/* Base Styles */
:root {
  /* Colors */
  --color-navy-50: #f0f5fa;
  --color-navy-100: #dce7f3;
  --color-navy-200: #bfd4ea;
  --color-navy-300: #92b6db;
  --color-navy-400: #6092c9;
  --color-navy-500: #4075b3;
  --color-navy-600: #325d97;
  --color-navy-700: #2a4b7b;
  --color-navy-800: #274166;
  --color-navy-900: #243857;

  --color-coral-50: #fff4ed;
  --color-coral-100: #ffe6d5;
  --color-coral-200: #ffc9ab;
  --color-coral-300: #ffa476;
  --color-coral-400: #ff7641;
  --color-coral-500: #ff4d1a;
  --color-coral-600: #f02e06;
  --color-coral-700: #c72008;

  --color-teal-50: #effcf6;
  --color-teal-100: #d7f5e8;
  --color-teal-200: #b2ead4;
  --color-teal-300: #7fd9b9;
  --color-teal-400: #4bc197;
  --color-teal-500: #2eaa7d;
  --color-teal-600: #208964;

  /* Typography */
  --font-family: Arial, Helvetica, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-24: 6rem;
  --spacing-32: 8rem;

  /* Border Radius */
  --radius-sm: 0.125rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-navy-800);
  background-color: #fff;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button,
input,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

p {
  margin-bottom: var(--spacing-4);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2) var(--spacing-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--color-coral-500);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-coral-600);
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--color-navy-500);
  color: var(--color-navy-600);
}

.btn-outline:hover {
  background-color: var(--color-navy-50);
}

.btn-block {
  display: block;
  width: 100%;
}

/* Header */
.sticky-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  transition: all 0.3s ease;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.logo a {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.logo-text {
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: var(--color-navy-800);
}

/* Desktop Navigation */
.desktop-nav {
  display: none;
}

@media (min-width: 768px) {
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
  }

  .desktop-nav ul {
    display: flex;
    gap: var(--spacing-6);
  }

  .desktop-nav a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-navy-600);
    transition: color 0.3s ease;
  }

  .desktop-nav a:hover {
    color: var(--color-navy-900);
  }
}

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

.language-switcher button {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--color-navy-600);
}

.language-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background-color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-2);
  min-width: 150px;
  z-index: 10;
  display: none;
}

.language-dropdown.active {
  display: block;
}

.language-dropdown a {
  display: block;
  padding: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-navy-600);
  transition: background-color 0.3s ease;
}

.language-dropdown a:hover {
  background-color: var(--color-navy-50);
}

.language-dropdown a.active {
  background-color: var(--color-navy-50);
  color: var(--color-navy-900);
}

/* Mobile Navigation */
.mobile-nav-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.mobile-nav-toggle button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-navy-600);
}

.mobile-menu {
  display: none;
  background-color: white;
  border-bottom: 1px solid var(--color-navy-100);
  box-shadow: var(--shadow-md);
}

.mobile-menu.active {
  display: block;
}

.mobile-menu ul {
  padding: var(--spacing-4) 0;
}

.mobile-menu a {
  display: block;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-navy-600);
}

.mobile-menu a:hover {
  background-color: var(--color-navy-50);
}

@media (min-width: 768px) {
  .mobile-nav-toggle {
    display: none;
  }

  .mobile-menu {
    display: none !important;
  }
}

/* Hero Section */
.pattern-bg {
  background-color: var(--color-navy-50);
  position: relative;
  overflow: hidden;
}


.hero-content {
  display: grid;
  gap: var(--spacing-6);
  padding: var(--spacing-12) 0;
}

.hero-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--spacing-4);
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

@media (min-width: 400px) {
  .hero-buttons {
    flex-direction: row;
  }
}

.hero-image {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
  }
}

/* Section Styles */
.section-light {
  background-color: var(--color-navy-50);
  padding: var(--spacing-12) 0;
}

