:root {
  --color-primary: #0A1F40;
  --color-primary-dark: #071830;
  --color-secondary: #1E3A5F;
  --color-accent: #0099CC;
  --color-accent-dark: #0077A3;
  --color-light: #F8FAFC;
  --color-muted: #6B7C93;
  --color-white: #FFFFFF;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--color-light);
  color: var(--color-muted);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  color: var(--color-primary);
}

a {
  color: var(--color-primary);
}

a:hover {
  color: var(--color-primary-dark);
}

.topbar {
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.9rem;
}

.topbar a {
  color: var(--color-white);
  text-decoration: none;
}

.topbar .container {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-4);
}

.navbar {
  background: var(--color-white);
  padding: 10px 0;
}

.navbar-brand {
  font-weight: 600;
  color: var(--color-primary);
}

.collapse {
  font-weight: 650; /* 500 normal, 600 yarı kalın */
} 


.hero h1, .hero p {
  color: var(--color-white);
}
 
.hero .btn-primary {
  background: var(--color-accent);
  border: none;
}

.hero .btn-primary:hover {
  background: var(--color-accent-dark);
}

.section-padding {
  padding: var(--space-8) var(--space-8);
}

.service-card, .product-card {
  background: var(--color-white);
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  text-align: center;
  padding: var(--space-4);
  transition: transform .2s;
  height: 100%;
}

.service-card:hover, .product-card:hover {
  transform: translateY(-2px);
}
.service-bg-img {
  width: 100%;
  max-height: 550px;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  opacity: 0.6;
}

.services-title {
  margin-bottom: 160px;
}

.bg-services {
  position: relative;
  background: url('../img/sea-bg.jpg') center/cover no-repeat; 
  padding: 100px 0;
}
 
/* açık overlay */
.bg-services::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.23); /* açık deniz overlay */
}

/* tüm içerik overlay üstünde */
.bg-services .container {
  position: relative;
  z-index: 2;
}

.product-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: var(--space-3);
}

.contact-form {
  background: var(--color-white);
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  padding: var(--space-5);
}

.cta {
  background: var(--color-accent);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-6) var(--space-4);
}

.cta h3, .cta p {
  color: var(--color-white);
}

.cta .btn-outline-light {
  border-color: var(--color-white);
  color: var(--color-white);
}

.cta .btn-outline-light:hover {
  background: var(--color-white);
  color: var(--color-accent);
}

footer {
  background: var(--color-primary-dark);
  color: var(--color-white);
  font-size: 0.9rem;
  padding: var(--space-6) var(--space-4);
  text-align: center;
}

footer a {
  color: var(--color-white);
  text-decoration: none;
}

footer a:hover {
  opacity: 0.8;
}

/* Floating WhatsApp */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #25D366;
  color: white;
  padding: 12px 16px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
  z-index: 9999;
}

.whatsapp-float i {
  margin-right: 8px;
}

/* Back to top */
#backToTop {
  position: fixed;
  bottom: 80px;
  right: 20px;
  display: none;
  background: var(--color-primary);
  color: white;
  border: none;
  padding: 10px 14px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 9999;
}

#backToTop:hover {
  background: var(--color-primary-dark);
}

.hero {
  padding: 0;
  background: none;
}

/* resim full ekran gibi */
.hero-image {
  width: 100%;
  height: 100vh; /* ekranın %80’i */
  overflow: hidden;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* yazı resmin altına */
.hero-text {
  padding: 50px 0;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  color: var(--color-primary);
}

.hero p {
  color: var(--color-muted);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-text {
  font-size: 32px;
  font-weight: 600;
  line-height: 1;
  margin: 0;
}

/* ABOUT HERO */
.about-hero {
  background: url("../img/sea-bg.jpg") center/cover no-repeat;
  padding: 120px 0;
  position: relative;
  text-align: center;
}

.about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 31, 64, 0.65);
}

.about-hero .container {
  position: relative;
  z-index: 2;
}

.about-hero h1 {
  color: white;
  font-size: 52px;
  font-weight: 700;
  margin-bottom: 15px;
}

.about-hero p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 18px;
  max-width: 850px;
  margin: 0 auto;
}

/* ABOUT CARD */
.about-card {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.6);
  padding: 35px;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  transition: 0.2s ease;
}

.about-card:hover {
  transform: translateY(-4px);
}

.about-card h4 {
  color: var(--color-primary);
  font-weight: 700;
}

.about-card i {
  color: var(--color-accent);
}

/* QUALITY BOX */
.quality-box {
  background: linear-gradient(135deg, rgba(0, 153, 204, 0.15), rgba(10, 31, 64, 0.08));
  border: 1px solid rgba(0, 153, 204, 0.25);
  border-radius: 14px;
  padding: 50px 30px;
}

.quality-box h3 {
  font-weight: 700;
  color: var(--color-primary);
}

.quality-box i {
  color: var(--color-accent);
}

/* TIMELINE */
.timeline {
  position: relative;
  max-width: 850px;
  margin: 0 auto;
  padding-left: 30px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 0;
  width: 3px;
  height: 100%;
  background: rgba(10, 31, 64, 0.15);
  border-radius: 5px;
}

.timeline-item {
  display: flex;
  gap: 20px;
  margin-bottom: 35px;
  position: relative;
}

.timeline-icon {
  width: 34px;
  height: 34px;
  background: var(--color-accent);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
  position: relative;
  z-index: 2;
}

.timeline-content {
  background: white;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 12px;
  padding: 18px 22px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.06);
  width: 100%;
}

.timeline-content h5 {
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.timeline-content p {
  margin: 0;
  color: var(--color-muted);
}

/* MOBILE */
@media (max-width: 768px) {
  .about-hero h1 {
    font-size: 34px;
  }

  .about-hero {
    padding: 90px 0;
  }

  .about-card {
    padding: 25px;
  }

  .timeline {
    padding-left: 15px;
  }

  .timeline::before {
    left: 8px;
  }

  .timeline-icon {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }
}

@media (max-width: 948px) {
  .hero-image {
    height: 50vh;  /* mobilde küçülür */
  }
}

@media (max-width: 576px) {
  .hero-image {
    height: 35vh;
  }
}

@media (max-width: 396px) {
  .hero-image {
    height: 25vh;
  }
}

/* Topbar + Navbar sabit */
.topbar {
  background: #0b1b2b;
  color: white;
  font-size: 14px;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 2000;
}

.topbar a {
  color: white;
  text-decoration: none;
}

.topbar a:hover {
  text-decoration: underline;
}

/* Navbar topbar altına sabit */
.navbar {
  position: fixed;
  top: 40px; /* topbar yüksekliği */
  width: 100%;
  z-index: 2000;
  background: white;
}

/* Sayfa içeriği navbar altına düşsün */
body {
  padding-top: 100px; /* topbar + navbar toplam yüksekliği */
}