/* ============================================================
   NATURE WOOD BOARD MANUFACTURER — Global Stylesheet
   European & American Natural Minimalist Industrial Style
   ============================================================ */

/* --- Design Tokens --- */
:root {
  --color-primary: #2C3E50;
  --color-primary-dark: #1a2a38;
  --color-primary-light: #3d5266;
  --color-accent: #A67C52;
  --color-accent-hover: #8B6540;
  --color-industrial: #607D8B;
  --color-industrial-light: #7a99a7;
  --color-bg: #F5F2EE;
  --color-bg-warm: #EDE8E2;
  --color-gray: #71717A;
  --color-gray-light: #9CA3AF;
  --color-dark: #1F2937;
  --color-white: #FFFFFF;
  --color-border: #E5E0DA;
  --font-heading: 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 240ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 280ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: clamp(32px, 5vw, 48px); }
h2 { font-size: clamp(28px, 4vw, 40px); }
h3 { font-size: clamp(20px, 3vw, 28px); }
h4 { font-size: clamp(18px, 2.5vw, 24px); }

.section-subtitle {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 8px;
}

.section-desc {
  font-size: 16px;
  color: var(--color-gray);
  max-width: 640px;
  line-height: 1.6;
}

.text-accent { color: var(--color-accent); }
.text-industrial { color: var(--color-industrial); }

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

@media (min-width: 768px) {
  .nav-container { padding: 0 32px; height: 80px; }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  color: var(--color-primary);
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.nav-logo .logo-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 18px;
  flex-shrink: 0;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 4px;
  list-style: none;
}

@media (min-width: 1024px) {
  .nav-links { display: flex; }
}

.nav-links a {
  display: block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-gray);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  background: rgba(44,62,80,0.06);
}

.nav-links a.active { font-weight: 600; }

.nav-actions {
  display: none;
  align-items: center;
  gap: 12px;
}

@media (min-width: 1024px) {
  .nav-actions { display: flex; }
}

.mobile-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
  z-index: 1001;
}

@media (min-width: 1024px) {
  .mobile-toggle { display: none; }
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(16px);
  z-index: 999;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu a {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-primary);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-menu a:hover { background: rgba(44,62,80,0.06); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  letter-spacing: -0.2px;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 16px rgba(44,62,80,0.35);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn-accent:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 16px rgba(166,124,82,0.35);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-outline-light {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255,255,255,0.5);
}

.btn-outline-light:hover {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn-lg { padding: 14px 36px; font-size: 15px; }
.btn-sm { padding: 8px 20px; font-size: 13px; }

/* --- Hero / Banner --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #1a2a38 50%, #0f1a24 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(166,124,82,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 30%, rgba(96,125,139,0.1) 0%, transparent 60%);
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255,255,255,0.5) 2px, rgba(255,255,255,0.5) 3px),
    repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(255,255,255,0.5) 2px, rgba(255,255,255,0.5) 3px);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 120px 16px 80px;
}

@media (min-width: 768px) {
  .hero-content { padding: 140px 32px 100px; }
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(166,124,82,0.2);
  border: 1px solid rgba(166,124,82,0.3);
  border-radius: 50px;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-title {
  color: var(--color-white);
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.1;
  max-width: 720px;
  margin-bottom: 20px;
}

.hero-title span {
  color: var(--color-accent);
}

.hero-desc {
  color: rgba(255,255,255,0.7);
  font-size: 17px;
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat h4 {
  color: var(--color-accent);
  font-size: 32px;
  margin-bottom: 4px;
}

.hero-stat p {
  color: rgba(255,255,255,0.5);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* --- Section Layout --- */
.section {
  padding: 48px 0;
}

@media (min-width: 768px) {
  .section { padding: 80px 0; }
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 768px) {
  .container { padding: 0 32px; }
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .section-header { margin-bottom: 64px; }
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

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

.card-body { padding: 28px; }

.card-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(166,124,82,0.1);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 12px;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1.3;
}

.card-desc {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

/* --- Product Card (special styling) --- */
.product-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
}

.product-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
  border-color: transparent;
}

.product-card .card-img {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #f5f2ee, #ede5db);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.product-card .wood-texture {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background: repeating-linear-gradient(
    2deg,
    transparent,
    transparent 3px,
    var(--color-accent) 3px,
    var(--color-accent) 4px
  );
}

