/* ==========================================================================
   AAROHI TECH LAB — OFFICIAL DESIGN SYSTEM & CODEBASE MODERNIZATION
   Brand Palette:
   - Primary Navy:       #0B1730
   - Brand Green:        #39D353 (Circuit Green)
   - Teal Accent:        #16B8A6
   - Deep Dark Surface:  #071224 / #0D1C2E
   - Card Surface Dark:  #0F223D
   - Light Background:   #FFFFFF
   - Alternate Light:    #F5F8FA
   - Primary Text Dark:  #F0F4F8
   - Secondary Text Dark:#94A3B8
   - Primary Text Light: #172033
   - Secondary Text Light:#667085
   - Border Light:       #E3E8EF
   - Border Dark:        rgba(255, 255, 255, 0.12)
   ========================================================================== */

:root {
  /* Brand Colors */
  --brand-navy: #0B1730;
  --brand-navy-deep: #071224;
  --brand-navy-light: #132448;
  --brand-green: #39D353;
  --brand-green-hover: #2eb844;
  --brand-green-subtle: rgba(57, 211, 83, 0.12);
  --brand-green-border: rgba(57, 211, 83, 0.32);
  --teal-accent: #16B8A6;
  --teal-subtle: rgba(22, 184, 166, 0.14);
  --teal-border: rgba(22, 184, 166, 0.3);

  /* Light Theme Surfaces (for high-contrast sections) */
  --bg-main: #FFFFFF;
  --bg-alt: #F5F8FA;
  --text-main: #172033;
  --text-muted: #667085;
  --border-light: #E3E8EF;
  --card-light: #FFFFFF;

  /* Dark Theme Surfaces (Brand Foundation) */
  --bg-dark: #0B1730;
  --bg-darker: #071224;
  --surface-dark: #0F223D;
  --surface-dark-hover: #152E52;
  --text-dark: #F0F4F8;
  --text-dark-muted: #94A3B8;
  --border-dark: rgba(255, 255, 255, 0.12);
  --border-dark-glow: rgba(57, 211, 83, 0.35);

  /* Semantic Aliases */
  --primary: var(--brand-green);
  --primary-hover: var(--brand-green-hover);
  --accent: var(--teal-accent);
  --neon: var(--brand-green);
  --bg: var(--bg-dark);
  --text: var(--text-dark);
  --muted: var(--text-dark-muted);
  --border: var(--border-dark);

  /* Spacing Scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Typography */
  --font-family-base: "Plus Jakarta Sans", "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.16);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.24);
  --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 24px rgba(57, 211, 83, 0.2);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 220ms ease;
  --transition-slow: 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Base Styles & Reset Helpers
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family-base);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-dark);
  background-color: var(--bg-dark);
  overflow-x: hidden;
}

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--brand-green);
  color: var(--brand-navy);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 99999;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 15px;
  outline: 3px solid #ffffff;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-darker);
}
::-webkit-scrollbar-thumb {
  background: #1c3554;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--brand-green);
}

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

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

a:hover {
  color: #55e66d;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--brand-green);
  outline-offset: 3px;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

section {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
  position: relative;
}

@media (max-width: 767px) {
  section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }
}

/* ==========================================================================
   Typography & Section Headers
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  color: #ffffff;
  font-family: var(--font-family-base);
  font-weight: 700;
  line-height: 1.25;
  margin-top: 0;
  margin-bottom: var(--space-3);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--brand-green);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.section-heading {
  margin-bottom: var(--space-10);
}

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

.section-heading h2 {
  font-size: clamp(1.85rem, 3.2vw, 2.6rem);
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--space-3);
}

.section-heading p {
  color: var(--text-dark-muted);
  font-size: 1.05rem;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 0;
  line-height: 1.7;
}

/* ==========================================================================
   Buttons & Links
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-family-base);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none !important;
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand-green);
  color: var(--brand-navy) !important;
  border-color: var(--brand-green);
  box-shadow: 0 4px 16px rgba(57, 211, 83, 0.25);
}

.btn-primary:hover {
  background: var(--brand-green-hover);
  color: var(--brand-navy) !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(57, 211, 83, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: #ffffff !important;
  border-color: var(--border-dark);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--brand-green);
  color: var(--brand-green) !important;
  transform: translateY(-2px);
}

.btn-teal {
  background: var(--teal-accent);
  color: #ffffff !important;
  border-color: var(--teal-accent);
}

