/* =========================================
   SOLURA CHEMICALS — Design System & Global Styles
   Premium Monochromatic Theme: Black + Gold
   ========================================= */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
  /* Primary Colors — Monochromatic */
  --primary: #0D0D0D;
  --primary-light: #1A1A1A;
  --primary-dark: #000000;
  --primary-mid: #2D2D2D;

  /* Accent — Warm Gold */
  --accent: #C4A265;
  --accent-light: #D4B878;
  --accent-dark: #A8874E;
  --accent-subtle: rgba(196, 162, 101, 0.12);

  /* Teal — Muted for checkmarks/success */
  --teal: #2D9C8F;
  --teal-light: #3CB5A6;

  /* Backgrounds */
  --bg-white: #FFFFFF;
  --bg-light: #F8F8F6;
  --bg-section: #F2F1EE;
  --bg-dark: #0A0A0A;
  --bg-card: #FFFFFF;

  /* Text */
  --text-dark: #0D0D0D;
  --text-body: #4A4A4A;
  --text-light: #7A7A7A;
  --text-white: #FFFFFF;
  --text-muted: #999999;

  /* Borders */
  --border: #E8E8E6;
  --border-light: #F0F0EE;
  --border-dark: rgba(255,255,255,0.1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --shadow-xl: 0 24px 64px rgba(0,0,0,0.14);
  --shadow-gold: 0 4px 24px rgba(196,162,101,0.2);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.12);

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --section-padding: 100px 0;
  --container-width: 1200px;
  --container-padding: 0 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-body);
  background-color: var(--bg-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-dark);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.9rem, 4vw, 3rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.6rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
}

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

.container-narrow {
  max-width: 900px;
}

/* ---- Section ---- */
.section {
  padding: var(--section-padding);
}

.section-light {
  background-color: var(--bg-light);
}

.section-dark {
  background-color: var(--primary);
  color: var(--text-white);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--text-white);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.section-header p {
  color: var(--text-light);
  font-size: 1.1rem;
  max-width: 580px;
  margin: 24px auto 0;
  line-height: 1.7;
}

.section-dark .section-header p {
  color: rgba(255,255,255,0.6);
}

/* =========================================
   TOP BAR
   ========================================= */
.top-bar {
  background-color: var(--primary);
  color: rgba(255,255,255,0.75);
  padding: 10px 0;
  font-size: 0.84rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

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

.top-bar-left {
  display: flex;
  gap: 28px;
  align-items: center;
}

.top-bar-left a {
  display: flex;
  align-items: center;
  gap: 7px;
  color: rgba(255,255,255,0.75);
  transition: color var(--transition-fast);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.top-bar-left a:hover {
  color: var(--accent);
}

.top-bar-left svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.top-bar-right {
  display: flex;
  gap: 10px;
  align-items: center;
}

.top-bar-right a {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  transition: all var(--transition-fast);
}

.top-bar-right a:hover {
  background: var(--accent);
  color: var(--primary);
}

.top-bar-right svg {
  width: 14px;
  height: 14px;
}

/* =========================================
   HEADER / NAVIGATION
   ========================================= */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
  border-bottom: 1px solid var(--border);
}

.header.scrolled {
  box-shadow: 0 1px 20px rgba(0,0,0,0.06);
  border-bottom-color: transparent;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 90px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.header .logo img {
  height: 70px;
  width: auto;
}

.footer-brand .logo img {
  height: 60px;
  width: auto;
  filter: invert(1) brightness(2);
}

.logo-icon {
  width: 45px;
  height: 45px;
  background: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 1.1rem;
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.1) 50%, transparent 60%);
  transition: transform 0.6s;
}

.logo:hover .logo-icon::after {
  transform: translateX(100%) translateY(100%);
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-menu a {
  padding: 10px 18px;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--text-body);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  letter-spacing: 0.01em;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
  background: rgba(13, 13, 13, 0.04);
}

.nav-menu a.btn-primary {
  color: var(--text-white);
  background: var(--primary);
}

.nav-menu a.btn-primary:hover {
  color: var(--text-white);
  background: var(--primary-mid);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.nav-cta {
  margin-left: 16px;
}

.nav-cta .btn {
  padding: 10px 24px;
  font-size: 0.88rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1001;
}

