/* ===== CSS Variables ===== */
:root {
  --primary: #e85d04;
  --primary-dark: #c44d03;
  --primary-light: #ff7b29;
  --secondary: #1a1a2e;
  --accent: #0f3460;
  --dark: #0d1117;
  --text: #2d3748;
  --text-light: #718096;
  --white: #ffffff;
  --gray-50: #f7fafc;
  --gray-100: #edf2f7;
  --gray-200: #e2e8f0;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

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

ul { list-style: none; }

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

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

.section {
  padding: 100px 0;
}

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

.section-tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ===== Preloader ===== */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  transition: opacity 0.5s, visibility 0.5s;
}

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

.preloader-logo {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--white);
  animation: pulse 1.5s infinite;
}

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

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 2px 30px rgba(0, 0, 0, 0.08);
  padding: 10px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--white);
  z-index: 1001;
}

.navbar.scrolled .logo { color: var(--secondary); }

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.2rem;
  color: var(--white);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  position: relative;
}

.navbar.scrolled .nav-links a { color: var(--text); }

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: rgba(232, 93, 4, 0.08);
}

.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
  color: var(--white) !important;
  padding: 10px 24px !important;
  border-radius: 50px !important;
  font-weight: 600 !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(232, 93, 4, 0.4);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary)) !important;
  color: var(--white) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  padding: 4px;
}

.hamburger span {
  width: 28px;
  height: 3px;
  background: var(--white);
  border-radius: 3px;
  transition: var(--transition);
}

.navbar.scrolled .hamburger span { background: var(--secondary); }

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.hamburger.active span:nth-child(2) { opacity: 0; }

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ===== Hero Banner Slider (Images Only) ===== */
.hero-slider {
  position: relative;
  height: 85vh;
  min-height: 500px;
  max-height: 800px;
  overflow: hidden;
  background: var(--dark);
}

.slider-track {
  position: absolute;
  inset: 0;
}

.banner-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  visibility: hidden;
  transform: scale(1.08);
  transition: opacity 1s ease, visibility 1s ease, transform 6s ease;
}

.banner-slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
  z-index: 1;
}

.banner-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(to bottom, rgba(13, 17, 23, 0.45) 0%, rgba(13, 17, 23, 0.25) 50%, rgba(13, 17, 23, 0.65) 100%),
    linear-gradient(to right, rgba(13, 17, 23, 0.3) 0%, transparent 50%);
  pointer-events: none;
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(0, 0, 0, 0.35);
  color: var(--white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
  z-index: 10;
  backdrop-filter: blur(8px);
}

.slider-arrow:hover {
  background: var(--primary);
  border-color: var(--primary);
  transform: translateY(-50%) scale(1.08);
}

.slider-prev { left: 24px; }
.slider-next { right: 24px; }

.slider-controls {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 400px;
  padding: 0 24px;
}

.slider-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  padding: 0;
}

.slider-dot.active {
  width: 32px;
  border-radius: 10px;
  background: var(--primary);
  border-color: var(--primary);
}

.slider-dot:hover:not(.active) {
  background: rgba(255, 255, 255, 0.4);
}

.slider-progress-wrap {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
  overflow: hidden;
}

.slider-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 3px;
  transition: width 0.05s linear;
}

/* ===== Welcome / Content Section ===== */
.welcome-section {
  position: relative;
  padding: 0 0 100px;
  margin-top: -80px;
  z-index: 5;
  overflow: hidden;
}

.welcome-bg-shapes .shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  pointer-events: none;
}

.welcome-bg-shapes .shape-1 {
  width: 400px;
  height: 400px;
  background: rgba(232, 93, 4, 0.15);
  top: -100px;
  right: -100px;
}

.welcome-bg-shapes .shape-2 {
  width: 300px;
  height: 300px;
  background: rgba(15, 52, 96, 0.12);
  bottom: 0;
  left: -80px;
}

.welcome-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.12);
  padding: 56px;
  border: 1px solid var(--gray-100);
  position: relative;
}

.welcome-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.welcome-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
}

.welcome-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(232, 93, 4, 0.1);
  border: 1px solid rgba(232, 93, 4, 0.25);
  color: var(--primary);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.welcome-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: blink 2s infinite;
}

.welcome-title {
  font-size: clamp(2rem, 4vw, 2.85rem);
  font-weight: 900;
  color: var(--secondary);
  line-height: 1.15;
  margin-bottom: 20px;
}

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

.welcome-desc {
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.85;
  margin-bottom: 28px;
}

.welcome-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.welcome-tags span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--secondary);
  transition: var(--transition);
}

.welcome-tags span i {
  color: var(--primary);
  font-size: 0.75rem;
}

.welcome-tags span:hover {
  border-color: var(--primary);
  background: rgba(232, 93, 4, 0.06);
}

.welcome-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-outline-dark {
  background: transparent;
  color: var(--secondary);
  border: 2px solid var(--gray-200);
}

.btn-outline-dark:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(232, 93, 4, 0.05);
  transform: translateY(-3px);
}