.btn-teal:hover {
  background: #139e8e;
  transform: translateY(-2px);
}

/* Preloader */
.js-preloader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-darker);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  z-index: 99999;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.js-preloader.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-inner {
  position: relative;
  width: 50px;
  height: 50px;
}

.preloader-inner .dot {
  position: absolute;
  width: 14px;
  height: 14px;
  top: 18px;
  left: 18px;
  background: var(--brand-green);
  border-radius: 50%;
  animation: pulsePreloader 1.2s infinite ease-in-out;
}

.preloader-inner .dots span {
  display: block;
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--teal-accent);
  border-radius: 50%;
}

.preloader-inner .dots span:nth-child(1) { top: 0; left: 20px; }
.preloader-inner .dots span:nth-child(2) { top: 20px; right: 0; }
.preloader-inner .dots span:nth-child(3) { bottom: 0; left: 20px; }

@keyframes pulsePreloader {
  0%, 100% { transform: scale(0.6); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
}

/* ==========================================================================
   Header & Official Navigation Bar
   ========================================================================== */

.header-area {
  position: sticky !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 1000 !important;
  background: rgba(11, 23, 48, 0.94) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
  height: 80px !important;
  transition: background-color 0.3s ease, box-shadow 0.3s ease !important;
}

.header-area.background-header {
  background: rgba(7, 18, 36, 0.98) !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35) !important;
}

.header-area .main-nav {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  height: 80px !important;
  min-height: 80px !important;
  background: transparent !important;
}

/* Official Logo Presentation */
.header-area .main-nav .logo {
  display: flex !important;
  align-items: center !important;
  gap: var(--space-2) !important;
  text-decoration: none !important;
  margin: 0 !important;
  padding: 0 !important;
  line-height: 1 !important;
  background: transparent !important;
}

.header-area .main-nav .logo img {
  height: 40px !important;
  width: auto !important;
  max-width: 190px !important;
  display: block !important;
  object-fit: contain !important;
}

/* Desktop Nav Links */
.header-area .main-nav .nav {
  display: flex !important;
  align-items: center !important;
  gap: var(--space-1) !important;
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
  background: transparent !important;
}

.header-area .main-nav .nav li {
  margin: 0 !important;
  padding: 0 !important;
  display: inline-flex !important;
  align-items: center !important;
}

.header-area .main-nav .nav li a {
  display: inline-flex !important;
  align-items: center !important;
  padding: 8px 14px !important;
  font-size: 0.92rem !important;
  font-weight: 600 !important;
  color: #d1dbe6 !important;
  border-radius: var(--radius-md) !important;
  transition: all var(--transition-fast) !important;
  text-decoration: none !important;
  line-height: 1.4 !important;
}

.header-area .main-nav .nav li a:hover,
.header-area .main-nav .nav li a.active {
  color: #ffffff !important;
  background: rgba(57, 211, 83, 0.12) !important;
}

.header-area .main-nav .nav li a.active {
  color: var(--brand-green) !important;
}

/* Biochar Kiln Nav Highlight */
.header-area .main-nav .nav li a.nav-featured {
  color: var(--brand-green) !important;
  background: rgba(57, 211, 83, 0.1) !important;
  border: 1px solid rgba(57, 211, 83, 0.25) !important;
}

.header-area .main-nav .nav li a.nav-featured:hover {
  background: rgba(57, 211, 83, 0.18) !important;
  color: #ffffff !important;
}

/* Header Action Button */
.header-area .main-nav .nav li .nav-cta-btn {
  margin-left: var(--space-3) !important;
  padding: 9px 20px !important;
  font-size: 0.88rem !important;
  font-weight: 700 !important;
  border-radius: var(--radius-full) !important;
  background: var(--brand-green) !important;
  color: var(--brand-navy) !important;
  box-shadow: 0 4px 12px rgba(57, 211, 83, 0.25) !important;
  transition: all var(--transition-fast) !important;
}

.header-area .main-nav .nav li .nav-cta-btn:hover {
  background: var(--brand-green-hover) !important;
  color: var(--brand-navy) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 18px rgba(57, 211, 83, 0.35) !important;
}