.section-white {
  background-color: white;
  padding: var(--spacing-12) 0;
}

.section-primary {
  background-color: var(--color-navy-500);
  color: white;
  padding: var(--spacing-12) 0;
}

.section-gradient {
  background: linear-gradient(to bottom, white, var(--color-navy-50));
  padding: var(--spacing-12) 0;
}

.section-header {
  text-align: center;
  max-width: 900px;
  margin: 0 auto var(--spacing-12);
}

.section-header.light {
  color: white;
}

.section-header.light p {
  color: rgba(255, 255, 255, 0.8);
}

.section-header p {
  color: var(--color-navy-600);
  font-size: var(--font-size-lg);
}

/* About Section */
.about-content h4{
  color: var(--color-navy-600);
}
.about-content {
  display: grid;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--spacing-6);
}

.feature-card {
  background-color: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin: 0 auto var(--spacing-4);
  background-color: var(--color-coral-50);
  border-radius: 50%;
  color: var(--color-coral-500);
}

.feature-icon i {
  font-size: 1.5rem;
}

.feature-card h3 {
  margin-bottom: var(--spacing-2);
  color: var(--color-navy-800);
}

.feature-card p {
  color: var(--color-navy-600);
  font-size: var(--font-size-sm);
}

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

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

@media (min-width: 992px) {
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Products Section */
.product-tabs {
  margin-bottom: var(--spacing-12);
}

.tab-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-8);
  background-color: var(--color-navy-100);
  border-radius: var(--radius-md);
  padding: var(--spacing-1);
}

.tab-btn {
  padding: var(--spacing-2);
  border: none;
  background: none;
  cursor: pointer;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

.tab-btn.active {
  background-color: var(--color-navy-600);
  color: white;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--spacing-6);
}

.product-card {
  background-color: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.product-image {
  display: center;
  position: relative;
  aspect-ratio: auto;
  overflow: hidden;
}

.product-image img {
	
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.product-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  display: flex;
  align-items: flex-end;
  padding: var(--spacing-4);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.product-overlay h3 {
  color: white;
  margin-bottom: 0;
}

.product-info {
  padding: var(--spacing-4);
  background-color: white;
}

.product-info h3 {
  margin-bottom: var(--spacing-2);
  color: var(--color-navy-800);
}

.product-info p {
  color: var(--color-navy-600);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

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

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

@media (min-width: 992px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Factory Section */
.wave-pattern {
  background-color: var(--color-navy-500);
  
}

.factory-content {
  display: grid;
  gap: var(--spacing-8);
}

.factory-text h3 {
  color: white;
  text-align: center;
}

.factory-text p {
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-4);
  margin-top: var(--spacing-6);
}

.stat-card {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  text-align: center;
  backdrop-filter: blur(8px);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-coral-400);
}

.stat-card p {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0;
}

.gallery-grid {
  display: flex;
  justify-content: center;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-4);
}

.gallery-item {
  position: relative;
  justify-content: center;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.gallery-item::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(255, 77, 26, 0.2), rgba(46, 170, 125, 0.2));
  z-index: 1;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
/* Căn giữa ảnh trong phần xưởng sản xuất */
.factory-gallery {
  display: flex;
  justify-content: center;
  gap: 1rem;
}
.factory-gallery img {
  display: block;
  margin: 0 auto;
}

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

/* Why Us Section */
.reasons-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--spacing-6);
}

.reason-card {
  background-color: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
  position: relative;
}

.reason-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(to right, var(--color-teal-400), var(--color-navy-400));
}

.reason-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.reason-icon {
  color: var(--color-teal-500);
  margin-bottom: var(--spacing-2);
}

.reason-icon i {
  font-size: 2rem;
}

.reason-card h3 {
  color: var(--color-navy-800);
  margin-bottom: var(--spacing-2);
}

.reason-card p {
  color: var(--color-navy-600);
  margin-bottom: 0;
}

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

@media (min-width: 992px) {
  .reasons-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Contact Section */
.contact-content {
  display: grid;
  gap: var(--spacing-8);
}

