/* ============================================
   THEME SYSTEM — paste ABOVE existing :root
   ============================================ */

/* LIGHT THEME — Industrial Chemical / B2B */
[data-theme="light"] {
  --theme-bg:         #f0f4f8;
  --theme-bg-alt:     #dde6f0;
  --theme-card-bg:    #ffffff;
  --theme-text:       #0f172a;
  --theme-text-muted: #475569;
  --theme-border:     #cbd5e1;
  --theme-navbar:     rgba(15, 23, 42, 0.92);
  --theme-navbar-scrolled: #0f172a;
  --theme-footer-bg:  #0f172a;
  --theme-stats-bg:   linear-gradient(90deg, #dde6f0, #cbd5e1);
  --theme-input-bg:   #ffffff;
  --theme-map-bg:     #dde6f0;
  --theme-shadow:     0 4px 24px rgba(0,0,0,0.10);
}

/* DARK THEME — default, matches existing design */
[data-theme="dark"] {
  --theme-bg:         #0b1120;
  --theme-bg-alt:     #111827;
  --theme-card-bg:    #1e293b;
  --theme-text:       #ffffff;
  --theme-text-muted: #cbd5e1;
  --theme-border:     #334155;
  --theme-navbar:     rgba(0,0,0,0.7);
  --theme-navbar-scrolled: #000000;
  --theme-footer-bg:  #000000;
  --theme-stats-bg:   linear-gradient(90deg, #0f172a, #111827);
  --theme-input-bg:   #0f172a;
  --theme-map-bg:     #1e293b;
  --theme-shadow:     0 4px 24px rgba(0,0,0,0.4);
}

/* Smooth transition on every element */
*, *::before, *::after {
  transition:
    background-color 0.35s ease,
    color 0.35s ease,
    border-color 0.35s ease,
    box-shadow 0.35s ease;
}

/* ── Toggle Button ── */
.theme-toggle {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.3);
  border-radius: 50px;
  width: 44px;
  height: 26px;
  cursor: pointer;
  position: relative;
  margin-left: 18px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.theme-toggle:hover {
  border-color: var(--accent);
  background: rgba(0,191,255,0.08);
}

.theme-toggle .toggle-icon {
  font-size: 1rem;
  line-height: 1;
  pointer-events: none;
  transition: transform 0.4s ease, opacity 0.3s ease;
}

[data-theme="light"] .theme-toggle {
  border-color: rgba(15,23,42,0.3);
  background: rgba(15,23,42,0.06);
}
[data-theme="light"] .theme-toggle:hover {
  border-color: var(--accent);
}

:root {
  --primary: #0f172a;
  --secondary: #111827;
  --accent: #00bfff;
  --gold: #d4af37;
  --white: #ffffff;
  --text: #cbd5e1;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  background: #0b1120;
  color: var(--white);
  overflow-x: hidden;
}

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

.custom-navbar {
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(12px);
}

.navbar-brand {
  font-size: 1.5rem;
}

.nav-link {
  color: white !important;
  margin-left: 15px;
}

/* NEW — video hero */
.hero-section {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  background: #0b1120; /* fallback while video loads */
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: 0;
  object-fit: cover;
}

.hero-video-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65); /* matches your original 0.7 overlay */
  z-index: 1;
}

.hero-section h1 {
  font-size: clamp(1.8rem, 3.5vw, 3.2rem);
  font-weight: 700;
  white-space: nowrap;
}

.hero-text {
  color: var(--text);
  margin: 25px 0;
  max-width: 650px;
}

.btn-primary-custom {
  background: var(--accent);
  border: none;
  padding: 12px 30px;
  color: white;
  border-radius: 50px;
  transition: 0.3s;
}

.btn-primary-custom:hover {
  background: var(--gold);
  transform: translateY(-3px);
}

.bg-dark-section {
  background: #111827;
}

.section-title {
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 600;
}

.product-card,
.why-card,
.process-card,
.testimonial-card {
  background: #1e293b;
  padding: 35px;
  border-radius: 20px;
  transition: 0.4s;
  height: 100%;
}

.product-card:hover,
.why-card:hover,
.process-card:hover,
.testimonial-card:hover {
  transform: translateY(-10px);
  border: 1px solid var(--accent);
}

.why-card i {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 15px;
}

.stats-section {
  padding: 80px 0;
  background: linear-gradient(90deg, #0f172a, #111827);
}

.counter {
  color: var(--accent);
  font-size: 3rem;
  font-weight: bold;
}

.process-card span {
  color: var(--gold);
  font-size: 2rem;
  font-weight: bold;
}

.contact-form .form-control {
  margin-bottom: 20px;
  padding: 14px;
  background: #0f172a;
  border: 1px solid #334155;
  color: white;
}

.map-box {
  background: var(--theme-map-bg) !important;
  color: var(--theme-text-muted) !important;
  height: 100%;
  min-height: 350px;
  border-radius: 20px;
  overflow: hidden;
}

.map-box iframe {
  width: 100%;
  height: 100%;
  min-height: 350px;
  display: block;
}

.footer {
  padding: 30px 0;
  background: black;
}

.footer a {
  color: white;
  text-decoration: none;
  margin-left: 15px;
}

.whatsapp-float {
  position: fixed;
  bottom: 25px;
  right: 25px;
  background: #25d366;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  font-size: 28px;
  z-index: 999;
}

@media(max-width: 768px) {

  .hero-section h1 {
    font-size: 2.5rem;
  }

  .section-padding {
    padding: 70px 0;
  }

}

/* ============================================
   THEME OVERRIDES — paste at BOTTOM of style.css
   ============================================ */

body {
  background: var(--theme-bg) !important;
  color: var(--theme-text) !important;
}

.custom-navbar {
  background: var(--theme-navbar) !important;
}

.bg-dark-section {
  background: var(--theme-bg-alt) !important;
}

.product-card,
.why-card,
.process-card,
.testimonial-card {
  background: var(--theme-card-bg) !important;
  box-shadow: var(--theme-shadow);
}

.product-card h4,
.product-card p,
.why-card h5,
.process-card h5,
.testimonial-card p,
.testimonial-card h6 {
  color: var(--theme-text) !important;
}

.stats-section {
  background: var(--theme-stats-bg) !important;
}

.stats-section p {
  color: var(--theme-text-muted) !important;
}

.contact-form .form-control {
  background: var(--theme-input-bg) !important;
  border-color: var(--theme-border) !important;
  color: var(--theme-text) !important;
}

.contact-form .form-control::placeholder {
  color: var(--theme-text-muted) !important;
}

.footer {
  background: var(--theme-footer-bg) !important;
}

/* Accordion theming */
.accordion-item {
  background: var(--theme-card-bg) !important;
  border-color: var(--theme-border) !important;
}

.accordion-button {
  background: var(--theme-card-bg) !important;
  color: var(--theme-text) !important;
}

.accordion-button:not(.collapsed) {
  background: var(--theme-bg-alt) !important;
  color: var(--accent) !important;
  box-shadow: none !important;
}

.accordion-button::after {
  filter: var(--theme-text) !important;
}

.accordion-body {
  color: var(--theme-text-muted) !important;
}

/* Light theme hero text fix */
[data-theme="light"] .hero-text {
  color: #cbd5e1 !important;
}

[data-theme="light"] .hero-section h1 {
  color: #ffffff !important;
}

/* About section text */
[data-theme="light"] #about h2,
[data-theme="light"] #about p,
[data-theme="light"] #why h2,
[data-theme="light"] #process h2,
[data-theme="light"] #faq h2,
[data-theme="light"] .text-center h2 {
  color: var(--theme-text) !important;
}

[data-theme="light"] #about p {
  color: var(--theme-text-muted) !important;
}

/* ============================================
   MODERN INDUSTRY PRODUCT SECTION (UPDATED)
============================================ */

.expandable-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--theme-border);
  backdrop-filter: blur(8px);
  padding: 30px !important;
  border-radius: 16px !important;
  background: var(--theme-card-bg);
  box-shadow: var(--theme-shadow);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color 0.4s ease, 
              box-shadow 0.4s ease !important;
}

/* Subtle accent line on hover */
.expandable-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.expandable-card:hover {
  transform: translateY(-5px) !important;
  border-color: rgba(0, 191, 255, 0.4) !important;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15) !important;
}

/* Active Open Card States */
.expandable-card.active {
  border-color: rgba(0, 191, 255, 0.6) !important;
  background: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Header Adjustments */
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.card-title-area {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-category-tag {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gold);
  font-weight: 600;
}

.product-detail-card h4 {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 0;
  color: var(--theme-text);
}

/* Premium Expand Button UI */
.expand-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--theme-border);
  background: rgba(0, 191, 255, 0.06);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.expandable-card:hover .expand-btn {
  border-color: rgba(0, 191, 255, 0.3);
}

/* Dynamic State Icons */
.expandable-card.active .expand-btn {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.expandable-card.active .expand-btn i::before {
  content: "\f659" !important; /* Bootstrap icon 'dash-lg' alternative dynamically */
  transform: rotate(180deg);
}

/* Smooth Accordion Mechanics */
.expand-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              opacity 0.3s ease, 
              visibility 0.3s ease;
}

.expandable-card.active .expand-content {
  max-height: 600px; /* High safety threshold for double column lists */
  opacity: 1;
  visibility: visible;
  margin-top: 20px;
  padding-top: 15px;
  border-top: 1px dashed var(--theme-border);
}

/* Context Elements */
.product-description {
  font-size: 0.9rem;
  color: var(--theme-text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
}

.product-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.product-list li {
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  color: var(--theme-text-muted);
  transition: color 0.2s ease;
}

.product-list li i {
  font-size: 0.75rem;
  color: var(--accent);
  transition: transform 0.2s ease;
}

.product-list li:hover {
  color: var(--theme-text);
}

.product-list li:hover i {
  transform: translateX(3px);
}

/* Grid Optimization */
.two-column-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 20px;
}