/* Mobile Hamburger Menu Trigger */
.menu-trigger {
  display: none !important;
  cursor: pointer !important;
  width: 44px !important;
  height: 44px !important;
  align-items: center !important;
  justify-content: center !important;
  background: rgba(255, 255, 255, 0.05) !important;
  border: 1px solid var(--border-dark) !important;
  border-radius: var(--radius-md) !important;
  position: relative !important;
  padding: 0 !important;
}

.menu-trigger span,
.menu-trigger span::before,
.menu-trigger span::after {
  display: block !important;
  width: 22px !important;
  height: 2px !important;
  background-color: #ffffff !important;
  border-radius: 2px !important;
  position: relative !important;
  transition: all 0.25s ease-in-out !important;
}

.menu-trigger span::before,
.menu-trigger span::after {
  content: "" !important;
  position: absolute !important;
  left: 0 !important;
}

.menu-trigger span::before {
  top: -7px !important;
}

.menu-trigger span::after {
  top: 7px !important;
}

.menu-trigger.active span {
  background-color: transparent !important;
}

.menu-trigger.active span::before {
  top: 0 !important;
  transform: rotate(45deg) !important;
  background-color: var(--brand-green) !important;
}

.menu-trigger.active span::after {
  top: 0 !important;
  transform: rotate(-45deg) !important;
  background-color: var(--brand-green) !important;
}

/* Mobile Nav Drawer / Overlay */
@media (max-width: 991px) {
  .menu-trigger {
    display: inline-flex !important;
  }

  .header-area .main-nav .nav {
    display: none !important;
    position: absolute !important;
    top: 80px !important;
    left: 0 !important;
    right: 0 !important;
    background: #09162c !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12) !important;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.6) !important;
    padding: var(--space-4) var(--space-6) var(--space-6) !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: var(--space-2) !important;
  }

  .header-area .main-nav .nav.active,
  .header-area .main-nav .nav[style*="display: block"] {
    display: flex !important;
  }

  .header-area .main-nav .nav li {
    display: block !important;
    width: 100% !important;
  }

  .header-area .main-nav .nav li a {
    display: block !important;
    padding: 12px 16px !important;
    font-size: 1rem !important;
    border-radius: var(--radius-sm) !important;
  }

  .header-area .main-nav .nav li .nav-cta-btn {
    display: block !important;
    text-align: center !important;
    margin-left: 0 !important;
    margin-top: var(--space-3) !important;
    padding: 12px 20px !important;
  }
}

/* ==========================================================================
   Hero Section (Modernized Engineering Presentation)
   ========================================================================== */

.hero {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  background: radial-gradient(circle at 80% 20%, rgba(22, 184, 166, 0.12) 0%, transparent 50%),
              radial-gradient(circle at 10% 80%, rgba(57, 211, 83, 0.08) 0%, transparent 45%),
              var(--bg-dark);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-dark);
}

.hero-copy {
  padding-right: var(--space-6);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-green);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
  padding: 6px 14px;
  border: 1px solid var(--brand-green-border);
  border-radius: var(--radius-full);
  background: var(--brand-green-subtle);
}

.hero-copy h1 {
  font-size: clamp(2rem, 3.8vw, 3.1rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-4);
  color: #ffffff;
}

.hero-copy h1 span.gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, var(--brand-green) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-copy p {
  font-size: 1.1rem;
  color: var(--text-dark-muted);
  line-height: 1.75;
  margin-bottom: var(--space-6);
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  color: #c5d5e6;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-full);
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font-family-mono);
  letter-spacing: 0.02em;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.tag:hover {
  border-color: var(--brand-green);
  color: var(--brand-green);
}

/* Hero Feature Card */
.hero-card {
  background: linear-gradient(145deg, rgba(19, 36, 72, 0.8), rgba(11, 23, 48, 0.95));
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-xl), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-green), var(--teal-accent));
}

.hero-card img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--space-3);
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-card li {
  color: var(--text-dark-muted);
  font-size: 0.92rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hero-card li::before {
  content: "✓";
  color: var(--brand-green);
  font-weight: 700;
}

.hero-card li:last-child {
  border-bottom: none;
}

/* ==========================================================================
   Stats Bar
   ========================================================================== */

.stats-bar {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
  background: var(--brand-navy-deep);
  border-bottom: 1px solid var(--border-dark);
}

.stats-bar .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.stat-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4);
  text-align: center;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.stat-box:hover {
  transform: translateY(-3px);
  border-color: var(--brand-green-border);
  background: rgba(57, 211, 83, 0.04);
}

