/* BURSA TAS DUVAR - PROFESYONEL KURUMSAL STIL */
:root {
    --primary: #2D5A4A;
    --primary-dark: #1E3D32;
    --primary-light: #3D7A64;
    --secondary: #1C2833;
    --accent: #D4AF37;
    --text-dark: #1C2833;
    --text-light: #718096;
    --bg-light: #F7FAFC;
    --bg-white: #FFFFFF;
    --border: #E2E8F0;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.15);
    --radius: 16px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', 'Segoe UI', sans-serif; line-height: 1.7; color: var(--text-dark); background: var(--bg-white); overflow-x: hidden; font-size: 16px; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: all 0.3s; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* TOP BAR */
.top-bar { background: var(--secondary); color: white; padding: 10px 0; font-size: 14px; }
.top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.top-bar-left { display: flex; align-items: center; gap: 20px; }
.top-bar a { color: white; display: flex; align-items: center; gap: 6px; }
.top-bar a:hover { color: var(--accent); }

/* HEADER */
.header { background: white; box-shadow: var(--shadow); position: sticky; top: 0; z-index: 1000; padding: 12px 0; }
.header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 14px; }
.site-logo-img { height: 50px; max-width: 200px; width: auto; object-fit: contain; }
.logo-icon { width: 56px; height: 56px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: white; font-size: 24px; }
.logo-text h1 { font-size: 22px; color: var(--primary-dark); font-weight: 700; }
.logo-text p { font-size: 12px; color: var(--text-light); margin: 0; text-transform: uppercase; letter-spacing: 1px; }
.nav-menu { display: flex; gap: 8px; list-style: none; }
.nav-menu a { color: var(--text-dark); font-weight: 600; padding: 10px 16px; position: relative; border-radius: 8px; font-size: 14px; display: flex; align-items: center; gap: 6px; }
.nav-menu a i { font-size: 16px; color: var(--primary); }
.nav-menu a:hover, .nav-menu a.active { color: var(--primary); background: rgba(45,90,74,0.08); }
.mobile-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--primary-dark); padding: 8px; }

/* HERO */
.hero { background: linear-gradient(rgba(30,61,50,0.88), rgba(28,40,51,0.85)), url('https://bursatasduvar.com/images/bursatasduvar-anasayfa.jpg'); background-size: cover; background-position: center; color: white; padding: 120px 20px; text-align: center; min-height: 650px; display: flex; align-items: center; justify-content: center; position: relative; }
.hero::before { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 150px; background: linear-gradient(to top, var(--bg-white), transparent); }
.hero-content { max-width: 850px; margin: 0 auto; position: relative; z-index: 1; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(212,175,55,0.2); color: var(--accent); padding: 8px 20px; border-radius: 50px; font-size: 14px; font-weight: 600; margin-bottom: 24px; border: 1px solid rgba(212,175,55,0.3); }
.hero h2 { font-size: 52px; margin-bottom: 20px; font-weight: 800; line-height: 1.15; }
.hero p { font-size: 20px; margin-bottom: 40px; opacity: 0.95; max-width: 650px; margin-left: auto; margin-right: auto; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* BUTONLAR */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 16px 32px; border-radius: var(--radius); font-weight: 600; font-size: 15px; cursor: pointer; border: none; transition: all 0.3s; }
.btn i { font-size: 18px; }
.btn-primary { background: var(--primary); color: white; box-shadow: 0 4px 15px rgba(45,90,74,0.3); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 8px 25px rgba(45,90,74,0.4); }
.btn-secondary { background: white; color: var(--primary); border: 2px solid white; }
.btn-secondary:hover { background: transparent; color: white; transform: translateY(-3px); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: white; }

/* STICKY BUTONLAR */
.sticky-buttons { position: fixed; right: 24px; bottom: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 12px; }
.sticky-btn { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; font-size: 28px; box-shadow: var(--shadow-lg); transition: all 0.3s; }
.sticky-btn i { font-size: 28px; }
.sticky-btn:hover { transform: scale(1.1) translateY(-3px); }
.sticky-btn.whatsapp { background: #25D366; animation: pulse 2.5s infinite; }
.sticky-btn.phone { background: var(--primary); animation: pulse 2.5s infinite; animation-delay: 1s; }
@keyframes pulse { 0%, 100% { box-shadow: 0 6px 20px rgba(0,0,0,0.25), 0 0 0 0 rgba(37,211,102,0.5); } 50% { box-shadow: 0 6px 20px rgba(0,0,0,0.25), 0 0 0 18px rgba(37,211,102,0); } }

