/* ================= Design Tokens ================= */
:root{
  --navy: #0b1a30;
  --navy-2: #0f2140;
  --navy-3: #142a4d;
  --gold: #cda449;
  --gold-dark: #b78a2f;
  --gold-light: #e8c98a;
  --cream: #f7f5f1;
  --white: #ffffff;
  --text-dark: #14213a;
  --text-muted: #5c6472;
  --border-light: #e6e2da;

  --font-head: 'Poppins', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Arial, sans-serif;

  --space-section: clamp(3.5rem, 3rem + 3vw, 6.5rem);
  --radius: 10px;
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --container: 1180px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *,*::before,*::after{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

html, body{
  margin:0;
  padding:0;
  width: 100%;
  max-width: 100%;
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden !important;
  position: relative;
}

h1,h2,h3,h4{
  font-family: var(--font-head);
  color: var(--text-dark);
  margin: 0 0 0.6em;
  line-height: 1.2;
}

p{ margin: 0 0 1em; }
ul{ list-style: none; margin:0; padding:0; }
a{ color: inherit; text-decoration: none; }
img, svg, picture, video, canvas, iframe{ max-width: 100%; height: auto; }
button{ font-family: inherit; cursor:pointer; }

.container{
  max-width: var(--container);
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  box-sizing: border-box;
}

.skip-link{
  position:absolute; left:-9999px; top:0; background:var(--gold); color:var(--navy);
  padding:10px 16px; z-index:1000; font-weight:600;
}
.skip-link:focus{ left: 16px; top: 16px; }

/* ================= Buttons ================= */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 14px 30px;
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 3px;
  border: 1.5px solid transparent;
  transition: transform var(--duration-fast) var(--ease-out-expo), background var(--duration-normal), color var(--duration-normal), border-color var(--duration-normal);
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-2px); }
.btn:focus-visible{ outline: 2px solid var(--gold); outline-offset: 3px; }

.btn-gold{ background: var(--gold); color: var(--navy); border-color: var(--gold); }
.btn-gold:hover{ background: var(--gold-dark); border-color: var(--gold-dark); }

.btn-outline{ background: transparent; color: var(--white); border-color: rgba(255,255,255,0.55); }
.btn-outline:hover{ background: rgba(255,255,255,0.1); border-color: var(--white); }

/* ================= Header ================= */
.site-header{
  position: sticky; top:0; z-index: 500;
  background: var(--navy);
  border-bottom: 1px solid rgba(201,164,73,0.18);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  height: 76px;
  gap: 20px;
}
.brand{ display:flex; align-items:center; gap:12px; flex-shrink:0; }
.brand-mark{ width:38px; height:38px; }
.brand-logo-img{ height: 44px; width: auto; max-width: 48px; object-fit: contain; filter: drop-shadow(0 2px 6px rgba(205,164,73,0.35)); transition: transform var(--duration-fast); }
.brand:hover .brand-logo-img{ transform: scale(1.05); }
.brand-text{
  font-family: var(--font-head); font-weight:700; letter-spacing:0.04em;
  color: var(--white); font-size: 1.15rem; line-height:1;
  display:flex; flex-direction:column;
}
.brand-text small{
  font-size: 0.5rem; font-weight:500; letter-spacing: 0.35em; color: var(--gold); margin-top:3px;
}

.main-nav{ display:flex; align-items:center; gap: 24px; }
.main-nav a{
  color: rgba(255,255,255,0.85); font-size: 0.78rem; font-weight:600;
  letter-spacing: 0.03em; text-transform: uppercase;
  position: relative; padding: 6px 0; white-space: nowrap;
}
.main-nav a::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:2px; background: var(--gold);
  transition: width var(--duration-normal) var(--ease-out-expo);
}
.main-nav a:hover::after, .main-nav a.active::after{ width:100%; }
.main-nav a:hover{ color: var(--white); }

.header-actions{ display:flex; align-items:center; gap:18px; }

.lang-toggle{
  background: transparent; border: 1px solid rgba(255,255,255,0.3); border-radius: 30px;
  padding: 6px 12px; display:flex; align-items:center; gap:6px;
  color: rgba(255,255,255,0.75); font-size: 0.72rem; font-weight:700; letter-spacing:0.05em;
}
.lang-toggle:hover{ border-color: var(--gold); }
.lang-opt{ padding: 2px 4px; border-radius: 12px; transition: color var(--duration-normal), background var(--duration-normal); }
.lang-sep{ opacity:0.4; }
html[data-lang="en"] .lang-opt[data-lang-opt="en"],
html[data-lang="tr"] .lang-opt[data-lang-opt="tr"]{
  color: var(--navy); background: var(--gold);
}

