:root {
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --accent: #d4af37;
    --accent-hover: #fcd34d;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255,255,255,0.05);
    --glass-border: rgba(255,255,255,0.08);
    --nav-scrolled-bg: rgba(2,6,23,0.9);
    --nav-mobile-bg: rgba(2,6,23,0.98);
    --project-overlay-bg: rgba(2,6,23,0.95);
    --shadow: rgba(0,0,0,0.3);
    --transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
}
[data-theme="light"] {
    --bg-dark:#f1f5f9;--bg-darker:#ffffff;--accent:#b4850d;--accent-hover:#d4af37;
    --text-main:#0f172a;--text-muted:#475569;--glass-bg:rgba(255,255,255,0.75);
    --glass-border:rgba(0,0,0,0.08);--nav-scrolled-bg:rgba(255,255,255,0.92);
    --nav-mobile-bg:rgba(255,255,255,0.98);--project-overlay-bg:rgba(15,23,42,0.85);
    --shadow:rgba(0,0,0,0.1);
}
/* Light mode: hero & navbar always light text on dark bg */
[data-theme="light"] .navbar:not(.scrolled) .logo{color:#f8fafc}
[data-theme="light"] .navbar:not(.scrolled) .logo span{color:#d4af37}
[data-theme="light"] .navbar:not(.scrolled) .nav-links a{color:#f8fafc}
[data-theme="light"] .navbar:not(.scrolled) .nav-links a:hover{color:#d4af37}
[data-theme="light"] .navbar:not(.scrolled) .hamburger .bar{background:#f8fafc}
[data-theme="light"] .navbar:not(.scrolled) .theme-btn{color:#f8fafc;border-color:rgba(255,255,255,.2)}
[data-theme="light"] .navbar:not(.scrolled) .lang-btn{color:#d4af37;border-color:#d4af37}
[data-theme="light"] .navbar.scrolled .hamburger .bar{background:#0f172a}
[data-theme="light"] .hero-content h1{color:#f8fafc}
[data-theme="light"] .hero-content h1 span{color:#d4af37}
[data-theme="light"] .hero-content p{color:#94a3b8}
[data-theme="light"] .hero-content .btn-primary{color:#fff}
[data-theme="light"] .project-overlay h3{color:#d4af37}
[data-theme="light"] .project-overlay p{color:#e2e8f0}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Outfit',sans-serif;background:var(--bg-darker);color:var(--text-main);line-height:1.6;overflow-x:hidden}
h1,h2,h3,h4{font-weight:700;line-height:1.2}
a{text-decoration:none;color:inherit}
.container{width:90%;max-width:1200px;margin:0 auto}
.section{padding:100px 0}
.section-title{text-align:center;margin-bottom:60px}
.section-title h2{font-size:2.5rem;margin-bottom:10px;text-transform:uppercase;letter-spacing:2px}
.line{width:60px;height:3px;background:var(--accent);margin:0 auto;border-radius:2px}
.btn{display:inline-block;padding:14px 36px;border-radius:30px;font-weight:500;text-transform:uppercase;letter-spacing:1px;transition:var(--transition);cursor:pointer;border:none;font-size:.95rem}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 15px rgba(212,175,55,.2)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-3px);box-shadow:0 10px 25px rgba(212,175,55,.35)}

/* Navbar */
.navbar{position:fixed;top:0;width:100%;padding:25px 0;z-index:1000;transition:var(--transition)}
.navbar.scrolled{background:var(--nav-scrolled-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--glass-border);padding:15px 0;box-shadow:0 2px 20px var(--shadow)}
.nav-container{display:flex;justify-content:space-between;align-items:center}
.logo{font-size:1.6rem;font-weight:700;letter-spacing:2px}
.logo span{color:var(--accent);font-weight:300}
.nav-links{display:flex;gap:30px}
.nav-links a{font-size:.85rem;text-transform:uppercase;letter-spacing:1.5px;transition:var(--transition);position:relative;padding:5px 0}
.nav-links a::after{content:'';position:absolute;width:0;height:2px;bottom:0;left:0;background:var(--accent);transition:var(--transition)}
.nav-links a:hover::after{width:100%}
.nav-links a:hover{color:var(--accent)}
.nav-right{display:flex;align-items:center;gap:15px}
.lang-btn{background:transparent;border:1.5px solid var(--accent);color:var(--accent);padding:5px 12px;border-radius:6px;font-family:inherit;font-size:.8rem;font-weight:600;cursor:pointer;letter-spacing:1px;transition:var(--transition)}
.lang-btn:hover{background:var(--accent);color:var(--bg-darker)}
.theme-btn{background:transparent;border:1.5px solid var(--glass-border);color:var(--text-main);width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.1rem;transition:var(--transition);padding:0}
.theme-btn:hover{border-color:var(--accent);color:var(--accent)}
.hamburger{display:none;cursor:pointer;flex-direction:column;gap:6px;z-index:1001}
.hamburger .bar{width:28px;height:2px;background:var(--text-main);transition:var(--transition);border-radius:2px}

