/* ================================================================
   GLOBAL NAV — nav.css
   ================================================================ */

.site-nav {
  position: fixed;
  top: 58px;
  left: 60px;
  right: 60px;
  z-index: 9000;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  border: 2px solid var(--nav-border, rgba(255, 255, 255, 0.18));
  border-radius: 16px;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition:
    background 0.45s ease,
    border-color 0.45s ease,
    backdrop-filter 0.45s ease;
  box-sizing: border-box;
}

.site-nav.is-scrolled {
  background: var(--nav-bg-scrolled);
  border-color: var(--nav-border-scrolled, rgba(255, 255, 255, 0.25));
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ── LEFT ────────────────────────────────────────────────────── */
.nav-left {
  flex: 1;
  display: flex;
  align-items: center;
  min-width: 0;
}

.nav-left-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--nav-fg, rgba(255, 255, 255, 0.42));
  text-decoration: none;
  white-space: nowrap;
  cursor: default;
  transition: color 0.25s;
  min-width: 9ch;
  display: inline-block;
}

a.nav-left-text { cursor: pointer; }
a.nav-left-text:hover { color: var(--nav-fg-hover, #fff); }

/* ── CENTER — ICONS ──────────────────────────────────────────── */
.nav-icons {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 28px;
  pointer-events: none;
}

.nav-icon {
  width: 20px;
  height: 20px;
  color: var(--nav-fg-icon, var(--nav-fg, rgba(255, 255, 255, 0.55)));
  flex-shrink: 0;
  opacity: 1;
}

.nav-icon svg {
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.55;
}

.nav-icon:nth-child(2) svg {
  opacity: 0.88;
  transform: scale(1.12);
  transform-origin: center;
}

/* Sequential icon swap animations */
@keyframes navIconOut {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-8px); }
}
@keyframes navIconIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.nav-icon.is-out svg { animation: navIconOut 150ms cubic-bezier(0.4, 0, 1, 1) forwards; }
.nav-icon.is-in svg  { animation: navIconIn  200ms cubic-bezier(0, 0, 0.2, 1) forwards; }

/* ── RIGHT — LINKS ───────────────────────────────────────────── */
.nav-links {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 28px;
}

.nav-link {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--nav-fg, rgba(255, 255, 255, 0.42));
  text-decoration: none;
  transition: color 0.25s;
  position: relative;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}

.nav-link:hover { color: var(--nav-fg-hover, #fff); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link.is-active { color: var(--nav-fg-active, #fff); }
.nav-link.is-active::after { transform: scaleX(1); opacity: 0.55; }

/* ── PAGE-SPECIFIC COLORS ────────────────────────────────────── */

/* Index */
body.page-index .site-nav {
  --nav-border:          rgba(255, 255, 255, 0.14);
  --nav-bg-scrolled:     rgba(26, 22, 20, 0.90);
  --nav-border-scrolled: rgba(255, 255, 255, 0.20);
  --nav-fg:              rgba(255, 255, 255, 0.42);
  --nav-fg-hover:        #fff;
  --nav-fg-active:       #fff;
}

/* Projects */
body.page-uxui .site-nav {
  --nav-border:          rgba(10, 25, 41, 0.38);
  --nav-bg-scrolled:     rgba(239, 68, 68, 0.92);
  --nav-border-scrolled: rgba(10, 25, 41, 0.45);
  --nav-fg:              rgba(10, 25, 41, 0.65);
  --nav-fg-icon:         rgba(10, 25, 41, 0.65);
  --nav-fg-hover:        #0a1929;
  --nav-fg-active:       #0a1929;
}

/* Artworks — text/icons/border in dark navy (#0a1929), bg unchanged */
body.page-artworks .site-nav {
  --nav-border:          rgba(10, 25, 41, 0.38);
  --nav-bg-scrolled:     rgba(29, 78, 216, 0.92);
  --nav-border-scrolled: rgba(10, 25, 41, 0.45);
  --nav-fg:              rgba(10, 25, 41, 0.65);
  --nav-fg-icon:         rgba(10, 25, 41, 0.65);
  --nav-fg-hover:        #0a1929;
  --nav-fg-active:       #0a1929;
}

/* Project detail — dark */
body.page-detail .site-nav {
  --nav-border:          rgba(255, 255, 255, 0.14);
  --nav-bg-scrolled:     rgba(12, 10, 8, 0.90);
  --nav-border-scrolled: rgba(255, 255, 255, 0.20);
  --nav-fg:              rgba(255, 255, 255, 0.68);
  --nav-fg-hover:        #fff;
  --nav-fg-active:       #fff;
}

/* Contact */
body.page-contact .site-nav {
  --nav-border:          rgba(255, 255, 255, 0.14);
  --nav-bg-scrolled:     rgba(10, 8, 20, 0.90);
  --nav-border-scrolled: rgba(255, 255, 255, 0.20);
  --nav-fg:              rgba(255, 255, 255, 0.42);
  --nav-fg-hover:        #fff;
  --nav-fg-active:       #fff;
}

