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

:root {
  --primary: #f0c040;
  --primary-dark: #d4a830;
  --primary-light: #fce38a;
  --bg: #0f0f1a;
  --bg2: #1a1a2e;
  --text: #e0e0e0;
  --text-light: #b0b0b0;
  --card-bg: rgba(255, 255, 255, 0.05);
  --glass: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.1);
  --radius: 16px;
  --radius-sm: 12px;
  --radius-full: 30px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
  --transition: 0.3s ease;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --nav-height: 64px;
  --max-width: 1200px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Gradient Background */
.gradient-bg {
  background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #0f0f1a 100%);
}

/* Glass Effect */
.glass {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}

/* Card */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

/* Button */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #1a1a2e;
  font-weight: bold;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1.2;
}

.btn:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 20px rgba(240, 192, 64, 0.4);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: #1a1a2e;
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  height: var(--nav-height);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
}

.logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 1px;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color var(--transition);
  position: relative;
  padding: 4px 0;
}

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

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  width: 100%;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--primary);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 5px;
}

.menu-toggle span {
  width: 28px;
  height: 3px;
  background: var(--text);
  border-radius: 3px;
  transition: var(--transition);
}

.dark-toggle {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
  white-space: nowrap;
}

.dark-toggle:hover,
.dark-toggle:focus-visible {
  border-color: var(--primary);
  color: var(--primary);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 40px) 20px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(240, 192, 64, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.8;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Carousel */
.carousel {
  position: relative;
  width: 100%;
  max-width: 1000px;
  margin: 40px auto 0;
  overflow: hidden;
  border-radius: var(--radius);
}

.carousel-track {
  display: flex;
  transition: transform 0.7s ease;
}

.carousel-slide {
  min-width: 100%;
  padding: 60px 40px;
  text-align: center;
  background: var(--glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius);
}

.carousel-slide h3 {
  font-size: 1.8rem;
  margin-bottom: 12px;
  color: var(--primary);
}

.carousel-slide p {
  opacity: 0.8;
  max-width: 600px;
  margin: 0 auto;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

.carousel-dots button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: var(--transition);
  padding: 0;
}

.carousel-dots button.active {
  background: var(--primary);
  transform: scale(1.2);
}

.carousel-dots button:hover,
.carousel-dots button:focus-visible {
  background: var(--primary-light);
}

/* Sections */
section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-title p {
  opacity: 0.7;
  max-width: 600px;
  margin: 0 auto;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item .number {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-item .label {
  opacity: 0.7;
  margin-top: 6px;
}

/* FAQ */
.faq-item {
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--card-bg);
}

.faq-question {
  padding: 18px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  transition: background var(--transition);
  user-select: none;
}

.faq-question:hover,
.faq-question:focus-visible {
  background: rgba(255, 255, 255, 0.05);
}

.faq-question .icon {
  transition: transform var(--transition);
  font-size: 0.8rem;
}

.faq-item.open .faq-question .icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 24px;
  opacity: 0.8;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 18px;
}

/* Footer */
footer {
  background: var(--bg2);
  padding: 60px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-bottom: 40px;
}

.footer-col h4 {
  margin-bottom: 16px;
  color: var(--primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 8px;
  opacity: 0.7;
}

.footer-col ul li a {
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-col ul li a:hover,
.footer-col ul li a:focus-visible {
  color: var(--primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  opacity: 0.6;
  font-size: 0.9rem;
}

/* Back to Top */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #1a1a2e;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.back-top:hover,
.back-top:focus-visible {
  transform: scale(1.1);
}

/* Search Box */
.search-box {
  display: flex;
  gap: 8px;
  max-width: 400px;
  margin: 20px auto;
}

.search-box input {
  flex: 1;
  padding: 12px 18px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  outline: none;
  font-size: 1rem;
  transition: border-color var(--transition);
}

.search-box input:focus {
  border-color: var(--primary);
}

.search-box input::placeholder {
  color: var(--text-light);
}

.search-box button {
  padding: 12px 24px;
  border-radius: var(--radius-full);
  border: none;
  background: var(--primary);
  color: #1a1a2e;
  font-weight: bold;
  cursor: pointer;
  transition: opacity var(--transition);
  font-size: 1rem;
}

.search-box button:hover,
.search-box button:focus-visible {
  opacity: 0.9;
}

/* Team & Partner Images */
.team-img,
.partner-img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 2rem;
  color: #1a1a2e;
  font-weight: bold;
}

.partner-item {
  text-align: center;
  padding: 20px;
}

/* Product Card */
.product-card {
  text-align: center;
}

.product-card .icon {
  font-size: 3rem;
  margin-bottom: 12px;
  display: block;
}

/* News Card */
.news-card h4 {
  margin-bottom: 8px;
}

.news-card .date {
  opacity: 0.5;
  font-size: 0.85rem;
}

/* Breadcrumb */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.9rem;
  opacity: 0.6;
}

.breadcrumb span {
  color: var(--primary);
}

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

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--primary);
}

/* Address */
address {
  font-style: normal;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, rgba(240, 192, 64, 0.1), rgba(26, 26, 46, 0.8));
  border-radius: var(--radius);
  padding: 60px 40px;
  text-align: center;
}

.cta-section h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

/* Text Center Utility */
.text-center {
  text-align: center;
}

/* Fade In Animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Light Mode */
body.light-mode {
  --bg: #f5f5f5;
  --bg2: #ffffff;
  --text: #1a1a2e;
  --text-light: #666;
  --card-bg: rgba(0, 0, 0, 0.03);
  --glass: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.1);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.15);
}

body.light-mode .glass {
  background: var(--glass);
}

body.light-mode nav {
  background: rgba(255, 255, 255, 0.85);
  border-bottom-color: rgba(0, 0, 0, 0.05);
}

body.light-mode .carousel-slide {
  background: rgba(255, 255, 255, 0.6);
}

body.light-mode .search-box input {
  border-color: rgba(0, 0, 0, 0.1);
  background: rgba(0, 0, 0, 0.03);
  color: var(--text);
}

body.light-mode .dark-toggle {
  border-color: rgba(0, 0, 0, 0.2);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: rgba(15, 15, 26, 0.95);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  body.light-mode .nav-links {
    background: rgba(255, 255, 255, 0.95);
  }

  .nav-links.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .stats-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .carousel-slide {
    padding: 40px 20px;
  }

  .carousel-slide h3 {
    font-size: 1.4rem;
  }

  section {
    padding: 60px 0;
  }

  .section-title h2 {
    font-size: 1.8rem;
  }

  .stat-item .number {
    font-size: 2.2rem;
  }

  .cta-section {
    padding: 40px 20px;
  }

  .cta-section h2 {
    font-size: 1.6rem;
  }

  .back-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

/* Accessibility & Focus */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

/* Image Placeholder */
img {
  max-width: 100%;
  height: auto;
}

/* List Reset */
ul,
ol {
  list-style: none;
}

/* Link Reset */
a {
  color: inherit;
  text-decoration: none;
}

/* Button Reset */
button {
  font-family: inherit;
}

/* Hidden Utility (for EEAT) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}