/* =============================================================
   Esthé Istanbul — Stylesheet
   Palette (logodan alındı):
     --ink        #1A1A1A  logo yazı rengi (siyah, başlık/metin)
     --blue       #3B82C4  logo aksan rengi (mavi fırça vuruşu)
     --blue-dark  #1E3A5F  header/footer/contact (koyu lacivert)
     --blue-light #6BA3D6  ikincil aksan (eyebrow, hover)
     --bg         #FFFFFF  logo arka planı (beyaz)
     --bg-alt     #F4F6F8  hafif gri (alternatif bölümler)
     --line       #E3E6E9  ince ayraç çizgileri
   Type:
     Display — 'Fraunces' (headlines, editorial character)
     Body    — 'Sora' (UI + paragraphs)
   ============================================================= */

:root{
  --ink:#1A1A1A;
  --teal:#3B82C4;
  --teal-dark:#1E3A5F;
  --gold:#6BA3D6;
  --bg:#FFFFFF;
  --bg-alt:#F4F6F8;
  --line:#E3E6E9;
  --white:#FFFFFF;

  --font-display:'Fraunces', Georgia, serif;
  --font-body:'Sora', system-ui, -apple-system, sans-serif;

  --container:1140px;
  --radius:14px;
  --shadow:0 18px 40px -22px rgba(30,58,95,0.35);
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }

a{ color:inherit; text-decoration:none; }

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

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:500;
  line-height:1.15;
  margin:0 0 .5em;
  color:var(--ink);
}

h1 em, h2 em, .logo-text em{
  font-style:italic;
  color:var(--teal);
}

p{ margin:0 0 1em; }

.eyebrow{
  font-family:var(--font-body);
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--gold);
  margin:0 0 12px;
}
.eyebrow.center{ text-align:center; }
.eyebrow-light{ color:#9CC3E8; }

.section-title{
  font-size:clamp(28px,3.4vw,40px);
  max-width:640px;
}
.section-title.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-title.light{ color:var(--white); }

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:999px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:15px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
}
.btn-primary{
  background:var(--teal);
  color:var(--white);
  box-shadow:var(--shadow);
}
.btn-primary:hover{ transform:translateY(-2px); background:var(--teal-dark); }
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--line);
}
.btn-ghost:hover{ border-color:var(--teal); color:var(--teal); }
.btn-small{ padding:10px 20px; font-size:14px; }
.btn-full{ width:100%; }

/* =================== HEADER =================== */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,0.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:16px;
  padding-bottom:16px;
  gap:20px;
}

.header-logo-img{
  height:65px;
  width:65px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-display);
  font-size:19px;
  color:var(--ink);
  white-space:nowrap;
}
.logo-mark{ color:var(--teal); display:inline-flex; }

.main-nav{
  display:flex;
  gap:32px;
  margin-left:auto;
}
.main-nav a{
  font-size:15px;
  font-weight:500;
  color:var(--ink);
  position:relative;
  padding:4px 0;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0; bottom:0;
  width:0%;
  height:2px;
  background:var(--gold);
  transition:width .2s ease;
}
.main-nav a:hover::after{ width:100%; }

.header-cta{ margin-left:24px; flex-shrink:0; }

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:36px;
  height:36px;
  background:none;
  border:none;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  background:var(--ink);
  border-radius:2px;
}

/* =================== LANG SWITCHER =================== */
.lang-switcher{
  position:relative;
  flex-shrink:0;
}
.lang-current{
  display:flex;
  align-items:center;
  gap:6px;
  padding:9px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--white);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
  cursor:pointer;
  transition:border-color .18s ease, color .18s ease;
}
.lang-current svg{ flex-shrink:0; color:var(--gold); }
.lang-current:hover{ border-color:var(--teal); color:var(--teal); }
.lang-caret{ transition:transform .2s ease; flex-shrink:0; }
.lang-switcher.is-open .lang-caret{ transform:rotate(180deg); }

