/* ============================================================
   BlueShell — Main Stylesheet
   Premium Corporate Design System
   ============================================================ */

/* ─── CSS Custom Properties ─── */
:root {
  --primary: #003366;
  --primary-dark: #002244;
  --primary-light: #004488;
  --marine: #0055a4;
  --accent: #00b4d8;
  --accent-light: #48cae4;
  --slate: #64748b;
  --slate-light: #94a3b8;
  --slate-dark: #334155;
  --white: #ffffff;
  --off-white: #f8fafc;
  --gray-50: #f1f5f9;
  --gray-100: #e2e8f0;
  --gray-200: #cbd5e1;

  --font-primary: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-base: 16px;
  --line-height: 1.7;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0, 51, 102, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 51, 102, 0.1);
  --shadow-lg: 0 10px 40px rgba(0, 51, 102, 0.12);
  --shadow-xl: 0 20px 60px rgba(0, 51, 102, 0.15);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease;

  --header-height: 80px;
  --container-max: 1200px;
  --section-padding: 100px;
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  line-height: var(--line-height);
  color: var(--slate-dark);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

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

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

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
  color: var(--primary);
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }

p {
  margin-bottom: 1rem;
}

/* ─── Layout ─── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

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

.section-title {
  margin-bottom: 16px;
}

.section-desc {
  color: var(--slate);
  font-size: 1.1rem;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--marine));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(0, 51, 102, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 51, 102, 0.4);
  color: var(--white);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
}

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

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

.btn-white:hover {
  transform: translateY(-2px);
  color: var(--marine);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* Ripple Effect */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: scale(0);
  animation: rippleAnim 0.6s ease-out;
  pointer-events: none;
}

@keyframes rippleAnim {
  to { transform: scale(4); opacity: 0; }
}

/* ─── Header ─── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--gray-100);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo-link {
  flex-shrink: 0;
}

.logo {
  height: 50px;
  width: auto;
  object-fit: contain;
}

.main-nav {
  display: flex;
}

.nav-list {
  display: flex;
  gap: 8px;
}

.nav-link {
  display: block;
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--slate-dark);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: rgba(0, 51, 102, 0.06);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1002;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 1001;
  visibility: hidden;
  pointer-events: none;
}

.mobile-drawer.open {
  visibility: visible;
  pointer-events: auto;
}

.drawer-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 20, 40, 0.5);
  opacity: 0;
  transition: opacity var(--transition);
}

.mobile-drawer.open .drawer-overlay {
  opacity: 1;
}

.drawer-nav {
  position: absolute;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100%;
  background: var(--white);
  padding: 80px 32px 32px;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-xl);
}

.mobile-drawer.open .drawer-nav {
  transform: translateX(0);
}

.drawer-close {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 2rem;
  color: var(--slate);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.drawer-close:hover {
  background: var(--gray-50);
}

.drawer-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.drawer-link {
  display: block;
  padding: 16px 20px;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--slate-dark);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.drawer-link:hover,
.drawer-link.active {
  background: rgba(0, 51, 102, 0.06);
  color: var(--primary);
}

/* ─── Hero Section ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(0, 34, 68, 0.92) 0%,
    rgba(0, 51, 102, 0.75) 50%,
    rgba(0, 85, 164, 0.6) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 750px;
  color: var(--white);
  padding: 60px 0;
}

.hero-label {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
  color: var(--white);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero-title span {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.2rem;
  line-height: 1.8;
  opacity: 0.9;
  margin-bottom: 40px;
  max-width: 600px;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: var(--white);
  opacity: 0.7;
  animation: bounce 2s infinite;
}

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

/* ─── Page Hero (inner pages) ─── */
.page-hero {
  padding: calc(var(--header-height) + 60px) 0 60px;
  background: linear-gradient(135deg, var(--primary-dark), var(--marine));
  color: var(--white);
  text-align: center;
}

.page-hero h1 {
  color: var(--white);
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 1.15rem;
  opacity: 0.85;
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
}

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

.breadcrumb span {
  opacity: 0.5;
}

/* ─── Cards ─── */
.glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
}

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

/* ─── Feature Cards ─── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
  text-align: center;
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 51, 102, 0.08), rgba(0, 180, 216, 0.08));
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  color: var(--marine);
}

.feature-card h3 {
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--slate);
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* ─── Services Grid ─── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.service-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 40px 32px;
  background: linear-gradient(135deg, var(--primary), var(--marine));
  color: var(--white);
  transition: all var(--transition);
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(0, 180, 216, 0.2) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card .service-icon {
  font-size: 2rem;
  margin-bottom: 20px;
  color: var(--accent-light);
}

.service-card h3 {
  color: var(--white);
  margin-bottom: 12px;
}

.service-card p {
  opacity: 0.85;
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* ─── Statistics ─── */
.stats-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: var(--white);
  padding: 80px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  text-align: center;
}

.stat-item {
  padding: 20px;
}

.stat-number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 1rem;
  opacity: 0.8;
  font-weight: 500;
}

/* ─── Testimonials ─── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
}

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

.testimonial-stars {
  color: #f59e0b;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.testimonial-text {
  font-size: 1rem;
  color: var(--slate-dark);
  font-style: italic;
  margin-bottom: 24px;
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
}

.author-info strong {
  display: block;
  color: var(--primary);
  font-size: 0.95rem;
}

.author-info span {
  font-size: 0.85rem;
  color: var(--slate);
}

/* ─── CTA Section ─── */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--marine) 50%, var(--accent) 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

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

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

.cta-section p {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 32px;
}

/* ─── Product Cards ─── */
.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);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
}

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

.product-card-link {
  display: block;
  color: inherit;
}

.product-card-link:hover {
  color: inherit;
}

.product-card-image {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--gray-50);
}

