/* ============================================================
   navbar.css — Navigation Bar
   Claudia Illanes Portfolio
   ============================================================ */

/* ---- Base Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-h);
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--ease),
    box-shadow   var(--ease);
}

/* Shadow appears on scroll */
.navbar.scrolled {
  border-bottom-color: var(--clr-border);
  box-shadow: 0 2px 28px rgba(0, 0, 0, 0.055);
}

/* ---- Inner Container ---- */
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* ---- Logo ---- */
.nav-logo {
  flex-shrink: 0;
  line-height: 1;
}

.nav-logo a {
  font-family: var(--font-logo);
  font-weight: 400;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--clr-text);
  letter-spacing: 0.01em;
  text-transform: uppercase;
  transition: opacity var(--ease-fast);
}

.nav-logo a:hover {
  opacity: 0.6;
}

/* ---- Nav Links List ---- */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}

/* ---- Individual Links ---- */
.nav-links li a {
  font-size: 0.67rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-text-sub);
  position: relative;
  padding-bottom: 3px;
  white-space: nowrap;
  transition: color var(--ease-fast);
}

/* Animated underline */
.nav-links li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--clr-text);
  transition: width var(--ease);
}

.nav-links li a:hover,
.nav-links li a.active {
  color: var(--clr-text);
}

.nav-links li a:hover::after,
.nav-links li a.active::after {
  width: 100%;
}

/* ---- Language Toggle Button ---- */
.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.38rem 0.82rem;
  border: 1px solid var(--clr-border);
  background: transparent;
  color: var(--clr-text-sub);
  font-family: var(--font-body);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  line-height: 1;
  cursor: pointer;
  transition:
    border-color var(--ease-fast),
    color        var(--ease-fast),
    background   var(--ease-fast);
}

.lang-btn:hover {
  border-color: var(--clr-border-strong);
  color: var(--clr-text);
}

.lang-flag {
  width: 18px;
  height: auto;
  display: block;
  flex-shrink: 0;
}

/* ---- Hamburger Icon ---- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5.5px;
  width: 38px;
  height: 38px;
  align-items: center;
  cursor: pointer;
  background: none;
  border: none;
  padding: 2px;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--clr-text);
  border-radius: 1px;
  transform-origin: center;
  transition:
    transform var(--ease),
    opacity   var(--ease);
}

/* Hamburger → X transition */
.hamburger.is-open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0.05);
}

.hamburger.is-open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   COMPACT DESKTOP NAV  (769–1120px)
   Keeps all six links + language toggle on one line.
   ============================================================ */
@media (min-width: 769px) and (max-width: 1120px) {
  .nav-inner {
    gap: 1.2rem;
  }
  .nav-links {
    gap: 1.4rem;
  }
  .nav-links li a {
    font-size: 0.62rem;
    letter-spacing: 0.13em;
  }
}

/* ============================================================
   MOBILE NAVBAR  (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {

  .hamburger {
    display: flex;
  }

  /* A blurred backdrop turns .navbar into a containing block that would
     CLIP the fixed dropdown menu to the bar's height (only the first item
     showed). Use a solid bar on mobile so the menu spans the full screen. */
  .navbar {
    background-color: #fff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  /* Full-screen dropdown panel */
  .nav-links {
    position: fixed;
    top: var(--navbar-h);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 0;
    padding: 1.8rem var(--pad-x) 3rem;
    background-color: var(--clr-bg);
    border-top: 1px solid var(--clr-border);
    overflow-y: auto;

    /* Hidden state */
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition:
      opacity    var(--ease),
      visibility var(--ease),
      transform  var(--ease);
  }

  .nav-links.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
    transform: translateY(0);
  }

  .nav-links li {
    width: 100%;
    border-bottom: 1px solid var(--clr-border);
  }

  .nav-links li:last-child {
    border-bottom: none;
    margin-top: 1.2rem;
  }

  .nav-links li a {
    display: block;
    padding: 1rem 0;
    font-size: 0.82rem;
    letter-spacing: 0.22em;
  }

  /* Disable underline animation in mobile menu */
  .nav-links li a::after {
    display: none;
  }

  .lang-btn {
    margin-top: 0.3rem;
  }
}