/* ==========================================================================
   United SSD Chem - Clean, Modern & Fully Mobile-Responsive Stylesheet
   ========================================================================== */

:root {
  --primary: #FF6B00;
  --primary-hover: #E05D00;
  --primary-light: #FFF4ED;
  --dark: #0F172A;
  --dark-slate: #1E293B;
  --gray-bg: #F8FAFC;
  --gray-border: #E2E8F0;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --white: #FFFFFF;
  --radius: 8px;
  --shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 8px 24px rgba(15, 23, 42, 0.12);
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: var(--text-main);
  background-color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  width: 100%;
}

body.menu-open {
  overflow: hidden;
}

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

ul {
  list-style: none;
}

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

button, input, select, textarea {
  font-family: inherit;
}

/* Container */
.container {
  width: 90%;
  max-width: 1140px;
  margin: 0 auto;
}

/* Typography & Titles */
.section {
  padding: 5rem 0;
}

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

.section-title {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3rem;
}

.section-title h2 {
  font-size: 2.2rem;
  color: var(--dark);
  font-weight: 800;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-title p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.highlight {
  color: var(--primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  white-space: nowrap;
  touch-action: manipulation;
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(255, 107, 0, 0.35);
}

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

.btn-outline:hover {
  background-color: var(--dark-slate);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.6rem 1rem;
  font-size: 0.88rem;
  width: 100%;
}

.btn-lg {
  padding: 0.9rem 1.8rem;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

/* Badge */
.badge {
  display: inline-block;
  background-color: var(--primary-light);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.35rem 0.9rem;
  border-radius: 50px;
  margin-bottom: 1rem;
  border: 1px solid rgba(255, 107, 0, 0.2);
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-border);
  z-index: 1000;
  width: 100%;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 75px;
}

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

.nav-logo img {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.nav-item {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--dark);
}

.nav-item:hover {
  color: var(--primary);
}

.mobile-nav-btn {
  display: none;
}

.desktop-nav-btn {
  display: inline-flex;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-toggle {
  display: none;
  background: #F1F5F9;
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  width: 44px;
  height: 44px;
  font-size: 1.35rem;
  color: var(--dark);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.menu-toggle:hover {
  background: #E2E8F0;
  color: var(--primary);
}

.menu-overlay {
  display: none;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  position: relative;
  padding: 6.5rem 0 5.5rem;
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.76) 0%, rgba(15, 23, 42, 0.42) 55%, rgba(15, 23, 42, 0.20) 100%),
              url('../assets/images/hero-bg.jpg') center right / cover no-repeat;
  color: var(--white);
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 2.85rem;
  font-weight: 800;
  line-height: 1.2;
  color: #FFFFFF;
  margin-bottom: 1.2rem;
  letter-spacing: -0.02em;
  text-shadow: 0 3px 14px rgba(0, 0, 0, 0.85);
}

.hero-text h1 .highlight {
  color: var(--primary);
  background: linear-gradient(135deg, #FF944D 0%, #FF6B00 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
}

.hero-text p {
  font-size: 1.12rem;
  color: #F8FAFC;
  line-height: 1.7;
  margin-bottom: 2rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.85);
}

.hero .badge {
  background: rgba(255, 107, 0, 0.2);
  color: #FFA458;
  border: 1px solid rgba(255, 107, 0, 0.4);
}

.hero .btn-outline {
  border-color: rgba(255, 255, 255, 0.45);
  color: #FFFFFF;
}

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

.hero-buttons {
  display: flex;
  gap: 1rem;
}

.hero-image {
  display: flex;
  justify-content: center;
}

.logo-card {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 2.5rem;
  border-radius: var(--radius-lg, 16px);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.4);
  text-align: center;
  max-width: 320px;
  width: 100%;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.logo-card img {
  max-width: 180px;
  margin: 0 auto 1.2rem;
}

.logo-card h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 0.3rem;
}

.logo-card p {
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 600;
}

/* ==========================================================================
   About Section
   ========================================================================== */
#about .section-title {
  max-width: 820px;
}

.about-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.about-card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.about-icon {
  width: 52px;
  height: 52px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.2rem;
}

.about-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.7rem;
}

.about-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Products Grid
   ========================================================================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

.product-tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--primary-light);
  color: var(--primary);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  margin-bottom: 0.8rem;
}

