:root{
  --red:#e21f26;
  --red-dark:#b3151b;
  --red-light:#ff3b3b;
  --bg:#efefef;
  --bg-alt:#f5f5f5;
  --text:#2b2b2b;
  --text-soft:#666;
  --border:#e3e3e3;
  --shadow:0 10px 30px rgba(0,0,0,.08);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Poppins',sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* ============ HEADER ============ */
.site-header{
  background:var(--bg);
  padding:18px 0;
  position:sticky;top:0;z-index:100;
  transition:padding .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  padding:10px 0;
  box-shadow:0 2px 12px rgba(0,0,0,.08);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:30px;
}
.logo img{
  height:135px;width:135px;
  display:inline-block;
  transition:height .3s ease,width .3s ease;
}
.site-header.is-scrolled .logo img{
  height:90px;width:90px;
}
.main-nav{
  display:flex;gap:36px;
  margin-left:40px;flex:1;
}
.main-nav a{
  font-size:15px;font-weight:400;color:#333;
  transition:.25s;position:relative;padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:2px;
  background:var(--red);transition:.3s;transform:translateX(-50%);
}
.main-nav a:hover{color:var(--red)}
.main-nav a:hover::after{width:100%}

.header-right{display:flex;align-items:center;gap:24px}
.social{display:flex;gap:14px}
.social a{
  color:#222;font-size:16px;transition:.25s;
}
.social a:hover{color:var(--red)}

.hotline{
  display:flex;align-items:center;gap:12px;
  background:var(--red);color:#fff;
  padding:14px 24px;border-radius:6px;
  box-shadow:0 6px 18px rgba(226,31,38,.35);
  transition:.3s;
}
.hotline:hover{background:var(--red-dark);transform:translateY(-2px)}
.hotline i{font-size:18px}
.hotline small{display:block;font-size:11px;font-weight:500;letter-spacing:.5px;opacity:.95}
.hotline strong{display:block;font-size:16px;font-weight:700;letter-spacing:.5px}

.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--red);cursor:pointer}

/* ============ HERO ============ */
.hero{
  position:relative;
  background:var(--bg);
  padding:60px 0 0;
  overflow:hidden;
}
.hero-grid{
  display:grid;grid-template-columns:1.1fr 1fr;
  align-items:center;gap:40px;
  position:relative;z-index:2;
  min-height:460px;
  padding-bottom:80px;
}
.hero-text{padding-left:80px;max-width:560px}
.hero-text h1{
  font-size:52px;font-weight:300;color:var(--red);
  line-height:1.15;margin-bottom:24px;letter-spacing:-.5px;
}
.hero-text h1 span{font-weight:700;display:inline-block}
.hero-text p{
  color:#444;font-size:14px;line-height:1.85;
  max-width:380px;margin-bottom:36px;
}

.btn-detay{
  display:inline-block;
  background:#fff;color:var(--red);
  padding:16px 38px;border-radius:4px;
  font-size:13px;font-weight:600;letter-spacing:2px;
  border:none;cursor:pointer;
  box-shadow:0 8px 20px rgba(0,0,0,.08);
  transition:.3s;
}
.btn-detay:hover{
  background:var(--red);color:#fff;
  transform:translateY(-2px);
  box-shadow:0 12px 28px rgba(226,31,38,.3);
}
.btn-detay.dark{background:#222;color:#fff}
.btn-detay.dark:hover{background:var(--red)}

.hero-visual{
  position:relative;
  display:flex;align-items:center;justify-content:center;
  height:480px;
}
.bolt{
  position:absolute;
  width:auto;height:420px;
}
.bolt-main{
  z-index:2;
  filter:drop-shadow(0 30px 40px rgba(226,31,38,.35));
  animation:float 6s ease-in-out infinite;
  transform:rotate(-5deg);
}
.bolt-shadow{
  z-index:1;
  transform:translate(70px,40px) rotate(8deg);
  opacity:.45;
  filter:blur(2px);
  animation:floatShadow 6s ease-in-out infinite;
}
@keyframes float{
  0%,100%{transform:rotate(-5deg) translateY(0)}
  50%{transform:rotate(-5deg) translateY(-14px)}
}
@keyframes floatShadow{
  0%,100%{transform:translate(70px,40px) rotate(8deg)}
  50%{transform:translate(70px,30px) rotate(8deg)}
}