/* Light Theme Theme Adjustments */
[data-theme="light"] .expandable-card {
  border-color: rgba(15, 23, 42, 0.08);
}
[data-theme="light"] .expand-btn {
  background: rgba(15, 23, 42, 0.04);
  border-color: rgba(15, 23, 42, 0.1);
}

/* Mobile Media Query Breakpoints */
@media(max-width: 768px) {
  .two-column-list {
    grid-template-columns: 1fr;
  }
  .expandable-card {
    padding: 22px !important;
  }
  .product-detail-card h4 {
    font-size: 1.2rem;
  }
}

/* ============================================
   VISION & MISSION SECTION
============================================ */

.vision-card h4 {
  margin-bottom: 18px;
  color: var(--white);
}

.vision-card p {
  color: var(--theme-text-muted);
  line-height: 1.8;
}

.experience-highlight {
  margin-top: 50px;
  text-align: center;
  padding: 40px;
  border-radius: 24px;
  background: linear-gradient(
    135deg,
    rgba(0, 191, 255, 0.12),
    rgba(212, 175, 55, 0.10)
  );
  border: 1px solid rgba(255,255,255,0.08);
}

.experience-highlight h5 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.experience-highlight p {
  max-width: 850px;
  margin: auto;
  color: var(--theme-text-muted);
  line-height: 1.8;
}

/* ============================================
   RESPONSIVE IMPROVEMENTS
============================================ */

@media(max-width: 768px) {

  .two-column-list {
    columns: 1;
  }

  .experience-highlight {
    padding: 28px 20px;
  }

}
.expandable-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(12px);
  transition: all 0.35s ease;
}

.expandable-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0,191,255,0.4);
  box-shadow:
    0 10px 35px rgba(0,0,0,0.15),
    0 0 0 1px rgba(0,191,255,0.08);
}

/* Header Row */
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
}

/* Expand Button */
.expand-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: rgba(0,191,255,0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.3s ease;
  flex-shrink: 0;
}

.expand-btn:hover {
  background: var(--accent);
  color: #fff;
  transform: rotate(90deg);
}

/* Expandable Area */
.expand-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition:
    max-height 0.45s ease,
    opacity 0.3s ease,
    margin-top 0.3s ease;
}

/* Active State */
.expandable-card.active .expand-content {
  max-height: 500px;
  opacity: 1;
  margin-top: 22px;
}

.expandable-card.active .expand-btn i {
  transform: rotate(45deg);
}

/* Product List Improvements */
.product-list li {
  font-size: 0.96rem;
  padding-left: 22px;
}

/* Better Spacing */
.product-detail-card h4 {
  margin-bottom: 0;
}

/* Light Theme Support */
[data-theme="light"] .expand-btn {
  background: rgba(15,23,42,0.08);
}

/* Mobile */
@media(max-width:768px){

  .expand-btn {
    width: 38px;
    height: 38px;
  }

}
/* ============================================
   HIGH-CLARITY CRISP BRAND LOGO INTEGRATION
   ============================================ */

.custom-navbar .navbar-brand {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  margin-right: 2rem;
  border-radius: 6px;
  background-color: #ffffff; /* Gives the light.png asset a crisp, solid white backdrop */
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08); /* Modern subtle card elevation */
  transition: transform 0.2s ease-in-out;
}

.brand-logo {
  /* Exact integer mathematical scaling to prevent sub-pixel blur */
  height: 48px;         
  width: auto;         
  
  object-fit: contain;
  display: block;
  
  /* Advanced browser engine flags for maximum line sharpness */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  transform: translateZ(0); 
}

/* Dynamic Navbar thematic adjustments matching your design tokens */
[data-theme="light"] .custom-navbar .navbar-brand {
  background-color: #ffffff; /* Keeps the white backing seamless */
}

[data-theme="dark"] .custom-navbar .navbar-brand {
  background-color: #ffffff; /* Serves as an integrated protective contrast plate */
}

/* Premium hover micro-interaction */
.custom-navbar .navbar-brand:hover {
  transform: scale(1.02);
}

/* Responsive constraints for crisp readability on mobile displays */
@media (max-width: 991px) {
  .brand-logo {
    height: 40px;
    width: auto;
  }
}

@media (max-width: 480px) {
  .custom-navbar .navbar-brand {
    margin-right: 0.5rem;
    padding: 3px 6px;
  }
  .brand-logo {
    height: 32px;
    width: auto;
  }
}

.cert-card {
  background: var(--theme-card-bg) !important;
  box-shadow: var(--theme-shadow);
  padding: 35px 25px;
  border-radius: 20px;
  transition: 0.4s;
  height: 100%;
}

.cert-card:hover {
  transform: translateY(-10px);
  border: 1px solid var(--accent);
}

.cert-card i {
  font-size: 2.8rem;
  color: var(--accent);
  margin-bottom: 15px;
}

.cert-card h5 {
  color: var(--theme-text) !important;
  margin-bottom: 8px;
}

.cert-card p {
  color: var(--theme-text-muted) !important;
  margin-bottom: 20px;
}

.cert-btn {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  color: var(--accent) !important;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: 0.3s;
}

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