.header-cta{ padding: 11px 22px; }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width: 36px; height:36px; background:none; border:none; padding:0;
}
.nav-toggle span{ display:block; width:100%; height:2px; background: var(--white); transition: transform var(--duration-normal), opacity var(--duration-normal); }
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ================= Hero ================= */
.hero{
  position: relative; background: var(--navy); color: var(--white); overflow:hidden;
  padding: clamp(3rem, 4vw, 5rem) 0;
}
.hero-map{ position:absolute; inset:0; opacity:0.9; pointer-events:none; }
.hero-map svg{ width:100%; height:100%; }

.hero-inner{
  position: relative; z-index: 2;
  display:grid; grid-template-columns: 1.05fr 1fr; gap: 3rem; align-items:center;
}

.eyebrow{
  color: var(--gold); font-size: 0.78rem; font-weight:700; letter-spacing: 0.14em; text-transform: uppercase;
  margin-bottom: 14px; position:relative; padding-left:0;
}
.eyebrow::after{ content:''; display:block; width:46px; height:2px; background: var(--gold); margin-top:10px; }
.eyebrow-dark{ color: var(--gold-dark); }

.hero h1{
  font-size: clamp(2.1rem, 1.5rem + 2.5vw, 3.2rem);
  font-weight: 800; letter-spacing: -0.01em; color: var(--white); margin-bottom: 20px;
}
.hero h1 span{ display:block; }
.hero h1 .accent{ color: var(--gold); }

.hero-lede{ color: rgba(255,255,255,0.75); font-size: 1.02rem; max-width: 460px; margin-bottom: 30px; }
.hero-actions{ display:flex; gap: 16px; flex-wrap: wrap; }

.hero-visual{ position:relative; display:flex; align-items:center; justify-content:center; }
.hero-visual-img{ width: 100%; max-width: 620px; height: auto; border-radius: 12px; border: 1px solid rgba(201,164,73,0.25); filter: drop-shadow(0 20px 40px rgba(0,0,0,0.5)); transition: transform var(--duration-normal); }
.hero-visual:hover .hero-visual-img{ transform: translateY(-4px); }

/* ================= Trust strip ================= */
.trust-strip{ background: var(--white); border-bottom: 1px solid var(--border-light); padding: 26px 0; }
.trust-grid{ display:grid; grid-template-columns: repeat(5,1fr); gap: 20px; }
.trust-item{ display:flex; align-items:center; gap:12px; }
.trust-item svg{ width:34px; height:34px; flex-shrink:0; }
.trust-item span{ font-size: 0.74rem; font-weight:700; letter-spacing:0.02em; color: var(--text-dark); line-height:1.35; text-transform: uppercase; }

/* ================= Services ================= */
.services{ background: var(--cream); padding: var(--space-section) 0; }
.section-head{ text-align:left; margin-bottom: 2.5rem; }
.section-head h2{ font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.1rem); font-weight:800; text-transform: uppercase; }

.services-grid{
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--border-light); border: 1px solid var(--border-light);
}
.service-card{
  background: var(--white); padding: 2.4rem 1.4rem; text-align:center;
  display:flex; flex-direction:column; align-items:center; gap: 16px;
  transition: transform var(--duration-normal) var(--ease-out-expo), box-shadow var(--duration-normal);
}
.service-card svg{ width: 46px; height:46px; }
.service-card h3{ font-size: 0.86rem; font-weight:700; letter-spacing:0.02em; text-transform:uppercase; margin:0; }
.service-card:hover{ transform: translateY(-6px); box-shadow: 0 16px 30px rgba(11,26,48,0.1); position:relative; z-index:1; }

