/**
 * CODECURV RESPONSIVE & MOBILE OVERHAUL
 * Footer Centering · Symmetrical Padding · Zero Variable Leaks
 */

/* ==========================================================================
   1. GLOBAL OVERFLOW & ACCESSIBILITY SAFEGUARDS
   ========================================================================== */

html, body {
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
  box-sizing: border-box;
}

@media (max-width: 1024px), (pointer: coarse), (hover: none) {
  #drafting-cursor {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
  }
}

.sorter-slat,
.btn,
.status-tag,
#mobile-nav-toggle {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

input, select, textarea {
  font-size: 16px !important;
}

body.nav-locked {
  overflow: hidden;
  touch-action: none;
}

.btn,
.sorter-slat,
.sorter-btn-calibrate,
.input-calibrated,
.workbench-input {
  min-height: 44px;
}

/* ==========================================================================
   2. SOLID OPAQUE MOBILE NAVIGATION DRAWER
   ========================================================================== */

.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  background-color: var(--bg-canvas) !important;
  z-index: var(--z-drawer);
  padding: var(--space-6, 24px);
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  box-sizing: border-box;
  transition: opacity 200ms var(--ease-snap), transform 200ms var(--ease-snap);
}

.mobile-nav-drawer.is-open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-4, 16px);
  border-bottom: 1px solid var(--rule-base);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4, 16px);
  margin: var(--space-6, 24px) 0;
}

.mobile-nav-link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-serif);
  font-size: 1.65rem;
  color: var(--ink-primary);
  padding: var(--space-2, 8px) 0;
  border-bottom: 1px solid var(--rule-subtle);
}

.mobile-nav-link-item span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--vermilion);
}

.mobile-drawer-footer {
  padding-top: var(--space-4, 16px);
  border-top: 1px solid var(--rule-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-3, 12px);
}

/* ==========================================================================
   3. MOBILE BREAKPOINTS (320px - 640px)
   ========================================================================== */

@media (max-width: 640px) {
  /* Footer Datum Bar Centering */
  .footer-datum-content {
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
    gap: var(--space-3, 12px) !important;
  }

  .footer-copyright,
  .footer-protocol-links {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
    flex-wrap: wrap !important;
    width: 100% !important;
    gap: 6px 8px !important;
  }
}

@media (max-width: 430px) {
  /* Navigation Bar */
  .nav-shell {
    top: 8px;
    padding: 0 var(--space-3, 12px);
  }

  .nav-container {
    height: 52px;
    padding: 0 var(--space-3, 12px);
  }

  .nav-track,
  .nav-desktop-status {
    display: none !important;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  /* Symmetrical Containers */
  .container,
  .container-wide,
  .container-reading {
    padding-left: var(--space-4, 16px) !important;
    padding-right: var(--space-4, 16px) !important;
    margin-left: auto !important;
    margin-right: auto !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .section-drafting {
    padding-top: var(--space-12, 48px) !important;
    padding-bottom: var(--space-12, 48px) !important;
  }

  .section-carbon {
    padding: var(--space-16, 64px) 0 !important;
  }

  .hero-container {
    padding: var(--space-4, 16px) 0 var(--space-8, 32px) 0 !important;
    gap: var(--space-10, 40px) !important;
  }

  .hero-statement-col h1 {
    font-size: 2.15rem !important;
    line-height: 1.12 !important;
  }

  /* All Architectural Cards Uniform Padding */
  .feature-spec-card,
  .crosslink-card,
  .bridge-card,
  .solution-catalog-card,
  .insight-card-featured,
  .insight-card-standard,
  .tool-directory-card,
  .sorter-stage,
  .doctrine-article-block,
  .dispatch-terminal {
    padding: 20px 18px !important;
    box-sizing: border-box !important;
    width: 100% !important;
  }

  .sorter-slat {
    padding: 16px 18px !important;
    margin: 0 !important;
    width: 100% !important;
  }

  .sorter-footer {
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    gap: var(--space-3, 12px) !important;
  }

  .sorter-btn-calibrate {
    width: 100% !important;
    justify-content: center !important;
    padding: 10px 0 !important;
  }

  .spec-sheet-container {
    margin-left: auto !important;
    margin-right: auto !important;
    width: 100% !important;
  }

  .spec-sheet-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: var(--space-2, 8px) !important;
    padding: var(--space-4, 16px) !important;
  }

  .spec-sheet-body {
    padding: var(--space-6, 24px) var(--space-4, 16px) !important;
  }

  .spec-pmo-grid {
    grid-template-columns: 1fr !important;
    gap: var(--space-6, 24px) !important;
    margin-top: var(--space-6, 24px) !important;
    padding-top: var(--space-6, 24px) !important;
  }

  .spec-sheet-footer {
    flex-direction: column !important;
    align-items: center !important;
    padding: var(--space-4, 16px) !important;
    gap: var(--space-4, 16px) !important;
    text-align: center !important;
  }

  .spec-sheet-actions {
    flex-direction: column !important;
    width: 100% !important;
    gap: var(--space-3, 12px) !important;
  }

  .spec-sheet-actions .btn {
    width: 100% !important;
    justify-content: center !important;
  }

  .doctrine-quote {
    font-size: 1.25rem !important;
  }

  .dispatch-actions {
    flex-direction: column !important;
    width: 100% !important;
    gap: var(--space-3, 12px) !important;
  }

  .dispatch-actions .btn {
    width: 100% !important;
    justify-content: center !important;
  }

  /* Mobile Footer 1-Column Collapse */
  .footer-grid {
    grid-template-columns: 1fr !important;
    gap: var(--space-8, 32px) !important;
  }

  .footer-main-body {
    padding: var(--space-10, 40px) 0 var(--space-8, 32px) 0 !important;
  }
}

/* ==========================================================================
   4. TABLET BREAKPOINTS (431px - 1024px)
   ========================================================================== */

@media (min-width: 431px) and (max-width: 1024px) {
  .nav-track,
  .nav-desktop-status {
    display: none !important;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .hero-container {
    grid-template-columns: 1fr !important;
    gap: var(--space-12, 48px) !important;
  }

  .entropy-header-grid,
  .entropy-comparison-grid,
  .spec-pmo-grid,
  .doctrine-grid {
    grid-template-columns: 1fr !important;
    gap: var(--space-8, 32px) !important;
  }

  .workbench-grid {
    grid-template-columns: 1fr !important;
  }

  /* Tablet Footer 2-Column Grid */
  .footer-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: var(--space-8, 32px) !important;
  }

  .footer-col-brand {
    grid-column: span 2 !important;
    margin-bottom: var(--space-4, 16px);
  }
}