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

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

.product-category-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.product-card-title {
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.product-card-desc {
  color: var(--slate);
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

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

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

/* ─── Category Cards ─── */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 36px 24px;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  color: inherit;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
  color: inherit;
}

.category-card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 51, 102, 0.08), rgba(0, 180, 216, 0.12));
  border-radius: var(--radius-md);
  font-size: 1.4rem;
  color: var(--marine);
  margin-bottom: 16px;
}

.category-card-title {
  font-size: 1rem;
  margin-bottom: 6px;
}

.category-card-count {
  font-size: 0.85rem;
  color: var(--slate);
}

/* ─── Filter System ─── */
.products-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 250px;
  max-width: 400px;
}

.search-box i {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--slate-light);
}

.search-box input {
  width: 100%;
  padding: 14px 18px 14px 48px;
  border: 2px solid var(--gray-100);
  border-radius: var(--radius-full);
  background: var(--white);
  transition: all var(--transition-fast);
  outline: none;
}

.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 180, 216, 0.1);
}

.result-count {
  font-size: 0.9rem;
  color: var(--slate);
  font-weight: 500;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--slate-dark);
  background: var(--white);
  border: 2px solid var(--gray-100);
  border-radius: var(--radius-full);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.filter-btn:hover {
  border-color: var(--marine);
  color: var(--marine);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--marine));
  color: var(--white);
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(0, 51, 102, 0.25);
}

#products-grid {
  transition: opacity 0.2s ease;
}

#products-grid.filtering {
  opacity: 0;
}

/* ─── Product Detail ─── */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.product-detail-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--gray-50);
}

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

.product-detail-category {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 180, 216, 0.1);
  color: var(--marine);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.product-detail-title {
  margin-bottom: 20px;
}

.product-detail-desc {
  font-size: 1.05rem;
  color: var(--slate);
  line-height: 1.8;
  margin-bottom: 32px;
}

.specs-heading {
  font-size: 1.25rem;
  margin-bottom: 16px;
}

.specs-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.95rem;
}

.specs-list li i {
  color: var(--accent);
  font-size: 0.9rem;
}

.product-detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

/* ─── Empty & Error States ─── */
.empty-state,
.not-found-state {
  text-align: center;
  padding: 80px 20px;
  grid-column: 1 / -1;
}

.empty-icon {
  font-size: 3rem;
  color: var(--slate-light);
  margin-bottom: 20px;
}

.not-found-icon {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.error-message {
  text-align: center;
  color: var(--slate);
  padding: 40px;
}

/* ─── About Page ─── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

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

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

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.value-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--off-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
}

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

.value-icon {
  font-size: 2rem;
  color: var(--marine);
  margin-bottom: 16px;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--primary));
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 30px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--accent);
}

.timeline-year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.timeline-item h3 {
  margin-bottom: 8px;
}

.timeline-item p {
  color: var(--slate);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* Process Steps */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  counter-reset: process;
}

.process-step {
  text-align: center;
  padding: 32px 24px;
  position: relative;
}

.process-step::before {
  counter-increment: process;
  content: counter(process, decimal-leading-zero);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--marine));
  color: var(--white);
  border-radius: var(--radius-full);
  font-size: 1.1rem;
  font-weight: 700;
}

.process-step h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.process-step p {
  color: var(--slate);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Global Network */
.network-section {
  background: var(--off-white);
}

.network-visual {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

.network-badge {
  padding: 12px 24px;
  background: var(--white);
  border-radius: var(--radius-full);
  border: 1px solid var(--gray-100);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--slate-dark);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.network-badge:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.network-badge i {
  color: var(--marine);
  margin-right: 8px;
}

/* ─── Contact Page ─── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
}

.contact-info-card {
  padding: 32px;
  background: var(--off-white);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all var(--transition);
}

.contact-info-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-md);
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--marine));
  color: var(--white);
  border-radius: var(--radius-md);
  font-size: 1.1rem;
}

.contact-info-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.contact-info-card p,
.contact-info-card a {
  color: var(--slate);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-100);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--slate-dark);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--gray-100);
  border-radius: var(--radius-md);
  background: var(--off-white);
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(0, 180, 216, 0.1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group .error-text {
  color: #ef4444;
  font-size: 0.8rem;
  margin-top: 6px;
  display: none;
}

.form-group.invalid input,
.form-group.invalid textarea,
.form-group.invalid select {
  border-color: #ef4444;
}

.form-group.invalid .error-text {
  display: block;
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px;
}

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

.form-success i {
  font-size: 3rem;
  color: #22c55e;
  margin-bottom: 16px;
}

.form-success h3 {
  margin-bottom: 8px;
}

.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-top: 40px;
  aspect-ratio: 16/6;
  background: var(--gray-50);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ─── Footer ─── */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 60px;
}

.footer-logo {
  height: 45px;
  width: auto;
  margin-bottom: 20px;
  filter: brightness(0) invert(1);
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

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

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: var(--white);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--accent);
  color: var(--white);
  transform: translateY(-2px);
}

.footer-heading {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 24px;
  font-weight: 600;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.footer-contact li {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.9rem;
  align-items: flex-start;
}

.footer-contact i {
  color: var(--accent-light);
  margin-top: 4px;
  flex-shrink: 0;
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.7);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
}

/* ─── Scroll Animations ─── */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Image Fallback ─── */
.img-fallback {
  background: linear-gradient(135deg, var(--gray-50), var(--gray-100));
  object-fit: contain !important;
  min-height: 200px;
}

/* ─── Overview Section Backgrounds ─── */
.bg-off-white {
  background: var(--off-white);
}

.bg-gradient {
  background: linear-gradient(180deg, var(--off-white) 0%, var(--white) 100%);
}

/* ─── Utility Classes ─── */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}