.menu-toggle span {
  width: 26px;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

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

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

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

/* Mobile Overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* =========================================
   BUTTONS
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn-primary {
  background: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-mid);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent);
  color: var(--primary);
  border-color: var(--accent);
  font-weight: 700;
}

.btn-accent:hover {
  background: var(--accent-dark);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}

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

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

.btn-outline-white {
  background: transparent;
  color: var(--text-white);
  border-color: rgba(255,255,255,0.35);
}

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

.btn-lg {
  padding: 16px 40px;
  font-size: 1rem;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, #000000 0%, #0D0D0D 40%, #1A1A1A 70%, #2D2D2D 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(196,162,101,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(196,162,101,0.04) 0%, transparent 50%);
}

/* Animated molecules background */
.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(196, 162, 101, 0.25);
  border-radius: 50%;
  animation: float-particle linear infinite;
}

.hero-particle:nth-child(1) { left: 10%; top: 20%; animation-duration: 8s; animation-delay: 0s; width: 6px; height: 6px; }
.hero-particle:nth-child(2) { left: 20%; top: 60%; animation-duration: 12s; animation-delay: 1s; }
.hero-particle:nth-child(3) { left: 35%; top: 30%; animation-duration: 10s; animation-delay: 2s; width: 8px; height: 8px; }
.hero-particle:nth-child(4) { left: 50%; top: 70%; animation-duration: 9s; animation-delay: 0.5s; }
.hero-particle:nth-child(5) { left: 65%; top: 15%; animation-duration: 11s; animation-delay: 3s; width: 5px; height: 5px; }
.hero-particle:nth-child(6) { left: 75%; top: 50%; animation-duration: 13s; animation-delay: 1.5s; }
.hero-particle:nth-child(7) { left: 85%; top: 35%; animation-duration: 7s; animation-delay: 2.5s; width: 3px; height: 3px; }
.hero-particle:nth-child(8) { left: 90%; top: 80%; animation-duration: 14s; animation-delay: 0.8s; }

@keyframes float-particle {
  0%, 100% { transform: translateY(0) translateX(0) scale(1); opacity: 0.2; }
  25% { transform: translateY(-30px) translateX(15px) scale(1.3); opacity: 0.5; }
  50% { transform: translateY(-15px) translateX(-10px) scale(0.7); opacity: 0.3; }
  75% { transform: translateY(-40px) translateX(20px) scale(1.1); opacity: 0.4; }
}

/* Hexagonal grid decoration */
/* Molecular structure decoration */
.hero-molecule-bg,
.page-banner::after {
  content: '';
  position: absolute;
  right: -5%;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 500px;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 150 150' fill='none' stroke='%23ffffff' stroke-width='4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cg transform='translate(20, 20) scale(0.4)'%3E%3Cpolygon points='50,10 84.6,30 84.6,70 50,90 15.4,70 15.4,30'/%3E%3Cline x1='30' y1='38' x2='30' y2='62'/%3E%3Cline x1='50' y1='75' x2='70' y2='62'/%3E%3C/g%3E%3Cg transform='translate(100, 100) scale(0.3) rotate(45)'%3E%3Cpolygon points='50,10 84.6,30 84.6,70 50,90 15.4,70 15.4,30'/%3E%3Cline x1='84.6' y1='70' x2='100' y2='85'/%3E%3Ccircle cx='105' cy='90' r='5' fill='%23ffffff'/%3E%3C/g%3E%3Cg transform='translate(110, 30) scale(0.35) rotate(-30)'%3E%3Cline x1='10' y1='50' x2='30' y2='30'/%3E%3Cline x1='30' y1='30' x2='60' y2='40'/%3E%3Cline x1='60' y1='40' x2='80' y2='20'/%3E%3Ccircle cx='80' cy='20' r='6' fill='%23ffffff'/%3E%3C/g%3E%3Cg transform='translate(30, 90) scale(0.4) rotate(15)'%3E%3Cpolygon points='50,10 84.6,30 84.6,70 50,90 15.4,70 15.4,30'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat: repeat;
  background-position: top left;
  background-size: 150px;
  pointer-events: none;
}

.page-banner::after {
  opacity: 0.02; /* Decreased opacity so it is more subtle */
}