.welcome-stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.welcome-stat {
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
}

.welcome-stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(232, 93, 4, 0.25);
}

.welcome-stat .stat-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1rem;
}

.welcome-stat h3 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 4px;
}

.welcome-stat p {
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 500;
}

.welcome-highlights {
  background: var(--secondary);
  border-radius: var(--radius);
  padding: 24px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.highlight-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.highlight-item i {
  color: var(--primary-light);
  font-size: 1rem;
  flex-shrink: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(232, 93, 4, 0.15);
  border: 1px solid rgba(232, 93, 4, 0.3);
  color: var(--primary-light);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  animation: fadeInUp 1s ease 0.2s both;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
  animation: fadeInUp 1s ease 0.4s both;
}

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

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 520px;
  animation: fadeInUp 1s ease 0.6s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.8s both;
}

.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);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: 0 8px 30px rgba(232, 93, 4, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(232, 93, 4, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(232, 93, 4, 0.1);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  animation: fadeInUp 1s ease 1s both;
}

.stat-item h3 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-light);
}

.stat-item p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 4px;
}

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===== About Section ===== */
.about { background: var(--gray-50); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-img-main {
  width: 100%;
  height: 450px;
  background: linear-gradient(135deg, rgba(8, 19, 32, 0.30), rgba(18, 47, 76, 0.40));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  box-shadow: 0 15px 40px rgba(15, 23, 42, 0.12);
}

.about-img-main::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.04), rgba(255,255,255,0.00));
}

.about-img-main .about-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 18px,
    rgba(255,255,255,0.08) 18px,
    rgba(255,255,255,0.08) 20px
  );
}

.about-img-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--white);
  padding: 40px;
}

.about-img-content h3 {
  font-size: clamp(3.5rem, 5vw, 6rem);
  font-weight: 900;
  line-height: 0.9;
  color: var(--primary);
  letter-spacing: -0.06em;
  margin-bottom: 18px;
}

.about-img-content p {
  font-size: clamp(1.4rem, 2vw, 2.2rem);
  opacity: 0.95;
  margin-top: 8px;
  line-height: 1.2;
  color: rgba(255,255,255,0.9);
  font-weight: 500;
}

.about-experience {
  position: absolute;
  bottom: -30px;
  right: -20px;
  background: var(--primary);
  color: var(--white);
  padding: 24px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.about-experience h4 {
  font-size: 2.5rem;
  font-weight: 900;
}

.about-experience p {
  font-size: 0.85rem;
  opacity: 0.9;
}

.about-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
}

.about-content p {
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  transition: var(--transition);
}

.about-feature:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow);
}

.about-feature .check {
  width: 36px;
  height: 36px;
  background: rgba(232, 93, 4, 0.1);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.about-feature span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--secondary);
}

/* ===== Products Section ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-card {
  background: var(--white);
  border-radius: 26px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: var(--transition);
  border: 2px solid rgba(232, 93, 4, 0.8);
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(232, 93, 4, 1);
}

.product-card-header {
  padding: 0;
  position: relative;
  overflow: hidden;
  border-bottom: 0;
  display: flex;
  flex-direction: column;
}

.product-card-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  z-index: 2;
}

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

.product-icon {
  width: 100%;
  height: 260px;
  background-color: #dfeaf3;
  background: linear-gradient(135deg, rgba(232, 93, 4, 0.1), rgba(232, 93, 4, 0.05));
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 0;
  transition: var(--transition);
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid rgba(232, 93, 4, 0.2);
  flex-shrink: 0;
}

.product-card:hover .product-icon {
  transform: scale(1.02);
}

.product-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--secondary);
  margin: 18px 0 10px;
  padding: 0 26px;
}

.product-card .product-desc {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
  padding: 0 26px;
  margin: 0;
}

.product-card-body {
  padding: 14px 26px 26px;
}

.product-list li {
  padding: 8px 0;
  font-size: 0.85rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--gray-100);
}

.product-list li:last-child { border-bottom: none; }

.product-list li::before {
  content: '→';
  color: var(--primary);
  font-weight: 700;
}

/* ===== Construction Equipment Section ===== */
.construction {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--accent) 100%);
  color: var(--white);
}

.construction .section-title { color: var(--white); }
.construction .section-desc { color: rgba(255,255,255,0.7); }

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.equipment-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  cursor: default;
}

.equipment-card:hover {
  background: rgba(232, 93, 4, 0.15);
  border-color: rgba(232, 93, 4, 0.3);
  transform: translateY(-8px);
}

.equipment-card .eq-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
}

.equipment-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.equipment-card p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

/* ===== Partners ===== */
.partners { background: var(--gray-50); }

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

.partner-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px 24px;
  text-align: center;
  box-shadow: 0 2px 15px rgba(0,0,0,0.04);
  transition: var(--transition);
  border: 1px solid var(--gray-100);
}

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

.partner-card .partner-logo {
  font-size: 2rem;
  margin-bottom: 12px;
}

.partner-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--secondary);
}

.partner-card p {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* ===== Why Choose Us ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
}

