/* ============================================
   Chicken Road 2.0 — Header Styles
   Sticky header + mobile burger
   ============================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5em;
  text-decoration: none;
  flex-shrink: 0;
}
.logo:hover {
  text-decoration: none;
}
.logo-icon {
  width: 36px;
  height: 36px;
}
.logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-road);
  line-height: 1.1;
}
.logo-text .version {
  color: var(--color-primary);
  font-size: 0.85em;
}

/* Desktop Nav */
.main-nav {
  display: none;
  align-items: center;
  gap: 0.25em;
}
.main-nav a {
  padding: 0.4em 0.75em;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
  background: var(--color-surface-2);
  color: var(--color-primary);
  text-decoration: none;
}

/* Sticky CTA */
.header-cta {
  display: none;
}

/* Burger */
.burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  background: none;
  border: none;
}
.burger span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--color-road);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.burger.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.burger.active span:nth-child(2) {
  opacity: 0;
}
.burger.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-overlay);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100%;
  background: var(--color-surface);
  box-shadow: var(--shadow-xl);
  padding: calc(var(--header-height) + var(--space-lg)) var(--space-lg) var(--space-lg);
  transform: translateX(100%);
  transition: transform 0.35s ease;
  overflow-y: auto;
}
.mobile-menu.open .mobile-menu-panel {
  transform: translateX(0);
}

.mobile-menu-panel nav {
  display: flex;
  flex-direction: column;
  gap: 0.25em;
}
.mobile-menu-panel nav a {
  padding: 0.75em 1em;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  transition: background 0.2s;
}
.mobile-menu-panel nav a:hover,
.mobile-menu-panel nav a.active {
  background: var(--color-surface-2);
  color: var(--color-primary);
  text-decoration: none;
}
.mobile-menu-panel .mobile-cta {
  margin-top: var(--space-lg);
}

/* Body lock */
body.menu-open {
  overflow: hidden;
}

/* --- Responsive --- */
@media (min-width: 768px) {
  .main-nav {
    display: flex;
  }
  .header-cta {
    display: inline-flex;
  }
  .burger {
    display: none;
  }
}

@media (max-width: 767px) {
  .header-inner {
    padding: 0 var(--space-sm) 0 var(--space-md);
  }
}

/* Image logo */
.logo-image {
  display: block;
  width: 200px;
  height: 50px;
  max-width: 100%;
}

@media (max-width: 380px) {
  .logo-image {
    width: 170px;
    height: auto;
  }
}