/* CSS Variables */
:root {
  /* Colors */
  --primary: #1a365d;
  --primary-dark: #0f2744;
  --primary-light: #2c5282;
  --secondary: #c9a227;
  --secondary-light: #d4af37;
  --accent: #e53e3e;

  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f7fafc;
  --gray-100: #edf2f7;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e0;
  --gray-400: #a0aec0;
  --gray-500: #718096;
  --gray-600: #4a5568;
  --gray-700: #2d3748;
  --gray-800: #1a202c;
  --gray-900: #171923;

  /* Gradients */
  --gradient-primary: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-light) 100%
  );
  --gradient-gold: linear-gradient(
    135deg,
    var(--secondary) 0%,
    var(--secondary-light) 100%
  );
  --gradient-hero: linear-gradient(
    135deg,
    rgba(26, 54, 93, 0.95) 0%,
    rgba(15, 39, 68, 0.9) 100%
  );

  /* Typography */
  --font-heading: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Container */
  --container-max: 1280px;
  --container-padding: 1.5rem;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--gray-700);
  background-color: var(--white);
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--gray-900);
}

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

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

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* Preloader */
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition:
    opacity 0.5s ease,
    visibility 0.5s ease;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader {
  width: 50px;
  height: 50px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;

  padding: 0 var(--container-padding);
}

/* Typography Utilities */
.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

.gradient-text {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.highlight {
  color: var(--secondary);
}

/* Section Headers */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-12);
}

.section-subtitle {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--secondary);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
  color: var(--gray-900);
}

.section-description {
  font-size: var(--text-lg);
  color: var(--gray-500);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--gradient-gold);
  color: var(--gray-900);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

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

.btn-white:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
}

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

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

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all var(--transition-base);
  padding: var(--space-4) 0;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  padding: var(--space-2) 0;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--white);
}

.logo-text {
  font-size: clamp(0.875rem, 2.5vw, 1.25rem);
  line-height: 1.2;
}

.logo img {
  height: clamp(28px, 5vw, 40px);
  width: auto;
  display: block;
  transition: height var(--transition-base);
}

.header.scrolled .logo {
  color: var(--primary);
}

.header.scrolled .logo-text {
  font-size: clamp(0.8rem, 2.2vw, 1.125rem);
}

.header.scrolled .logo img {
  height: clamp(24px, 4.5vw, 36px);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-gold);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-900);
}

.logo-text .highlight {
  color: var(--secondary);
}

.header.scrolled .logo-text .highlight {
  color: var(--secondary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  position: relative;
  padding: var(--space-2) 0;
}

.header.scrolled .nav-link {
  color: var(--gray-700);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: width var(--transition-base);
}

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

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

.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active {
  color: var(--secondary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition-base);
}

.header.scrolled .hamburger span {
  background: var(--primary);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--space-24) 0 var(--space-12);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("/images/bg/bg.jpg") center/cover no-repeat;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-hero);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  color: var(--secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-6);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
  font-size: var(--text-5xl);
  color: var(--white);

  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero-description {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-8);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--white);
}

.stat-suffix {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--secondary);
}

.stat-label {
  display: block;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--space-1);
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-sm);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* Features Section */
.features {
  padding: var(--space-24) 0;
  background: var(--gray-50);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.feature-card {
  background: var(--white);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.feature-icon {
  width: 70px;
  height: 70px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
}

.feature-icon i {
  font-size: var(--text-2xl);
  color: var(--white);
}

.feature-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.feature-description {
  color: var(--gray-500);
  font-size: var(--text-sm);
}

/* Vision Mission Section */
.vision-mission {
  padding: var(--space-24) 0;
  background: var(--white);
}

.vision-mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

.vision-card,
.mission-card {
  background: var(--white);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

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

.vision-icon,
.mission-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.vision-icon i,
.mission-icon i {
  font-size: var(--text-xl);
  color: var(--white);
}

.vision-title,
.mission-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  color: var(--gray-900);
}

.vision-description {
  color: var(--gray-600);
  font-size: var(--text-base);
  line-height: 1.6;
}

.mission-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mission-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  color: var(--gray-600);
  font-size: var(--text-base);
  line-height: 1.6;
}

.mission-list li i {
  color: var(--primary);
  margin-top: 2px;
  flex-shrink: 0;
}