/* BOLUMLER */
.section { padding: 100px 20px; }
.section-light { background: var(--bg-light); }
.section-title { text-align: center; margin-bottom: 60px; }
.section-title h2 { font-size: 40px; color: var(--primary-dark); margin-bottom: 16px; font-weight: 800; }
.section-title p { font-size: 18px; color: var(--text-light); max-width: 650px; margin: 0 auto; }
.section-title::after { content: ''; display: block; width: 80px; height: 4px; background: var(--accent); margin: 24px auto 0; border-radius: 2px; }

/* HIZMET KARTLARI */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 28px; margin-top: 40px; }
.service-card { background: white; border-radius: var(--radius); padding: 36px 30px; box-shadow: var(--shadow); transition: all 0.3s; border: 1px solid var(--border); text-align: center; position: relative; overflow: hidden; }
.service-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); transform: scaleX(0); transition: all 0.3s; }
.service-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: rgba(45,90,74,0.1); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon { width: 90px; height: 90px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: 20px; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; color: white; font-size: 38px; box-shadow: 0 8px 25px rgba(45,90,74,0.25); }
.service-card h3 { font-size: 22px; color: var(--primary-dark); margin-bottom: 14px; font-weight: 700; }
.service-card p { color: var(--text-light); margin-bottom: 20px; font-size: 15px; line-height: 1.7; }
.service-card .link { color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 8px; font-size: 14px; }
.service-card .link:hover { color: var(--primary-dark); gap: 12px; }

/* OZELLIKLER */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; margin-top: 40px; }
.feature-item { display: flex; gap: 20px; align-items: flex-start; padding: 24px; background: white; border-radius: var(--radius); box-shadow: var(--shadow); transition: all 0.3s; }
.feature-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.feature-icon { flex-shrink: 0; width: 64px; height: 64px; background: linear-gradient(135deg, var(--accent), #E8C547); color: var(--secondary); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 26px; }
.feature-content h4 { color: var(--primary-dark); margin-bottom: 8px; font-size: 18px; font-weight: 700; }
.feature-content p { color: var(--text-light); font-size: 14px; line-height: 1.6; }

/* GALERI */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.gallery-item { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/3; cursor: pointer; box-shadow: var(--shadow); background: linear-gradient(135deg, var(--primary), var(--secondary)); }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: all 0.4s; }
.gallery-item:hover img { transform: scale(1.1); }
.gallery-item::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(45,90,74,0.3), rgba(28,40,51,0.5)); transition: all 0.3s; z-index: 1; }
.gallery-item:hover::before { background: linear-gradient(135deg, rgba(45,90,74,0.1), rgba(28,40,51,0.3)); }
.gallery-overlay { position: absolute; bottom: 0; left: 0; right: 0; padding: 24px; background: linear-gradient(to top, rgba(30,61,50,0.95), transparent); z-index: 2; transform: translateY(100%); transition: all 0.3s; }
.gallery-item:hover .gallery-overlay { transform: translateY(0); }
.gallery-overlay i { font-size: 32px; color: white; margin-bottom: 8px; display: block; }
.gallery-overlay h4 { color: white; font-size: 18px; margin-bottom: 4px; }
.gallery-overlay p { color: rgba(255,255,255,0.8); font-size: 13px; }

/* CTA */
.cta-section { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: white; padding: 80px 20px; text-align: center; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: -50%; right: -20%; width: 500px; height: 500px; background: rgba(255,255,255,0.03); border-radius: 50%; }
.cta-section h2 { font-size: 38px; margin-bottom: 20px; font-weight: 800; }
.cta-section p { font-size: 18px; margin-bottom: 35px; opacity: 0.95; max-width: 650px; margin-left: auto; margin-right: auto; }

/* ILETISIM */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; margin-top: 40px; }
.contact-info { background: linear-gradient(135deg, var(--secondary), #151d26); color: white; padding: 48px; border-radius: var(--radius); }
.contact-info h3 { font-size: 26px; margin-bottom: 32px; color: var(--accent); font-weight: 700; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 28px; }
.contact-item-icon { flex-shrink: 0; width: 50px; height: 50px; background: rgba(45,90,74,0.3); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--accent); }
.contact-item strong { display: block; margin-bottom: 6px; color: white; font-size: 16px; }
.contact-item span, .contact-item a { color: rgba(255,255,255,0.8); font-size: 15px; }
.contact-item a:hover { color: var(--accent); }
.contact-form { background: white; padding: 48px; border-radius: var(--radius); box-shadow: var(--shadow); }
.contact-form h3 { font-size: 26px; margin-bottom: 12px; color: var(--primary-dark); }
.contact-form > p { color: var(--text-light); margin-bottom: 28px; font-size: 15px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; color: var(--text-dark); font-size: 14px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 14px 18px; border: 2px solid var(--border); border-radius: 8px; font-size: 15px; font-family: inherit; transition: all 0.3s; background: var(--bg-light); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(45,90,74,0.1); background: white; }
.form-group textarea { resize: vertical; min-height: 130px; }