/* hero SVG divider */
.hero-divider{
  display:block;
  position:relative;
  z-index:3;
  margin-top:-80px;
  line-height:0;
}
.hero-divider svg{
  display:block;
  width:100%;
  height:200px;
}

/* ============ SECTION LABEL ============ */
.section-label{
  font-size:13px;font-weight:500;letter-spacing:4px;
  color:#999;text-transform:uppercase;
  margin-bottom:36px;position:relative;display:inline-block;
}
.section-label::after{
  content:"";display:block;width:30px;height:2px;
  background:var(--red);margin-top:8px;
}
.section-sub{
  color:var(--text-soft);font-size:14px;margin:-24px 0 36px;max-width:600px;
}

/* ============ HABERLER ============ */
.news{padding:80px 0;background:#fff}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.news-card{
  background:#fff;border-radius:8px;overflow:hidden;
  box-shadow:0 4px 20px rgba(0,0,0,.06);
  transition:.35s;border:1px solid var(--border);
}
.news-card:hover{transform:translateY(-8px);box-shadow:0 16px 40px rgba(0,0,0,.12)}
.news-img{
  height:220px;
  background-size:cover;background-position:center;
}
.news-body{padding:26px}
.news-date{
  font-size:12px;color:var(--red);font-weight:600;
  letter-spacing:1px;margin-bottom:10px;display:block;
}
.news-body h3{
  font-size:18px;font-weight:600;color:#1a1a1a;
  margin-bottom:12px;line-height:1.4;
}
.news-body p{color:var(--text-soft);font-size:14px;margin-bottom:18px}
.news-link{
  color:var(--red);font-weight:500;font-size:13px;
  display:inline-flex;align-items:center;gap:8px;
  letter-spacing:.5px;transition:.3s;
}
.news-link:hover{gap:14px}

/* ============ VIDEOS ============ */
.videos{padding:80px 0;background:var(--bg-alt)}
.videos-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.video-card{transition:.3s}
.video-card:hover{transform:translateY(-6px)}
.video-thumb{
  height:220px;background-size:cover;background-position:center;
  border-radius:8px;position:relative;cursor:pointer;
  overflow:hidden;box-shadow:0 8px 24px rgba(0,0,0,.12);
}
.video-thumb::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(226,31,38,.6),rgba(0,0,0,.5));
}
.play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:64px;height:64px;border-radius:50%;
  background:#fff;color:var(--red);
  border:none;font-size:18px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:.3s;z-index:2;
}
.play:hover{background:var(--red);color:#fff;transform:translate(-50%,-50%) scale(1.1)}
.video-card h4{
  font-size:15px;font-weight:600;margin-top:18px;color:#1a1a1a;
}

/* ============ KURUMSAL ============ */
.about{padding:80px 0;background:#fff}
.about-grid{display:grid;grid-template-columns:340px 1fr;gap:60px;align-items:start}
.about-side .section-label{margin-bottom:20px}
.about-year{
  font-size:96px;font-weight:800;color:var(--red);
  line-height:1;letter-spacing:-3px;margin-bottom:30px;
}
.about-content p{
  color:#444;font-size:15px;line-height:1.9;margin-bottom:18px;
}
.about-content strong{color:var(--red);font-weight:600}

/* ============ DÖKÜMANLAR ============ */
.docs{padding:80px 0;background:var(--bg-alt)}
.docs-list{display:flex;flex-direction:column;gap:14px}
.doc-item{
  display:flex;align-items:center;gap:20px;
  background:#fff;padding:22px 26px;border-radius:6px;
  transition:.3s;border-left:3px solid var(--red);
  box-shadow:0 2px 10px rgba(0,0,0,.04);
}
.doc-item:hover{transform:translateX(6px);box-shadow:0 8px 20px rgba(0,0,0,.1)}
.doc-item > i:first-child{font-size:28px;color:var(--red)}
.doc-item span{flex:1;font-size:14px;font-weight:500;letter-spacing:.5px;color:#1a1a1a}
.doc-item .arrow{color:#999;font-size:14px;transition:.3s}
.doc-item:hover .arrow{color:var(--red);transform:translateX(4px)}