/* Hero */
.hero{height:100vh;display:flex;align-items:center;position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:linear-gradient(rgba(2,6,23,.7),rgba(2,6,23,.92)),url('Assets/Şişli\ Halaskargazi\ Otel\ Restorasyonu/1.png') center/cover no-repeat;z-index:-1;transform:scale(1.05);animation:slowZoom 25s infinite alternate linear}
@keyframes slowZoom{0%{transform:scale(1.05)}100%{transform:scale(1.15)}}
.hero-content{max-width:800px;margin:0 auto;text-align:center;padding-top:80px}
.hero-content h1{font-size:4.2rem;margin-bottom:25px;text-shadow:0 4px 20px rgba(0,0,0,.4)}
.hero-content h1 span{color:var(--accent)}
.hero-content p{font-size:1.15rem;color:var(--text-muted);margin-bottom:45px;max-width:580px;margin-left:auto;margin-right:auto}

/* About */
.about{background:var(--bg-dark)}
.about-content{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.about-text h3{font-size:2rem;margin-bottom:20px;color:var(--accent)}
.about-text p{color:var(--text-muted);margin-bottom:18px;font-size:1.05rem}
.about-text p strong{color:var(--text-main)}
.stats{display:flex;gap:40px;margin-top:40px;border-top:1px solid var(--glass-border);padding-top:35px}
.stat-item h4{font-size:2.8rem;color:var(--accent);margin-bottom:5px;line-height:1}
.stat-item span{font-size:.8rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px}
.about-image{position:relative;height:480px;background:url('Assets/Kartal\ Havacılar\ Şimşek\ Apartmanı/1.png') center/cover;border-radius:20px;display:flex;align-items:flex-end;padding:25px;box-shadow:0 20px 40px var(--shadow)}
.glass-card{background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:14px;padding:22px 25px;width:100%}
.quote{font-style:italic;font-size:1.15rem;display:block;margin-bottom:10px}
.author{color:var(--accent);font-weight:700;text-transform:uppercase;font-size:.85rem;letter-spacing:1px}

/* Services */
.services{background:var(--bg-darker)}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.service-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:20px;padding:40px 30px;transition:var(--transition);position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--accent),transparent);opacity:0;transition:var(--transition)}
.service-card:hover{transform:translateY(-5px);box-shadow:0 20px 40px var(--shadow);border-color:rgba(212,175,55,.2)}
.service-card:hover::before{opacity:1}
.service-icon{font-size:2.5rem;margin-bottom:20px}
.service-card h3{font-size:1.3rem;margin-bottom:15px;color:var(--accent)}
.service-card>p{color:var(--text-muted);font-size:.95rem;margin-bottom:25px;line-height:1.7}
.service-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.service-list li{color:var(--text-muted);font-size:.9rem;padding-left:20px;position:relative}
.service-list li::before{content:'›';position:absolute;left:0;color:var(--accent);font-weight:700;font-size:1.1rem}

/* Projects */
.projects{background:var(--bg-dark)}
.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:35px}
.project-card{position:relative;border-radius:16px;overflow:hidden;height:360px;cursor:pointer;box-shadow:0 10px 30px var(--shadow);transition:var(--transition)}
.project-card:hover{transform:translateY(-6px);box-shadow:0 25px 50px var(--shadow)}
.project-card img{width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.4,0,.2,1)}
.project-overlay{position:absolute;inset:0;background:linear-gradient(to top,var(--project-overlay-bg) 0%,rgba(0,0,0,.1) 40%,transparent 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:28px;opacity:1;transition:var(--transition)}
.project-overlay h3{color:var(--accent);font-size:1.15rem;margin-bottom:4px;transform:translateY(0);transition:all .4s cubic-bezier(.4,0,.2,1)}
.project-overlay p{color:var(--text-main);font-size:.85rem;transform:translateY(0);transition:all .4s cubic-bezier(.4,0,.2,1);transition-delay:.05s;opacity:.7}
.project-card:hover img{transform:scale(1.08)}
.project-card:hover .project-overlay{background:linear-gradient(to top,var(--project-overlay-bg) 0%,rgba(0,0,0,.25) 60%,transparent 100%)}
.project-card:hover .project-overlay p{opacity:1}

