/* ============================================
   RailinX Global - Corporate Website Stylesheet
   Professional · Tech · Green/Sustainable
   ============================================ */

/* ---------- CSS Variables (RailinX Brand) ---------- */
:root {
  --primary: #008B94;
  --primary-dark: #006D74;
  --primary-light: #00B4BF;
  --accent: #00C9D2;
  --accent-light: #E0F7F6;
  --accent-lighter: #F0FBFA;
  --navy: #0A2A33;
  --navy-light: #13404D;
  --navy-dark: #061D24;
  --navy: #0F2738;
  --navy-light: #1a3a52;
  --gray-900: #1a1a2e;
  --gray-700: #3d3d50;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-100: #f3f4f6;
  --white: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--gray-700);
  line-height: 1.7;
  background: var(--white);
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 100px 0;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--navy);
  font-weight: 700;
  line-height: 1.25;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--gray-500);
}

.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  margin-bottom: 20px;
}

.section-desc {
  max-width: 650px;
  margin: 0 auto 48px;
  text-align: center;
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  letter-spacing: 0.3px;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo img {
  height: 40px;
  width: auto;
}

.nav-logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}

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

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--gray-700);
  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 0.3s ease;
}

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

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

.nav-cta {
  padding: 10px 24px !important;
  background: var(--primary) !important;
  color: var(--white) !important;
  border-radius: 50px !important;
  font-weight: 600 !important;
}

.nav-cta::after { display: none; }

.nav-cta:hover {
  background: var(--primary-dark) !important;
  transform: translateY(-1px);
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 50%, #0E3E4D 100%);
  padding-top: 80px;
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image: 
    radial-gradient(circle at 20% 50%, var(--accent) 1px, transparent 1px),
    radial-gradient(circle at 80% 20%, var(--accent) 1px, transparent 1px),
    radial-gradient(circle at 60% 80%, var(--accent) 1px, transparent 1px);
  background-size: 60px 60px, 80px 80px, 100px 100px;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.12;
}

.hero-glow-1 {
  top: -200px;
  right: -100px;
  background: var(--primary-light);
}

.hero-glow-2 {
  bottom: -200px;
  left: -100px;
  background: var(--accent);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  color: var(--white);
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: rgba(255,255,255,0.7);
  font-size: 1.15rem;
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -1px;
}

.hero-stat-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

.hero-visual {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}

.hero-image-wrapper {
  position: relative;
  width: 520px;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.hero-image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0,139,148,0.3), rgba(0,201,210,0.2));
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: rgba(255,255,255,0.4);
  backdrop-filter: blur(10px);
}

.hero-floating-card {
  position: absolute;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-md);
  padding: 16px 22px;
  box-shadow: var(--shadow-lg);
  animation: float 6s ease-in-out infinite;
}

.hero-floating-card.card-1 {
  bottom: 30px;
  left: -40px;
  animation-delay: 0s;
}

.hero-floating-card.card-2 {
  top: 30px;
  right: -30px;
  animation-delay: -3s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.floating-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.floating-icon.green { background: var(--accent-light); color: var(--primary); }
.floating-icon.navy { background: #e8f0f6; color: var(--navy); }

.floating-label {
  font-size: 0.72rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.floating-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
}

/* ---------- Section Common ---------- */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

/* ---------- Features / Business Areas ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

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

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 24px;
  background: var(--accent-light);
  color: var(--primary);
}

.feature-card h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.feature-card p {
  font-size: 0.95rem;
  line-height: 1.7;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
}

.feature-link:hover {
  gap: 10px;
}

/* ---------- About Preview / Split Sections ---------- */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.split-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--accent-lighter), #D4F4F2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 0.9rem;
  border: 1px solid var(--gray-100);
}

.split-content h2 {
  margin-bottom: 20px;
}

.split-content p {
  margin-bottom: 16px;
}

.split-list {
  margin-top: 28px;
}

.split-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
  font-size: 1rem;
  color: var(--gray-700);
}

.split-list .check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  margin-top: 2px;
}

/* ---------- Stats Bar ---------- */
.stats-bar {
  background: var(--navy);
  padding: 64px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item .stat-num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -1.5px;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-item .stat-num span {
  color: var(--accent);
}

.stat-item .stat-text {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  font-weight: 500;
}

/* ---------- CTA Section ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 80px 0;
  text-align: center;
  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='0.04'%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: 2;
}

.cta-section h2 {
  color: var(--white);
  margin-bottom: 18px;
}

.cta-section p {
  color: rgba(255,255,255,0.75);
  max-width: 550px;
  margin: 0 auto 36px;
  font-size: 1.08rem;
}

