/* ========================================
   Header Styles - Mobile-First
   ======================================== */

.site-header {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm);
  max-width: 1200px;
  margin: 0 auto;
}

/* Logo */
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.logo:hover {
  color: var(--primary-dark);
  text-decoration: none;
}

.logo-icon {
  font-size: 1.75rem;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  min-width: 44px;
  min-height: 44px;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  position: relative;
  transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  transition: all var(--transition-fast);
}

.hamburger::before {
  top: -7px;
}

.hamburger::after {
  bottom: -7px;
}

/* Hamburger Animation */
.mobile-menu-btn.active .hamburger {
  background: transparent;
}

.mobile-menu-btn.active .hamburger::before {
  transform: rotate(45deg);
  top: 0;
}

.mobile-menu-btn.active .hamburger::after {
  transform: rotate(-45deg);
  bottom: 0;
}

/* Navigation Menu - Mobile */
.nav-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: var(--bg-white);
  list-style: none;
  padding: 80px var(--spacing-md) var(--spacing-md);
  transition: right var(--transition-normal);
  overflow-y: auto;
  z-index: 999;
}

.nav-menu.active {
  right: 0;
}

/* Close button inside mobile nav */
.nav-close-btn {
  display: none;
}

.nav-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: var(--bg-white);
  list-style: none;
  padding: 80px var(--spacing-md) var(--spacing-md);
  transition: right var(--transition-normal);
  overflow-y: auto;
  z-index: 999;
}

.nav-menu.active {
  right: 0;
}

/* Mobile nav close button */
.nav-menu .nav-close-btn {
  display: block;
  position: absolute;
  top: 12px;
  right: 16px;
  width: 44px;
  height: 44px;
  line-height: 44px;
  text-align: center;
  font-size: 2rem;
  font-weight: 300;
  color: var(--text-dark);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0;
  min-width: 44px;
  min-height: 44px;
}

.nav-menu .nav-close-btn:hover {
  background: var(--bg-cream);
  color: var(--primary);
  text-decoration: none;
}

.nav-menu li {
  margin-bottom: var(--spacing-md);
}

.nav-menu a {
  display: block;
  padding: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-height: 44px;
}

.nav-menu a:hover,
.nav-menu a.active {
  background: var(--bg-cream);
  color: var(--primary);
  text-decoration: none;
}

/* Login Button - Mobile */
.btn-login {
  display: block;
  width: 100%;
  margin-top: var(--spacing-md);
}

/* Overlay */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 998;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Tablet - 768px */
@media (min-width: 768px) {
  .nav-container {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .logo {
    font-size: 1.75rem;
  }
}

/* Desktop - 1024px */
@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
  
  .nav-menu {
    position: static;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 0;
    height: auto;
    overflow: visible;
    margin-left: auto;
  }

  .nav-close-btn {
    display: none !important;
  }
  
  .nav-menu li {
    margin: 0;
  }
  
  .nav-menu a {
    font-size: 1rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .btn-login {
    display: inline-block;
    width: auto;
    margin: 0;
    padding: 10px 20px;
  }
}