.why-card {
  padding: 32px 28px 30px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(247,250,252,0.9));
  border: 1px solid rgba(148, 163, 184, 0.18);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  position: relative;
  overflow: hidden;
  min-height: 100%;
}

.why-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(232, 93, 4, 0.02), transparent 60%);
  pointer-events: none;
}

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

.why-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  border-color: rgba(232, 93, 4, 0.2);
}

.why-card:hover::after { transform: scaleX(1); }

.why-number {
  font-size: clamp(2.8rem, 3vw, 4rem);
  font-weight: 900;
  color: rgba(232, 93, 4, 0.12);
  line-height: 1;
  margin-bottom: 18px;
  letter-spacing: -0.06em;
}

.why-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 14px;
  line-height: 1.3;
}

.why-card p {
  font-size: 0.96rem;
  color: var(--text-light);
  line-height: 1.75;
}

/* ===== Contact Section ===== */
.contact { background: var(--gray-50); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  transition: var(--transition);
}

.contact-info-card:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow);
}

.contact-info-card .ci-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-info-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 4px;
}

.contact-info-card p,
.contact-info-card a {
  font-size: 0.9rem;
  color: var(--text-light);
}

.contact-info-card a:hover { color: var(--primary); }

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

.contact-form h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--gray-200);
  border-radius: 10px;
  font-family: var(--font);
  font-size: 0.9rem;
  transition: var(--transition);
  background: var(--gray-50);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(232, 93, 4, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(232, 93, 4, 0.4);
}

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

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

.footer-col ul li a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--primary-light);
  padding-left: 5px;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

.footer-bottom span { color: var(--primary-light); }

/* ===== Floating Social & WhatsApp ===== */
.float-social {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.float-social a {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.1rem;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  transition: var(--transition);
  opacity: 0;
  transform: translateX(60px);
}

.float-social.visible a {
  opacity: 1;
  transform: translateX(0);
}

.float-social a:nth-child(1) { background: #1877f2; transition-delay: 0.1s; }
.float-social a:nth-child(2) { background: #1da1f2; transition-delay: 0.15s; }
.float-social a:nth-child(3) { background: #0077b5; transition-delay: 0.2s; }
.float-social a:nth-child(4) { background: #e4405f; transition-delay: 0.25s; }

.float-social a:hover {
  transform: scale(1.15) !important;
  box-shadow: 0 6px 25px rgba(0,0,0,0.3);
}

.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 0;
}

.whatsapp-btn {
  width: 60px;
  height: 60px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.8rem;
  box-shadow: 0 6px 25px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  animation: whatsappPulse 2s infinite;
  position: relative;
}

.whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 35px rgba(37, 211, 102, 0.6);
}

.whatsapp-btn svg {
  width: 32px;
  height: 32px;
  fill: white;
}

.whatsapp-tooltip {
  background: var(--white);
  color: var(--secondary);
  padding: 10px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  margin-right: 12px;
  opacity: 0;
  transform: translateX(10px);
  transition: var(--transition);
  white-space: nowrap;
  pointer-events: none;
}

.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
  transform: translateX(0);
}

@keyframes whatsappPulse {
  0%, 100% { box-shadow: 0 6px 25px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 6px 35px rgba(37, 211, 102, 0.7), 0 0 0 12px rgba(37, 211, 102, 0.1); }
}

/* ===== Scroll Animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-scale.active {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 100px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--secondary);
  color: var(--white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 998;
  box-shadow: var(--shadow);
}

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

.back-to-top:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .welcome-grid { grid-template-columns: 1fr; }
  .welcome-card { padding: 40px 32px; }
  .hero-slider { height: 70vh; }
  .about-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .equipment-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 70px 0; }

  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    padding: 80px 24px 24px;
    box-shadow: -5px 0 30px rgba(0,0,0,0.1);
    transition: right 0.4s ease;
    align-items: flex-start;
    gap: 4px;
  }

  .nav-links.open { right: 0; }

  .nav-links a {
    color: var(--text) !important;
    width: 100%;
    padding: 12px 16px;
  }

  .nav-cta { text-align: center; margin-top: 12px; }

  .products-grid { grid-template-columns: 1fr; }
  .equipment-grid { grid-template-columns: 1fr 1fr; }
  .partners-grid { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .about-features { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .welcome-section { margin-top: -50px; }
  .welcome-stats-row { grid-template-columns: 1fr 1fr; }
  .slider-prev { left: 12px; }
  .slider-next { right: 12px; }
  .float-social { display: none; }
}

@media (max-width: 480px) {
  .equipment-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: 1fr; }
  .welcome-buttons { flex-direction: column; }
  .welcome-buttons .btn { width: 100%; justify-content: center; }
  .welcome-stats-row { grid-template-columns: 1fr; }
  .welcome-card { padding: 28px 20px; }
  .slider-arrow { width: 42px; height: 42px; }
  .hero-slider { height: 55vh; min-height: 360px; }
}