/* ============ İLETİŞİM ============ */
.contact{padding:80px 0;background:#fff}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:80px;align-items:start}
.contact-info h2{
  font-size:38px;font-weight:700;color:#1a1a1a;
  margin-bottom:36px;line-height:1.2;
}
.info-block{margin-bottom:28px}
.info-block h4{
  font-size:12px;font-weight:600;letter-spacing:2px;
  color:#999;margin-bottom:8px;
}
.info-block p,.info-block a{font-size:15px;color:#333;line-height:1.6}
.info-block a:hover{color:var(--red)}

.contact-form{
  background:var(--bg-alt);padding:40px;border-radius:8px;
  box-shadow:0 10px 30px rgba(0,0,0,.05);
}
.contact-form h3{
  font-size:14px;font-weight:600;letter-spacing:3px;
  color:var(--red);margin-bottom:28px;
}
.form-field{margin-bottom:18px}
.form-field label{
  display:block;font-size:12px;font-weight:500;
  color:#888;margin-bottom:6px;letter-spacing:.5px;
}
.form-field input,.form-field textarea{
  width:100%;padding:12px 14px;
  border:none;border-bottom:1px solid #ccc;
  background:transparent;font-family:'Poppins',sans-serif;
  font-size:14px;color:#222;transition:.25s;
}
.form-field textarea{resize:vertical;border:1px solid #ccc;border-radius:4px}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--red);
}
.contact-form .btn-detay{margin-top:10px;background:var(--red);color:#fff}
.contact-form .btn-detay:hover{background:var(--red-dark)}

/* ============ FOOTER ============ */
.site-footer{
  background:#1a1a1a;color:#ccc;padding:40px 0;
}
.footer-inner{
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
}
.footer-logo{display:flex;align-items:center;gap:16px}
.footer-logo img{height:81px;width:81px}
.footer-logo strong{display:block;color:#fff;font-size:14px;font-weight:600;letter-spacing:.5px}
.footer-logo span{font-size:11px;color:#999}
.copy{font-size:13px;color:#888}
.footer-social{display:flex;gap:14px}
.footer-social a{
  width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.08);color:#fff;
  display:flex;align-items:center;justify-content:center;transition:.3s;
}
.footer-social a:hover{background:var(--red)}

/* ============ RESPONSIVE ============ */
@media (max-width:1080px){
  .hero-text{padding-left:0}
  .hero-text h1{font-size:42px}
  .main-nav{gap:24px;margin-left:20px}
  .hotline strong{font-size:14px}
  .hotline small{font-size:10px}
  .logo img{height:108px;width:108px}
  .site-header.is-scrolled .logo img{height:72px;width:72px}
}
@media (max-width:900px){
  .main-nav{
    position:fixed;top:0;right:-300px;width:280px;height:100vh;
    background:#fff;flex-direction:column;padding:80px 24px;
    box-shadow:-10px 0 30px rgba(0,0,0,.15);transition:.4s;z-index:99;
    margin-left:0;
  }
  .main-nav.open{right:0}
  .main-nav a{padding:14px 0;border-bottom:1px solid var(--border);width:100%}
  .nav-toggle{display:block;z-index:101}
  .social{display:none}

  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-text{margin:0 auto}
  .hero-text p{margin-left:auto;margin-right:auto}
  .hero-visual{height:340px;order:-1}
  .bolt{height:300px}
  .hero{padding:40px 0 80px}

  .news-grid,.videos-grid{grid-template-columns:1fr}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .about-year{font-size:72px}
  .contact-info h2{font-size:30px}
  .footer-inner{flex-direction:column;text-align:center}
}
@media (max-width:560px){
  .header-inner{gap:12px}
  .hotline{padding:10px 14px}
  .hotline small{display:none}
  .hotline strong{font-size:13px}
  .hero-text h1{font-size:32px}
  .logo img{height:90px;width:90px}
  .site-header.is-scrolled .logo img{height:60px;width:60px}
}