/**
 * site-nav – Responsive, erişilebilir, sticky header
 * prefix: site-nav__
 * Breakpoint: 1024px
 */
:root {
  --nav-h: 72px;
  --nav-max: 1180px;

  --nav-bg: rgba(255,255,255,0.92);
  --nav-border: rgba(0,0,0,0.08);
  --nav-text: #0f172a;
  --nav-muted: rgba(15,23,42,0.72);
  --nav-accent: #b8860b;

  --nav-cta-bg: #16a34a;
  --nav-cta-text: #fff;
  --nav-cta2-bg: transparent;
  --nav-cta2-border: rgba(15,23,42,0.2);
  --nav-cta2-text: var(--nav-text);

  --nav-radius: 14px;
  --nav-shadow: 0 10px 30px rgba(0,0,0,0.08);
  --nav-drop-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

.site-nav * { box-sizing: border-box; }
.site-nav a { text-decoration: none; color: inherit; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 999;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  box-shadow: 0 2px 16px rgba(0,0,0,0.04);
}

.site-nav__inner {
  height: var(--nav-h);
  max-width: var(--nav-max);
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* Brand */
.site-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex-shrink: 0;
}
.site-nav__logo {
  height: 40px;
  width: auto;
  object-fit: contain;
  transition: transform .15s ease;
}
.site-nav__brand:hover .site-nav__logo { transform: scale(1.04); }

/* Desktop Menu */
.site-nav__menu {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}
.site-nav__link {
  font: 500 14px/1.2 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--nav-muted);
  padding: 10px 12px;
  border-radius: 10px;
  transition: background .15s ease, color .15s ease, transform .15s ease;
  white-space: nowrap;
}
.site-nav__link:hover {
  background: rgba(15,23,42,0.06);
  color: var(--nav-text);
}
.site-nav__link:active { transform: translateY(1px); }

/* Desktop Dropdown */
.site-nav__dropdown {
  position: relative;
}
.site-nav__dropbtn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font: 500 14px/1.2 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--nav-muted);
  padding: 10px 12px;
  border: none;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, transform .15s ease;
  white-space: nowrap;
}
.site-nav__dropbtn:hover {
  background: rgba(15,23,42,0.06);
  color: var(--nav-text);
}
.site-nav__dropbtn:active { transform: translateY(1px); }
.site-nav__dropbtn[aria-expanded="true"] {
  background: rgba(15,23,42,0.06);
  color: var(--nav-text);
}
.site-nav__chev {
  font-size: 0.65em;
  opacity: .85;
  transition: transform .2s ease;
}
.site-nav__dropbtn[aria-expanded="true"] .site-nav__chev { transform: rotate(180deg); }

.site-nav__dropmenu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 220px;
  max-width: 320px;
  padding: 8px;
  background: rgba(255,255,255,0.98);
  border: 1px solid var(--nav-border);
  border-radius: var(--nav-radius);
  box-shadow: var(--nav-drop-shadow);
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s ease, visibility .2s ease, transform .2s ease;
  z-index: 100;
}
.site-nav__dropdown [aria-expanded="true"] + .site-nav__dropmenu,
.site-nav__dropmenu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
}
.site-nav__droplink {
  display: block;
  padding: 10px 12px;
  font: 500 13px/1.2 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--nav-text);
  border-radius: 8px;
  border-left: 3px solid transparent;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
  white-space: nowrap;
}
.site-nav__droplink:hover {
  background: rgba(184,134,11,0.1);
  color: var(--nav-accent);
  border-left-color: var(--nav-accent);
}

/* Actions */
.site-nav__actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  background: var(--nav-cta-bg);
  color: var(--nav-cta-text);
  font: 600 14px/1 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  box-shadow: 0 4px 14px rgba(22, 163, 74, 0.28);
  transition: filter .15s ease, transform .15s ease, box-shadow .15s ease;
  white-space: nowrap;
}
.site-nav__cta:hover { filter: brightness(1.08); box-shadow: 0 6px 18px rgba(22, 163, 74, 0.35); }
.site-nav__cta:active { transform: translateY(1px); }

.site-nav__cta--secondary {
  background: var(--nav-cta2-bg);
  color: var(--nav-cta2-text);
  border: 1px solid var(--nav-cta2-border);
  box-shadow: none;
}
.site-nav__cta--secondary:hover { border-color: var(--nav-accent); color: var(--nav-accent); }