.product-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.6rem;
}

.product-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  line-height: 1.55;
}

.product-specs {
  border-top: 1px solid var(--gray-border);
  border-bottom: 1px solid var(--gray-border);
  padding: 0.8rem 0;
  margin-bottom: 1.4rem;
  font-size: 0.88rem;
}

.product-specs li {
  margin-bottom: 0.35rem;
  color: var(--text-main);
}

.product-specs li:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Photo Gallery Section
   ========================================================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.gallery-card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius-lg, 16px);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
}

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

.gallery-img-wrapper {
  position: relative;
  height: 340px;
  background: linear-gradient(145deg, #F8FAFC 0%, #EEF2F6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: var(--radius-lg, 16px);
}

.gallery-img-wrapper img {
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-card:hover .gallery-img-wrapper img {
  transform: scale(1.06);
}

.gallery-img-wrapper .img-contain {
  max-height: 88%;
  max-width: 88%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 6px 14px rgba(15, 23, 42, 0.08));
}

.gallery-img-wrapper .img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 2;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.gallery-card:hover .gallery-overlay {
  opacity: 1;
}

.gallery-zoom-btn {
  background: var(--primary);
  color: var(--white);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 1.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(255, 107, 0, 0.45);
  transform: scale(0.8);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), background var(--transition);
}

.gallery-card:hover .gallery-zoom-btn {
  transform: scale(1.05);
}

.gallery-zoom-btn:hover {
  background: var(--primary-hover);
}

/* ==========================================================================
   Video Demonstrations Section
   ========================================================================== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2.2rem;
}

.video-card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius-lg, 16px);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.video-player-wrapper {
  position: relative;
  width: 100%;
  background: #0B0F19;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-top-left-radius: var(--radius-lg, 16px);
  border-top-right-radius: var(--radius-lg, 16px);
}

.video-player-wrapper video {
  width: 100%;
  max-height: 440px;
  display: block;
  background: #000;
  outline: none;
}

.video-meta {
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.video-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(255, 107, 0, 0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  width: fit-content;
  margin-bottom: 0.8rem;
}

.video-meta h3 {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.video-meta p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.4rem;
  flex-grow: 1;
}

.video-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.video-actions .btn {
  padding: 0.55rem 1.15rem;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

/* ==========================================================================
   Lightbox Modal
   ========================================================================== */
body.lightbox-open {
  overflow: hidden;
}

.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.28s ease, visibility 0.28s ease;
  padding: 1.5rem;
}

.lightbox-modal.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.lightbox-content {
  position: relative;
  z-index: 3001;
  max-width: 900px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: scale(0.94);
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox-modal.active .lightbox-content {
  transform: scale(1);
}

.lightbox-img-wrapper {
  max-height: 78vh;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.lightbox-img-wrapper img {
  max-width: 100%;
  max-height: 78vh;
  border-radius: var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  object-fit: contain;
  background: rgba(255, 255, 255, 0.03);
}

.lightbox-caption {
  margin-top: 1rem;
  text-align: center;
  color: #fff;
  width: 100%;
}

.lightbox-counter {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(255, 107, 0, 0.15);
  padding: 0.25rem 0.85rem;
  border-radius: 20px;
  border: 1px solid rgba(255, 107, 0, 0.3);
}

.lightbox-btn {
  position: absolute;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.15rem;
  transition: all var(--transition);
  z-index: 3002;
}

.lightbox-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  transform: scale(1.1);
}

.lightbox-close {
  top: -55px;
  right: 0;
}

.lightbox-prev {
  left: -65px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-prev:hover {
  transform: translateY(-50%) scale(1.1);
}

.lightbox-next {
  right: -65px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-next:hover {
  transform: translateY(-50%) scale(1.1);
}

/* ==========================================================================
   Why Choose Us
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.8rem;
}

.feature-item {
  text-align: center;
  padding: 1.6rem;
  border-radius: var(--radius);
  border: 1px solid var(--gray-border);
  background: var(--white);
  box-shadow: var(--shadow);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--dark);
  color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.feature-item h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
}

.contact-card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  padding: 2.2rem;
  box-shadow: var(--shadow);
}

