/* ==========================
   Header - Mobile First
========================== */

.site-header {
  position: relative;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  max-width: 1200px;
  margin: 0 auto;
}

/* ==========================
   Hamburger Button
========================== */

.hamburger {
  position: fixed;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 35px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 10001;
}

.hamburger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: white;
  border-radius: 2px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.35);

  transition:
    background-color 0.3s ease,
    transform 0.3s ease,
    opacity 0.3s ease;
}

.hamburger span:nth-child(1) {
  top: 0;
}

.hamburger span:nth-child(2) {
  top: 12px;
}

.hamburger span:nth-child(3) {
  bottom: 0;
}

.hamburger.active span:nth-child(1) {
  top: 12px;
  transform: rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  top: 12px;
  transform: rotate(-45deg);
}

.hamburger:hover span,
.hamburger.active span {
  background-color: var(--color-accent);
}

/* ==========================
   Mobile Navigation
========================== */

.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  width: 75%;
  max-width: 320px;
  height: 100vh;
  background: #000;
  padding: 6rem 2rem 2rem;
  z-index: 10000;

  transform: translateX(100%);
  transition: transform 0.35s ease;
}

.site-nav.active {
  transform: translateX(0);
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;

  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.nav-list li {
  margin: 0;
}

.site-nav a {
  position: relative;
  text-decoration: none;
  color: white;
  font-weight: 600;
  transition: color 0.3s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0%;
  height: 2px;
  background: white;
  transition: width 0.3s ease;
}

/* ==========================
   Tablet
========================== */

@media (min-width: 481px) and (max-width: 767px) {
  .site-header {
    background: #000;
  }

  .header-inner {
    justify-content: center;
  }

  .hamburger {
    display: none;
  }

  .site-nav {
    position: static;
    width: auto;
    max-width: none;
    height: auto;
    background: none;
    padding: 0;
    transform: none;
    transition: none;
  }

  .nav-list {
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 20px;
    padding: 8px 0;
  }

  .nav-list li {
    min-width: 0;
  }

  .nav-list a {
    font-size: clamp(0.9rem, 1.5vw, 1rem);
  }
}

/* ==========================
   Desktop
========================== */

@media (min-width: 768px) {
  .site-header {
    background: #000;
  }

  .header-inner {
    justify-content: center;
  }

  .hamburger {
    display: none;
  }

  .site-nav {
    position: static;
    width: auto;
    max-width: none;
    height: auto;
    background: none;
    padding: 0;
    transform: none;
    transition: none;
  }

  .nav-list {
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: var(--space-2xl);
    padding: var(--space-xxs) 0;
  }
}

/* ==========================
   Hover Effects
========================== */

@media (hover: hover) and (pointer: fine) {
  .site-nav a:hover {
    color: var(--color-accent);
  }

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