/* Header Component - Cuttack Shanti Committee */
/* Responsive navigation with Durga Puja branding */

/* ===== HEADER CONTAINER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--neutral-white);
  box-shadow: var(--shadow-md);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
  height: var(--header-height);
}

.header--scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
}

.header--transparent {
  background-color: transparent;
  box-shadow: none;
}

.header--transparent .header__nav-link,
.header--transparent .header__brand-text {
  color: var(--neutral-white);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* ===== HEADER INNER CONTAINER ===== */
.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ===== BRAND/LOGO SECTION ===== */
.header__brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: var(--transition-all);
}

.header__brand:hover {
  transform: scale(1.02);
}

.header__brand-logo {
  width: 50px;
  height: 50px;
  margin-right: var(--spacing-md);
  border-radius: var(--border-radius-md);
  object-fit: cover;
  border: 2px solid var(--accent-gold);
  transition: var(--transition-all);
}

.header__brand-logo:hover {
  border-color: var(--primary-red);
  box-shadow: var(--shadow-gold);
}

.header__brand-text {
  display: flex;
  flex-direction: column;
}

.header__brand-title {
  font-family: var(--font-secondary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary-red);
  line-height: 1.2;
  margin: 0;
}

.header__brand-subtitle {
  font-size: var(--font-size-sm);
  color: var(--neutral-gray);
  margin: 0;
  font-weight: var(--font-weight-normal);
}

/* Hide brand text on small mobile */
@media (max-width: 480px) {
  .header__brand-text {
    display: none;
  }
}

/* ===== NAVIGATION MENU ===== */
.header__nav {
  display: flex;
  align-items: center;
}

.header__nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-sm);
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--nav-link-padding);
  color: var(--neutral-black);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  border-radius: var(--border-radius-md);
  transition: var(--transition-all);
  position: relative;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-red), var(--accent-gold));
  transition: all var(--transition-normal);
  transform: translateX(-50%);
}

.header__nav-link:hover,
.header__nav-link:focus {
  color: var(--primary-red);
  background-color: var(--neutral-cream);
}

.header__nav-link:hover::after,
.header__nav-link:focus::after {
  width: 80%;
}

.header__nav-link--active {
  color: var(--primary-red);
  font-weight: var(--font-weight-semibold);
}

.header__nav-link--active::after {
  width: 80%;
}

/* ===== MOBILE MENU TOGGLE ===== */
.header__mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 30px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: var(--z-fixed);
}

.header__mobile-toggle:focus {
  outline: 2px solid var(--primary-red);
  outline-offset: 2px;
}

.header__mobile-toggle-line {
  width: 100%;
  height: 3px;
  background-color: var(--neutral-black);
  border-radius: 2px;
  transition: var(--transition-all);
  transform-origin: center;
}

.header--transparent .header__mobile-toggle-line {
  background-color: var(--neutral-white);
}

/* Mobile toggle animation states */
.header__mobile-toggle--active .header__mobile-toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.header__mobile-toggle--active .header__mobile-toggle-line:nth-child(2) {
  opacity: 0;
}

.header__mobile-toggle--active .header__mobile-toggle-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ===== CTA BUTTON ===== */
.header__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--primary-red), var(--primary-maroon));
  color: var(--neutral-white);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-md);
  transition: var(--transition-all);
  margin-left: var(--spacing-md);
  border: 2px solid transparent;
}

.header__cta:hover,
.header__cta:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow-red);
  background: linear-gradient(135deg, var(--primary-maroon), var(--accent-burgundy));
}

.header__cta:focus {
  outline: none;
  border-color: var(--accent-gold);
}

/* ===== MOBILE RESPONSIVE NAVIGATION ===== */
@media (max-width: 1023px) {
  .header__mobile-toggle {
    display: flex;
  }
  
  .header__nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--neutral-white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
  }
  
  .header__nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .header__nav-list {
    flex-direction: column;
    padding: var(--spacing-lg) var(--spacing-md);
    gap: 0;
    align-items: stretch;
  }
  
  .header__nav-item {
    border-bottom: 1px solid var(--neutral-light-gray);
  }
  
  .header__nav-item:last-child {
    border-bottom: none;
  }
  
  .header__nav-link {
    display: block;
    padding: var(--spacing-md);
    border-radius: 0;
    width: 100%;
  }
  
  .header__nav-link::after {
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    transform: none;
  }
  
  .header__nav-link:hover::after,
  .header__nav-link--active::after {
    width: 100%;
  }
  
  .header__cta {
    margin: var(--spacing-md) var(--spacing-md) 0;
    text-align: center;
    justify-content: center;
  }
}

/* ===== MOBILE OVERLAY ===== */
.header__mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-dropdown) - 1);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-all);
}

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

/* ===== FESTIVAL THEME ENHANCEMENTS ===== */
.header--festival {
  background: linear-gradient(135deg, var(--neutral-white) 0%, var(--neutral-cream) 100%);
  border-bottom: 3px solid var(--accent-gold);
}

.header--festival .header__brand-title {
  background: linear-gradient(135deg, var(--primary-red), var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== SCROLL PROGRESS INDICATOR ===== */
.header__progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-red), var(--accent-gold), var(--primary-orange));
  transition: width var(--transition-fast);
  z-index: 1;
}

/* ===== ACCESSIBILITY ENHANCEMENTS ===== */
.header__skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--neutral-black);
  color: var(--neutral-white);
  padding: 8px;
  text-decoration: none;
  z-index: var(--z-tooltip);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.header__skip-link:focus {
  top: 6px;
}

/* ===== SEARCH INTEGRATION (Future Enhancement) ===== */
.header__search {
  display: none; /* Hidden for now, can be enabled later */
  position: relative;
  margin-right: var(--spacing-md);
}

.header__search-input {
  padding: 0.5rem 1rem;
  border: 1px solid var(--neutral-light-gray);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  width: 200px;
  transition: var(--transition-all);
}

.header__search-input:focus {
  outline: none;
  border-color: var(--primary-red);
  box-shadow: 0 0 0 2px rgba(211, 47, 47, 0.2);
}

/* ===== PRINT STYLES ===== */
@media print {
  .header {
    position: static;
    box-shadow: none;
    background: transparent;
    border-bottom: 1px solid #000;
  }
  
  .header__mobile-toggle,
  .header__cta {
    display: none;
  }
  
  .header__nav {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    background: transparent;
  }
  
  .header__nav-list {
    flex-direction: row;
    padding: 0;
  }
  
  .header__nav-link {
    color: #000 !important;
  }
}

/* ===== PERFORMANCE OPTIMIZATIONS ===== */
.header {
  contain: layout style;
  will-change: transform;
}

.header__nav {
  contain: layout style;
}

/* Remove will-change after animations complete */
.header:not(.header--animating) {
  will-change: auto;
}

/* ===== HIGH CONTRAST MODE ===== */
@media (prefers-contrast: high) {
  .header {
    border-bottom: 2px solid;
  }
  
  .header__nav-link {
    border: 1px solid transparent;
  }
  
  .header__nav-link:hover,
  .header__nav-link:focus {
    border-color: currentColor;
  }
}