.product-card .card-body {
  padding: 24px;
}

.product-specs {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.product-spec {
  font-size: 12px;
  color: var(--color-gray);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* --- Feature / Advantage Cards --- */
.feature-card {
  text-align: center;
  padding: 36px 28px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(44,62,80,0.06), rgba(166,124,82,0.08));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--color-accent);
}

.feature-card h4 {
  font-size: 18px;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

/* --- Stats Counter Section --- */
.stats-section {
  background: var(--color-primary);
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(166,124,82,0.1) 0%, transparent 70%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

@media (min-width: 768px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

.stat-item {
  text-align: center;
  position: relative;
  z-index: 2;
}

.stat-item .stat-number {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -1px;
}

.stat-item .stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 4px;
}

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-accent), #8B6540);
  padding: 60px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 40px,
    rgba(255,255,255,0.02) 40px,
    rgba(255,255,255,0.02) 80px
  );
}

.cta-banner * { position: relative; z-index: 1; }

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: 16px;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  font-size: 16px;
}

/* --- Testimonials / Cases --- */
.case-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

.case-card .card-img {
  aspect-ratio: 16/10;
}

.case-card .card-body {
  padding: 24px;
}

.case-location {
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* --- News Card --- */
.news-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

.news-card .card-img { aspect-ratio: 16/10; }

.news-card .card-body { padding: 24px; }

.news-meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--color-gray-light);
  margin-bottom: 8px;
}

/* --- Page Banner (inner pages) --- */
.page-banner {
  background: linear-gradient(135deg, var(--color-primary), #1a2a38);
  padding: 100px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(166,124,82,0.08) 0%, transparent 70%);
}

.page-banner * { position: relative; z-index: 1; }

.page-banner h1 {
  color: var(--color-white);
  font-size: clamp(28px, 5vw, 44px);
  margin-bottom: 12px;
}

.page-banner .breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}

.page-banner .breadcrumb a:hover { color: var(--color-accent); }

.page-banner .breadcrumb .separator { font-size: 12px; opacity: 0.4; }

/* --- About Page --- */
.about-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image-wrapper img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.about-experience-badge {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: var(--color-accent);
  color: var(--color-white);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.about-experience-badge .years {
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
}

.about-experience-badge .text {
  font-size: 12px;
  opacity: 0.9;
  letter-spacing: 1px;
}

/* --- Timeline --- */
.timeline { position: relative; padding-left: 24px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: '';
  position: absolute;
  left: -29px; top: 4px;
  width: 12px; height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-white);
  box-shadow: var(--shadow-sm);
}

.timeline-year {
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 1px;
}

/* --- Product Page --- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  background: var(--color-white);
  color: var(--color-gray);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* --- Detail Page --- */
.product-gallery-main {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #f5f2ee, #ede5db);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.product-thumbs {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.product-thumb {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-sm);
  background: var(--color-white);
  border: 2px solid transparent;
  cursor: pointer;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.product-thumb:hover,
.product-thumb.active {
  border-color: var(--color-accent);
}

.spec-table { width: 100%; border-collapse: collapse; }

.spec-table tr {
  border-bottom: 1px solid var(--color-border);
}

.spec-table tr:last-child { border-bottom: none; }

.spec-table td {
  padding: 14px 16px;
  font-size: 14px;
}

.spec-table td:first-child {
  color: var(--color-gray);
  font-weight: 500;
  width: 40%;
}

.spec-table td:last-child {
  color: var(--color-dark);
  font-weight: 600;
}

/* --- Technology Page --- */
.tech-process-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
}

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

.tech-process-card .step-number {
  font-family: var(--font-heading);
  font-size: 56px;
  font-weight: 800;
  color: rgba(166,124,82,0.15);
  position: absolute;
  top: 16px;
  right: 24px;
  line-height: 1;
}

.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(96,125,139,0.1);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-industrial);
  font-weight: 600;
}

/* --- Inquiry Form --- */
.inquiry-form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
  .inquiry-form { padding: 48px; }
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
  letter-spacing: 0.2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-dark);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(166,124,82,0.1);
  background: var(--color-white);
}

