/* ==========================================================================
   REVA PHOENIX DESIGN SYSTEM — RESPONSIVE ADAPTATIONS & MOBILE NAVIGATION
   Touch ergonomics, layout reorganization, and viewport scalability
   ========================================================================== */

/* 1. Off-Canvas Mobile Drawer */
.mobile-nav-drawer,
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(360px, 85vw);
  height: 100vh;
  background: rgba(18, 21, 26, 0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-left: 1px solid var(--orange-border-strong);
  z-index: 10000;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: right 0.4s var(--ease-out-expo);
  box-shadow: -15px 0 50px rgba(0, 0, 0, 0.9);
}

.mobile-nav-drawer.open,
.mobile-nav-drawer.active,
.mobile-drawer.open,
.mobile-drawer.active {
  right: 0;
}

.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-drawer-overlay.active,
.mobile-drawer-overlay.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-graphite);
}

.mobile-drawer-close {
  background: transparent;
  border: 1px solid var(--orange-border);
  color: var(--orange-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.mobile-drawer-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  max-height: calc(100vh - 220px);
}

.mobile-drawer-link {
  font-family: var(--font-technical);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: block;
  padding: 8px 0;
  transition: color var(--transition-fast);
}

.mobile-drawer-link:hover,
.mobile-drawer-link.active {
  color: var(--orange-primary);
  transform: translateX(6px);
}

/* 2. Breakpoints & Reflows */

/* Desktop Narrow / Laptop (1141px to 1340px) */
@media (max-width: 1340px) {
  .nav-menu {
    gap: 4px;
    padding: 3px 6px;
  }

  .nav-link {
    font-size: 0.72rem;
    padding: 5px 5px;
    letter-spacing: 0.02em;
  }

  .brand-tagline {
    padding: 4px 10px 4px 8px;
    gap: 6px;
  }

  .brand-tagline .tagline-lead {
    font-size: 0.62rem;
    letter-spacing: 0.1em;
  }

  .brand-tagline .tagline-divider {
    font-size: 0.62rem;
  }

  .brand-tagline .tagline-sub {
    font-size: 0.60rem;
    letter-spacing: 0.1em;
  }

  .brand-wrapper {
    gap: 8px;
  }

  .hero-headline {
    font-size: clamp(1.9rem, 2.6vw, 2.75rem);
  }
}

/* Tablet & Smaller Laptops (<= 1140px) */
@media (max-width: 1140px) {
  .brand-wrapper {
    margin-left: 0;
  }

  .nav-menu {
    display: none;
  }

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

  .service-row-card {
    grid-template-columns: 80px 1.2fr 1.8fr auto;
    gap: 16px;
  }

  .footer-columns-grid {
    grid-template-columns: 1fr auto;
    gap: 2.5rem;
  }

  .about-grid,
  .leadership-grid,
  .lab-division-box,
  .contact-hub-grid {
    grid-template-columns: 1fr;
  }

  .about-visual-card.about-building-card {
    margin: 2rem auto 0 auto;
    justify-self: center;
    max-width: 440px;
  }

  .hero-split-layout {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-left-col,
  .hero-right-col {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .hero-right-col {
    margin-left: 0;
    margin-top: 2rem;
    justify-content: center;
  }

  .hero-building-visual {
    width: 85%;
    opacity: 0.7;
  }

  .hero-headline {
    font-size: clamp(2rem, 4vw, 3.1rem);
  }
}

/* Tablet (<= 860px) */
@media (max-width: 860px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .api-grid {
    grid-template-columns: 1fr;
  }

  .service-row-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .service-index {
    font-size: 1.8rem;
  }

  .service-action-wrap {
    justify-content: flex-start;
  }

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

  .core-pillars-grid,
  .about-matrix-3p {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .hero-headline .hero-line {
    white-space: normal;
  }

  .hero-headline {
    font-size: clamp(1.85rem, 4.8vw, 2.5rem);
  }
}

/* Mobile (<= 580px) */
@media (max-width: 580px) {
  :root {
    --nav-height: 70px;
  }

  .brand-phoenix-logo-img {
    height: 48px;
  }

  .hero-section {
    padding-top: calc(var(--nav-height) + 1.5rem);
    min-height: auto;
    padding-bottom: 3.5rem;
  }

  #leadership.section-wrapper {
    padding-top: 3.5rem;
  }

  .hero-headline .hero-line {
    white-space: normal;
  }

  .hero-headline {
    font-size: clamp(1.85rem, 8vw, 2.5rem);
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .hero-telemetry-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .labs-filter-strip {
    flex-direction: column;
    align-items: stretch;
  }

  .lab-search-input-wrap {
    min-width: 100%;
  }

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

  .footer-bottom-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .lightbox-prev-btn {
    left: 10px;
  }

  .lightbox-next-btn {
    right: 10px;
  }

  .lightbox-close-btn {
    top: 15px;
    right: 15px;
  }

  .hero-medallions-duo {
    gap: 0.75rem;
  }

  .hero-years-badge-img,
  .hero-nabl-badge-img {
    height: clamp(120px, 32vw, 150px);
    width: auto;
    max-width: 100%;
  }

  .hero-nabl-interactive-pill {
    padding: 3px 8px;
    font-size: 0.6rem;
  }
}

/* Universal Responsive Text Wrap Enforcement */
@media (max-width: 1024px) {
  h1, h2, h3, h4, h5, h6,
  p, .section-title, .section-description,
  .hero-headline, .hero-subhead, .project-headline {
    overflow-wrap: break-word !important;
    word-wrap: break-word !important;
    white-space: normal !important;
    max-width: 100% !important;
  }
}

@media (max-width: 640px) {
  h1, h2, h3, h4, h5, h6,
  p, .section-title, .section-description,
  .hero-headline, .hero-subhead, .project-headline,
  .lab-card-title, .service-card-title, .doc-title {
    overflow-wrap: break-word !important;
    word-wrap: break-word !important;
    white-space: normal !important;
    text-align: left !important;
    max-width: 100% !important;
  }
}