/* ==========================================================================
   NAVIGATION BAR, FOOTER & GLOBAL MODAL STYLES
   ========================================================================== */

/* Main Navigation Header */

.main-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-icon-box {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--cyan-accent) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.brand-title-sub {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1;
  margin-top: 2px;
}

/* Desktop Navigation Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  color: #cbd5e1;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 8px 0;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

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

/* Header Action */
.nav-action {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-nav-quote {
  padding: 9px 18px;
  font-size: 0.88rem;
  font-weight: 600;
}

/* Mobile Hamburger Button */
.hamburger-btn {
  display: none;
  background: transparent;
  color: #ffffff;
  padding: 8px;
  cursor: pointer;
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background: #0f172a;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  z-index: 2000;
  transition: right var(--transition-normal);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
}

.mobile-drawer.open {
  right: 0;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.drawer-close-btn {
  background: transparent;
  color: #94a3b8;
  padding: 4px;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.mobile-nav-link {
  color: #e2e8f0;
  font-size: 1.1rem;
  font-weight: 600;
  padding: 8px 0;
}

.mobile-nav-link.active {
  color: var(--cyan-accent);
}

.drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.drawer-backdrop.active {
  opacity: 1;
  visibility: visible;
}

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

.main-footer {
  background: #090f1d;
  color: #94a3b8;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.92rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-badges-row {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.footer-cert-badge {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #e2e8f0;
  padding: 4px 8px;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 4px;
}

.footer-col-title {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links-list a {
  color: #94a3b8;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links-list a:hover {
  color: #ffffff;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.9rem;
}

.footer-contact-icon {
  color: var(--cyan-accent);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}

/* Floating Quick Quote / WhatsApp Helpdesk Button */
.floating-whatsapp-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  color: #ffffff;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: all var(--transition-normal);
}

.floating-whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.55);
}

/* ==========================================================================
   RFQ & Price Quotation Modal
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  padding: 16px;
}

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

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  padding: 32px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  color: #64748b;
  cursor: pointer;
}

.modal-title {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.modal-product-preview {
  background: #f1f5f9;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-form-group {
  margin-bottom: 16px;
}

.modal-form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.modal-form-input, .modal-form-select, .modal-form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  background: #ffffff;
  font-size: 0.9rem;
}

.modal-form-input:focus, .modal-form-select:focus, .modal-form-textarea:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

@media (max-width: 992px) {
  .nav-links {
    display: none;
  }
  .hamburger-btn {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}