/* FOOTER */
.footer { background: var(--secondary); color: white; padding: 80px 20px 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-col h4 { color: var(--accent); margin-bottom: 24px; font-size: 18px; font-weight: 700; }
.footer-col p, .footer-col li { color: rgba(255,255,255,0.75); font-size: 14px; line-height: 1.8; margin-bottom: 8px; }
.footer-col ul { list-style: none; }
.footer-col a { color: rgba(255,255,255,0.75); display: flex; align-items: center; gap: 8px; }
.footer-col a::before { content: '>'; color: var(--accent); font-weight: bold; }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; color: rgba(255,255,255,0.5); font-size: 14px; }

/* SAYFA HERO */
.page-hero { background: linear-gradient(135deg, var(--primary-dark), var(--secondary)); color: white; padding: 100px 20px; text-align: center; position: relative; }
.page-hero::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 80px; background: linear-gradient(to top, var(--bg-white), transparent); }
.page-hero h1 { font-size: 44px; margin-bottom: 16px; font-weight: 800; }
.breadcrumb { display: flex; justify-content: center; gap: 10px; font-size: 15px; opacity: 0.9; position: relative; z-index: 1; }
.breadcrumb a { color: rgba(255,255,255,0.8); display: flex; align-items: center; gap: 8px; }
.breadcrumb a:hover { color: var(--accent); }

/* ICERIK */
.content-wrapper { max-width: 1100px; margin: 0 auto; padding: 60px 20px; }
.content-wrapper h2 { color: var(--primary-dark); font-size: 32px; margin: 40px 0 20px; font-weight: 800; position: relative; padding-left: 20px; }
.content-wrapper h2::before { content: ''; position: absolute; left: 0; top: 8px; bottom: 8px; width: 4px; background: var(--accent); border-radius: 2px; }
.content-wrapper h3 { color: var(--primary); font-size: 24px; margin: 32px 0 16px; font-weight: 700; }
.content-wrapper p { margin-bottom: 20px; color: #4A5568; font-size: 16px; line-height: 1.8; }
.content-wrapper ul, .content-wrapper ol { margin: 16px 0 28px 28px; }
.content-wrapper li { margin-bottom: 12px; color: #4A5568; font-size: 16px; line-height: 1.7; }

/* LIGHTBOX */
.lightbox { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.95); z-index: 10000; justify-content: center; align-items: center; padding: 40px; }
.lightbox.active { display: flex; }
.lightbox-content { max-width: 90%; max-height: 90%; position: relative; }
.lightbox-content img { max-width: 100%; max-height: 85vh; border-radius: var(--radius); box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.lightbox-close { position: absolute; top: 20px; right: 20px; width: 50px; height: 50px; background: rgba(255,255,255,0.1); border: none; border-radius: 50%; color: white; font-size: 24px; cursor: pointer; transition: all 0.3s; z-index: 10001; }
.lightbox-close:hover { background: rgba(255,255,255,0.2); transform: rotate(90deg); }
.lightbox-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 50px; height: 50px; background: rgba(255,255,255,0.1); border: none; border-radius: 50%; color: white; font-size: 24px; cursor: pointer; transition: all 0.3s; }
.lightbox-nav:hover { background: var(--primary); }
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

/* RESPONSIVE */
@media (max-width: 992px) {
    .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; background: white; flex-direction: column; padding: 16px; box-shadow: var(--shadow); gap: 4px; }
    .nav-menu.active { display: flex; }
    .nav-menu a { padding: 12px 16px; border-radius: 8px; }
    .mobile-toggle { display: block; }
    .hero h2 { font-size: 38px; }
    .section-title h2 { font-size: 32px; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 768px) {
    .hero { padding: 80px 20px; min-height: 500px; }
    .hero h2 { font-size: 30px; }
    .hero p { font-size: 16px; }
    .section-title h2 { font-size: 28px; }
    .services-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr; }
    .sticky-buttons { right: 16px; bottom: 16px; }
    .sticky-btn { width: 56px; height: 56px; }
    .sticky-btn i { font-size: 24px; }
    .section { padding: 60px 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .contact-info, .contact-form { padding: 32px; }
}
@media (max-width: 480px) {
    .hero h2 { font-size: 26px; }
    .btn { padding: 14px 24px; font-size: 14px; width: 100%; }
    .hero-buttons { flex-direction: column; }
    .section-title h2 { font-size: 24px; }
}