRight{from{opacity:0;transform:translateX(-30px)}to{opacity:1;transform:translateX(0)}}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes shimmer{0%{background-position:-1000px 0}100%{background-position:1000px 0}}
@keyframes rotate{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes gradient{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}

/* Intersection Observer için */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ========== HEADER ========== */
header{
    background:linear-gradient(135deg,var(--secondary) 0%,var(--secondary-dark) 100%);
    color:var(--white);
    padding:1.5rem 0;
    position:sticky;
    top:0;
    z-index:1000;
    box-shadow:var(--shadow);
    backdrop-filter:blur(10px);
    transition:all var(--transition);
    will-change:transform;
}

header.scrolled{
    padding:1rem 0;
    background:rgba(44,62,80,.95);
    box-shadow:0 5px 20px rgba(0,0,0,.2);
}

nav{
    max-width:1400px;
    margin:0 auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:0 2rem;
}

.logo{
    font-size:1.8rem;
    font-weight:700;
    background:linear-gradient(45deg,var(--primary),var(--accent));
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
    animation:pulse 2s infinite;
    cursor:pointer;
}

.nav-links{
    display:flex;
    gap:2.5rem;
    list-style:none;
    align-items:center;
}

.nav-links a{
    color:var(--white);
    text-decoration:none;
    transition:all var(--transition);
    position:relative;
    padding:.5rem 0;
    font-weight:500;
}

.nav-links a::after{
    content:'';
    position:absolute;
    bottom:0;
    left:0;
    width:0;
    height:2px;
    background:var(--primary);
    transition:width var(--transition);
}

.nav-links a:hover::after{width:100%}
.nav-links a:hover{color:var(--primary);transform:translateY(-2px)}

/* ========== HERO SECTION ========== */
.hero{
    background:linear-gradient(135deg,var(--secondary) 0%,var(--secondary-dark) 100%);
    min-height:600px;
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    color:var(--white);
    position:relative;
    overflow:hidden;
}

.hero::before{
    content:'';
    position:absolute;
    width:500px;
    height:500px;
    background:radial-gradient(circle,var(--primary) 0%,transparent 70%);
    opacity:.1;
    top:-100px;
    right:-100px;
    animation:float 6s ease-in-out infinite;
}

.hero::after{
    content:'';
    position:absolute;
    width:400px;
    height:400px;
    background:radial-gradient(circle,var(--accent) 0%,transparent 70%);
    opacity:.1;
    bottom:-100px;
    left:-100px;
    animation:float 8s ease-in-out infinite;
}

.hero-content{
    max-width:800px;
    padding:2rem;
    position:relative;
    z-index:1;
    animation:fadeInUp 1s ease;
}

.hero-content h1{
    font-size:3.5rem;
    margin-bottom:1.5rem;
    text-shadow:2px 2px 10px rgba(0,0,0,.3);
    font-weight:700;
    line-height:1.2;
}

.hero-content p{
    font-size:1.4rem;
    margin-bottom:2.5rem;
    opacity:.95;
}

/* ========== BUTTONS ========== */
.btn{
    display:inline-block;
    padding:1rem 2.5rem;
    background:linear-gradient(45deg,var(--primary),var(--accent));
    color:var(--white);
    text-decoration:none;
    border-radius:50px;
    font-weight:700;
    transition:all var(--transition);
    border:none;
    cursor:pointer;
    box-shadow:0 5px 15px rgba(255,107,53,.3);
    position:relative;
    overflow:hidden;
}

.btn::before{
    content:'';
    position:absolute;
    top:0;
    left:-100%;
    width:100%;
    height:100%;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);
    transition:left .5s;
}

.btn:hover::before{left:100%}
.btn:hover{
    transform:translateY(-3px);
    box-shadow:0 10px 25px rgba(255,107,53,.4);
}
.btn:active{transform:translateY(-1px)}