/* ================= Split section ================= */
.split-section{ display:grid; grid-template-columns: 1fr 1fr; }
.split-panel{ display:grid; grid-template-columns: 1fr 1fr; }
.panel-dark{ background: var(--navy); color: var(--white); }
.panel-light{ background: var(--white); }
.panel-inner{ padding: clamp(2.4rem,2rem+2vw,3.6rem); display:flex; flex-direction:column; justify-content:center; }
.panel-inner h2{ font-size: clamp(1.4rem, 1.1rem + 1.2vw, 1.9rem); font-weight:800; }
.panel-lede{ color: var(--text-muted); }

.check-list li{
  position:relative; padding-left: 34px; margin-bottom: 14px; font-weight:600; font-size:0.95rem;
}
.check-list li::before{
  content:''; position:absolute; left:0; top:1px; width:20px; height:20px; border-radius:50%;
  background: var(--gold);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23000' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") no-repeat center / 62%;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23000' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") no-repeat center / 62%;
}
.check-list-dark li{ color: var(--text-dark); }

.panel-visual{ position:relative; overflow:hidden; display:flex; align-items:center; justify-content:center; width:100%; height:100%; min-height: 360px; }
.office-img, .handshake-img{ width:100%; height:100%; object-fit:cover; display:block; min-height: 360px; }
.visual-office{ background: var(--navy-2); }
.visual-handshake{ background: var(--cream); }

/* ================= Stats ================= */
.stats{ background: var(--navy); padding: 3rem 0; }
.stats-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap: 2rem; }
.stat-item{ display:flex; align-items:center; gap:16px; }
.stat-item svg{ width:42px; height:42px; flex-shrink:0; }
.stat-item strong{ display:block; font-family: var(--font-head); font-size: 1.7rem; font-weight:800; color: var(--white); }
.stat-item span{ font-size: 0.78rem; color: rgba(255,255,255,0.7); text-transform:uppercase; letter-spacing:0.03em; font-weight:600; }

/* ================= Contact ================= */
.contact{ background: var(--cream); padding: var(--space-section) 0; }
.contact-grid{ display:grid; grid-template-columns: 1.1fr 1.5fr 0.9fr; gap: 2.4rem; align-items:start; }
.contact-info h2{ font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.1rem); font-weight:800; }
.info-list li{ display:flex; align-items:center; gap:14px; margin-bottom:18px; font-weight:600; }
.info-list svg{ width:26px; height:26px; flex-shrink:0; }
.info-list a{ color: var(--text-dark); }
.info-list a:hover{ color: var(--gold-dark); }

.contact-form{ background: var(--white); border: 1px solid var(--border-light); border-radius: var(--radius); padding: 1.8rem; }
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field{ margin-bottom: 14px; }
.field label{ display:block; font-size: 0.72rem; font-weight:700; text-transform:uppercase; letter-spacing:0.04em; color: var(--text-muted); margin-bottom: 6px; }
.field input, .field textarea{
  width:100%; border: 1px solid var(--border-light); border-radius: 4px; padding: 12px 14px;
  font-family: inherit; font-size: 0.92rem; background: var(--cream); color: var(--text-dark);
  transition: border-color var(--duration-normal), box-shadow var(--duration-normal);
}
.field input:focus, .field textarea:focus{
  outline:none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,164,73,0.2); background: var(--white);
}
.field textarea{ resize: vertical; min-height: 100px; }
.form-submit{ width:100%; margin-top:6px; }
.form-submit:disabled{ opacity:0.6; cursor:not-allowed; transform:none; }
.form-status{ margin: 10px 0 0; font-size:0.85rem; font-weight:600; min-height: 1.2em; }
.form-status.success{ color: #1e7a3d; }
.form-status.error{ color: #b23a3a; }

.contact-cta{
  background: var(--navy); color: var(--white); border-radius: var(--radius);
  padding: 2rem 1.6rem; text-align:center;
}
.contact-cta svg{ width:44px; height:44px; margin: 4px auto 14px; }
.contact-cta p{ color: rgba(255,255,255,0.75); font-size: 0.9rem; }
.contact-cta .btn{ width:100%; }

/* ================= Footer ================= */
.site-footer{ background: var(--navy); color: rgba(255,255,255,0.75); padding-top: 3.5rem; }
.footer-grid{ display:grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr; gap: 2rem; padding-bottom: 2.5rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand .brand{ margin-bottom: 14px; }
.footer-brand p{ font-size: 0.86rem; line-height:1.6; }
.footer-col h4{ color: var(--white); font-size: 0.85rem; text-transform:uppercase; letter-spacing:0.05em; margin-bottom: 16px; }
.footer-col a{ display:block; font-size: 0.86rem; margin-bottom: 10px; color: rgba(255,255,255,0.7); }
.footer-col a:hover{ color: var(--gold); }