.stat-box strong {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: var(--space-1);
  letter-spacing: -0.02em;
}

.stat-box span {
  display: block;
  font-size: 0.88rem;
  color: var(--text-dark-muted);
  line-height: 1.4;
}

@media (max-width: 991px) {
  .stats-bar .container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 575px) {
  .stats-bar .container {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about-section {
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
}

.about-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-dark);
  position: relative;
}

.about-image img {
  width: 100%;
  height: 100%;
  min-height: 400px;
  max-height: 520px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.check-list {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.check-list div {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: #e2eaf4;
  font-size: 0.98rem;
  line-height: 1.6;
}

.check-list i {
  color: var(--brand-green);
  font-size: 1.1rem;
  margin-top: 3px;
  flex-shrink: 0;
}

/* ==========================================================================
   Services Grid
   ========================================================================== */

#services {
  background: radial-gradient(circle at 20% 80%, rgba(57, 211, 83, 0.05) 0%, transparent 40%),
              var(--brand-navy-deep);
  border-bottom: 1px solid var(--border-dark);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  background: linear-gradient(160deg, rgba(19, 36, 72, 0.6), rgba(11, 23, 48, 0.9));
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.service-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  transition: background var(--transition-base);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--brand-green-border);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), var(--shadow-glow);
}

.service-card:hover::after {
  background: linear-gradient(90deg, var(--brand-green), var(--teal-accent));
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-green-subtle);
  border: 1px solid var(--brand-green-border);
  color: var(--brand-green);
  margin-bottom: var(--space-5);
  font-size: 1.5rem;
}

.service-card h3 {
  font-size: 1.25rem;
  color: #ffffff;
  margin-bottom: var(--space-3);
}

.service-card p {
  color: var(--text-dark-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 0;
}

@media (max-width: 991px) {
  .service-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

/* ==========================================================================
   Projects & Featured Industrial Product
   ========================================================================== */

#portfolio {
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.project-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: var(--shadow-lg);
}

/* Spotlight Card for Biochar Kiln Sensor */
.project-card.featured-project {
  border: 1px solid var(--brand-green-border);
  background: linear-gradient(145deg, rgba(57, 211, 83, 0.1), rgba(11, 23, 48, 0.95));
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3), 0 0 20px rgba(57, 211, 83, 0.1);
  grid-column: span 2;
}

@media (max-width: 991px) {
  .project-card.featured-project {
    grid-column: span 1;
  }
  .project-grid {
    grid-template-columns: 1fr;
  }
}

.project-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--brand-green);
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}

.project-card h3 {
  font-size: 1.35rem;
  color: #ffffff;
  margin-bottom: var(--space-2);
}

.project-card p {
  color: var(--text-dark-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-8);
  justify-content: center;
}

.tech-list span {
  border-radius: var(--radius-full);
  padding: 8px 16px;
  background: rgba(57, 211, 83, 0.08);
  color: var(--brand-green);
  border: 1px solid var(--brand-green-border);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-family-mono);
}

/* ==========================================================================
   Engineering Process Steps (How We Work)
   ========================================================================== */

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.process-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-5);
  transition: all var(--transition-base);
  position: relative;
}

.process-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-green-border);
  background: rgba(57, 211, 83, 0.04);
}

.process-card .step {
  color: var(--brand-green);
  font-weight: 800;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.process-card h3 {
  font-size: 1.15rem;
  color: #ffffff;
  margin-bottom: var(--space-2);
}

.process-card p {
  color: var(--text-dark-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 0;
}

@media (max-width: 991px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 575px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Reviews / Client Testimonials
   ========================================================================== */

#reviews {
  background: var(--brand-navy-deep);
  border-bottom: 1px solid var(--border-dark);
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.review-card {
  background: linear-gradient(160deg, rgba(19, 36, 72, 0.5), rgba(11, 23, 48, 0.8));
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-green-border);
}

.review-card .stars {
  color: #ffbe2e;
  font-size: 1.1rem;
  letter-spacing: 3px;
  margin-bottom: var(--space-3);
}

.review-card blockquote {
  color: #e2edf8;
  font-size: 0.98rem;
  line-height: 1.8;
  font-style: normal;
  margin: 0 0 var(--space-4) 0;
  flex-grow: 1;
}

.review-card cite {
  color: var(--text-dark-muted);
  font-style: normal;
  font-size: 0.88rem;
  line-height: 1.4;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--space-3);
}