/* Why Us */
.why-us{background:var(--bg-dark)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.why-item{text-align:center;padding:35px 20px;border-radius:16px;background:var(--glass-bg);border:1px solid var(--glass-border);transition:var(--transition)}
.why-item:hover{transform:translateY(-5px);box-shadow:0 15px 35px var(--shadow);border-color:rgba(212,175,55,.15)}
.why-icon{font-size:2.2rem;margin-bottom:18px;display:block}
.why-item h4{font-size:1.1rem;margin-bottom:10px;color:var(--accent)}
.why-item p{color:var(--text-muted);font-size:.9rem;line-height:1.6}

/* Back to Top */
.back-to-top{position:fixed;bottom:110px;right:38px;z-index:998;width:44px;height:44px;background:var(--glass-bg);backdrop-filter:blur(10px);border:1px solid var(--glass-border);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:1.2rem;cursor:pointer;transition:var(--transition);opacity:0;visibility:hidden;transform:translateY(10px)}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--accent);color:var(--bg-darker);border-color:var(--accent)}

/* Contact */
.contact{background:var(--bg-darker)}
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:stretch}
.contact-info.glass-panel{display:flex;flex-direction:column}
.contact-info h3{font-size:1.8rem;margin-bottom:15px;color:var(--accent)}
.contact-info>p{color:var(--text-muted);margin-bottom:35px;font-size:1.05rem;line-height:1.7}
.contact-details{display:flex;flex-direction:column;gap:22px}
.info-item{display:flex;align-items:flex-start;gap:18px}
.info-item i{font-style:normal;font-size:1.2rem;width:48px;height:48px;min-width:48px;background:rgba(212,175,55,.1);border-radius:12px;display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.info-item:hover i{background:var(--accent);color:var(--bg-darker);transform:scale(1.05)}
.info-item div{display:flex;flex-direction:column;gap:3px}
.info-item strong{font-size:.85rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-main)}
.info-item span,.phone-link{color:var(--text-muted);font-size:.95rem;transition:var(--transition)}
.phone-link:hover{color:var(--accent)}
.contact-map.glass-panel{padding:12px;min-height:380px}
.contact-map iframe{width:100%;height:100%;min-height:360px}
.glass-panel{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:20px;padding:40px;box-shadow:0 15px 35px var(--shadow)}

/* Footer */
footer{background:var(--bg-darker);padding:50px 0 35px;text-align:center;border-top:1px solid var(--glass-border)}
.footer-logo{font-size:1.6rem;font-weight:700;letter-spacing:2px;margin-bottom:15px}
.footer-logo span{color:var(--accent);font-weight:300}
footer p{color:var(--text-muted);font-size:.9rem}

/* WhatsApp */
.whatsapp-btn{position:fixed;bottom:30px;right:30px;z-index:999;width:60px;height:60px;background:#25D366;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 20px rgba(37,211,102,.4);transition:var(--transition);animation:wpPulse 2s infinite}
.whatsapp-btn:hover{transform:scale(1.1);box-shadow:0 6px 30px rgba(37,211,102,.6)}
@keyframes wpPulse{0%,100%{box-shadow:0 4px 20px rgba(37,211,102,.4)}50%{box-shadow:0 4px 30px rgba(37,211,102,.6),0 0 0 12px rgba(37,211,102,.1)}}

/* Modal */
.modal{display:none;position:fixed;z-index:2000;inset:0;background:rgba(0,0,0,.88);backdrop-filter:blur(8px);align-items:center;justify-content:center;padding:20px;opacity:0;transition:opacity .3s ease}
.modal.show{display:flex;opacity:1}
.modal-content{background:var(--bg-dark);border:1px solid var(--glass-border);border-radius:20px;max-width:600px;width:100%;max-height:85vh;overflow-y:auto;position:relative;box-shadow:0 25px 60px rgba(0,0,0,.5)}
.modal-gallery{position:relative;width:100%;background:#000;border-radius:20px 20px 0 0;overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:200px;max-height:380px}
.modal-gallery img{width:100%;height:auto;max-height:380px;object-fit:contain;display:block}
.gallery-btn{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,.5);color:#fff;border:none;font-size:1.4rem;cursor:pointer;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition);z-index:5;opacity:0}
.modal-gallery:hover .gallery-btn{opacity:1}
.gallery-btn:hover{background:var(--accent);color:var(--bg-darker)}
.gallery-prev{left:12px}
.gallery-next{right:12px}
.gallery-btn.hidden{display:none}
.gallery-dots{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:5}
.gallery-dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:var(--transition);border:none}
.gallery-dot.active{background:var(--accent);transform:scale(1.3)}
.modal-info{padding:25px 30px 30px}
.modal-info h3{font-size:1.5rem;color:var(--accent);margin-bottom:8px}
.modal-location{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:.95rem;margin-bottom:18px}
.modal-location i{font-style:normal}
.modal-gallery img{cursor:zoom-in}
.expand-btn{display:flex;align-items:center;justify-content:center;gap:6px;width:100%;padding:10px;background:rgba(255,255,255,.06);border:none;border-top:1px solid rgba(255,255,255,.08);color:var(--text-muted);font-family:inherit;font-size:.82rem;cursor:pointer;transition:var(--transition);letter-spacing:.5px}
.expand-btn:hover{background:rgba(212,175,55,.1);color:var(--accent)}
.expand-btn svg{width:14px;height:14px;fill:currentColor}
.modal-close{position:absolute;top:12px;right:12px;color:#fff;font-size:1.6rem;cursor:pointer;z-index:10;background:rgba(0,0,0,.5);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;transition:var(--transition);line-height:1}
.modal-close:hover{background:var(--accent);color:var(--bg-darker);transform:scale(1.1)}

