/* ===== UMUT İSG - Tema: "Güvenli Adım" (lacivert / kırmızı, profesyonel OSGB) ===== */
:root{
  --navy:#122A4E;
  --navy-dark:#0B1D38;
  --red:#C1272D;
  --red-dark:#9E1E23;
  --gray-bg:#F4F6F9;
  --text:#2B333F;
  --muted:#6B7686;
  --white:#ffffff;
  --radius:10px;
  --shadow:0 6px 24px rgba(18,42,78,.10);
}
*{box-sizing:border-box;}
body{margin:0;font-family:'Open Sans',Arial,sans-serif;color:var(--text);background:var(--white);}
h1,h2,h3,h4{font-family:'Montserrat',Arial,sans-serif;font-weight:700;color:var(--navy);margin:0 0 12px;}
a{color:var(--navy);text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---- Top bar (üst şerit) ---- */
.top-bar{background:var(--navy-dark);color:#cdd7e6;font-size:13px;}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;height:38px;}
.top-bar a.social{margin-left:12px;color:#cdd7e6;font-size:15px;}
.top-bar a.social:hover{color:var(--white);}

/* ---- Header (logo / saat / adres / iletişim) ---- */
.site-header{background:var(--white);border-bottom:1px solid #e7ebf1;}
.site-header .container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;padding-top:16px;padding-bottom:16px;gap:16px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand img.logo{height:64px;width:auto;}
.brand-text .brand-title{font-family:'Montserrat',Arial,sans-serif;font-weight:800;color:var(--navy);font-size:20px;line-height:1.1;}
.brand-text .brand-sub{font-size:12px;color:var(--red);font-weight:600;letter-spacing:.5px;}
.header-info{display:flex;gap:28px;flex-wrap:wrap;}
.info-item{display:flex;align-items:flex-start;gap:10px;}
.info-item .ic{width:34px;height:34px;border-radius:50%;background:var(--gray-bg);display:flex;align-items:center;justify-content:center;color:var(--red);flex:0 0 auto;font-size:16px;}
.info-item .lbl{font-size:12px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.4px;}
.info-item .val{font-size:14px;color:var(--text);line-height:1.4;}

/* ---- Nav ---- */
.navbar{background:var(--navy);}
.navbar .container{display:flex;align-items:center;justify-content:space-between;}
.nav-toggle{display:none;background:none;border:0;color:var(--white);font-size:22px;padding:14px 0;cursor:pointer;}
.nav-menu{list-style:none;display:flex;margin:0;padding:0;flex-wrap:wrap;}
.nav-menu li a{display:block;color:#e7ecf5;padding:15px 16px;font-size:14px;font-weight:600;}
.nav-menu li a:hover,.nav-menu li a.active{background:var(--red);color:var(--white);}

/* ---- Hero ---- */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-dark) 100%);color:var(--white);padding:60px 0;}
.hero h1{color:var(--white);font-size:34px;}
.hero p{max-width:700px;color:#cfd8e6;font-size:16px;line-height:1.7;}

/* ---- Sections ---- */
.section{padding:56px 0;}
.section.alt{background:var(--gray-bg);}
.section-title{text-align:center;margin-bottom:36px;}
.section-title h2{font-size:26px;}
.section-title .bar{width:60px;height:4px;background:var(--red);margin:10px auto 0;border-radius:2px;}

.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;text-align:center;}
.card img{margin:0 auto 16px;height:56px;}
.card h3{font-size:17px;}
.card p{color:var(--muted);font-size:14px;line-height:1.6;}

/* ---- Hizmetler grid ---- */
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.service-item{background:var(--white);border:1px solid #e7ebf1;border-radius:var(--radius);padding:22px 16px;text-align:center;transition:.2s;}
.service-item:hover{border-color:var(--red);box-shadow:var(--shadow);transform:translateY(-3px);}
.service-item img{height:48px;margin:0 auto 12px;}
.service-item h4{font-size:14px;margin:0;color:var(--text);}

/* ---- Galeri grid (Kadromuz / Referanslarımız / Foto Galeri ortak) ---- */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.gallery-item{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--white);cursor:pointer;}
.gallery-item img{width:100%;height:200px;object-fit:cover;transition:.25s;}
.gallery-item:hover img{transform:scale(1.06);}
.gallery-item .cap{padding:10px 12px;font-size:13px;font-weight:700;color:var(--navy);text-align:center;}
.gallery-item .cap-overlay{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(0deg,rgba(11,29,56,.85),transparent);color:var(--white);padding:26px 12px 10px;font-size:13px;font-weight:700;}

/* ---- Lightbox ---- */
.lightbox-bg{display:none;position:fixed;z-index:9999;inset:0;background:rgba(11,29,56,.92);align-items:center;justify-content:center;padding:30px;}
.lightbox-bg.open{display:flex;}
.lightbox-bg img{max-width:90vw;max-height:85vh;border-radius:6px;}
.lightbox-close,.lightbox-prev,.lightbox-next{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;width:44px;height:44px;border-radius:50%;font-size:20px;cursor:pointer;}
.lightbox-close{top:24px;right:24px;}
.lightbox-prev{left:24px;top:50%;transform:translateY(-50%);}
.lightbox-next{right:24px;top:50%;transform:translateY(-50%);}

/* ---- Formlar ---- */
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:13px;font-weight:700;color:var(--navy);margin-bottom:6px;}
.form-control{width:100%;padding:11px 14px;border:1px solid #d7dee8;border-radius:6px;font-size:14px;font-family:inherit;}
.form-control:focus{outline:none;border-color:var(--red);}
.btn{display:inline-block;background:var(--red);color:var(--white);border:0;padding:12px 26px;border-radius:6px;font-weight:700;font-size:14px;cursor:pointer;}
.btn:hover{background:var(--red-dark);}
.btn-navy{background:var(--navy);}
.btn-navy:hover{background:var(--navy-dark);}

/* ---- Liste sayfası (Önemli Linkler) ---- */
.link-list{list-style:none;padding:0;margin:0;}
.link-list li{border-bottom:1px solid #e7ebf1;}
.link-list li a{display:flex;align-items:center;gap:10px;padding:14px 6px;font-weight:600;}
.link-list li a:hover{color:var(--red);}

/* ---- Footer ---- */
.site-footer{background:var(--navy-dark);color:#c3cede;padding:44px 0 20px;}
.footer-grid{display:grid;grid-template-columns:2fr 1.4fr 1fr;gap:30px;}
.footer-grid h4{color:var(--white);font-size:15px;margin-bottom:14px;}
.footer-grid p{font-size:13px;line-height:1.8;color:#aebbcf;}
.footer-bottom{text-align:center;font-size:12px;color:#7d8ba3;padding-top:20px;margin-top:24px;border-top:1px solid rgba(255,255,255,.08);}

/* ---- Mobil uyum ---- */
@media (max-width:960px){
  .cards-3{grid-template-columns:1fr;}
  .services-grid{grid-template-columns:repeat(2,1fr);}
  .gallery-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .header-info{display:none;}
  .nav-toggle{display:block;}
  .nav-menu{display:none;flex-direction:column;width:100%;background:var(--navy);}
  .nav-menu.open{display:flex;}
  .nav-menu li a{padding:14px 20px;border-top:1px solid rgba(255,255,255,.08);}
  .brand img.logo{height:50px;}
  .hero h1{font-size:24px;}
}
@media (max-width:480px){
  .services-grid{grid-template-columns:1fr 1fr;}
  .gallery-grid{grid-template-columns:1fr;}
  .top-bar .container{font-size:11px;}
}