/* About Preview Section */
.about-preview {
  padding: var(--space-24) 0;
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-images {
  position: relative;
}

.about-image-main {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-image-main img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.about-image-secondary {
  position: absolute;
  bottom: -30px;
  right: -30px;
  width: 250px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  border: 5px solid var(--white);
}

.about-image-secondary img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.experience-badge {
  position: absolute;
  top: 30px;
  left: -30px;
  background: var(--gradient-gold);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.exp-number {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
}

.exp-text {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-800);
  text-transform: uppercase;
}

.about-content .section-subtitle {
  margin-bottom: var(--space-2);
}

.about-content .section-title {
  margin-bottom: var(--space-6);
}

.about-text {
  color: var(--gray-600);
  margin-bottom: var(--space-4);
  line-height: 1.8;
}

.about-list {
  margin: var(--space-6) 0;
}

.about-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  color: var(--gray-700);
}

.about-list i {
  color: var(--secondary);
  font-size: var(--text-lg);
}

/* Services Section */
.services {
  padding: var(--space-24) 0;
  background: var(--gray-50);
}

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

.service-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.service-image {
  overflow: hidden;
}

.service-image img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.service-card:hover .service-image img {
  transform: scale(1.1);
}

.service-content {
  padding: var(--space-6);
}

.service-content h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.service-content p {
  color: var(--gray-500);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--primary);
  font-weight: 500;
  font-size: var(--text-sm);
}

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

/* Projects Preview Section */
.projects-preview {
  padding: var(--space-24) 0;
  background: var(--white);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.project-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.project-card.large {
  grid-column: span 2;
}

.project-image {
  position: relative;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 350px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card.large .project-image img {
  height: 400px;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to top,
    rgba(26, 54, 93, 0.9) 0%,
    transparent 60%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-6);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-category {
  display: inline-block;
  background: var(--secondary);
  color: var(--gray-900);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.project-overlay h3 {
  color: var(--white);
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

/* Testimonials Section */
.testimonials {
  padding: var(--space-24) 0;
  background: var(--gray-50);
}

.testimonials-slider {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.testimonial-card {
  display: none;
  background: var(--white);
  padding: var(--space-10);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

.testimonial-card.active {
  display: block;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.testimonial-rating {
  color: var(--secondary);
  margin-bottom: var(--space-4);
}

.testimonial-text {
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--gray-700);
  margin-bottom: var(--space-6);
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.testimonial-author img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info h4 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-1);
}

.author-info span {
  font-size: var(--text-sm);
  color: var(--gray-500);
}

.testimonial-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.testimonial-prev,
.testimonial-next {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--white);
  box-shadow: var(--shadow-md);
  color: var(--primary);
  transition: all var(--transition-base);
}

.testimonial-prev:hover,
.testimonial-next:hover {
  background: var(--primary);
  color: var(--white);
}

.testimonial-dots {
  display: flex;
  gap: var(--space-2);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gray-300);
  cursor: pointer;
  transition: all var(--transition-base);
}

.dot.active {
  background: var(--primary);
  width: 30px;
  border-radius: var(--radius-full);
}

/* CTA Section */
.cta {
  padding: var(--space-24) 0;
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("https://www.transparenttextures.com/patterns/cubes.png");
  opacity: 0.1;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: var(--text-4xl);
  color: var(--white);
  margin-bottom: var(--space-4);
}

.cta-content p {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-8);
}

.cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--white);
}

.footer-top {
  padding: var(--space-20) 0 var(--space-12);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-10);
}

.footer-brand .logo {
  margin-bottom: var(--space-4);
  color: var(--white);
}

.footer-description {
  color: var(--gray-400);
  margin-bottom: var(--space-6);
  line-height: 1.8;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: all var(--transition-base);
}

.social-link:hover {
  background: var(--secondary);
  color: var(--gray-900);
  transform: translateY(-3px);
}

.footer-links h4,
.footer-contact h4 {
  font-size: var(--text-lg);
  color: var(--white);
  margin-bottom: var(--space-6);
}

.footer-links ul li {
  margin-bottom: var(--space-3);
}

.footer-links ul li a {
  color: var(--gray-400);
  transition: color var(--transition-base);
}

.footer-links ul li a:hover {
  color: var(--secondary);
  padding-left: var(--space-2);
}