.form-textarea { min-height: 120px; resize: vertical; }

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2371717A' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
}

/* --- Contact Page --- */
.contact-info-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: all var(--transition-base);
}

.contact-info-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.contact-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: rgba(44,62,80,0.06);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--color-accent);
}

/* --- Floating Customer Service --- */
.floating-service {
  position: fixed;
  right: 16px;
  bottom: 120px;
  z-index: 998;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.floating-item {
  position: relative;
  width: 48px;
  height: 48px;
  background: var(--color-white);
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 20px;
  color: var(--color-primary);
}

.floating-item:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: scale(1.1);
}

.floating-tooltip {
  position: absolute;
  right: 60px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-primary);
  color: var(--color-white);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
}

.floating-item:hover .floating-tooltip {
  opacity: 1;
}

.floating-tooltip::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  border-left: 6px solid var(--color-primary);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

.floating-qr {
  position: absolute;
  right: 60px;
  bottom: 0;
  width: 160px;
  background: var(--color-white);
  padding: 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
}

.floating-item.wechat:hover .floating-qr {
  opacity: 1;
}

.floating-qr .qr-placeholder {
  width: 100%;
  aspect-ratio: 1;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  font-size: 48px;
  color: var(--color-gray-light);
}

.floating-qr span {
  font-size: 12px;
  color: var(--color-gray);
}

/* --- Footer --- */
.footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

.footer h5 {
  color: var(--color-white);
  font-size: 15px;
  margin-bottom: 20px;
  letter-spacing: -0.2px;
}

.footer p,
.footer a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 2;
  transition: color var(--transition-fast);
}

.footer a:hover { color: var(--color-accent); }

.footer-bottom {
  margin-top: 48px;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom { flex-direction: row; justify-content: space-between; }
}

/* --- Newsletter --- */
.newsletter-form {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.newsletter-form input {
  flex: 1;
  padding: 10px 16px;
  font-size: 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  outline: none;
  transition: border-color var(--transition-fast);
}

.newsletter-form input:focus {
  border-color: var(--color-accent);
}

.newsletter-form input::placeholder {
  color: rgba(255,255,255,0.3);
}

/* --- Scroll Animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children animation delays */
.stagger-1 { transition-delay: 0ms; }
.stagger-2 { transition-delay: 100ms; }
.stagger-3 { transition-delay: 200ms; }
.stagger-4 { transition-delay: 300ms; }
.stagger-5 { transition-delay: 400ms; }
.stagger-6 { transition-delay: 500ms; }

/* --- Utility --- */
.wood-bg-light {
  background: linear-gradient(135deg, #f5f2ee, #ede5db);
}

.wood-bg-warm {
  background: linear-gradient(135deg, #EDE8E2, #e0d8ce);
}

.texture-overlay {
  position: relative;
}

.texture-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 4px,
    rgba(166,124,82,0.03) 4px,
    rgba(166,124,82,0.03) 5px
  );
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* --- Responsive Adjustments --- */
@media (max-width: 767px) {
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat h4 { font-size: 24px; }
  .floating-service { right: 8px; bottom: 80px; }
  .floating-item { width: 42px; height: 42px; font-size: 18px; }
}

/* --- Print-friendly --- */
@media print {
  .navbar, .floating-service, .mobile-menu { display: none; }
  body { background: #fff; }
}

/* --- Product detail tabs --- */
.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--color-border); margin-bottom: 24px; }

.tab-btn {
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gray);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover { color: var(--color-primary); }

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* --- Pagination --- */
.pagination {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 48px;
}

.page-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-gray);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.page-btn:hover,
.page-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* --- Back to top --- */
.back-to-top {
  position: fixed;
  right: 16px;
  bottom: 60px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: 997;
  border: none;
  font-size: 18px;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

/* --- Loading Skeleton --- */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg) 25%, #e8e3dd 50%, var(--color-bg) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* --- AOS overrides if using external lib --- */
[data-aos] {
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* --- Image placeholders --- */
.img-placeholder {
  background: linear-gradient(135deg, var(--color-bg), var(--color-bg-warm));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-light);
  font-size: 14px;
}

/* --- Divider --- */
.divider {
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  margin: 0 auto 24px;
  border-radius: 2px;
}

.divider-left {
  margin-left: 0;
}