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

/* ---------- Footer ---------- */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,0.65);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand img {
  height: 38px;
  margin-bottom: 18px;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.footer-brand p {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 300px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 0.95rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.89rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.89rem;
}

.footer-contact-item .icon {
  color: var(--accent);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}

.footer-socials {
  display: flex;
  gap: 14px;
}

.footer-socials a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer-socials a:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

/* ---------- Page Hero (Inner Pages) ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 30% 40%, rgba(0,191,165,0.06) 1px, transparent 1px);
  background-size: 40px 40px;
}

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

.page-hero p {
  color: rgba(255,255,255,0.6);
  max-width: 550px;
  margin: 0 auto;
  font-size: 1.08rem;
  position: relative;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.85rem;
  position: relative;
}

.breadcrumb a {
  color: rgba(255,255,255,0.45);
}

.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .current { color: rgba(255,255,255,0.7); }

/* ---------- About Page ---------- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--accent-lighter), #C5EFEA);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 0.9rem;
  overflow: hidden;
}

.value-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.value-card {
  background: var(--gray-100);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}

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

.value-card .value-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.value-card h4 {
  margin-bottom: 10px;
}

.value-card p {
  font-size: 0.9rem;
}

.timeline {
  position: relative;
  max-width: 750px;
  margin: 0 auto;
  padding-left: 36px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-300);
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
  padding-left: 28px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -26px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--accent-light);
}

.timeline-item h4 {
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 0.93rem;
}

/* ---------- Solutions Page ---------- */
.solutions-nav {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.solution-tab {
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--gray-300);
  background: var(--white);
  color: var(--gray-700);
  transition: var(--transition);
}

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

.solution-detail {
  display: none;
}

.solution-detail.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.solution-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.solution-detail.reverse .solution-detail-grid {
  direction: rtl;
}

.solution-detail.reverse .solution-detail-grid > * {
  direction: ltr;
}

.solution-image {
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--accent-lighter), #D4F4F2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 0.9rem;
  border: 1px solid var(--gray-100);
}

.solution-features {
  margin-top: 28px;
}

.solution-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.96rem;
  color: var(--gray-700);
}

.solution-features .dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 8px;
}

/* ---------- Sustainability Page ---------- */
.sustainability-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.sust-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  padding: 44px 32px;
  text-align: center;
  transition: var(--transition);
}

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

.sust-card .sust-icon {
  width: 76px;
  height: 76px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--accent-lighter), #C5F0EC);
}

.sust-card h3 {
  margin-bottom: 14px;
}

.sust-card p {
  font-size: 0.94rem;
}

/* ---------- Contact Page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
}

.contact-info-group {
  margin-bottom: 36px;
}

.contact-info-group h3 {
  margin-bottom: 18px;
  font-size: 1.1rem;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}

.contact-info-item .ci-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--primary);
  flex-shrink: 0;
}

.contact-info-item .ci-text strong {
  display: block;
  font-size: 0.92rem;
  color: var(--navy);
  margin-bottom: 2px;
}

.contact-info-item .ci-text {
  font-size: 0.9rem;
  color: var(--gray-500);
}

.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 22px;
}

.form-group label {
  display: block;
  font-size: 0.87rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 18px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.93rem;
  font-family: inherit;
  color: var(--gray-700);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11,110,79,0.08);
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-content { max-width: 100%; }
  .hero-image-wrapper { width: 420px; height: 320px; }
  .split-section { grid-template-columns: 1fr; gap: 48px; }
  .about-intro { grid-template-columns: 1fr; gap: 48px; }
  .solution-detail-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
  .value-cards { grid-template-columns: repeat(2, 1fr); }
  .sustainability-cards { grid-template-columns: 1fr; max-width: 450px; margin: 0 auto; }
}

@media (max-width: 768px) {
  .section-padding { padding: 64px 0; }
  
  .nav-links {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 0;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--gray-100);
  }
  
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 14px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 1rem;
  }
  .nav-links a::after { display: none; }
  .nav-cta {
    text-align: center;
    margin-top: 12px;
    display: inline-block;
  }
  
  .nav-toggle { display: flex; }
  
  .hero { min-height: auto; padding: 120px 0 80px; }
  .hero-visual { display: none; }
  .hero-stats { gap: 28px; flex-wrap: wrap; }
  .hero-stat-number { font-size: 1.6rem; }
  
  .features-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .value-cards { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 28px; }
  .contact-form { padding: 28px; }
  .solutions-nav { gap: 8px; }
  .solution-tab { padding: 8px 16px; font-size: 0.82rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .btn { padding: 12px 24px; font-size: 0.88rem; }
  .hero-stats { gap: 20px; }
  .feature-card { padding: 28px 22px; }
}

/* ---------- Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---------- Utility ---------- */
.bg-light { background: var(--gray-100); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }