/* ========================================
   PAMTTON - Instant Electric Water Heater
   Responsive Factory Website
   ======================================== */

/* ===== CSS Variables ===== */
:root {
  --primary: #0A6EBD;
  --primary-dark: #085288;
  --primary-light: #e8f4fc;
  --accent: #FF6B35;
  --accent-dark: #e55525;
  --dark: #1a1a2e;
  --gray-900: #2d2d3f;
  --gray-700: #4a4a5e;
  --gray-500: #7a7a8e;
  --gray-300: #d4d4dc;
  --gray-100: #f4f5f7;
  --white: #ffffff;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1280px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Segoe UI', 'Helvetica Neue', Arial, 'PingFang SC', sans-serif;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Section Title ===== */
.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title .subtitle {
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
  display: inline-block;
}

.section-title h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-title p {
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
}

.section-title .divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  margin: 20px auto 0;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(10, 110, 189, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(10, 110, 189, 0.5);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.35);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 107, 53, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.5);
}

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

.btn-lg {
  padding: 18px 40px;
  font-size: 1.1rem;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-lg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.logo {
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.logo img {
  height: 52px;
  width: auto;
  max-width: 220px;
  display: block;
}

@media (max-width: 768px) {
  .logo img {
    height: 42px;
    max-width: 180px;
  }
}

.nav-menu {
  display: flex;
  gap: 36px;
  align-items: center;
}

.nav-menu a {
  color: var(--gray-700);
  font-weight: 500;
  font-size: 1rem;
  position: relative;
  padding: 4px 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

.header-cta {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white) !important;
  padding: 10px 24px !important;
  border-radius: var(--radius);
  font-weight: 600;
}

.header-cta::after {
  display: none !important;
}

.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
}

/* Language switcher */
.lang-switcher {
  position: relative;
}

.lang-current {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
  padding: 6px 12px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.lang-current:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 140px;
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
  z-index: 1001;
}

.lang-switcher:hover .lang-dropdown,
.lang-switcher:focus-within .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown a {
  display: block;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--gray-700);
  font-size: 0.9rem;
  font-weight: 500;
}

.lang-dropdown a:hover,
.lang-dropdown a.active {
  background: var(--gray-100);
  color: var(--primary);
}

.lang-dropdown a.active {
  font-weight: 600;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.menu-toggle span {
  width: 26px;
  height: 3px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

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

/* ===== Hero Slider ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero-slider {
  position: absolute;
  inset: 0;
  height: 100%;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
  display: flex;
  align-items: center;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-slide::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.65) 0%, rgba(10, 110, 189, 0.4) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 0 24px;
  margin-left: 5%;
}

.hero-content .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--white);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 20px;
  text-shadow: 0 2px 30px rgba(0, 0, 0, 0.3);
}

.hero-content p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  line-height: 1.7;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.2);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Slider dots */
.hero-dots {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 10;
}

.hero-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: var(--transition);
}

.hero-dots .dot.active {
  background: var(--white);
  width: 36px;
  border-radius: 6px;
}

/* Slider arrows */
.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition);
}

.hero-arrow:hover {
  background: rgba(255, 255, 255, 0.3);
}

.hero-arrow.prev { left: 30px; }
.hero-arrow.next { right: 30px; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 100px;
  right: 40px;
  z-index: 10;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.75rem;
  text-align: center;
  animation: bounce 2s infinite;
}

.scroll-indicator .line {
  width: 2px;
  height: 40px;
  background: rgba(255, 255, 255, 0.3);
  margin: 8px auto 0;
  border-radius: 1px;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}

/* ===== Trust Bar ===== */
.trust-bar {
  background: var(--dark);
  padding: 28px 0;
}

.trust-bar-inner {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
  font-weight: 500;
}

.trust-item .trust-icon {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

/* ===== About Section ===== */
.about {
  padding: 100px 0;
  background: var(--gray-100);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.about-image .experience-badge {
  position: absolute;
  bottom: -30px;
  right: -20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  padding: 28px 36px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.about-image .experience-badge .num {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
}

.about-image .experience-badge .label {
  font-size: 0.85rem;
  margin-top: 4px;
}

.about-text .subtitle {
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.about-text h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 24px;
  line-height: 1.3;
}

.about-text p {
  color: var(--gray-700);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-features {
  margin: 28px 0;
}

.about-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  color: var(--gray-700);
}

.about-features li::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* ===== Products Section ===== */
.products {
  padding: 100px 0;
  background: var(--white);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--gray-100);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.product-card .product-image {
  aspect-ratio: 1;
  background: var(--gray-100);
  overflow: hidden;
  position: relative;
}

.product-card .product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 20px;
  transition: transform 0.5s;
}

.product-card:hover .product-image img {
  transform: scale(1.08);
}

.product-card .product-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent);
  color: var(--white);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

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

.product-card .product-category {
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.product-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.product-card .product-desc {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.5;
}

.product-card .product-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.product-card .product-specs span {
  background: var(--gray-100);
  color: var(--gray-700);
  padding: 4px 10px;
  border-radius: 50px;
  font-size: 0.78rem;
}

.product-card .product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
}

.product-card .product-link:hover {
  color: var(--accent);
  gap: 10px;
}

/* ===== Stats Section ===== */
.stats {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--dark) 0%, #0d1b3e 100%);
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('images/banner-3.jpg') center/cover;
  opacity: 0.1;
}

.stats-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-item .stat-num {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.stat-item .stat-num .suffix {
  font-size: 0.5em;
  color: var(--accent);
}

.stat-item .stat-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
  font-weight: 500;
}

.stat-item .stat-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

/* ===== Why Choose Us ===== */
.why-us {
  padding: 100px 0;
  background: var(--white);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 30px;
}

.why-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius-lg);
  background: var(--gray-100);
  transition: var(--transition);
  border: 2px solid transparent;
}

.why-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
  transform: translateY(-4px);
}

.why-card .why-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--white);
}

.why-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.why-card p {
  color: var(--gray-500);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== Factory Section ===== */
.factory {
  padding: 100px 0;
  background: var(--gray-100);
}

.factory-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.factory-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.factory-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.factory-gallery img:hover {
  transform: scale(1.03);
}

.factory-gallery img:first-child {
  grid-column: span 2;
  height: 280px;
}

.factory-gallery img:nth-child(2),
.factory-gallery img:nth-child(3) {
  height: 200px;
}

.factory-text .subtitle {
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.factory-text h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 24px;
  line-height: 1.3;
}

.factory-text p {
  color: var(--gray-700);
  margin-bottom: 16px;
  line-height: 1.8;
}

.factory-list {
  margin: 28px 0;
}

.factory-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--gray-700);
}

.factory-list li .icon {
  width: 36px;
  height: 36px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.factory-list li .text strong {
  display: block;
  color: var(--dark);
  font-size: 1rem;
  margin-bottom: 2px;
}

.factory-list li .text span {
  color: var(--gray-500);
  font-size: 0.9rem;
}

/* ===== Certifications ===== */
.certifications {
  padding: 80px 0;
  background: var(--white);
  text-align: center;
}

.cert-badges {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 60px;
  margin-top: 40px;
}

.cert-badge {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--gray-100);
  border: 3px solid var(--gray-300);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.cert-badge:hover {
  border-color: var(--primary);
  transform: scale(1.05);
}

.cert-badge .cert-name {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--dark);
}

.cert-badge .cert-sub {
  font-size: 0.65rem;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ===== CTA Banner ===== */
.cta-banner {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('images/banner-1.jpg') center/cover;
  opacity: 0.15;
}

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

.cta-banner h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.1rem;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.cta-banner .btn:hover {
  background: var(--accent);
  color: var(--white);
  transform: translateY(-2px);
}

/* ===== Contact Section ===== */
.contact {
  padding: 100px 0;
  background: var(--gray-100);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 24px;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-detail .icon {
  width: 48px;
  height: 48px;
  background: var(--white);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.contact-detail .text strong {
  display: block;
  color: var(--dark);
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.contact-detail .text span {
  color: var(--gray-500);
  font-size: 0.95rem;
}

.contact-form {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-form h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.contact-form .form-sub {
  color: var(--gray-500);
  font-size: 0.95rem;
  margin-bottom: 28px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  background: var(--gray-100);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--white);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand .logo {
  color: var(--white);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.1rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-col ul li a:hover {
  color: var(--white);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom .footer-links {
  display: flex;
  gap: 24px;
}

.footer-bottom .footer-links a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom .footer-links a:hover {
  color: var(--white);
}

/* ===== WhatsApp Float ===== */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: auto;
  min-width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 18px;
  color: var(--white);
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: var(--transition);
  animation: pulse 2s infinite;
  text-decoration: none;
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.whatsapp-float:hover {
  transform: scale(1.05);
  background: #128C7E;
}

@keyframes pulse {
  0% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.7); }
  100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
}

/* ===== Scroll Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .about-inner,
  .factory-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image .experience-badge {
    bottom: 20px;
    right: 20px;
  }

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

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

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 350px;
    height: 100vh;
    background: var(--dark);
    flex-direction: column;
    justify-content: center;
    gap: 30px;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
  }

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

  .nav-menu a {
    font-size: 1.2rem;
  }

  .header.scrolled .nav-menu a {
    color: rgba(255, 255, 255, 0.85);
  }

  .hero-content {
    margin: 0 auto;
    text-align: center;
    max-width: 90%;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-arrow {
    display: none;
  }

  .trust-bar-inner {
    flex-direction: column;
    gap: 16px;
  }

  .stats-inner {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .factory-gallery {
    grid-template-columns: 1fr;
  }

  .factory-gallery img:first-child {
    grid-column: span 1;
    height: 220px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .cert-badges {
    gap: 30px;
  }

  .whatsapp-float {
    min-width: 50px;
    height: 50px;
    padding: 0;
    bottom: 20px;
    right: 20px;
    border-radius: 50%;
  }

  .whatsapp-float svg {
    width: 24px;
    height: 24px;
    margin: 0 auto;
  }

  .whatsapp-label {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: 500px;
    height: 90vh;
  }

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

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

  .stats-inner {
    grid-template-columns: 1fr;
  }

  .section-title h2 {
    font-size: 1.5rem;
  }

  .contact-form {
    padding: 24px;
  }

  .scroll-indicator {
    display: none;
  }
}