/* Footer bottom horizontal molecular pattern */
.footer::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 250px;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 150 150' fill='none' stroke='%23ffffff' stroke-width='4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cg transform='translate(20, 20) scale(0.4)'%3E%3Cpolygon points='50,10 84.6,30 84.6,70 50,90 15.4,70 15.4,30'/%3E%3Cline x1='30' y1='38' x2='30' y2='62'/%3E%3Cline x1='50' y1='75' x2='70' y2='62'/%3E%3C/g%3E%3Cg transform='translate(100, 100) scale(0.3) rotate(45)'%3E%3Cpolygon points='50,10 84.6,30 84.6,70 50,90 15.4,70 15.4,30'/%3E%3Cline x1='84.6' y1='70' x2='100' y2='85'/%3E%3Ccircle cx='105' cy='90' r='5' fill='%23ffffff'/%3E%3C/g%3E%3Cg transform='translate(110, 30) scale(0.35) rotate(-30)'%3E%3Cline x1='10' y1='50' x2='30' y2='30'/%3E%3Cline x1='30' y1='30' x2='60' y2='40'/%3E%3Cline x1='60' y1='40' x2='80' y2='20'/%3E%3Ccircle cx='80' cy='20' r='6' fill='%23ffffff'/%3E%3C/g%3E%3Cg transform='translate(30, 90) scale(0.4) rotate(15)'%3E%3Cpolygon points='50,10 84.6,30 84.6,70 50,90 15.4,70 15.4,30'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat: repeat;
  background-position: bottom center;
  background-size: 150px;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  color: var(--text-white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(196, 162, 101, 0.1);
  border: 1px solid rgba(196, 162, 101, 0.25);
  color: var(--accent);
  padding: 7px 18px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 28px;
  font-family: var(--font-heading);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-badge svg {
  width: 15px;
  height: 15px;
}

.hero-content h1 {
  color: var(--text-white);
  margin-bottom: 24px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

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

.hero-content p {
  font-size: 1.12rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
  max-width: 520px;
}

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

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 480px;
}

.hero-image-wrapper img {
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
  width: 100%;
  height: auto;
  object-fit: cover;
}

.hero-image-wrapper::before {
  content: '';
  position: absolute;
  top: -12px;
  right: -12px;
  width: 100%;
  height: 100%;
  border: 2px solid rgba(196,162,101,0.3);
  border-radius: var(--radius-lg);
  z-index: -1;
}

.hero-floating-card {
  position: absolute;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  color: white;
  font-family: var(--font-heading);
  animation: float-card 4s ease-in-out infinite;
}

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

.hero-floating-card.card-2 {
  top: 30px;
  right: -20px;
  animation-delay: 2s;
}

.hero-floating-card .card-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
}

.hero-floating-card .card-label {
  font-size: 0.78rem;
  opacity: 0.7;
  letter-spacing: 0.02em;
}

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

/* =========================================
   STATS / COUNTERS
   ========================================= */
.stats-section {
  padding: 0;
  margin-top: -50px;
  position: relative;
  z-index: 10;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.stat-item {
  padding: 40px 30px;
  text-align: center;
  position: relative;
  transition: all var(--transition-base);
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: var(--border);
}

.stat-item:hover {
  background: var(--bg-light);
}

.stat-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  background: var(--accent-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-dark);
}

.stat-icon svg {
  width: 24px;
  height: 24px;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.03em;
}

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

.stat-label {
  font-size: 0.88rem;
  color: var(--text-light);
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* =========================================
   ABOUT PREVIEW
   ========================================= */
.about-preview {
  padding: var(--section-padding);
}

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

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

.about-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  transition: transform var(--transition-slow);
}

.about-image:hover img {
  transform: scale(1.03);
}

.about-image-badge {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: var(--primary);
  color: var(--text-white);
  padding: 18px 26px;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 700;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.about-image-badge .badge-number {
  font-size: 2.2rem;
  line-height: 1;
  color: var(--accent);
}

.about-image-badge .badge-text {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  opacity: 0.8;
}

.about-content {
  padding: 20px 0;
}

.about-content .section-tag {
  display: inline-block;
  background: var(--accent-subtle);
  color: var(--accent-dark);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font-heading);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.about-content h2 {
  margin-bottom: 20px;
  font-weight: 800;
}