.social-row{ display:flex; gap:10px; }
.social-row a{
  width:36px; height:36px; border-radius:50%; border: 1px solid rgba(255,255,255,0.25);
  display:flex; align-items:center; justify-content:center; color: rgba(255,255,255,0.8);
  transition: background var(--duration-normal), border-color var(--duration-normal), color var(--duration-normal);
}
.social-row a svg{ width:16px; height:16px; }
.social-row a:hover{ background: var(--gold); border-color: var(--gold); color: var(--navy); }

.footer-bottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px;
  padding: 1.4rem 24px; font-size: 0.78rem; color: rgba(255,255,255,0.55);
}

/* ================= Back to top ================= */
.back-to-top{
  position: fixed; right: 22px; bottom: 22px; width: 46px; height:46px; border-radius:50%;
  background: var(--gold); color: var(--navy); border:none; display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transform: translateY(10px);
  transition: opacity var(--duration-normal), transform var(--duration-normal), visibility var(--duration-normal);
  z-index: 400; box-shadow: 0 8px 20px rgba(0,0,0,0.25);
}
.back-to-top.visible{ opacity:1; visibility:visible; transform:translateY(0); }
.back-to-top svg{ width:20px; height:20px; }

/* ================= Reveal animation ================= */
[data-reveal]{ opacity:0; transform: translateY(24px); transition: opacity 700ms var(--ease-out-expo), transform 700ms var(--ease-out-expo); }
[data-reveal].in-view{ opacity:1; transform:none; }

/* ================= Responsive ================= */
@media (max-width: 1024px){
  .trust-grid{ grid-template-columns: repeat(3,1fr); }
  .services-grid{ grid-template-columns: repeat(3,1fr); }
  .contact-grid{ grid-template-columns: 1fr; }
  .stats-grid{ grid-template-columns: repeat(2,1fr); row-gap: 1.6rem; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .footer-brand{ grid-column: 1 / -1; }
  .split-section{ grid-template-columns: 1fr; }
}

@media (max-width: 860px){
  .header-inner{ height: 68px; }
  .main-nav{
    position:fixed; top:68px; left:0; right:0; bottom:0; background: var(--navy);
    flex-direction:column; align-items:flex-start; gap:0; padding: 20px 24px 40px;
    transform: translateX(-100%); transition: transform var(--duration-normal) var(--ease-out-expo);
    overflow-y:auto; z-index: 999;
  }
  .main-nav.open{ transform: translateX(0); }
  .main-nav a{ width:100%; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.08); font-size: 0.95rem; }
  .nav-toggle{ display:flex; }
  .header-cta{ display:none; }

  .hero-inner{ grid-template-columns: 1fr; gap: 2rem; }
  .hero-visual{ margin-top: 1rem; width: 100%; }
  .hero-visual-img{ max-width: 100%; height: auto; }
  
  .split-section{ grid-template-columns: 1fr; }
  .split-panel{ grid-template-columns: 1fr; }
  .panel-visual{ min-height: 240px; width: 100%; order: -1; }
  .office-img, .handshake-img{ min-height: 240px; max-height: 320px; }
}

@media (max-width: 640px){
  .trust-grid{ grid-template-columns: repeat(2,1fr); }
  .services-grid{ grid-template-columns: repeat(2,1fr); }
  .stats-grid{ grid-template-columns: 1fr; }
  .form-row{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .hero-actions{ flex-direction:column; align-items:stretch; }
  .hero-visual-img{ max-width: 100%; }
  .panel-inner{ padding: 2rem 1.2rem; }
}

@media (max-width: 480px){
  .trust-grid{ grid-template-columns: 1fr; }
  .services-grid{ grid-template-columns: 1fr; }
  .brand-logo-img{ height: 36px; width: auto; }
  .brand-text{ font-size: 1rem; }
  .brand-text small{ font-size: 0.45rem; }
  .btn{ width: 100%; }
  .footer-bottom{ flex-direction: column; text-align: center; gap: 6px; }
}