.form-status {
  padding: 1.2rem;
  border-radius: var(--radius);
  margin-bottom: 1.4rem;
  font-size: 0.95rem;
  line-height: 1.5;
  display: block;
}

.form-status.success {
  background-color: #ECFDF5;
  border: 1px solid #10B981;
  color: #065F46;
}

.form-status.error {
  background-color: #FEF2F2;
  border: 1px solid #EF4444;
  color: #991B1B;
}

.status-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}

.status-header i {
  font-size: 1.3rem;
  color: #10B981;
}

.status-header h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #065F46;
  margin: 0;
}

.status-actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1rem;
}

.status-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
}

.btn-whatsapp {
  background-color: #25D366;
  color: #FFFFFF;
  border: none;
}

.btn-whatsapp:hover {
  background-color: #1EBE5B;
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-telegram {
  background-color: #229ED9;
  color: #FFFFFF;
  border: none;
}

.btn-telegram:hover {
  background-color: #1A88BD;
  color: #FFFFFF;
  transform: translateY(-2px);
}

.form-group {
  margin-bottom: 1.2rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.4rem;
}

.form-group label i {
  color: var(--primary);
  margin-right: 0.35rem;
}

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

.form-input {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  font-size: 16px; /* Prevents auto-zoom on mobile iOS */
  color: var(--dark);
  background-color: var(--white);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.12);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.info-box {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  box-shadow: var(--shadow);
}

.info-box i {
  font-size: 1.4rem;
  color: var(--primary);
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.info-box h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.2rem;
}

.info-box p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.info-box a {
  color: var(--dark);
  font-weight: 600;
}

.info-box a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.btn-telegram-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  padding: 0.45rem 1.05rem;
  background: linear-gradient(135deg, #2AABEE 0%, #229ED9 100%);
  color: #FFFFFF !important;
  border-radius: 6px;
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none !important;
  box-shadow: 0 4px 12px rgba(34, 158, 217, 0.35);
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-telegram-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(34, 158, 217, 0.55);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--dark);
  color: #CBD5E1;
  padding: 4rem 0 2rem;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 3rem;
}

.footer-brand img {
  height: 48px;
  background: var(--white);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 1.2rem;
}

.footer-brand p {
  font-size: 0.9rem;
  color: #94A3B8;
  line-height: 1.6;
}

.footer-links h4, .footer-notice h4 {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links a {
  display: block;
  font-size: 0.9rem;
  color: #94A3B8;
  margin-bottom: 0.6rem;
  padding: 0.2rem 0;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-notice p {
  font-size: 0.85rem;
  color: #94A3B8;
  line-height: 1.6;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Tablets & Medium Screens (<= 992px) */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }

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

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

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

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

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

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

  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

/* Mobile Devices (<= 768px) */
@media (max-width: 768px) {
  .section {
    padding: 3.5rem 0;
  }

  .section-title {
    margin-bottom: 2rem;
  }

  .section-title h2 {
    font-size: 1.75rem;
  }

  .section-title p {
    font-size: 0.95rem;
  }

  /* Compact Navbar */
  .nav-container {
    height: 68px;
  }

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

  .menu-toggle {
    display: flex;
  }

  .desktop-nav-btn {
    display: none;
  }

  /* Mobile Dropdown Navigation Drawer */
  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 1.2rem 1.6rem 1.6rem;
    gap: 0;
    border-bottom: 2px solid var(--primary);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1001;
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-item {
    width: 100%;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--gray-border);
    font-size: 1.05rem;
    display: block;
  }

  .mobile-nav-btn {
    display: flex;
    margin-top: 1rem;
    width: 100%;
    padding: 0.85rem;
    border-bottom: none;
    font-size: 1rem;
  }

  /* Dimmed Backdrop Overlay */
  .menu-overlay {
    display: block;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }

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

  /* Hero on Mobile */
  .hero {
    padding: 3.2rem 0 2.5rem;
  }

  .hero-text h1 {
    font-size: 2.1rem;
  }

  .hero-text p {
    font-size: 1rem;
    margin-bottom: 1.6rem;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
    gap: 0.8rem;
  }

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

  .logo-card {
    padding: 2rem;
    max-width: 280px;
  }

  .logo-card img {
    max-width: 150px;
  }

  /* Grids Stacked */
  .about-content {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }

  .about-card {
    padding: 1.6rem;
  }

  .product-grid {
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }

  .product-card {
    padding: 1.5rem;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }

  .video-grid {
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }

  .gallery-img-wrapper {
    height: 280px;
  }

  .lightbox-content {
    width: 95%;
  }

  .lightbox-img-wrapper {
    max-height: 60vh;
  }

  .lightbox-img-wrapper img {
    max-height: 60vh;
  }

  .lightbox-close {
    top: -46px;
    right: 0;
    width: 40px;
    height: 40px;
  }

  .lightbox-prev {
    left: 10px;
    top: auto;
    bottom: -60px;
    transform: none;
    width: 42px;
    height: 42px;
  }

  .lightbox-prev:hover {
    transform: scale(1.1);
  }

  .lightbox-next {
    right: 10px;
    top: auto;
    bottom: -60px;
    transform: none;
    width: 42px;
    height: 42px;
  }

  .lightbox-next:hover {
    transform: scale(1.1);
  }

  .lightbox-caption {
    margin-bottom: 3.5rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }

  /* Contact on Mobile */
  .contact-card {
    padding: 1.6rem;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-group {
    margin-bottom: 1.1rem;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 2.2rem;
  }
}

/* Small Phones (<= 480px) */
@media (max-width: 480px) {
  .container {
    width: 92%;
  }

  .hero-text h1 {
    font-size: 1.85rem;
  }

  .section-title h2 {
    font-size: 1.55rem;
  }

  .badge {
    font-size: 0.8rem;
  }

  .btn-lg {
    padding: 0.8rem 1.4rem;
    font-size: 0.95rem;
  }

  .contact-card {
    padding: 1.3rem;
  }

  .info-box {
    padding: 1.2rem;
  }
}

/* ==========================================================================
   Floating Chat Buttons (Telegram & WhatsApp)
   ========================================================================== */

/* Telegram Floating Button */
.telegram-float {
  position: fixed;
  bottom: 100px;
  right: 28px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #2AABEE 0%, #229ED9 100%);
  border-radius: 50%;
  box-shadow: 0 6px 24px rgba(34, 158, 217, 0.45);
  text-decoration: none;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.3s ease;
  cursor: pointer;
}

.telegram-float:hover {
  transform: scale(1.12) translateY(-3px);
  box-shadow: 0 10px 32px rgba(34, 158, 217, 0.65);
}

.telegram-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.telegram-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(42, 171, 238, 0.4);
  animation: tg-pulse 2.2s ease-out infinite;
  animation-delay: 1.1s;
  z-index: 1;
}

@keyframes tg-pulse {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  70% {
    transform: scale(1.7);
    opacity: 0;
  }
  100% {
    transform: scale(1.7);
    opacity: 0;
  }
}

.telegram-tooltip {
  position: absolute;
  right: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: #1E293B;
  color: #fff;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 7px 12px;
  border-radius: 6px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.18);
}

.telegram-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: #1E293B;
}

.telegram-float:hover .telegram-tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* WhatsApp Floating Button */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  border-radius: 50%;
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
  text-decoration: none;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.3s ease;
  cursor: pointer;
}

.whatsapp-float:hover {
  transform: scale(1.12) translateY(-3px);
  box-shadow: 0 10px 32px rgba(37, 211, 102, 0.6);
}

.whatsapp-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}

/* Pulse ring animation */
.whatsapp-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(37, 211, 102, 0.4);
  animation: wa-pulse 2.2s ease-out infinite;
  z-index: 1;
}

@keyframes wa-pulse {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  70% {
    transform: scale(1.7);
    opacity: 0;
  }
  100% {
    transform: scale(1.7);
    opacity: 0;
  }
}

/* Tooltip */
.whatsapp-tooltip {
  position: absolute;
  right: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: #1E293B;
  color: #fff;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 7px 12px;
  border-radius: 6px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.18);
}

.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: #1E293B;
}

.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* Mobile adjustments */
@media (max-width: 480px) {
  .telegram-float {
    bottom: 84px;
    right: 18px;
    width: 54px;
    height: 54px;
  }

  .whatsapp-float {
    bottom: 20px;
    right: 18px;
    width: 54px;
    height: 54px;
  }

  .telegram-tooltip,
  .whatsapp-tooltip {
    display: none;
  }
}