/* Ozn Akaryakıt - Kurumsal Tema */
/* Tipografi ve Renk Değişkenleri */
:root {
  --color-primary: #0a3d62; /* lacivert */
  --color-primary-600: #0b4a78;
  --color-accent: #ff7a00; /* turuncu */
  --color-text: #1b1f24;
  --color-muted: #667085;
  --color-border: #e4e7ec;
  --bg: #ffffff;
  --bg-alt: #f6f8fb;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.08);
  --shadow-lg: 0 16px 40px rgba(16, 24, 40, 0.12);
}

/* Temel Ayarlar */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--color-text);
  background: var(--bg);
  line-height: 1.6;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Üst Menü */
.header {
  position: sticky;
  top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--color-border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand {
  display: inline-flex; align-items: center; gap: 12px;
  font-weight: 700; font-size: 18px;
}
.brand img { width: 36px; height: 36px; }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--color-muted); font-weight: 500; }
.nav-links a.active, .nav-links a:hover { color: var(--color-primary); }
.cta {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--color-primary);
  color: #fff; padding: 10px 16px; border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}
.cta:hover { background: var(--color-primary-600); }

.menu-btn { display: none; }

/* Hero Bölümü */
.hero {
  padding: 72px 0 32px;
  background: linear-gradient(180deg, #f9fafb 0%, #ffffff 100%);
}
.hero-grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center;
}
.eyebrow { color: var(--color-accent); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.hero h1 { font-size: 44px; line-height: 1.15; margin: 12px 0 16px; }
.hero p { color: var(--color-muted); font-size: 18px; }
.hero-cta { display: flex; gap: 12px; margin-top: 20px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--color-primary);
  color: #fff; padding: 12px 18px; border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm); font-weight: 600;
}
.btn.secondary { background: #fff; color: var(--color-primary); border: 1px solid var(--color-border); }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }

.hero-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: 20px; box-shadow: var(--shadow-md);
}
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 14px; }
.stat { background: var(--bg-alt); padding: 14px; border-radius: 12px; text-align: center; }
.stat strong { display: block; font-size: 22px; }
.stat span { color: var(--color-muted); font-size: 13px; }

/* Özellikler */
.features { padding: 56px 0; background: var(--bg); }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 16px; box-shadow: var(--shadow-sm); }
.feature h3 { margin: 10px 0 6px; font-size: 18px; }
.feature p { color: var(--color-muted); font-size: 14px; }

/* İçerik Bölümleri */
.section { padding: 64px 0; }
.section h2 { font-size: 32px; margin: 0 0 12px; }
.section p.lead { color: var(--color-muted); margin-bottom: 24px; }

/* Kart Izgaralar */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 18px; box-shadow: var(--shadow-sm); }
.card h3 { margin: 8px 0 6px; }
.card p { color: var(--color-muted); font-size: 14px; }

/* İletişim */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
form input, form select, form textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--color-border); border-radius: 10px; font: inherit; }
form label { font-weight: 600; font-size: 14px; display: block; margin: 12px 0 6px; }
form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
form .actions { display: flex; justify-content: flex-end; margin-top: 10px; }
.note { color: var(--color-muted); font-size: 13px; }

/* İletişim Kartları (yeni) */
.contact-cards { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 24px; }
.info-card { background: #fff; border: 1px solid var(--color-border); border-radius: 16px; padding: 22px; box-shadow: var(--shadow-sm); }
.info-card h3 { margin: 0 0 10px; }
.info-item { display: flex; gap: 12px; align-items: flex-start; padding: 10px 0; border-top: 1px dashed #eef1f5; }
.info-item:first-of-type { border-top: 0; }
.info-item svg { width: 20px; height: 20px; flex: 0 0 20px; color: var(--color-primary); }
.cta-row { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }

.contact-hero { background: linear-gradient(135deg, #0a3d62 0%, #0b4a78 60%); color: #e9eef5; border: 0; box-shadow: var(--shadow-md); }
.contact-hero h3 { color: #fff; }
.contact-hero p { color: #d7e3f0; }
.ticks { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 8px; }
.ticks li { position: relative; padding-left: 22px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 8px; width: 10px; height: 10px; border-radius: 2px; background: #ff7a00; box-shadow: 0 0 0 2px rgba(255,255,255,.35); }

/* Altlık */
.footer { background: var(--color-primary); color: #e9eef5; }
.footer a { color: #e9eef5; }
.footer .top { padding: 36px 0; display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 20px; }
.footer .brandline { display: flex; gap: 12px; align-items: center; }
.footer .brandline img { filter: brightness(0) invert(1); }
.footer .bottom { border-top: 1px solid rgba(255,255,255,.15); padding: 14px 0; font-size: 13px; color: #c6d4e5; }

/* Slider */
.slider { position: relative; overflow: hidden; border-radius: 14px; }
.slider .slides { position: relative; }
.slider .slide { position: absolute; inset: 0; opacity: 0; transition: opacity .6s ease; }
.slider .slide.active { position: relative; opacity: 1; }
.slider .slide img { width: 100%; height: 320px; object-fit: cover; border-radius: 12px; display: block; }
.slider .slide .caption { position: absolute; left: 16px; bottom: 16px; background: rgba(10,61,98,.75); color: #fff; padding: 10px 12px; border-radius: 10px; font-size: 14px; box-shadow: var(--shadow-sm); }
.slider .nav { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255,255,255,.8); border: 1px solid var(--color-border); width: 36px; height: 36px; border-radius: 999px; display: grid; place-items: center; box-shadow: var(--shadow-sm); cursor: pointer; }
.slider .nav:hover { background: #fff; }
.slider .nav.prev { left: 8px; }
.slider .nav.next { right: 8px; }
.slider .dots { position: absolute; left: 0; right: 0; bottom: 8px; display: flex; gap: 6px; justify-content: center; }
.slider .dot { width: 8px; height: 8px; border-radius: 999px; background: rgba(255,255,255,.6); border: 1px solid rgba(0,0,0,.08); }
.slider .dot.active { background: #fff; }

/* Sticky footer */
html, body { height: 100%; }
body { display: flex; min-height: 100vh; flex-direction: column; }
main { flex: 1 0 auto; }

/* Duyarlılık */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .menu-btn { display: inline-flex; }
  .stats { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  form .row { grid-template-columns: 1fr; }
  .slider .slide img { height: 240px; }
}