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

.contact-form-card::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(to right, var(--color-coral-500), var(--color-teal-500));
}

.card-header {
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--color-navy-100);
}

.card-header h3 {
  color: var(--color-navy-800);
  margin-bottom: var(--spacing-2);
}

.card-header p {
  color: var(--color-navy-600);
  margin-bottom: 0;
}

.card-body {
  padding: var(--spacing-6);
}

.contact-form {
  display: grid;
  gap: var(--spacing-4);
}

.form-group {
  display: grid;
  gap: var(--spacing-2);
}

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-navy-700);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  border: 1px solid var(--color-navy-200);
  border-radius: var(--radius-md);
  background-color: white;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-navy-500);
  box-shadow: 0 0 0 2px rgba(64, 117, 179, 0.2);
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--spacing-4);
}

.form-success.active {
  display: block;
}

.contact-info {
  display: grid;
  gap: var(--spacing-6);
}

.info-section {
  margin-bottom: var(--spacing-6);
}

.info-section h3 {
  color: var(--color-navy-800);
  margin-bottom: var(--spacing-4);
}

.info-item {
  display: flex;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
}

.info-item i {
  color: var(--color-teal-500);
  font-size: 1.25rem;
  margin-top: var(--spacing-1);
}

.info-item h4 {
  font-weight: 600;
  color: var(--color-navy-800);
  margin-bottom: var(--spacing-1);
}

.info-item p {
  color: var(--color-navy-600);
  margin-bottom: 0;
}

.social-links {
  
  display: flex;
  gap: var(--spacing-3);
 
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  color: white;
  transition: opacity 0.3s ease;
  -webkit-border-radius: 50%;
  -moz-border-radius: 50%;
  -ms-border-radius: 50%;
  -o-border-radius: 50%;
}

.social-link:hover {
  opacity: 0.9;
}

.social-link.facebook {
  background-color: #1877f2;
}

.social-link.instagram {
  background-color: #e4405f;
}

.social-link.zalo {
  background-color: #0068ff;
}

.business-hours {
  display: grid;
  gap: var(--spacing-2);
}

.hours-item {
  display: flex;
  justify-content: space-between;
  color: var(--color-navy-600);
}

@media (min-width: 992px) {
  .contact-content {
    grid-template-columns: 1fr 1fr;
  }
}

/* Footer */
.footer {
  color: white;
  padding-top: var(--spacing-8);
}

.footer-content {
  display: grid;
  gap: var(--spacing-6);
  padding-bottom: var(--spacing-6);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
}

.footer-logo span {
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.footer-info p {
  color: rgba(255, 255, 255, 0.8);
}

.footer-social {
  display: flex;
  gap: var(--spacing-3);
  margin-top: var(--spacing-4);
}

.footer-social a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.3s ease;
}

.footer-social a:hover {
  color: white;
}

.footer h3 {
  color: var(--color-coral-400);
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-lg);
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: white;
}

.footer-contact address,
.footer-contact p {
  color: rgba(255, 255, 255, 0.8);
  font-style: normal;
}

.footer-hours p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-1);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--spacing-6) 0;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

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

@media (min-width: 992px) {
  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Scroll to Top Button */
.scroll-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 50;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background-color: var(--color-coral-500);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  background-color: var(--color-coral-600);
}
.dropdown {
  position: relative;
  display: inline-block;
}

.dropbtn {
  background-color: #3498db;
  color: white;
  padding: 12px;
  font-size: 16px;
  border: none;
  cursor: pointer;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: white;
  min-width: 200px;
  box-shadow: 0px 8px 16px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: black;
  padding: 10px 16px;
  text-decoration: none;
}

.dropdown-content a:hover {
  background-color: #f1f1f1;
}

.dropdown-content img {
  width: 20px;
  height: 20px;
  margin-left: 5px;
  margin-right: 15px;
}

.dropdown:hover .dropdown-content {
  display: block;
}