.about-content p {
  color: var(--text-body);
  margin-bottom: 16px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 28px 0 32px;
}

.about-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  color: var(--text-dark);
  font-size: 0.95rem;
}

.about-feature-item svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
  flex-shrink: 0;
}

/* =========================================
   PRODUCT CATEGORIES
   ========================================= */
.products-section {
  background: var(--bg-light);
}

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

.product-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition-base);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

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

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

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

.product-card-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 20px;
  background: var(--accent-subtle);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.product-card:hover .product-card-icon {
  background: var(--primary);
}

.product-card-icon svg {
  width: 30px;
  height: 30px;
  color: var(--primary);
  transition: color var(--transition-base);
}

.product-card:hover .product-card-icon svg {
  color: var(--accent);
}

.product-card h3 {
  font-size: 1.12rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.product-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.6;
}

.product-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.88rem;
  font-family: var(--font-heading);
  transition: gap var(--transition-fast), color var(--transition-fast);
  letter-spacing: 0.01em;
}

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

.product-card .card-link svg {
  width: 16px;
  height: 16px;
}

/* =========================================
   WHY CHOOSE US
   ========================================= */
.why-us-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-card {
  background: var(--bg-white);
  padding: 36px 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-base);
  border: 1px solid var(--border);
}

.why-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: transparent;
}

.why-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.why-card-icon svg {
  width: 28px;
  height: 28px;
}

.why-card h4 {
  margin-bottom: 12px;
  font-size: 1.08rem;
  font-weight: 700;
}

.why-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* =========================================
   CERTIFICATIONS
   ========================================= */
.certifications {
  padding: 60px 0;
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cert-track {
  display: flex;
  gap: 56px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0.4;
  filter: grayscale(100%);
  transition: all var(--transition-base);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-dark);
}

.cert-item:hover {
  opacity: 1;
  filter: grayscale(0%);
  color: var(--primary);
}

.cert-item svg {
  width: 36px;
  height: 36px;
}

/* =========================================
   CTA SECTION
   ========================================= */
.cta-section {
  background: var(--primary);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(196,162,101,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 30%, rgba(196,162,101,0.04) 0%, transparent 50%);
}

.cta-section .container {
  position: relative;
  z-index: 2;
}

.cta-section h2 {
  color: var(--text-white);
  margin-bottom: 16px;
  font-weight: 800;
}

.cta-section p {
  color: rgba(255,255,255,0.55);
  font-size: 1.1rem;
  margin-bottom: 36px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.6);
  padding: 80px 0 0;
  position: relative;
  overflow: hidden;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .logo {
  margin-bottom: 20px;
}

.footer-brand .logo .logo-icon {
  background: var(--accent);
  color: var(--primary);
}

.footer-brand p {
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 24px;
  color: rgba(255,255,255,0.5);
}

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

.footer-social a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.6);
  transition: all var(--transition-fast);
}

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

.footer-social a svg {
  width: 18px;
  height: 18px;
}

.footer-col h4 {
  color: var(--text-white);
  font-size: 0.9rem;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 700;
}

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

.footer-col ul li a {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.footer-col ul li a svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.footer-contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: flex-start;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-contact-item p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.footer-contact-item a {
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.84rem;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.02em;
}

/* =========================================
   PAGE BANNER (Inner Pages)
   ========================================= */
.page-banner {
  background: linear-gradient(160deg, #000000, #0D0D0D, #1A1A1A);
  padding: 120px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(196,162,101,0.05) 0%, transparent 70%);
}

.page-banner .container {
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  color: var(--text-white);
  margin-bottom: 12px;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  align-items: center;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.45);
}

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

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

.breadcrumb span {
  color: rgba(255,255,255,0.3);
}

/* =========================================
   ABOUT PAGE
   ========================================= */
.about-story {
  padding: var(--section-padding);
}

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

.about-story-image img {
  border-radius: var(--radius-lg);
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.mission-vision {
  padding: 80px 0;
  background: var(--bg-light);
}

.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.mv-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--border);
  transition: all var(--transition-base);
}

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

.mv-card-icon {
  width: 56px;
  height: 56px;
  background: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}

