/**
 * Mega Menu Styles
 * Mega menu CSS for WordPress theme
 * References CSS variables from common.css
 */

/* ========================================
   CSS Variables (Mega Menu Specific)
   ======================================== */
:root {
  /* Spacing (Mega menu specific, duplicates from common.css removed) */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;

  /* Mega Menu Layout Dimensions */
  --mega-menu-category-info-height: 180px;
  --mega-menu-logo-height: 40px;
  --mega-menu-logo-height-mobile: 32px;

  /* Mega Menu Colors */
  --mega-menu-active-bg: #F5F5F5;
}

/* ========================================
   Mega Menu Header Override
   Override existing header for mega menu
   ======================================== */

/* Hamburger button: Always visible (even on desktop) */
body.has-mega-menu .header__mobile-btn {
  display: flex;
}

/* Existing navigation: Hidden (replaced by mega menu) */
body.has-mega-menu .header__nav {
  display: none;
}

/* ===========================
   Body State - Menu Open
=========================== */
body.is-menu-open {
  overflow: hidden;
}

/* ===========================
   Header - Closed State
=========================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 88px;
  background: transparent;
  transition: opacity 300ms ease-out;
}

.header.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.header__left {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  height: var(--header-height);
  padding: 0 24px;
  border-radius: var(--radius-pill);
}

.header__mobile-btn {
  background: rgba(0, 0, 0, 0.06);
  border: none;
  border-radius: 10px;
  color: var(--color-text);
  cursor: pointer;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 150ms ease, transform 150ms ease;
}

.header__mobile-btn svg {
  width: 28px;
  height: 22px;
}

.header__mobile-btn:hover {
  background: rgba(0, 0, 0, 0.12);
  transform: scale(1.05);
}

.header__mobile-btn:focus-visible {
  outline: 2px solid var(--color-main);
  outline-offset: 2px;
}

.header__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.header__logo img {
  height: var(--mega-menu-logo-height);
  width: auto;
}

/* ===========================
   Mega Menu - Open State
=========================== */
.mega-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-mega-menu);
  /* Animated gradient background */
  background: linear-gradient(-45deg, #0084FF, #FAD200, #0066CC, #E8F4FF);
  background-size: 400% 400%;
  animation: gradientAnimation 15s ease infinite;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(-20px);
  pointer-events: none;
  transition: opacity 300ms ease-out, transform 300ms ease-out;
}

@keyframes gradientAnimation {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.mega-menu.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.mega-menu__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-lg);
  background: var(--glass-bg-medium);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.mega-menu__header-left {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  height: var(--header-height);
  padding: 0 24px;
  border-radius: var(--radius-pill);
}

.mega-menu__close {
  background: none;
  border: none;
  font-size: 32px;
  color: var(--color-text);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: transform 150ms ease, color 150ms ease;
}

.mega-menu__close:hover {
  transform: rotate(90deg);
  color: var(--color-main);
}

.mega-menu__close:focus-visible {
  outline: 2px solid var(--color-main);
  outline-offset: 2px;
}

.mega-menu__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.mega-menu__logo img {
  height: var(--mega-menu-logo-height);
  width: auto;
}

/* Mega Menu Body */
.mega-menu__body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Left Column */
.mega-menu__left {
  width: var(--mega-menu-left-width);
  background: var(--glass-bg-heavy);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-right: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

#megaMenu .mega-menu__category-info {
  position: relative;
  background: var(--color-main);
  color: #FFFFFF;
  padding: var(--space-xl);
  height: var(--mega-menu-category-info-height);
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex-shrink: 0;
}

#megaMenu .mega-menu__category-info h3 {
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
  color: #FFFFFF;
}

#megaMenu .mega-menu__category-info p {
  font-size: 16px;
  line-height: 1.8;
  opacity: 0.95;
  color: #FFFFFF;
}

/* Ensure white color (maximize ID specificity) */
#megaMenu #categoryInfo,
#megaMenu #categoryInfo h3,
#megaMenu #categoryInfo p,
#megaMenuTitle {
  color: #FFFFFF !important;
}

.mega-menu__nav {
  display: flex;
  flex-direction: column;
  padding: var(--space-md) 0 var(--space-xl);
}

.mega-menu__nav button {
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text);
  background: none;
  border: none;
  text-align: left;
  padding: var(--space-sm) var(--space-xl);
  cursor: pointer;
  transition: background-color 150ms ease;
  position: relative;
}

.mega-menu__nav button::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-main);
  opacity: 0;
  transition: opacity 150ms ease;
}

.mega-menu__nav button:hover,
.mega-menu__nav button[aria-selected="true"] {
  background: var(--mega-menu-active-bg);
}

.mega-menu__nav button[aria-selected="true"]::before {
  opacity: 1;
}

.mega-menu__nav button:focus-visible {
  outline: 2px solid var(--color-main);
  outline-offset: -2px;
}

