/* NDSTEK – ana sayfa stilleri */

@font-face {
  font-family: "NDS Tahoma";
  src: local("Tahoma"), url("../fonts/tahoma.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "NDS Tahoma";
  src: local("Tahoma Bold"), local("Tahoma-Bold"), url("../fonts/tahoma-bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --lacivert: #0B2540;
  --lacivert-koyu: #071B30;
  --mavi: #1270FF;
  --mavi-acik: #4C9AFF;
  --zemin: #F3F6FA;
  --metin: #33475E;
  --metin-soluk: #4A5B70;
  --cizgi: #D3DCE7;
  --koyu-cizgi: #284563;
  --koyu-metin: #B7C4D6;
  --font: "NDS Tahoma", Tahoma, Verdana, "DejaVu Sans", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--lacivert);
  background: #FFFFFF;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, dl, dd { margin: 0; }

a { color: var(--mavi); }
a:hover { color: var(--lacivert); }
a:focus-visible { outline: 3px solid var(--mavi-acik); outline-offset: 3px; border-radius: 4px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

/* İmleç animasyonu */
@keyframes nds-blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
.blink { animation: nds-blink 1.06s steps(1, end) infinite; }

/* Logo */
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--lacivert); }
.logo:hover { color: var(--lacivert); }
.logo-word { font-size: 26px; line-height: 1; letter-spacing: -0.01em; }
.logo-word b { font-weight: 700; }

/* Butonlar */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0 26px; border-radius: 12px;
  font-size: 17px; font-weight: 700; text-decoration: none;
}
.btn-sm { min-height: 44px; padding: 0 20px; border-radius: 10px; font-size: 16px; }
.btn-lacivert { background: var(--lacivert); color: #FFFFFF; }
.btn-lacivert:hover { background: #12355A; color: #FFFFFF; }
.btn-beyaz { background: #FFFFFF; color: var(--lacivert); }
.btn-beyaz:hover { background: #E6EEFC; color: var(--lacivert); }
.btn-cerceve { border: 1px solid #4C6A8C; color: #FFFFFF; }
.btn-cerceve:hover { border-color: #FFFFFF; color: #FFFFFF; }
.btn-mavi { background: var(--mavi); color: #FFFFFF; }
.btn-mavi:hover { background: #0F5FD9; color: #FFFFFF; }

/* Üst menü */
.site-header { background: #FFFFFF; border-bottom: 1px solid #E3E9F0; }
.site-header .container {
  padding-top: 18px; padding-bottom: 18px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 32px;
}
.main-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 28px; font-size: 16px; }
.main-nav .nav-link { color: var(--metin); text-decoration: none; }
.main-nav .nav-link:hover { color: var(--mavi); }

/* Bölüm başlıkları */
.section-title {
  font-size: clamp(30px, 3.4vw, 44px); line-height: 1.15;
  font-weight: 700; letter-spacing: -0.015em;
}

/* Hero */
.hero { background: var(--lacivert); color: #FFFFFF; }
.hero .container { padding-top: 112px; }
.hero h1 {
  max-width: 17ch;
  font-size: clamp(42px, 6.4vw, 92px); line-height: 1.04;
  font-weight: 700; letter-spacing: -0.02em;
}
.hero h1 .prompt, .hero h1 .blink { color: var(--mavi-acik); }
.hero-lead { margin-top: 40px; max-width: 60ch; font-size: 20px; line-height: 1.6; color: #C3CFDE; }
.hero-actions { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 16px; }
.hero-areas {
  margin: 104px 0 0; padding: 0; list-style: none;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  border-top: 1px solid var(--koyu-cizgi);
}
.hero-areas li { padding: 28px 24px 36px 0; font-size: 18px; font-weight: 700; }

/* Hakkımızda */
.about .container {
  padding-top: 120px; padding-bottom: 120px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 48px 80px; align-items: start;
}
.about-text { display: flex; flex-direction: column; gap: 24px; font-size: 18px; line-height: 1.7; color: var(--metin); }

/* Hizmetler */
.services { background: var(--zemin); }
.services .container { padding-top: 120px; padding-bottom: 120px; }
.services .section-title { margin-bottom: 56px; }
.service-list { margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--cizgi); }
.service {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px 64px; padding: 36px 0; border-top: 1px solid var(--cizgi);
}
.service h3 { display: flex; align-items: center; gap: 14px; font-size: 26px; font-weight: 700; }
.service h3 svg { flex-shrink: 0; }
.service p { max-width: 58ch; font-size: 18px; line-height: 1.65; color: var(--metin); }

/* Yaklaşım */
.approach { background: var(--lacivert); color: #FFFFFF; }
.approach .container { padding-top: 128px; padding-bottom: 128px; }
.approach-quote {
  max-width: 32ch; font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.3; font-weight: 400; letter-spacing: -0.01em;
}
.values {
  margin-top: 88px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 40px 48px;
}
.value { padding-top: 24px; border-top: 1px solid var(--koyu-cizgi); }
.value h3 { margin-bottom: 12px; font-size: 22px; font-weight: 700; }
.value p { font-size: 17px; line-height: 1.65; color: var(--koyu-metin); }

