/* Components: Header, Mega Dropdown, Hero Slider, Cards, Forms, Lightbox, Footer */

/* Topbar */
.topbar {
  border-bottom: 1px solid var(--line);
  font-size: 0.8rem;
  color: #bdc6d1;
  background: #05070a;
}

.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 8px 0;
}

.topbar a {
  color: var(--lime);
  font-weight: 600;
}

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

/* Header & Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 11, 16, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
  transition: padding var(--transition), background var(--transition);
}

.nav-inner {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.04em;
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--lime), var(--cyan));
  display: grid;
  place-items: center;
  color: #05080c;
  font-weight: 900;
  box-shadow: 0 4px 20px rgba(87, 231, 255, 0.3);
  font-size: 1.2rem;
}

.logo small {
  display: block;
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  gap: 26px;
  align-items: center;
  font-size: 0.92rem;
  font-weight: 500;
  color: #d1d9e2;
}

.nav-links a {
  padding: 6px 0;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--lime);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--lime);
  border-radius: 2px;
}

/* Services Dropdown */
.nav-item-dropdown {
  position: relative;
}

.dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.dropdown-trigger svg,
.dropdown-trigger span.arrow {
  font-size: 0.75rem;
  transition: transform var(--transition);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: -20px;
  width: 320px;
  background: #0e141d;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  padding: 12px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 25px rgba(87, 231, 255, 0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  display: grid;
  gap: 4px;
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown:focus-within .dropdown-menu,
.nav-item-dropdown.touch-open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text);
  font-size: 0.88rem;
  transition: background var(--transition), color var(--transition);
}

.dropdown-item:hover {
  background: rgba(200, 255, 77, 0.1);
  color: var(--lime);
}

.dropdown-item .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.dropdown-item:hover .dot {
  background: var(--lime);
  box-shadow: 0 0 10px var(--lime);
}

/* Nav CTA */
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 1.25rem;
  cursor: pointer;
}

/* Mobile Nav Drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #080b10f8;
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--line);
  padding: 24px 20px 80px;
  overflow-y: auto;
  z-index: 49;
}

.mobile-nav.open {
  display: block;
}

.mobile-nav-group {
  margin-bottom: 24px;
}

.mobile-nav-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav-link {
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid transparent;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: rgba(200, 255, 77, 0.08);
  border-color: rgba(200, 255, 77, 0.25);
  color: var(--lime);
}

/* Hero Slider (4 Banners) */
.hero {
  padding: 24px 0 44px;
  overflow: hidden;
}

.hero-slider {
  position: relative;
  width: min(1480px, calc(100% - 32px));
  margin: 0 auto;
  border-radius: 26px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: #080d15;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.85);
  isolation: isolate;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.75s ease, visibility 0.75s;
}

.hero-slide.active {
  position: relative;
  opacity: 1;
  visibility: visible;
}

.hero-slide img {
  width: 100%;
  height: clamp(380px, 46vw, 680px);
  object-fit: cover;
}

.hero-slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(3, 7, 10, 0.65) 0%, rgba(3, 7, 10, 0.2) 60%, transparent 100%),
              linear-gradient(0deg, rgba(3, 7, 10, 0.5) 0%, transparent 40%);
  pointer-events: none;
}

.hero-slide-caption {
  position: absolute;
  z-index: 2;
  left: clamp(20px, 4.5vw, 65px);
  bottom: clamp(24px, 4.5vw, 55px);
  max-width: 480px;
  padding: 24px 28px;
  border-radius: 20px;
  background: rgba(7, 16, 25, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
}

.hero-slide-caption h1 {
  font-size: clamp(1.8rem, 3.6vw, 3.2rem);
  line-height: 1.05;
  margin: 12px 0 14px;
}

.hero-slide-caption p {
  font-size: clamp(0.88rem, 1.2vw, 1.02rem);
  color: #dbe4ee;
  margin-bottom: 20px;
}

.hero-slider-arrow {
  position: absolute;
  z-index: 5;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(6, 16, 27, 0.85);
  color: #fff;
  font-size: 1.8rem;
  display: grid;
  place-items: center;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: all var(--transition);
}

.hero-slider-arrow:hover {
  background: var(--lime);
  color: #060a0f;
  border-color: var(--lime);
  transform: translateY(-50%) scale(1.08);
}

.hero-slider-arrow.prev { left: 16px; }
.hero-slider-arrow.next { right: 16px; }

.hero-slider-dots {
  position: absolute;
  z-index: 6;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 100px;
  background: rgba(5, 9, 13, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-slider-dot {
  width: 9px;
  height: 9px;
  border: 0;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: all var(--transition);
}

.hero-slider-dot.active {
  width: 28px;
  background: var(--lime);
  box-shadow: 0 0 15px rgba(200, 255, 77, 0.6);
}

/* Under-hero Badges */
.hero-under {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  padding-top: 22px;
  color: #c7d0db;
  font-size: 0.85rem;
}

.hero-under span {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-under b {
  color: var(--lime);
}

