/* ============================================================
   zeniston.com — Custom Stylesheet (Tailwind Complement)
   Marka: #2C8088 Turkuaz × #E8935A Amber-Coral
   ============================================================ */

/* 1. CSS VARIABLES
   ============================================================ */
:root {
  --color-primary:       #2C8088;
  --color-primary-light: #3DAAB3;
  --color-primary-dark:  #1E5F66;
  --color-accent:        #E8935A;
  --color-bg:            #F3F7F8;
  --color-surface:       #FFFFFF;
  --color-footer-bg:     #0D1C22;
  --color-text-head:     #1A2B33;
  --color-text-body:     #3D5260;
  --color-text-muted:    #7A9BAA;
  --color-border:        #D9E8EC;
  --color-shadow:        rgba(44, 128, 136, 0.15);

  --font-heading: 'Plus Jakarta Sans', sans-serif;
  --font-body:    'Inter', sans-serif;

  --t-fast:   0.18s ease;
  --t-normal: 0.3s ease;
  --t-slow:   0.5s cubic-bezier(0.4, 0, 0.2, 1);
}


/* 2. BASE RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { -webkit-font-smoothing: antialiased; }
a    { text-decoration: none; }
img  { display: block; max-width: 100%; }


/* 3. AOS FALLBACK SIGORTASI
   Tailwind CDN dinamik enjeksiyonu AOS'u ezerse diye:
   AOS init olmadıkça hiçbir içerik gizli kalmaz.
   ============================================================ */
html:not(.aos-init) [data-aos] {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}


/* 4. NAVBAR
   ============================================================ */
.navbar {
  transition: background var(--t-normal),
              box-shadow var(--t-normal),
              padding var(--t-normal);
}

/* --- Logo durumları ---
   !important: Tailwind CDN dinamik <style> enjeksiyonunun
   img { display: block } reset'ini ezmesini engeller.
   ---------------------------------------------------------- */
.navbar .logo-dark  { display: none  !important; }
.navbar .logo-light { display: block !important; }

.navbar.scrolled .logo-dark  { display: block !important; }
.navbar.scrolled .logo-light { display: none  !important; }

/* --- Desktop nav links (transparent state) --- */
.nav-link {
  color: rgba(255, 255, 255, 0.88);
  position: relative;
  padding-bottom: 3px;
  transition: color var(--t-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary-light);
  border-radius: 1px;
  transition: width var(--t-normal);
}

.nav-link:hover::after { width: 100%; }

/* --- Contact CTA button (transparent state) --- */
.nav-cta-btn {
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.12);
  transition: all var(--t-normal);
}

.nav-cta-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

/* --- Scrolled state: solid glass navbar --- */
.navbar.scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 24px rgba(26, 43, 51, 0.09);
}

.navbar.scrolled .nav-link {
  color: var(--color-text-head);
}

.navbar.scrolled .nav-link::after {
  background: var(--color-primary);
}

/* Aktif sayfa linki — her iki navbar durumunda da altı çizili */
.nav-link-active::after             { width: 100% !important; }
.navbar.scrolled .nav-link-active   { color: var(--color-primary) !important; font-weight: 600; }

.navbar.scrolled .nav-cta-btn {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.navbar.scrolled .nav-cta-btn:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

/* --- Hamburger button --- */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transition: all var(--t-normal);
  transform-origin: center;
}

.navbar.scrolled .hamburger span { background: var(--color-text-head); }

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Mobile dropdown menu --- */
.mobile-menu {
  background: #fff;
  border-top: 1px solid var(--color-border);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--t-slow);
}

.mobile-menu.open { max-height: 520px; }

.mob-link {
  color: var(--color-text-head);
  border-bottom: 1px solid #f0f4f5;
  transition: color var(--t-fast), background var(--t-fast);
}

.mob-link:hover {
  color: var(--color-primary);
  background: #f8fdfd;
}


/* 4. HERO SECTION
   ============================================================ */
.hero-section { min-height: 100svh; }

.hero-bg {
  background-size: cover;
  background-position: center;
  transform: scale(1.06);
  transition: transform 9s ease-out;
}

.hero-section.is-loaded .hero-bg { transform: scale(1); }

.hero-overlay {
  background: linear-gradient(
    140deg,
    rgba(13, 28, 34, 0.88) 0%,
    rgba(30, 95, 102, 0.50) 55%,
    rgba(13, 28, 34, 0.75) 100%
  );
}