.footer-contact ul li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  color: var(--gray-400);
}

.footer-contact ul li i {
  color: var(--secondary);
  margin-top: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-6) 0;
}

.footer-bottom-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom p {
  color: var(--gray-500);
  font-size: var(--text-sm);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom-links a {
  color: var(--gray-500);
  font-size: var(--text-sm);
  transition: color var(--transition-base);
}

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

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 999;
}

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

.back-to-top:hover {
  transform: translateY(-5px);
  background: var(--gradient-gold);
  color: var(--gray-900);
}

/* Animation Utilities */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

[data-aos="fade-right"] {
  transform: translateX(-50px);
}

[data-aos="fade-right"].aos-animate {
  transform: translateX(0);
}

[data-aos="fade-left"] {
  transform: translateX(50px);
}

[data-aos="fade-left"].aos-animate {
  transform: translateX(0);
}

[data-aos="zoom-in"] {
  transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
  transform: scale(1);
}

/* ========================================
   PAGE HEADER STYLES
   ======================================== */

.page-header {
  position: relative;
  padding: 10rem 0 5rem;
  background: var(--primary);
  overflow: hidden;
}

.page-header-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("/images/bg/bg.jpg") center/cover no-repeat;
}

.page-header-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-hero);
}

.page-header-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--text-sm);
}

.breadcrumb a {
  color: var(--secondary);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb i {
  font-size: 0.75rem;
}

.page-title {
  font-size: var(--text-5xl);
  color: var(--white);
  margin-bottom: 1rem;
}

.page-description {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   PRODUCT PAGE STYLES
   ======================================== */

.product-categories {
  padding: 3rem 0;
  background: var(--white);
}

.category-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.category-tab {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border: 2px solid var(--gray-200);
  background: var(--white);
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

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

.category-tab i {
  font-size: 1rem;
}

.products-section {
  padding: 3rem 0 5rem;
  background: var(--gray-50);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.product-image {
  position: relative;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
  transform: scale(1.1);
}

.product-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--secondary);
  color: var(--gray-900);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
}

.product-content {
  padding: 1.5rem;
}

.product-category {
  display: inline-block;
  color: var(--secondary);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.product-title {
  font-size: var(--text-xl);
  margin-bottom: 0.75rem;
}

.product-description {
  color: var(--gray-500);
  font-size: var(--text-sm);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.product-features {
  margin-bottom: 1.5rem;
}

.product-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-sm);
  color: var(--gray-600);
  margin-bottom: 0.5rem;
}

.product-features i {
  color: var(--secondary);
  font-size: 0.75rem;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-200);
}

.product-price {
  display: flex;
  flex-direction: column;
}

.price-label {
  font-size: var(--text-xs);
  color: var(--gray-400);
}

.price-value {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--primary);
}

/* Why Choose Us Section */
.why-choose-us {
  padding: 5rem 0;
  background: var(--white);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.why-text {
  color: var(--gray-600);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.why-features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.why-feature {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.why-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.why-icon i {
  color: var(--white);
  font-size: 1.25rem;
}

.why-feature-content h4 {
  font-size: var(--text-lg);
  margin-bottom: 0.5rem;
}

.why-feature-content p {
  color: var(--gray-500);
  font-size: var(--text-sm);
}

.why-image {
  position: relative;
}

.why-image img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.why-stats {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--gradient-gold);
  padding: 1.5rem 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.why-stat-number {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--gray-900);
  display: block;
}

.why-stat-label {
  font-size: var(--text-sm);
  color: var(--gray-800);
}

/* Products Preview Section - Category Cards */
.products-preview {
  padding: var(--space-24) 0;
  background: var(--gray-50);
}

.products-category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.product-category-card {
  background: var(--white);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.product-category-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.product-cat-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
}

.product-cat-icon i {
  font-size: var(--text-3xl);
  color: var(--white);
}

.product-category-card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.product-category-card p {
  color: var(--gray-500);
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
}

@media (max-width: 992px) {
  .products-category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* Fade In Animation */
.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   NAVBAR DROPDOWN
   ========================================== */
.nav-item-dropdown {
  position: relative;
}