.lang-dropdown{
  position:absolute;
  top:calc(100% + 10px);
  right:0;
  min-width:160px;
  margin:0;
  padding:6px;
  list-style:none;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:12px;
  box-shadow:var(--shadow);
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .18s ease, transform .18s ease, visibility .18s ease;
  z-index:60;
}
.lang-switcher.is-open .lang-dropdown{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.lang-dropdown li{ margin:0; }
.lang-dropdown li + li{ margin-top:2px; }
.lang-dropdown button{
  width:100%;
  text-align:left;
  padding:10px 12px;
  border:none;
  border-radius:8px;
  background:none;
  font-family:var(--font-body);
  font-size:14px;
  color:var(--ink);
  cursor:pointer;
  transition:background .15s ease, color .15s ease;
}
.lang-dropdown button:hover{ background:var(--bg-alt); color:var(--teal); }
.lang-dropdown button.is-active{
  background:var(--bg-alt);
  color:var(--teal);
  font-weight:600;
}

/* =================== HERO =================== */
.hero{ padding:90px 0 70px; overflow:hidden; }
.hero-inner{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  align-items:center;
  gap:48px;
}
.hero-lead{
  max-width:520px;
  font-size:17px;
  color:#3B4E4C;
}
h1{ font-size:clamp(34px,5vw,54px); max-width:640px; }
.hero-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
  margin-top:8px;
}
.hero-art{ display:flex; justify-content:center; }
.route-illustration{ width:100%; max-width:460px; height:auto; }

/* =================== SERVICES =================== */
.services{ padding:80px 0; background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.services-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
  margin-top:48px;
}
.service-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px 28px;
  transition:transform .2s ease, box-shadow .2s ease;
}
.service-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow); }
.service-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:52px;
  height:52px;
  border-radius:50%;
  background:var(--bg-alt);
  color:var(--teal);
  margin-bottom:18px;
}
.service-card h3{ font-size:20px; margin-bottom:10px; }
.service-card p{ font-size:15px; color:#4A5C5A; margin-bottom:0; }

/* =================== ABOUT =================== */
.about{ padding:96px 0; }
.about-inner{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:56px;
  align-items:center;
}
.about-art{ display:flex; justify-content:center; }
.badge-illustration{ width:100%; max-width:340px; height:auto; }
.check-list{
  list-style:none;
  margin:22px 0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.check-list li{
  position:relative;
  padding-left:30px;
  font-size:15.5px;
  color:#2C403E;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0; top:4px;
  width:18px; height:18px;
  border-radius:50%;
  background:var(--teal);
}
.check-list li::after{
  content:"";
  position:absolute;
  left:5px; top:8px;
  width:8px; height:4px;
  border-left:2px solid var(--white);
  border-bottom:2px solid var(--white);
  transform:rotate(-45deg);
}
.disclaimer{
  font-size:13.5px;
  color:#6B7A78;
  border-top:1px solid var(--line);
  padding-top:16px;
  margin-top:8px;
}

/* =================== CONTACT =================== */
.contact{
  background:var(--teal-dark);
  color:var(--white);
  padding:96px 0;
}
.contact-inner{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
}
.contact-lead{ color:#CFE3E0; max-width:440px; }
.contact-info{
  list-style:none;
  margin:28px 0 0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.contact-info li{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:15px;
  color:#E7F0EE;
}
.contact-info svg{ color:var(--gold); flex-shrink:0; }

