/**
 * Teaform 茶予 - Layout Styles
 * Header, footer, and layout-specific styles
 */

/* ============================================
     HEADER / NAVIGATION
  ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  height: var(--header-height);
  background-color: transparent;
  transition: background-color var(--transition-base), backdrop-filter var(--transition-base);
}

.header.scrolled {
  background-color: var(--header-scrolled-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

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

@media (min-width: 1024px) {
  .header-container {
    padding: 0 var(--page-margin-lg);
  }
}

@media (min-width: 1280px) {
  .header-container {
    padding: 0 var(--page-margin-xl);
  }
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  text-decoration: none;
}

.logo-img {
  height: 60px;
  width: auto;
  object-fit: contain;
  /* Add drop shadow for better contrast against hero background */
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5)) drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
  transition: filter var(--transition-base);
}

/* When header is scrolled, adjust logo image shadow */
.header.scrolled .logo-img {
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.logo-text {
  font-family: var(--font-family-cn-serif);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  /* Strong dark stroke for contrast against light hero background */
  -webkit-text-stroke: 2px rgba(20, 30, 40, 1);
  paint-order: stroke fill;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  transition: all var(--transition-base);
}

.logo-text-en {
  font-family: var(--font-family-en);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  /* Strong dark stroke for contrast against light hero background */
  -webkit-text-stroke: 2px rgba(20, 30, 40, 1);
  paint-order: stroke fill;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  transition: all var(--transition-base);
}

/* When header is scrolled, adjust logo text for dark background */
.header.scrolled .logo-text,
.header.scrolled .logo-text-en {
  -webkit-text-stroke: 1.5px rgba(0, 0, 0, 1);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
}

/* ============================================
     MOBILE MENU OVERLAY
  ============================================ */

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: var(--z-modal);
  background-color: var(--color-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-8);
  transform: translateX(100%);
  transition: transform var(--transition-base);
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-close {
  position: absolute;
  top: var(--spacing-6);
  right: var(--spacing-6);
  background: none;
  border: none;
  padding: var(--spacing-2);
  cursor: pointer;
}

.mobile-menu-close svg {
  width: 32px;
  height: 32px;
  stroke: var(--color-secondary);
}

.mobile-nav-link {
  font-family: var(--font-family-cn-serif);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  text-decoration: none;
  opacity: 0;
  transform: translateX(50px);
  transition: all var(--transition-base);
}

.mobile-menu.active .mobile-nav-link {
  opacity: 1;
  transform: translateX(0);
}

.mobile-menu.active .mobile-nav-link:nth-child(1) { transition-delay: 100ms; }
.mobile-menu.active .mobile-nav-link:nth-child(2) { transition-delay: 150ms; }
.mobile-menu.active .mobile-nav-link:nth-child(3) { transition-delay: 200ms; }
.mobile-menu.active .mobile-nav-link:nth-child(4) { transition-delay: 250ms; }
.mobile-menu.active .mobile-nav-link:nth-child(5) { transition-delay: 300ms; }
.mobile-menu.active .mobile-nav-link:nth-child(6) { transition-delay: 350ms; }

.mobile-nav-link:hover {
  color: var(--color-secondary);
}

/* ============================================
     MAIN CONTENT AREA
  ============================================ */

.main {
  width: 100%;
  min-height: 100vh;
}

/* Section with background image */
.section-bg {
  position: relative;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.section-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(67, 89, 106, 0.85);
}

.section-bg-content {
  position: relative;
  z-index: 1;
}

/* ============================================
     BRAND PHILOSOPHY PILLARS
  ============================================ */

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-8);
}

.philosophy-item {
  text-align: center;
  padding: var(--spacing-8);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.philosophy-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-lg);
}

.philosophy-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-4);
  color: var(--color-secondary);
}

.philosophy-title-cn {
  font-family: var(--font-family-cn-serif);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-2);
}

.philosophy-title-en {
  font-family: var(--font-family-en);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--spacing-4);
}

.philosophy-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* ============================================
     BRAND STORY SECTIONS
  ============================================ */

.story-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
  min-height: 600px;
}

.story-section:nth-child(even) {
  direction: rtl;
}

.story-section:nth-child(even) > * {
  direction: ltr;
}

.story-content {
  padding: var(--spacing-8);
}

.story-number {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-secondary);
  opacity: 0.3;
  margin-bottom: var(--spacing-4);
}

.story-title {
  font-family: var(--font-family-cn-serif);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-6);
}