.nav-link-dropdown {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.dropdown-menu {
  display: block;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: calc(100% + 0.25rem);
  left: 0;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
  min-width: 240px;
  padding: 0.5rem;
  list-style: none;
  margin: 0;
  z-index: 1000;
  border: 1px solid var(--gray-100);
  transition:
    opacity 0.18s ease,
    visibility 0.18s ease;
}

/* Invisible bridge: fills the gap between trigger and menu so cursor doesn't "fall off" */
.dropdown-menu::before {
  content: "";
  position: absolute;
  top: -0.75rem;
  left: 0;
  right: 0;
  height: 0.75rem;
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown:focus-within .dropdown-menu,
.nav-item-dropdown.dropdown-open .dropdown-menu {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  animation: fadeIn 0.18s ease;
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  color: var(--gray-700);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition:
    background 0.15s,
    color 0.15s;
  white-space: nowrap;
}

.dropdown-link:hover,
.dropdown-link.active {
  background: var(--gray-50);
  color: var(--primary);
}

@media (max-width: 992px) {
  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 0.25rem 0.5rem;
    margin: 0.25rem 0;
    min-width: auto;
    /* override desktop visibility approach — use display instead */
    display: none;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transition: none;
  }
  .dropdown-menu::before {
    display: none; /* no bridge needed on mobile */
  }
  .nav-item-dropdown:hover .dropdown-menu,
  .nav-item-dropdown:focus-within .dropdown-menu {
    display: none; /* disable hover on mobile */
  }
  .nav-item-dropdown.open .dropdown-menu {
    display: block;
  }
}

/* ============================================================
   BRAND SLIDER SECTION
   ============================================================ */
.brand-slider-section {
    padding: 60px 0 0;
    background: var(--bg-secondary, #f8fafc);
    overflow: hidden;
}

.brand-slider-section .section-header {
    text-align: center;
    margin-bottom: 2rem;
}

/* Wrapper hides overflow so track can scroll infinitely */
.brand-slider-wrapper {
    overflow: hidden;
    position: relative;
    padding: 1rem 0 2.5rem;
}

/* Fade edges */
.brand-slider-wrapper::before,
.brand-slider-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 120px;
    z-index: 2;
    pointer-events: none;
}
.brand-slider-wrapper::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-secondary, #f8fafc), transparent);
}
.brand-slider-wrapper::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-secondary, #f8fafc), transparent);
}

/* Infinite scroll track — items are doubled for seamless loop */
.brand-slider-track {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    width: max-content;
    animation: brandScroll 30s linear infinite;
}

.brand-slider-track:hover {
    animation-play-state: paused;
}

@keyframes brandScroll {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Individual brand item */
.brand-slide-item {
    flex-shrink: 0;
}

.brand-slide-item a,
.brand-slide-item > div {
    display: block;
    text-decoration: none;
}

/* The white card that shows the logo */
.brand-logo-card {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 160px;
    height: 88px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 14px 20px;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.brand-slide-item a:hover .brand-logo-card {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,.10);
    border-color: var(--primary-color, #2563eb);
}

.brand-logo-card img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(40%);
    opacity: 0.85;
    transition: filter .25s, opacity .25s;
}

.brand-slide-item a:hover .brand-logo-card img {
    filter: grayscale(0%);
    opacity: 1;
}

/* Fallback text when no logo image */
.brand-name-text {
    font-size: 0.85rem;
    font-weight: 700;
    color: #6b7280;
    text-align: center;
    line-height: 1.3;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    .brand-slider-section {
        background: #0f172a;
    }
    .brand-slider-wrapper::before { background: linear-gradient(to right, #0f172a, transparent); }
    .brand-slider-wrapper::after  { background: linear-gradient(to left, #0f172a, transparent); }
    .brand-logo-card { background: #1e293b; border-color: #334155; }
    .brand-logo-card img { filter: grayscale(30%) brightness(0.9); }
    .brand-slide-item a:hover .brand-logo-card { border-color: #60a5fa; }
    .brand-slide-item a:hover .brand-logo-card img { filter: none; opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .brand-logo-card {
        width: 120px;
        height: 70px;
        padding: 10px 14px;
    }
    .brand-slider-track { gap: 1rem; }
    .brand-slider-wrapper::before,
    .brand-slider-wrapper::after { width: 60px; }
    .brand-slider-section { padding: 40px 0 0; }
}