/* ========== TRUST BADGES ========== */
.trust-badges{
    background:linear-gradient(180deg,var(--white) 0%,var(--light) 100%);
    padding:5rem 2rem;
    position:relative;
}

.container{max-width:1400px;margin:0 auto}

.badges-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:2.5rem;
    margin-top:3rem;
}

.badge-card{
    background:var(--white);
    padding:2.5rem;
    border-radius:20px;
    text-align:center;
    box-shadow:var(--shadow);
    transition:all .4s cubic-bezier(.4,0,.2,1);
    position:relative;
    overflow:hidden;
    border:1px solid rgba(0,0,0,.05);
}

.badge-card::before{
    content:'';
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:5px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
    transform:scaleX(0);
    transition:transform .4s ease;
}

.badge-card:hover::before{transform:scaleX(1)}
.badge-card:hover{
    transform:translateY(-10px);
    box-shadow:var(--shadow-lg);
}

.badge-icon{
    font-size:4rem;
    margin-bottom:1.5rem;
    animation:float 3s ease-in-out infinite;
}

.badge-card h3{
    color:var(--secondary);
    margin-bottom:1rem;
    font-size:1.3rem;
}

.badge-card p{color:#666;line-height:1.8}

/* ========== SECTION ========== */
.section{padding:5rem 2rem;position:relative}

.section-title{
    text-align:center;
    font-size:2.8rem;
    color:var(--secondary);
    margin-bottom:3.5rem;
    position:relative;
    display:inline-block;
    width:100%;
}

.section-title::after{
    content:'';
    position:absolute;
    bottom:-15px;
    left:50%;
    transform:translateX(-50%);
    width:80px;
    height:4px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
    border-radius:2px;
}

/* ========== VEHICLES/PRODUCTS ========== */
.vehicles-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
    gap:2.5rem;
}

.vehicle-card{
    background:var(--white);
    border-radius:20px;
    overflow:hidden;
    box-shadow:var(--shadow);
    transition:all .4s cubic-bezier(.4,0,.2,1);
    cursor:pointer;
    border:1px solid rgba(0,0,0,.05);
    will-change:transform;
}

.vehicle-card:hover{
    transform:translateY(-10px) scale(1.02);
    box-shadow:var(--shadow-lg);
}

.vehicle-image{
    width:100%;
    height:250px;
    position:relative;
    overflow:hidden;
    background:var(--light);
}

.vehicle-image img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .5s ease;
}

.vehicle-card:hover .vehicle-image img{transform:scale(1.1)}

.vehicle-info{padding:2rem}
.vehicle-info h3{
    color:var(--secondary);
    margin-bottom:1rem;
    font-size:1.2rem;
}

.vehicle-price{
    color:var(--primary);
    font-size:1.8rem;
    font-weight:700;
    margin:1rem 0;
    background:linear-gradient(45deg,var(--primary),var(--accent));
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
}

.vehicle-details{
    display:flex;
    justify-content:space-between;
    margin:1rem 0;
    font-size:.95rem;
    color:#666;
    flex-wrap:wrap;
    gap:.5rem;
}

.vehicle-details span{
    background:var(--light);
    padding:.4rem .8rem;
    border-radius:20px;
    font-size:.85rem;
}

/* ========== SERVICES ========== */
.services{
    background:linear-gradient(135deg,var(--secondary) 0%,var(--secondary-dark) 100%);
    color:var(--white);
}

.services .section-title{color:var(--white)}
.services .section-title::after{background:var(--white)}

.services-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
    gap:2.5rem;
}

.service-card{
    background:rgba(255,255,255,.1);
    backdrop-filter:blur(10px);
    padding:2.5rem;
    border-radius:20px;
    box-shadow:0 8px 32px rgba(0,0,0,.1);
    transition:all .4s ease;
    border:1px solid rgba(255,255,255,.1);
}

