/* ============================================================
   OmniResume — Site Header
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(var(--blur-md));
  -webkit-backdrop-filter: saturate(180%) blur(var(--blur-md));
  border-bottom: 1px solid var(--color-border);
  transition:
    background-color var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  height: var(--header-height);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 640px)  { .site-header__inner { padding-inline: var(--space-6); } }
@media (min-width: 1024px) { .site-header__inner { padding-inline: var(--space-8); } }

/* ========== BRAND ========== */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
  flex-shrink: 0;
}
.brand:hover { color: var(--color-text); }

.brand__mark { width: 32px; height: 32px; flex-shrink: 0; }

.brand__name {
  background: linear-gradient(135deg, var(--color-brand-600), var(--color-brand-800));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

[data-theme="dark"] .brand__name {
  background: linear-gradient(135deg, var(--color-brand-300), var(--color-brand-500));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ========== NAV ========== */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-inline-start: var(--space-6);
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition:
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  background: var(--color-bg-muted);
  color: var(--color-text);
}

/* ========== ACTIONS ========== */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-inline-start: auto;
}
.header-actions .btn { flex-shrink: 0; }

/* ========== MOBILE NAV TOGGLE ========== */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  background: transparent;
  transition: background-color var(--duration-fast) var(--ease-out);
}
.nav-toggle:hover { background: var(--color-bg-muted); color: var(--color-text); }
.nav-toggle img { width: 22px; height: 22px; }

/* ========== MOBILE NAV PANEL ========== */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
}
.mobile-nav[data-open="true"] { pointer-events: auto; opacity: 1; }

.mobile-nav__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.mobile-nav__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(340px, 88vw);
  height: 100%;
  background: var(--color-bg);
  border-left: 1px solid var(--color-border);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  overflow-y: auto;
}
.mobile-nav[data-open="true"] .mobile-nav__panel { transform: translateX(0); }

.mobile-nav__close { align-self: flex-end; margin-bottom: var(--space-2); }

.mobile-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  border-radius: var(--radius-lg);
  transition: background-color var(--duration-fast) var(--ease-out);
}
.mobile-nav__link:hover { background: var(--color-bg-muted); }

.mobile-nav__footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}