/* Eyebrow tag */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary-light);
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 1.75rem;
  height: 1.5px;
  background: currentColor;
  opacity: 0.7;
}

/* Hero CTA buttons */
.hero-btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 18px rgba(44, 128, 136, 0.35);
  transition: all var(--t-normal);
}

.hero-btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(44, 128, 136, 0.45);
}

.hero-btn-ghost {
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  transition: all var(--t-normal);
}

.hero-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.7);
}

/* Stats cards */
.stat-card {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 1.25rem;
  padding: 1.5rem 2.25rem;
  min-width: 165px;
  transition: transform var(--t-normal), background var(--t-normal);
}

.stat-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.13);
}

.stat-num {
  font-family: var(--font-heading);
  font-size: 2.375rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 0.375rem;
}

.stat-num span { color: var(--color-primary-light); }

.stat-label {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.58);
  letter-spacing: 0.05em;
}

/* Scroll hint */
.scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 44px;
  background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.5));
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50%       { opacity: 1; }
}


/* 5. SERVICES SECTION
   ============================================================ */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.section-eyebrow::before,
.section-eyebrow::after {
  content: '';
  display: inline-block;
  width: 1.75rem;
  height: 1.5px;
  background: currentColor;
  opacity: 0.5;
}

/* Service card */
.service-card {
  border: 1px solid var(--color-border);
  transition: transform var(--t-normal), box-shadow var(--t-normal), border-color var(--t-normal);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(44, 128, 136, 0.18);
  border-color: var(--color-primary-light);
}

.service-card:hover h3 { color: var(--color-primary); }

.service-thumb {
  height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--t-slow);
}

.service-card:hover .service-thumb { transform: scale(1.04); }

.service-thumb-overlay {
  background: linear-gradient(to top, rgba(13, 28, 34, 0.65), transparent 55%);
}

.service-icon {
  position: absolute;
  bottom: 1rem;
  left: 1.25rem;
  z-index: 1;
  width: 42px;
  height: 42px;
  background: var(--color-primary);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 4px 14px rgba(44, 128, 136, 0.42);
}


/* 6. VISION / QUOTE
   ============================================================ */
.vision-quote-mark {
  font-family: 'Georgia', serif;
  font-size: 7rem;
  line-height: 0.6;
  color: var(--color-primary);
  opacity: 0.18;
  display: block;
}

.vision-cite {
  font-style: normal;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.vision-cite::before {
  content: '';
  display: block;
  width: 2rem;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  flex-shrink: 0;
}

.vision-link {
  color: var(--color-primary);
  font-size: 0.9375rem;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 2px;
  transition: all var(--t-fast);
}

.vision-link:hover {
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.vision-img-frame {
  border: 2px solid var(--color-primary);
  opacity: 0.2;
}


/* 7. PARTNERS SWIPER
   ============================================================ */
.partner-slide {
  display: flex;
  align-items: center;
  justify-content: center;
}

.partner-box {
  width: 100%;
  height: 68px;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: border-color var(--t-fast), color var(--t-fast);
}

.partner-slide:hover .partner-box {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}


/* 8. CTA BAND
   ============================================================ */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

.cta-btn {
  background: #fff;
  color: var(--color-primary-dark);
  font-size: 0.9375rem;
  padding: 1rem 2.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
  transition: all var(--t-normal);
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.25);
}


/* 9. FOOTER
   ============================================================ */
.footer-heading {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 1.375rem;
}

.footer-link {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.55);
  display: block;
  transition: color var(--t-fast);
}

.footer-link:hover { color: var(--color-primary-light); }

.social-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.62);
  transition: all var(--t-normal);
}

.social-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  transform: translateY(-3px);
}


/* 10. INNER PAGE HERO (Tüm iç sayfalarda ortak)
   ============================================================ */
.inner-hero {
  min-height: 60vh;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

@media (max-width: 768px) {
  .inner-hero { min-height: 50vh; background-attachment: scroll; }
}


/* 11. RESPONSIVE TWEAKS
   ============================================================ */
@media (max-width: 768px) {
  .stat-card { min-width: 130px; }
}

@media (max-width: 480px) {
  .hero-btn-primary,
  .hero-btn-ghost {
    width: 100%;
    justify-content: center;
  }
}