.service-card:hover{
    transform:translateY(-10px);
    background:rgba(255,255,255,.15);
    box-shadow:0 15px 40px rgba(0,0,0,.2);
}

.service-card h3{
    color:var(--white);
    margin-bottom:1rem;
    font-size:1.3rem;
}

.service-card p{opacity:.9;line-height:1.8}

/* ========== TESTIMONIALS ========== */
.testimonials{
    background:var(--secondary);
    color:var(--white);
    padding:5rem 2rem;
}

.testimonial-card{
    background:rgba(255,255,255,.1);
    backdrop-filter:blur(10px);
    padding:2.5rem;
    border-radius:20px;
    margin:1.5rem 0;
    border:1px solid rgba(255,255,255,.2);
    transition:all var(--transition);
}

.testimonial-card:hover{
    background:rgba(255,255,255,.15);
    transform:translateX(10px);
}

.testimonial-card p{
    font-size:1.1rem;
    line-height:1.8;
    font-style:italic;
}

.testimonial-author{
    margin-top:1.5rem;
    font-weight:700;
    color:var(--primary);
    font-size:1.05rem;
}

/* ========== CONTACT ========== */
.contact{background:var(--light)}

.contact-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
    gap:2.5rem;
}

.contact-info{
    background:var(--white);
    padding:2.5rem;
    border-radius:20px;
    box-shadow:var(--shadow);
    transition:all var(--transition);
}

.contact-info:hover{
    transform:translateY(-5px);
    box-shadow:var(--shadow-lg);
}

.contact-info h3{
    color:var(--secondary);
    margin-bottom:1.5rem;
    font-size:1.4rem;
}

.contact-item{
    margin:1.2rem 0;
    display:flex;
    align-items:center;
    gap:1rem;
    padding:.8rem;
    border-radius:10px;
    transition:all var(--transition);
}

.contact-item:hover{
    background:var(--light);
    transform:translateX(5px);
}

.contact-item span:first-child{font-size:1.5rem}

.whatsapp-btn{
    background:linear-gradient(45deg,#25D366,#128C7E);
    color:var(--white);
    padding:1rem 2rem;
    border-radius:50px;
    text-decoration:none;
    display:inline-flex;
    align-items:center;
    gap:.8rem;
    font-weight:700;
    transition:all var(--transition);
    box-shadow:0 5px 15px rgba(37,211,102,.3);
}

.whatsapp-btn:hover{
    transform:translateY(-3px) scale(1.05);
    box-shadow:0 10px 25px rgba(37,211,102,.4);
}

/* ========== FOOTER ========== */
footer{
    background:linear-gradient(135deg,var(--secondary-dark) 0%,#0f1419 100%);
    color:var(--white);
    text-align:center;
    padding:3rem 2rem;
}

footer p{margin:.5rem 0;opacity:.9}

/* ========== LOADING SKELETON ========== */
.skeleton{
    background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);
    background-size:200% 100%;
    animation:shimmer 1.5s infinite;
    border-radius:10px;
}

.skeleton-card{
    height:400px;
    margin:1rem 0;
}

/* ========== LAZY LOADING ========== */
img[loading="lazy"]{
    opacity:0;
    transition:opacity .3s;
}

img[loading="lazy"].loaded{
    opacity:1;
}

/* ========== RESPONSIVE ========== */
@media (max-width:768px){
    .hero{height:400px}
    .hero-content h1{font-size:2rem}
    .hero-content p{font-size:1.1rem}
    .nav-links{display:none}
    .badges-grid,.vehicles-grid,.services-grid,.contact-grid{
        grid-template-columns:1fr;
    }
    .section{padding:3rem 1rem}
    .section-title{font-size:2rem}
}

/* ========== PERFORMANCE HINTS ========== */
*{
    -webkit-tap-highlight-color:transparent;
}

a,button,.btn{
    touch-action:manipulation;
}

img{
    content-visibility:auto;
}