.story-text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-6);
}

.story-quote {
  font-family: var(--font-family-cn-serif);
  font-size: var(--font-size-xl);
  font-style: italic;
  color: var(--color-secondary);
  border-left: 4px solid var(--color-secondary);
  padding-left: var(--spacing-4);
}

.story-image {
  width: 100%;
  height: 500px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.story-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================
     PRODUCT GALLERY
  ============================================ */

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

.product-card {
  position: relative;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
}

.product-image {
  width: 100%;
  height: 400px;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-secondary-opacity-90);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.product-card:hover .product-overlay {
  opacity: 1;
}

.product-overlay-text {
  font-family: var(--font-family-cn-serif);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
}

.product-info {
  padding: var(--spacing-6);
}

.product-name {
  font-family: var(--font-family-cn-serif);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-2);
}

.product-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* ============================================
     NEWS CARDS
  ============================================ */

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

.news-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition-base);
}

.news-card:hover {
  box-shadow: var(--card-shadow-lg);
}

.news-image {
  width: 100%;
  height: 240px;
  overflow: hidden;
}

.news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-content {
  padding: var(--spacing-6);
}

.news-date {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-2);
}

.news-title {
  font-family: var(--font-family-cn-serif);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-3);
}

.news-excerpt {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-4);
}

.news-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  color: var(--color-secondary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

/* ============================================
     CONTACT/INFO SECTION
  ============================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
}

.info-card {
  background-color: var(--color-gray-50);
  padding: var(--spacing-8);
  border-radius: var(--radius-lg);
}

.info-card-title {
  font-family: var(--font-family-cn-serif);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-6);
}

.info-item {
  display: flex;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

.info-icon {
  width: 24px;
  height: 24px;
  color: var(--color-secondary);
  flex-shrink: 0;
}

.info-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-1);
}

.info-value {
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
}

/* ============================================
     VISION GRID
  ============================================ */

.vision-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-10);
}

.vision-item {
  text-align: center;
}

.vision-number {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-4);
  background-color: var(--color-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
}

/* ============================================
     RESPONSIVE LAYOUT
  ============================================ */

@media (max-width: 1024px) {
  .philosophy-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .story-section {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }

  .story-section:nth-child(even) {
    direction: ltr;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
  }

  .vision-grid {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .story-image {
    height: 300px;
  }

  .product-image {
    height: 300px;
  }

  /* Header Mobile Adjustments */
  .header {
    height: 60px;
  }

  .logo-text {
    font-size: var(--font-size-lg) !important;
  }

  .logo-text-en {
    font-size: var(--font-size-base) !important;
  }

  .logo-img {
    height: 40px;
  }

  /* Container Mobile Adjustments */
  .container {
    padding: 0 var(--spacing-4);
  }

  /* Section spacing mobile */
  .section {
    padding: var(--spacing-12) 0;
  }

  .section-lg {
    padding: var(--spacing-16) 0;
  }
}

/* Extra Small Screens (480px and below) */
@media (max-width: 480px) {
  .logo-text {
    font-size: var(--font-size-base) !important;
  }

  .logo-text-en {
    font-size: var(--font-size-sm) !important;
  }

  .logo-img {
    height: 35px;
  }

  .footer .logo-text-en {
    font-size: var(--font-size-lg) !important;
  }

  .footer .logo-text {
    font-size: var(--font-size-base) !important;
  }

  .footer-contact-item {
    font-size: var(--font-size-xs);
  }

  .footer-icon {
    width: 12px;
    height: 12px;
  }

  .footer-links {
    gap: var(--spacing-2);
  }

  .footer-link {
    font-size: var(--font-size-sm);
  }

  .footer-icp {
    font-size: 10px;
  }

  .footer-eco {
    font-size: 10px;
  }

  /* Content sections mobile improvements */
  .story-content {
    padding: var(--spacing-6);
  }

  .story-number {
    font-size: var(--font-size-4xl) !important;
  }

  .story-title {
    font-size: var(--font-size-xl) !important;
  }

  .story-text {
    font-size: var(--font-size-sm) !important;
  }

  .story-image {
    height: 250px !important;
  }

  .product-image {
    height: 250px !important;
  }

  /* Section headings mobile */
  .section-title,
  h2 {
    font-size: var(--font-size-2xl) !important;
  }

  .section-subtitle,
  h3 {
    font-size: var(--font-size-xl) !important;
  }
}