.contact-form{
  background:var(--bg);
  border-radius:var(--radius);
  padding:32px;
  box-shadow:var(--shadow);
}
.form-row{ margin-bottom:18px; }
.form-row label{
  display:block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.03em;
  color:var(--ink);
  margin-bottom:6px;
}
.form-row input,
.form-row textarea{
  width:100%;
  font-family:var(--font-body);
  font-size:15px;
  padding:12px 14px;
  border-radius:8px;
  border:1px solid var(--line);
  background:var(--white);
  color:var(--ink);
  resize:vertical;
}
.form-row input:focus,
.form-row textarea:focus{
  outline:none;
  border-color:var(--teal);
  box-shadow:0 0 0 3px rgba(59,130,196,0.15);
}
.form-note{
  min-height:20px;
  font-size:13.5px;
  color:var(--teal);
  margin:12px 0 0;
  text-align:center;
}

/* =================== FOOTER =================== */
.site-footer{
  background:var(--ink);
  color:#CFE3E0;
  padding:36px 0;
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:20px;
}
.footer-logo{ color:var(--white); }
.footer-logo-img{height:50px; width:auto;}
.footer-logo .logo-mark{ color:var(--gold); }
.footer-nav{ display:flex; gap:24px; flex-wrap:wrap; }
.footer-nav a{ font-size:14px; color:#CFE3E0; }
.footer-nav a:hover{ color:var(--white); }
.footer-copy{ font-size:13px; color:#8CA6A2; margin:0; }

/* =================== REVEAL ON SCROLL =================== */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s ease, transform .7s ease;
}
[data-reveal].is-visible{
  opacity:1;
  transform:translateY(0);
}
@media (prefers-reduced-motion: reduce){
  [data-reveal]{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* =================== RESPONSIVE =================== */
@media (max-width: 960px){
  .hero-inner, .about-inner, .contact-inner{
    grid-template-columns:1fr;
  }
  .about-art{ order:-1; }
  .services-grid{ grid-template-columns:1fr 1fr; }
}

@media (max-width: 760px){
  .main-nav{
    position:fixed;
    top:68px; left:0; right:0;
    background:var(--bg);
    border-bottom:1px solid var(--line);
    flex-direction:column;
    padding:20px 24px;
    gap:18px;
    transform:translateY(-130%);
    transition:transform .25s ease;
  }
  .main-nav.is-open{ transform:translateY(0); }
  .nav-toggle{ display:flex; }
  .header-cta{ display:none; }
  .services-grid{ grid-template-columns:1fr; }
  .hero{ padding:56px 0 48px; }
  .about, .services, .contact{ padding:64px 0; }
  .lang-current span:not(.lang-caret){ display:none; } /* mobilde sadece bayrak/ikon+kısaltma yerine ikon+ok bırak */
  .lang-current #langCurrentLabel{ display:inline; } /* dil kodu her zaman görünsün */
}

/* =================== RTL DESTEĞİ (Arapça) =================== */
html[dir="rtl"] body{
  font-family:var(--font-body);
}
html[dir="rtl"] .main-nav{
  margin-left:0;
  margin-right:auto;
}
html[dir="rtl"] .header-cta{
  margin-left:0;
  margin-right:24px;
}
html[dir="rtl"] .main-nav a::after{
  left:auto;
  right:0;
}
html[dir="rtl"] .lang-dropdown{
  right:auto;
  left:0;
}
html[dir="rtl"] .lang-dropdown button{
  text-align:right;
}
html[dir="rtl"] .check-list li{
  padding-left:0;
  padding-right:30px;
}
html[dir="rtl"] .check-list li::before{
  left:auto;
  right:0;
}
html[dir="rtl"] .check-list li::after{
  left:auto;
  right:5px;
  border-left:none;
  border-right:2px solid var(--white);
  transform:rotate(45deg);
}
html[dir="rtl"] .disclaimer,
html[dir="rtl"] .form-row label{
  text-align:right;
}
html[dir="rtl"] .contact-info li,
html[dir="rtl"] .service-icon{
  direction:ltr; /* telefon numarası ve ikonlar LTR kalsın */
}
html[dir="rtl"] .contact-info li{
  justify-content:flex-end;
}
@media (max-width: 760px){
  html[dir="rtl"] .main-nav{
    left:0; right:0;
  }
}