.mv-card-icon svg {
  width: 28px;
  height: 28px;
}

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

.mv-card p {
  color: var(--text-light);
}

.infra-gallery {
  padding: var(--section-padding);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gallery-item:hover::after {
  opacity: 1;
}

.team-section {
  padding: 80px 0;
  background: var(--bg-light);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.team-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  border: 1px solid var(--border);
}

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

.team-card-image {
  height: 280px;
  overflow: hidden;
}

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

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

.team-card-info {
  padding: 24px;
  text-align: center;
}

.team-card-info h4 {
  margin-bottom: 4px;
}

.team-card-info p {
  color: var(--accent-dark);
  font-weight: 500;
  font-size: 0.9rem;
}

/* =========================================
   PRODUCTS PAGE
   ========================================= */
.products-listing {
  padding: var(--section-padding);
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 48px;
}

.filter-tab {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--text-body);
  background: var(--bg-light);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
  cursor: pointer;
  letter-spacing: 0.01em;
}

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

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

.product-listing-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition-base);
}

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

.product-listing-card-image {
  height: 200px;
  overflow: hidden;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

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

.product-listing-card-body .product-category-tag {
  display: inline-block;
  background: var(--accent-subtle);
  color: var(--accent-dark);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.73rem;
  font-weight: 600;
  font-family: var(--font-heading);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.product-listing-card-body h3 {
  font-size: 1.08rem;
  margin-bottom: 6px;
}

.product-listing-card-body .cas-number {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 12px;
  font-family: var(--font-heading);
}

.product-listing-card-body p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 16px;
}

.product-listing-card-body .btn {
  width: 100%;
}

/* =========================================
   PRODUCT DETAIL PAGE
   ========================================= */
.product-detail {
  padding: var(--section-padding);
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 50px;
  align-items: start;
}

.product-detail-image {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  position: sticky;
  top: 100px;
}

.product-detail-image img {
  max-width: 300px;
  width: 100%;
}

.product-detail-info h2 {
  margin-bottom: 8px;
}

.product-detail-info .product-category-tag {
  display: inline-block;
  background: var(--accent-subtle);
  color: var(--accent-dark);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-heading);
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.product-detail-description {
  margin-bottom: 32px;
}

.product-detail-description p {
  color: var(--text-body);
  line-height: 1.8;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 32px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
}

.spec-table th {
  background: var(--primary);
  color: var(--text-white);
  padding: 14px 20px;
  text-align: left;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
}

.spec-table td {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.spec-table tr:nth-child(even) {
  background: var(--bg-light);
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table td:first-child {
  font-weight: 600;
  color: var(--text-dark);
  width: 40%;
}

.applications-list {
  margin-bottom: 32px;
}

.applications-list h3 {
  margin-bottom: 16px;
}

.applications-list ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.applications-list ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-dark);
}

.applications-list ul li svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
  flex-shrink: 0;
}

.enquiry-box {
  background: var(--primary);
  border-radius: var(--radius-lg);
  padding: 32px;
  color: var(--text-white);
  text-align: center;
}

.enquiry-box h3 {
  color: var(--text-white);
  margin-bottom: 12px;
}

.enquiry-box p {
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
}

/* =========================================
   CONTACT PAGE
   ========================================= */
.contact-section {
  padding: var(--section-padding);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
}

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

.contact-info-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: all var(--transition-base);
}

.contact-info-card:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--accent);
}

.contact-info-card-icon {
  width: 50px;
  height: 50px;
  background: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-card-icon svg {
  width: 22px;
  height: 22px;
  color: var(--accent);
}

.contact-info-card h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-info-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 0;
}

.contact-info-card a {
  color: var(--primary);
  font-weight: 500;
}

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

.contact-form-wrapper {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.contact-form-wrapper h3 {
  margin-bottom: 24px;
}

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

.form-group {
  margin-bottom: 8px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 6px;
  font-family: var(--font-heading);
}

.form-group label .required {
  color: #DC3545;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-dark);
  background: var(--bg-white);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13,13,13,0.06);
}

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

.form-group input.error,
.form-group textarea.error {
  border-color: #DC3545;
  box-shadow: 0 0 0 3px rgba(220,53,69,0.08);
}

.form-error-message {
  color: #DC3545;
  font-size: 0.8rem;
  margin-top: 4px;
  display: none;
}