/* ── MOBILE ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .site-nav {
    top: 18px;
    left: 20px;
    right: 20px;
    height: 46px;
    padding: 0 14px;
    gap: 0;
  }

  /* Hide center icons — not enough room */
  .nav-icons { display: none; }

  .nav-left-text {
    font-size: 0.60rem;
    letter-spacing: 0.11em;
    min-width: 0;
  }

  .nav-links { gap: 14px; }
  .nav-link  { font-size: 0.58rem; letter-spacing: 0.10em; }
}

@media (max-width: 400px) {
  .site-nav {
    left: 12px;
    right: 12px;
    padding: 0 12px;
  }
  .nav-left-text { display: none; }
  .nav-links { justify-content: center; gap: 16px; }
}

/* ── HAMBURGER BUTTON ────────────────────────────────────── */
@keyframes burgerWave {
  0%, 100% { transform: scaleX(1);    opacity: 0.55; }
  50%       { transform: scaleX(0.5); opacity: 1;    }
}

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-shrink: 0;
}

.nav-burger span {
  display: block;
  height: 2px;
  background: var(--nav-fg, rgba(255, 255, 255, 0.8));
  border-radius: 2px;
  transform-origin: right center;
}

.nav-burger span:nth-child(1) { width: 22px; animation: burgerWave 1.6s ease-in-out infinite 0s;    }
.nav-burger span:nth-child(2) { width: 14px; animation: burgerWave 1.6s ease-in-out infinite 0.28s; }
.nav-burger span:nth-child(3) { width: 22px; animation: burgerWave 1.6s ease-in-out infinite 0.56s; }

.nav-burger:hover span { animation: none; transition: transform 0.30s cubic-bezier(0.22,1,0.36,1), width 0.30s cubic-bezier(0.22,1,0.36,1); }
.nav-burger:hover span:nth-child(1) { width: 14px; transform: translateX(8px); }
.nav-burger:hover span:nth-child(2) { width: 22px; transform: translateX(-4px); }
.nav-burger:hover span:nth-child(3) { width: 14px; transform: translateX(8px); }

/* ── MOBILE MENU OVERLAY ─────────────────────────────────── */
.mob-menu {
  position: fixed;
  inset: 0;
  z-index: 9500;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.mob-menu.is-open {
  opacity: 1;
  pointer-events: all;
}

/* Nav bar gizle menü açıkken */
body.mob-menu-open .site-nav {
  opacity: 0;
  pointer-events: none;
}

.mob-menu-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  background: rgba(0, 0, 0, 0.32);
  border: 1.5px solid rgba(255, 255, 255, 0.38);
  border-radius: 16px;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}

.mob-menu-close:hover {
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.75);
  transform: rotate(90deg);
}

.mob-menu-close svg {
  width: 22px;
  height: 22px;
}

.mob-menu-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 36px;
}

.mob-menu-link {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color 0.2s;
}

.mob-menu-link:hover,
.mob-menu-link.is-active { color: #fff; }

.mob-menu-social {
  position: absolute;
  bottom: 40px;
  display: flex;
  gap: 36px;
}

.mob-menu-social-link {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  text-decoration: none;
  transition: color 0.2s;
}

.mob-menu-social-link:hover { color: rgba(255, 255, 255, 0.90); }

/* ── OVERLAY BACKGROUND PER PAGE ─────────────────────────── */
body.page-uxui     .mob-menu { background: rgba(185, 28,  28,  0.97); }
body.page-artworks .mob-menu { background: rgba(29,  78,  216, 0.97); }
body.page-contact  .mob-menu { background: rgba(20,  20,  26,  0.97); }
body.page-detail   .mob-menu { background: rgba(10,  8,   8,   0.97); }

/* ── MOBILE: burger görünür, nav-links gizli ─────────────── */
@media (max-width: 768px) {
  body:not(.page-index) .nav-links  { display: none; }
  body:not(.page-index) .nav-burger { display: flex; }
}

/* ── INDEX — MOBILE OVERRIDES ────────────────────────────── */
@media (max-width: 768px) {
  body.page-index .site-nav {
    --nav-border:          rgba(90, 90, 90, 0.50);
    --nav-border-scrolled: rgba(90, 90, 90, 0.60);
    --nav-fg:              rgba(110, 110, 110, 0.90);
  }

  body.page-index .site-nav .nav-left {
    display: none;
  }

  body.page-index .site-nav .nav-links {
    flex: 1;
    justify-content: center;
    gap: 32px;
  }

  body.page-index .site-nav .nav-link {
    font-size: 0.70rem;
    padding: 8px 4px;
  }
}