/* ============================================================
   SUZE ART STUDIO — Navigation Styles
   nav.css: site header, nav links, mobile hamburger menu
   ============================================================ */

/* ============================================================
   SITE HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-cream);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

/* Shadow appears when user scrolls — added by nav.js */
.site-header--scrolled {
  box-shadow: var(--shadow-md);
}

/* ============================================================
   NAV CONTAINER
   ============================================================ */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem var(--space-md);
}

/* ============================================================
   LOGO / BRAND NAME
   ============================================================ */
.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
}

.nav-logo:hover {
  text-decoration: none;
}

/* Signature-style "Suze" using Pinyon Script */
.nav-logo__signature {
  font-family: 'Pinyon Script', cursive;
  font-size: 2.4rem;
  font-weight: 400;
  color: var(--color-espresso);
  line-height: 1;
  transition: color var(--transition);
}

/* "Art Studio" label beneath the signature */
.nav-logo__studio {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-warm-brown);
  margin-top: -2px;
}

.nav-logo:hover .nav-logo__signature {
  color: var(--color-accent);
}

/* ============================================================
   NAV MENU — Desktop
   ============================================================ */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-menu li a {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-espresso);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Commission CTA — styled as a pill button */
.nav-menu li a.nav-cta {
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  border-bottom: none;
  transition: background-color var(--transition), transform var(--transition);
}

.nav-menu li a.nav-cta:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-1px);
}

/* ============================================================
   HAMBURGER TOGGLE BUTTON — Mobile only
   ============================================================ */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 110;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-espresso);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Animate hamburger to X when open */
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ============================================================
   MOBILE MENU — Responsive
   ============================================================ */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-cream);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    z-index: 105;
    padding: var(--space-2xl) var(--space-md);
  }

  .nav-menu.nav-menu--open {
    display: flex;
  }

  .nav-menu li {
    width: 100%;
    text-align: center;
  }

  .nav-menu li a {
    font-size: var(--text-2xl);
    font-family: var(--font-heading);
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    border-bottom: none;
    display: block;
    padding: var(--space-xs) 0;
  }

  .nav-menu li a:hover {
    color: var(--color-accent);
    border-bottom: none;
  }

  .nav-menu li a.nav-cta {
    font-size: var(--text-lg);
    padding: 0.75rem 2rem;
    margin-top: var(--space-sm);
  }
}