.review-card cite strong {
  color: #ffffff;
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

@media (max-width: 991px) {
  .review-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

/* ==========================================================================
   Trusted By / Partners Bar
   ========================================================================== */

.brands-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: center;
  margin-top: var(--space-6);
}

.brands-row .brand-link {
  background: rgba(255, 255, 255, 0.04);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  text-decoration: none;
  transition: all var(--transition-base);
}

.brands-row .brand-link:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--brand-green);
  transform: translateY(-3px);
}

.brands-row .brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
}

.brands-row img {
  max-height: 50px;
  width: auto;
  object-fit: contain;
  border-radius: 4px;
}

.brand-name {
  font-size: 0.85rem;
  color: var(--text-dark-muted);
  font-weight: 600;
}

/* ==========================================================================
   Contact Section & Interactive Inquiry Form
   ========================================================================== */

#contact {
  background: radial-gradient(circle at 80% 80%, rgba(22, 184, 166, 0.1) 0%, transparent 40%),
              var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
}

.contact-card {
  background: linear-gradient(145deg, rgba(19, 36, 72, 0.7), rgba(11, 23, 48, 0.95));
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl);
  height: 100%;
}

.contact-card h3 {
  font-size: 1.4rem;
  color: #ffffff;
  margin-bottom: var(--space-3);
}

.contact-card p {
  color: var(--text-dark-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}

.contact-card .check-list div {
  margin-bottom: 6px;
}

.contact-card .check-list a {
  color: #e2edf8;
  font-weight: 500;
}

.contact-card .check-list a:hover {
  color: var(--brand-green);
}

.form-group {
  margin-bottom: var(--space-3);
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #d1dbe6;
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-dark);
  background: rgba(255, 255, 255, 0.05);
  padding: 12px 16px;
  color: #ffffff;
  font-family: var(--font-family-base);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--brand-green);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(57, 211, 83, 0.2);
}

.form-control::placeholder {
  color: #7a8fa6;
}

/* Form Alert Box */
.contact-alert {
  display: none;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  font-size: 0.92rem;
  line-height: 1.6;
}

.contact-alert.success {
  display: block;
  background: rgba(57, 211, 83, 0.15);
  border: 1px solid var(--brand-green);
  color: #e6fff0;
}

/* ==========================================================================
   Product Page: Kon-Tiki Biochar Kiln Sensor Specialized Components
   ========================================================================== */

.product-hero {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  background: radial-gradient(circle at 75% 25%, rgba(57, 211, 83, 0.12) 0%, transparent 45%),
              radial-gradient(circle at 15% 85%, rgba(22, 184, 166, 0.1) 0%, transparent 40%),
              var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-green-subtle);
  color: var(--brand-green);
  border: 1px solid var(--brand-green-border);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.product-hero h1 {
  font-size: clamp(2rem, 3.2vw, 3rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  color: #ffffff;
}

.product-hero-lead {
  font-size: 1.08rem;
  color: #d1e2da;
  line-height: 1.75;
  margin-bottom: var(--space-6);
}

.highlight-metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.metric-pill {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 14px 10px;
  text-align: center;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.metric-pill:hover {
  transform: translateY(-2px);
  border-color: var(--brand-green);
}

.metric-pill strong {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--brand-green);
  margin-bottom: 3px;
  line-height: 1.2;
}

.metric-pill span {
  font-size: 0.75rem;
  color: var(--text-dark-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  line-height: 1.3;
}

@media (max-width: 991px) {
  .highlight-metric-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* TC-Gateway Pro Visual Schematic Card */
.product-card-visual {
  background: linear-gradient(150deg, rgba(19, 36, 72, 0.9), rgba(7, 18, 36, 0.98));
  border: 1px solid var(--brand-green-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-xl), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
}

.product-status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-4);
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-family: var(--font-family-mono);
  color: var(--brand-green);
  font-weight: 600;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--brand-green);
  box-shadow: 0 0 10px var(--brand-green);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.schematic-diagram {
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-family: var(--font-family-mono);
  font-size: 0.82rem;
  color: var(--brand-green);
  border: 1px dashed var(--brand-green-border);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.diagram-step {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  color: #e2edf8;
  font-size: 0.88rem;
}

