/* ============================================================
   Chefly — Navbar v2
   ============================================================ */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background var(--t-base) var(--ease),
              box-shadow var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease);
}
.site-header.is-scrolled {
  background: rgba(255,248,240,0.88);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(232,67,10,0.1);
  box-shadow: 0 1px 0 rgba(0,0,0,0.05), var(--shadow-sm);
}
html[data-theme="dark"] .site-header.is-scrolled {
  background: rgba(17,13,8,0.88);
  border-bottom-color: rgba(255,107,53,0.12);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--nav-h);
}

/* Brand */
.navbar__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--c-text);
  flex-shrink: 0;
}
.navbar__brand:hover { color: var(--c-text); }
.navbar__logo-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--fire) 0%, var(--ember) 100%);
  color: #fff;
  display: grid; place-items: center;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(232,67,10,0.35);
}
.navbar__logo-text {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

/* Desktop links */
.navbar__links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0; padding: 0;
}
.navbar__link {
  position: relative;
  padding: 9px 14px;
  color: var(--c-text-mid);
  font-weight: 500;
  font-size: var(--fs-sm);
  border-radius: var(--r-full);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.navbar__link:hover,
.navbar__link.is-active {
  color: var(--fire);
  background: rgba(232,67,10,0.08);
}
.navbar__link.is-active::after {
  content: '';
  position: absolute;
  left: 50%; bottom: 3px;
  transform: translateX(-50%);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--fire);
}

/* Actions */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}

/* Search */
.navbar__search { position: relative; display: flex; align-items: center; }
.navbar__search-icon {
  position: absolute; left: 14px;
  color: var(--c-text-muted); font-size: 0.8rem; pointer-events: none;
}
.navbar__search-input {
  width: 200px;
  padding: 9px 14px 9px 36px;
  border: 1.5px solid var(--c-border-soft);
  border-radius: var(--r-full);
  background: var(--c-surface);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  transition: width var(--t-base) var(--ease), border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.navbar__search-input:focus {
  outline: none; width: 260px;
  border-color: rgba(232,67,10,0.35);
  box-shadow: 0 0 0 4px rgba(232,67,10,0.08);
}
.navbar__search-input::placeholder { color: var(--c-text-muted); }

/* Theme toggle */
.navbar__theme-btn {
  width: 40px; height: 40px;
  border-radius: var(--r-full);
  border: 1.5px solid var(--c-border-soft);
  background: var(--c-surface);
  color: var(--c-text-soft);
  cursor: pointer;
  display: grid; place-items: center;
  transition: transform var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}
.navbar__theme-btn:hover { border-color: var(--fire); color: var(--fire); transform: rotate(12deg); }
.theme-icon--light { display: none; }
html[data-theme="dark"] .theme-icon--dark  { display: none; }
html[data-theme="dark"] .theme-icon--light { display: inline; }

/* Auth buttons */
.navbar__auth-btn.btn--ghost {
  padding: 9px 18px;
  border-color: var(--c-border-soft);
  font-size: var(--fs-sm);
}
.navbar__auth-btn.btn--primary { padding: 9px 20px; font-size: var(--fs-sm); }

/* User */
.navbar__user {
  display: inline-flex; align-items: center; gap: var(--space-2);
  color: var(--c-text-soft); font-size: var(--fs-sm); font-weight: 500;
}
.navbar__user i { color: var(--fire); font-size: 1.25rem; }

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  width: 42px; height: 42px; padding: 10px;
  border: 1.5px solid var(--c-border-soft);
  border-radius: var(--r-md);
  background: var(--c-surface);
  cursor: pointer;
}
.navbar__hamburger span {
  display: block; height: 2px; width: 100%;
  background: var(--c-text); border-radius: 2px;
  transition: transform var(--t-base) var(--ease), opacity var(--t-base) var(--ease);
}
.navbar__hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__hamburger.is-open span:nth-child(2) { opacity: 0; }
.navbar__hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.mobile-nav {
  position: fixed;
  top: var(--nav-h); left: 0; right: 0; bottom: 0;
  background: rgba(26,18,9,0.45);
  backdrop-filter: blur(6px);
  z-index: 999;
  opacity: 0; visibility: hidden;
  transition: opacity var(--t-base) var(--ease), visibility var(--t-base) var(--ease);
}
.mobile-nav.is-open { opacity: 1; visibility: visible; }
.mobile-nav__inner {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border-soft);
  padding: var(--space-6);
  display: flex; flex-direction: column; gap: var(--space-2);
  box-shadow: var(--shadow-lg);
  transform: translateY(-12px);
  transition: transform var(--t-base) var(--ease);
}
.mobile-nav.is-open .mobile-nav__inner { transform: translateY(0); }
.mobile-nav__link {
  padding: 13px 16px;
  color: var(--c-text); font-weight: 500;
  border-radius: var(--r-md); text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast);
}
.mobile-nav__link:hover, .mobile-nav__link.is-active {
  background: rgba(232,67,10,0.08); color: var(--fire);
}
.mobile-nav__search { display: flex; gap: var(--space-2); margin: var(--space-3) 0; }
.mobile-nav__search input {
  flex: 1; padding: 12px 16px;
  border: 1.5px solid var(--c-border-soft);
  border-radius: var(--r-md);
  background: var(--c-bg); color: var(--c-text);
  font-family: var(--font-sans);
}
.mobile-nav__search input:focus { outline: none; border-color: var(--fire); }

/* Scroll-to-top */
.scroll-top {
  position: fixed; right: 24px; bottom: 24px;
  width: 46px; height: 46px; border-radius: var(--r-full);
  border: none;
  background: linear-gradient(135deg, var(--fire) 0%, var(--ember) 100%);
  color: #fff; cursor: pointer;
  box-shadow: var(--shadow-glow);
  opacity: 0; visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--t-base) var(--ease), visibility var(--t-base) var(--ease), transform var(--t-base) var(--ease);
  z-index: 900;
}
.scroll-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.scroll-top:hover { transform: translateY(-3px); }

@media (max-width: 1100px) {
  .navbar__links { display: none; }
  .navbar__search { display: none; }
  .navbar__auth-btn--login { display: none; }
  .navbar__hamburger { display: flex; }
}
@media (max-width: 640px) {
  .navbar__username, .navbar__user { display: none; }
  .navbar__auth-btn:not(.navbar__auth-btn--login) { display: none; }
}