/* İletişim */
.contact .container {
  padding-top: 120px; padding-bottom: 120px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 48px 80px; align-items: start;
}
.contact-intro p { margin-top: 20px; max-width: 46ch; font-size: 18px; line-height: 1.7; color: var(--metin); }
.contact-intro .btn { margin-top: 32px; }
.contact-list {
  display: grid; grid-template-columns: minmax(96px, auto) 1fr;
  gap: 20px 32px; font-size: 18px; line-height: 1.5;
}
.contact-list dt { color: var(--metin-soluk); }
.contact-list dd { font-weight: 700; }
.contact-list dd.address { font-weight: 400; }

/* Alt bilgi */
.site-footer { background: var(--lacivert-koyu); color: #FFFFFF; }
.site-footer .container { padding-top: 64px; padding-bottom: 40px; display: flex; flex-direction: column; gap: 48px; }
.footer-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 32px; }
.footer-logo { display: flex; align-items: center; gap: 18px; }
.footer-logo-text { display: flex; flex-direction: column; gap: 8px; }
.footer-logo-text .logo-word { font-size: 36px; }
.tagline { font-size: 11px; letter-spacing: 0.3em; color: var(--koyu-metin); }
.footer-nav { display: flex; flex-wrap: wrap; gap: 12px 28px; font-size: 16px; }
.footer-nav a, .footer-bottom a { color: var(--koyu-metin); text-decoration: none; }
.footer-nav a:hover, .footer-bottom a:hover { color: #FFFFFF; }
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px;
  padding-top: 24px; border-top: 1px solid #1E3A58; font-size: 14px; color: #9FB0C5;
}

/* Mobil */
@media (max-width: 600px) {
  .container { padding: 0 20px; }
  .hero .container { padding-top: 72px; }
  .hero-areas { margin-top: 72px; }
  .hero-areas li { padding: 18px 0; border-bottom: 1px solid var(--koyu-cizgi); }
  .hero-areas li:last-child { border-bottom: 0; padding-bottom: 32px; }
  .about .container, .services .container, .contact .container { padding-top: 80px; padding-bottom: 80px; }
  .approach .container { padding-top: 88px; padding-bottom: 88px; }
  .service h3 { font-size: 22px; }
  .contact-list { grid-template-columns: 1fr; gap: 4px; }
  .contact-list dd { margin-bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blink { animation: none; }
}

/* Alt sayfalar (hakkımızda, yasal metinler) */
.page-hero { background: var(--lacivert); color: #FFFFFF; }
.page-hero .container { padding-top: 72px; padding-bottom: 72px; }
.page-hero h1 { font-size: clamp(34px, 4.6vw, 60px); line-height: 1.1; font-weight: 700; letter-spacing: -0.02em; }
.page-lead { margin-top: 20px; max-width: 60ch; font-size: 19px; line-height: 1.6; color: #C3CFDE; }
.doc .container { padding-top: 72px; padding-bottom: 96px; }
.doc-body { max-width: 78ch; font-size: 17px; line-height: 1.75; color: var(--metin); }
.doc-body h2 { margin: 48px 0 14px; font-size: 24px; line-height: 1.25; color: var(--lacivert); }
.doc-body h2:first-child, .doc-body .doc-date + h2 { margin-top: 0; }
.doc-body h3 { margin: 24px 0 8px; font-size: 19px; color: var(--lacivert); }
.doc-body p { margin-bottom: 14px; }
.doc-body ul { margin: 0 0 14px; padding-left: 22px; }
.doc-body li { margin-bottom: 8px; }
.doc-date { font-size: 14px; color: var(--metin-soluk); }
.info-list { display: grid; grid-template-columns: minmax(96px, auto) 1fr; gap: 10px 24px; margin: 8px 0 16px; padding: 20px 24px; background: var(--zemin); border-radius: 12px; font-size: 16px; line-height: 1.5; }
.info-list dt { color: var(--metin-soluk); }
.info-list dd { margin: 0; color: var(--lacivert); }

/* Alt bilgi: yasal bağlantılar ve ödeme logoları */
.footer-legal { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px 32px; padding-top: 32px; border-top: 1px solid #1E3A58; }
.pay-band { background: #FFFFFF; border-radius: 10px; padding: 12px 16px; line-height: 0; }
.pay-band img { display: block; width: 100%; max-width: 429px; height: auto; }

@media (max-width: 600px) {
  .page-hero .container { padding-top: 48px; padding-bottom: 48px; }
  .doc .container { padding-top: 48px; padding-bottom: 64px; }
  .info-list { grid-template-columns: 1fr; gap: 2px; }
  .info-list dd { margin-bottom: 10px; }
}