.diagram-step i {
  color: var(--brand-green);
  font-size: 1rem;
}

/* Comparison Table */
.comparison-table-wrapper {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  overflow-x: auto;
  box-shadow: var(--shadow-lg);
  -webkit-overflow-scrolling: touch;
}

.table-custom {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
}

.table-custom th {
  background: rgba(19, 36, 72, 0.95);
  color: var(--brand-green);
  padding: 18px 24px;
  font-weight: 700;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 2px solid var(--brand-green-border);
  text-align: left;
}

.table-custom td {
  padding: 18px 24px;
  color: #e2edf8;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.95rem;
  line-height: 1.6;
}

.table-custom tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Hardware Component Boxes */
.component-box {
  background: linear-gradient(160deg, rgba(19, 36, 72, 0.5), rgba(11, 23, 48, 0.8));
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.component-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--brand-green), var(--teal-accent));
}

.spec-list {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0 0 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.spec-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: 0.92rem;
  color: #e2edf8;
  line-height: 1.5;
}

.spec-list li i {
  color: var(--brand-green);
  margin-top: 3px;
  flex-shrink: 0;
}

@media (max-width: 767px) {
  .spec-list {
    grid-template-columns: 1fr;
  }
}

/* Feature & Benefit Cards */
.feature-benefit-card {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.feature-benefit-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-green-border);
  box-shadow: var(--shadow-md);
}

.feature-icon-badge {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--brand-green-subtle);
  border: 1px solid var(--brand-green-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-green);
  font-size: 1.25rem;
  margin-bottom: var(--space-4);
}

.feature-benefit-card h3 {
  font-size: 1.15rem;
  color: #ffffff;
  margin-bottom: var(--space-2);
}

.feature-benefit-card p {
  color: var(--text-dark-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 0;
  flex-grow: 1;
}

/* Kiln Kit Packages */
.package-item {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.package-item:hover {
  transform: translateY(-4px);
  border-color: var(--brand-green);
  background: rgba(57, 211, 83, 0.05);
}

.package-item.popular {
  border-color: var(--brand-green-border);
  background: linear-gradient(160deg, rgba(57, 211, 83, 0.08), rgba(11, 23, 48, 0.9));
  box-shadow: 0 8px 30px rgba(57, 211, 83, 0.15);
}

.package-icon {
  font-size: 2rem;
  color: var(--brand-green);
  margin-bottom: var(--space-3);
}

.package-item h4 {
  font-size: 1.2rem;
  color: #ffffff;
  margin-bottom: var(--space-2);
}

.package-item .package-subtitle {
  color: var(--brand-green);
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: var(--space-3);
}

.package-item p {
  color: var(--text-dark-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 0;
  flex-grow: 1;
}

/* FAQ Cards */
.faq-card {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  margin-bottom: var(--space-4);
  transition: border-color var(--transition-fast);
}

.faq-card:hover {
  border-color: var(--brand-green-border);
}

.faq-card h4 {
  font-size: 1.1rem;
  color: #ffffff;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  line-height: 1.4;
}

.faq-card h4 i {
  color: var(--brand-green);
  margin-top: 3px;
  flex-shrink: 0;
}

.faq-card p {
  color: var(--text-dark-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 0;
  padding-left: 28px;
}

@media (max-width: 575px) {
  .faq-card p {
    padding-left: 0;
  }
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, rgba(57, 211, 83, 0.16), rgba(22, 184, 166, 0.12)),
              #0d1d38;
  border: 1px solid var(--brand-green-border);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-8);
  text-align: center;
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: var(--space-3);
}

.cta-banner p {
  max-width: 700px;
  margin: 0 auto var(--space-6) auto;
  font-size: 1.05rem;
  color: #dbeae2;
  line-height: 1.7;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
  background: #071020;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-dark-muted);
  font-size: 0.92rem;
}

.footer a {
  color: var(--text-dark-muted);
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--brand-green);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: flex-end;
}

@media (max-width: 767px) {
  .footer-nav {
    justify-content: center;
    margin-top: var(--space-4);
  }
  .footer {
    text-align: center;
  }
}

/* ==========================================================================
   Floating WhatsApp Widget
   ========================================================================== */

.whatsappicon {
  position: fixed;
  right: 24px;
  bottom: 24px;
  background: #25d366;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35);
  z-index: 1200;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.whatsappicon:hover {
  transform: scale(1.08) translateY(-3px);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.5);
}

.whatsappicon a {
  color: #ffffff !important;
  font-size: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}