/* Hamburger – sadece mobilde görünsün */
.site-nav__toggle {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--nav-border);
  background: rgba(255,255,255,0.6);
  display: none !important;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .15s ease;
}
.site-nav__toggle:hover { background: rgba(15,23,42,0.05); }
.site-nav__burger {
  width: 18px;
  height: 2px;
  background: var(--nav-text);
  position: relative;
  display: block;
  border-radius: 999px;
  transition: background .18s ease;
}
.site-nav__burger::before,
.site-nav__burger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--nav-text);
  border-radius: 999px;
  transition: transform .18s ease, top .18s ease, opacity .18s ease;
}
.site-nav__burger::before { top: -6px; }
.site-nav__burger::after { top: 6px; }

/* Mobile panel */
.site-nav__mobile {
  max-width: var(--nav-max);
  margin: 0 auto;
  padding: 0 16px 14px 16px;
}
.site-nav__mobile[hidden] { display: none !important; }
.site-nav__mobile-menu {
  border: 1px solid var(--nav-border);
  border-radius: var(--nav-radius);
  box-shadow: var(--nav-shadow);
  background: rgba(255,255,255,0.98);
  overflow-y: auto;
  overflow-x: hidden;
  max-height: calc(100vh - 130px);
  -webkit-overflow-scrolling: touch;
}
.site-nav__mobile-link {
  display: block;
  padding: 14px 14px;
  font: 600 14px/1.1 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--nav-text);
  border-bottom: 1px solid var(--nav-border);
  transition: background .15s ease;
}
.site-nav__mobile-link:last-of-type { border-bottom: none; }
.site-nav__mobile-link:hover { background: rgba(15,23,42,0.06); }

/* Mobile accordion (Projeler / Kampanyalar) */
.site-nav__mobile-dropdown { border-bottom: 1px solid var(--nav-border); }
.site-nav__mobile-dropbtn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 14px;
  font: 600 14px/1.1 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--nav-text);
  border: none;
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: background .15s ease;
}
.site-nav__mobile-dropbtn:hover { background: rgba(15,23,42,0.06); }
.site-nav__mobile-dropbtn .site-nav__chev { transition: transform .2s ease; }
.site-nav__mobile-dropbtn[aria-expanded="true"] .site-nav__chev { transform: rotate(180deg); }
.site-nav__mobile-sublinks {
  display: none;
  padding: 4px 0 8px 0;
  border-top: 1px solid var(--nav-border);
}
.site-nav__mobile-dropdown.is-open .site-nav__mobile-sublinks { display: block; }
.site-nav__mobile-sublink {
  display: block;
  padding: 10px 14px 10px 24px;
  font: 500 13px/1.2 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--nav-muted);
  transition: color .15s ease, background .15s ease;
}
.site-nav__mobile-sublink:hover { color: var(--nav-accent); background: rgba(184,134,11,0.06); }

.site-nav__mobile-cta {
  display: block;
  padding: 14px 14px;
  font: 700 14px/1.1 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--nav-cta-bg);
  color: var(--nav-cta-text);
  text-align: center;
  transition: filter .15s ease;
}
.site-nav__mobile-cta:hover { filter: brightness(1.05); }
.site-nav__mobile-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 14px;
  border-top: 1px solid var(--nav-border);
}
.site-nav__mobile-actions .site-nav__cta,
.site-nav__mobile-actions .site-nav__cta--secondary { justify-content: center; width: 100%; }

/* Open state: burger → X */
.site-nav.is-open .site-nav__burger { background: transparent; }
.site-nav.is-open .site-nav__burger::before { top: 0; transform: rotate(45deg); }
.site-nav.is-open .site-nav__burger::after { top: 0; transform: rotate(-45deg); }

/* Responsive */
@media (max-width: 1023px) {
  .site-nav__menu { display: none; }
  .site-nav__actions .site-nav__cta,
  .site-nav__actions .site-nav__cta--secondary { display: none; }
  .site-nav__toggle { display: inline-flex !important; }
}
@media (min-width: 1024px) {
  .site-nav__mobile { display: none !important; }
  .site-nav__dropbtn .site-nav__chev { display: none; }
  .site-nav__toggle { display: none !important; }
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .site-nav__link,
  .site-nav__dropbtn,
  .site-nav__cta,
  .site-nav__cta--secondary,
  .site-nav__burger,
  .site-nav__burger::before,
  .site-nav__burger::after,
  .site-nav__chev,
  .site-nav__dropmenu,
  .site-nav__droplink,
  .site-nav__mobile-sublink,
  .site-nav__logo { transition: none !important; }
}