/* Close Button - Mobile (bottom-right of category info area) */
.mega-menu__info-close {
  display: none; /* Hidden on desktop */
  position: absolute;
  bottom: 16px;
  right: 16px;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-pill);
  color: #FFFFFF;
  font-family: var(--font-jp);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
}

.mega-menu__info-close:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.6);
}

.mega-menu__info-close:focus-visible {
  outline: 2px solid #FFFFFF;
  outline-offset: 2px;
}

.mega-menu__info-close svg {
  width: 14px;
  height: 14px;
}

/* Close Guide - Desktop (bottom of left column) */
.mega-menu__close-guide {
  margin-top: auto;
  padding: var(--space-lg) var(--space-xl);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  text-align: center;
}

.mega-menu__close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 48px 12px 24px;
  background: transparent;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  font-family: var(--font-jp);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
}

.mega-menu__close-btn:hover {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.25);
}

.mega-menu__close-btn:focus-visible {
  outline: 2px solid var(--color-main);
  outline-offset: 2px;
}

.mega-menu__close-btn svg {
  width: 16px;
  height: 16px;
}

.mega-menu__close-hint {
  margin-top: 12px;
  font-size: 12px;
  color: rgba(0, 0, 0, 0.5);
}

/* Right Column */
.mega-menu__right {
  flex: 1;
  padding: var(--space-xl);
  overflow-y: auto;
  position: relative;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.mega-menu__submenu {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  /* Changed to transition (performance optimization) */
  transition: opacity 200ms ease, transform 200ms ease;
}

.mega-menu__submenu[aria-hidden="false"] {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.mega-menu__submenu-title {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(0, 0, 0, 0.5);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.mega-menu__items {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-sm);
}

.mega-menu__item {
  display: block;
  padding: var(--space-md);
  background: #FFFFFF;
  border-radius: 12px;
  text-decoration: none;
  color: var(--color-text);
  transition: transform 150ms ease, box-shadow 150ms ease;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.mega-menu__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.mega-menu__item:focus-visible {
  outline: 2px solid var(--color-main);
  outline-offset: 2px;
}

.mega-menu__item-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.mega-menu__item-title svg {
  width: 16px;
  height: 16px;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 150ms ease, transform 150ms ease;
  flex-shrink: 0;
}

.mega-menu__item:hover .mega-menu__item-title svg {
  opacity: 1;
  transform: translateX(0);
}

.mega-menu__item-desc {
  font-size: 14px;
  color: rgba(0, 0, 0, 0.6);
  line-height: 1.6;
}

/* ===========================
   Responsive Design
=========================== */
@media (max-width: 768px) {
  .header,
  .mega-menu__header {
    padding: 12px 16px;
  }

  .header__left,
  .mega-menu__header-left {
    padding: 0 20px;
    height: var(--header-height-mobile);
  }

  .mega-menu__body {
    flex-direction: column;
  }

  .mega-menu__left {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    max-height: 40%;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .mega-menu__category-info {
    padding: var(--space-lg);
    min-height: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .mega-menu__category-info h3 {
    font-size: 24px;
  }

  .mega-menu__category-info p {
    font-size: 14px;
  }

  .mega-menu__nav {
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    padding: var(--space-sm);
    gap: var(--space-xs);
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .mega-menu__nav::-webkit-scrollbar {
    display: none;
  }

  .mega-menu__nav button {
    white-space: nowrap;
    font-size: 14px;
    padding: 10px 16px;
    border-radius: var(--radius-pill);
    flex-shrink: 0;
    line-height: 1.2;
    display: inline-flex;
    align-items: center;
  }

  .mega-menu__nav button::before {
    display: none;
  }

  .mega-menu__nav button[aria-selected="true"] {
    background: var(--color-main);
    color: #FFFFFF;
  }

  /* Mobile: show info-close, hide close-guide */
  .mega-menu__info-close {
    display: inline-flex;
    position: relative;
    bottom: auto;
    right: auto;
    align-self: flex-end;
    margin-top: auto;
    margin-bottom: 20px;
    padding: 8px 12px;
    font-size: 14px;
  }

  .mega-menu__info-close svg {
    width: 14px;
    height: 14px;
  }

  .mega-menu__close-guide {
    display: none;
  }

  .mega-menu__right {
    padding: var(--space-lg);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .mega-menu__items {
    grid-template-columns: 1fr;
  }

  .header__mobile-btn {
    padding: 8px 10px;
  }

  .header__mobile-btn svg {
    width: 24px;
    height: 18px;
  }

  .mega-menu__close {
    font-size: 32px;
    padding: 4px;
  }

  .header__logo img,
  .mega-menu__logo img {
    height: var(--mega-menu-logo-height-mobile);
  }

  /* CTA Pill - Hidden on mobile */
  .cta-pill {
    display: none;
  }
}