/* Lightbox (fullscreen image viewer) */
.lightbox{display:none;position:fixed;z-index:3000;inset:0;background:rgba(0,0,0,.95);align-items:center;justify-content:center;padding:0;opacity:0;transition:opacity .25s ease;cursor:zoom-out}
.lightbox.show{display:flex;opacity:1}
.lightbox img{max-width:90vw;max-height:90vh;object-fit:contain;border-radius:4px;user-select:none;-webkit-user-select:none}
.lightbox-close{position:absolute;top:20px;right:24px;color:#fff;font-size:2rem;cursor:pointer;z-index:3010;background:rgba(255,255,255,.1);border-radius:50%;width:48px;height:48px;display:flex;align-items:center;justify-content:center;transition:var(--transition);line-height:1;border:none}
.lightbox-close:hover{background:var(--accent);color:#000;transform:scale(1.08)}
.lightbox-btn{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.1);color:#fff;border:none;font-size:1.6rem;cursor:pointer;width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition);z-index:3010}
.lightbox-btn:hover{background:var(--accent);color:#000}
.lightbox-prev{left:20px}
.lightbox-next{right:20px}
.lightbox-btn.hidden{display:none}
.lightbox-counter{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.6);font-size:.85rem;letter-spacing:1px;z-index:3010}

/* Animations */
.reveal{opacity:0;transform:translateY(40px);transition:all .8s cubic-bezier(.4,0,.2,1)}
.reveal.active{opacity:1;transform:translateY(0)}

/* Scrollbar */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--bg-darker)}
::-webkit-scrollbar-thumb{background:var(--glass-border);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--accent)}

/* Responsive */
@media(max-width:1024px){
    .about-content{gap:40px}
    .hero-content h1{font-size:3.5rem}
    .services-grid{grid-template-columns:1fr 1fr}
    .why-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:992px){
    .about-content{grid-template-columns:1fr}
    .about-image{height:380px;order:-1}
    .contact-layout{grid-template-columns:1fr}
    .contact-map.glass-panel{min-height:300px}
    .services-grid{grid-template-columns:1fr}
    .why-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
    .hamburger{display:flex}
    .nav-links{position:fixed;top:0;left:0;width:100%;height:100vh;background:var(--nav-mobile-bg);backdrop-filter:blur(15px);flex-direction:column;justify-content:center;align-items:center;gap:30px;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-20px);transition:.4s cubic-bezier(.4,0,.2,1)}
    .nav-links.active{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
    .nav-links a{font-size:1.5rem}
    .hamburger.active .bar:nth-child(1){transform:translateY(8px) rotate(45deg)}
    .hamburger.active .bar:nth-child(2){opacity:0}
    .hamburger.active .bar:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
    .stats{flex-direction:column;gap:25px;text-align:center}
    .hero-content h1{font-size:2.6rem}
    .hero-content p{font-size:1.05rem}
    .section{padding:70px 0}
    .section-title h2{font-size:1.8rem}
    .glass-panel{padding:25px 20px}
    .project-grid{grid-template-columns:1fr;gap:24px;max-width:500px;margin:0 auto}
    .project-card{height:300px}
    .project-overlay{padding:20px 18px}
    .project-overlay h3{font-size:1.05rem}
    .project-overlay p{font-size:.8rem}
    .why-grid{grid-template-columns:1fr 1fr;gap:16px}
    .why-item{padding:24px 14px}
    .why-icon{font-size:1.8rem;margin-bottom:12px}
    .why-item h4{font-size:.95rem}
    .why-item p{font-size:.82rem}
    .whatsapp-btn{bottom:20px;right:20px;width:54px;height:54px}
    .whatsapp-btn svg{width:24px;height:24px}
    .back-to-top{bottom:92px;right:27px;width:40px;height:40px;font-size:1rem}
    .modal-content{max-width:95vw}
    .modal-gallery{max-height:260px}
    .modal-gallery img{max-height:260px}
    .modal-info{padding:20px}
}