/* Service Cards (3D Depth) */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.service-card {
  background: linear-gradient(145deg, #131923, #0d121a);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(200, 255, 77, 0.5);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 25px rgba(87, 231, 255, 0.15);
}

.service-card-img {
  height: 230px;
  position: relative;
  overflow: hidden;
  background: #151d28;
}

.service-card-img img {
  transition: transform 0.7s ease;
}

.service-card:hover .service-card-img img {
  transform: scale(1.08);
}

.service-card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(8, 11, 16, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--lime);
}

.service-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.service-card-body h3 {
  margin-bottom: 8px;
  color: #fff;
  transition: color var(--transition);
}

.service-card:hover .service-card-body h3 {
  color: var(--lime);
}

.service-card-body p {
  font-size: 0.91rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  flex: 1;
}

.service-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  font-size: 0.88rem;
  font-weight: 700;
}

.service-card-link {
  color: var(--lime);
  display: flex;
  align-items: center;
  gap: 6px;
}

.service-card-link:hover {
  text-decoration: underline;
}

/* Engineering & Process Cards */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.process-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  transition: border-color var(--transition);
}

.process-card:hover {
  border-color: rgba(200, 255, 77, 0.5);
}

.process-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--lime);
  margin-bottom: 14px;
}

.process-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

/* Portfolio Grid & Lightbox */
.portfolio-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.filter-btn {
  padding: 10px 20px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--lime);
  color: #080d14;
  border-color: var(--lime);
  box-shadow: 0 4px 15px rgba(200, 255, 77, 0.25);
}

.portfolio-masonry {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.project-item {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #121822;
  cursor: pointer;
  height: 290px;
}

.project-item img {
  height: 100%;
  transition: transform 0.7s ease;
}

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

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(5, 8, 13, 0.95) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 22px;
  z-index: 2;
}

.project-overlay small {
  color: var(--lime);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
}

.project-overlay h3 {
  color: #fff;
  font-size: 1.25rem;
  margin: 6px 0 4px;
}

.project-overlay p {
  color: #cbd5e1;
  font-size: 0.85rem;
  margin: 0;
}

/* Lightbox Modal */
.lightbox-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(15px);
  z-index: 100;
  place-items: center;
  padding: 30px;
}

.lightbox-modal.active {
  display: grid;
}

.lightbox-content {
  max-width: 900px;
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  background: #0d1219;
  border: 1px solid var(--line);
  position: relative;
}

.lightbox-img-wrap {
  height: 480px;
  background: #000;
}

.lightbox-details {
  padding: 24px;
}

.lightbox-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  font-size: 1.4rem;
  display: grid;
  place-items: center;
  cursor: pointer;
  z-index: 3;
}

/* Forms: Contact & Quotation Workflow */
.form-card {
  background: #0e141c;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 36px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #d2dbe6;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  background: #080c12;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 13px 16px;
  color: var(--text);
  font-size: 0.92rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--lime);
  box-shadow: 0 0 15px rgba(200, 255, 77, 0.2);
}

.field textarea {
  min-height: 110px;
  resize: vertical;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 22px;
}

.breadcrumbs a {
  color: var(--text-muted);
}

.breadcrumbs a:hover {
  color: var(--lime);
}

.breadcrumbs span.sep {
  color: var(--line);
}

/* Page Hero Header for Subpages */
.page-hero {
  padding: 60px 0 45px;
  background: linear-gradient(180deg, #090f17 0%, #06090e 100%);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: 10%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(87, 231, 255, 0.08), transparent 70%);
  pointer-events: none;
}

/* Floating WhatsApp Button */
.floating-whatsapp {
  position: fixed;
  z-index: 99;
  bottom: 26px;
  right: 26px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25d366;
  color: #ffffff;
  display: grid;
  place-items: center;
  font-size: 30px;
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.45);
  text-decoration: none;
  transition: transform 0.3s, box-shadow 0.3s;
  animation: wa-pulse 2.2s infinite;
}

.floating-whatsapp:hover {
  transform: scale(1.1);
  color: #ffffff;
  box-shadow: 0 14px 40px rgba(37, 211, 102, 0.7);
}

@keyframes wa-pulse {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
  70% { box-shadow: 0 0 0 18px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* Footer */
.footer {
  padding: 70px 0 28px;
  border-top: 1px solid var(--line);
  background: #05070a;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid var(--line);
}

.footer-col h4 {
  font-size: 1.05rem;
  margin-bottom: 20px;
  color: #fff;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 11px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--lime);
  transform: translateX(3px);
}

.footer-contact-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.footer-contact-item b {
  color: #fff;
  display: block;
}

.copyright {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  color: var(--text-dim);
  font-size: 0.82rem;
}

@media (max-width: 980px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .menu-btn { display: block; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .copyright { flex-direction: column; align-items: flex-start; gap: 10px; }
  .floating-whatsapp { bottom: 20px; right: 20px; width: 50px; height: 50px; font-size: 26px; }
}