.form-group.has-error .form-error-message {
  display: block;
}

.form-success {
  display: none;
  background: rgba(45,156,143,0.08);
  border: 1px solid var(--teal);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  color: var(--teal);
  font-weight: 500;
}

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

.map-section {
  padding: 0 0 80px;
}

.map-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 400px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.map-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* =========================================
   BACK TO TOP
   ========================================= */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: var(--accent);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

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

.back-to-top svg {
  width: 22px;
  height: 22px;
}

/* =========================================
   LOADING ANIMATION
   ========================================= */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-white);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.5s, visibility 0.5s;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  width: 44px;
  height: 44px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* =========================================
   SCROLL ANIMATIONS
   ========================================= */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }
.animate-on-scroll.delay-5 { transition-delay: 0.5s; }

.animate-fade-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-fade-left.animated {
  opacity: 1;
  transform: translateX(0);
}

.animate-fade-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-fade-right.animated {
  opacity: 1;
  transform: translateX(0);
}

/* =========================================
   RESPONSIVE BREAKPOINTS
   ========================================= */

/* Large tablets / Small desktops */
@media (max-width: 1200px) {
  .hero .container {
    gap: 40px;
  }

  .footer-grid {
    grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: 30px;
  }
}

/* Tablets */
@media (max-width: 992px) {
  .top-bar-left {
    gap: 16px;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background: var(--bg-white);
    flex-direction: column;
    padding: 80px 24px 24px;
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: 999;
    align-items: stretch;
    gap: 4px;
    overflow-y: auto;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu a {
    padding: 14px 18px;
    font-size: 1rem;
    border-bottom: 1px solid var(--border-light);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 16px;
  }

  .nav-cta .btn {
    width: 100%;
  }

  .menu-toggle {
    display: flex;
  }

  .mobile-overlay {
    display: block;
  }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content p {
    margin: 0 auto 36px;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

  .hero {
    min-height: 75vh;
  }

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

  .stat-item:nth-child(2)::after {
    display: none;
  }

  .stat-item:nth-child(1)::after,
  .stat-item:nth-child(3)::after {
    right: 0;
  }

  .about-grid,
  .about-story-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .product-detail-grid {
    grid-template-columns: 1fr;
  }

  .product-detail-image {
    position: static;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --section-padding: 70px 0;
  }

  .top-bar {
    display: none;
  }

  .header .container {
    height: 70px;
    min-height: 70px;
  }

  .logo {
    font-size: 1.3rem;
  }

  .header .logo img {
    height: 50px;
  }

  .logo-icon {
    width: 38px;
    height: 38px;
    font-size: 0.95rem;
  }

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

  .stat-item {
    padding: 28px 20px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .why-us-grid {
    grid-template-columns: 1fr;
  }

  .mv-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }

  .team-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

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

  .applications-list ul {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .filter-tabs {
    gap: 8px;
  }

  .filter-tab {
    padding: 8px 16px;
    font-size: 0.8rem;
  }

  .page-banner {
    padding: 100px 0 50px;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  :root {
    --section-padding: 60px 0;
    --container-padding: 0 16px;
  }

  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }

  .hero {
    min-height: 70vh;
  }

  .hero-badge {
    font-size: 0.72rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    border-radius: var(--radius-md);
  }

  .stat-item {
    padding: 24px 16px;
  }

  .stat-number {
    font-size: 1.6rem;
  }

  .product-listing-grid {
    grid-template-columns: 1fr;
  }

  .contact-form-wrapper {
    padding: 24px;
  }

  .product-detail-image {
    padding: 24px;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .cert-track {
    gap: 30px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* =========================================
   UTILITY CLASSES
   ========================================= */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-white { color: var(--text-white); }
.text-light { color: var(--text-light); }
.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

/* Hide visually but keep accessible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* =========================================
   WHATSAPP FLOAT WIDGET
   ========================================= */
.whatsapp-float {
  position: fixed;
  bottom: 90px;
  right: 30px;
  width: 56px;
  height: 56px;
  background-color: #25d366;
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.3);
  z-index: 1000;
  transition: all var(--transition-base);
}

.whatsapp-float:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  color: white;
}

.whatsapp-float svg {
  width: 30px;
  height: 30px;
}