/* ============================================================
   shared.css — AVCEARCH Brand Production Styling
   ============================================================ */
:root {
  /* ── AVCEARCH Master Color Palette ── */
  --brand-crimson: #b91c1c;
  --brand-crimson-dark: #7f1d1d;
  --onyx-deep: #0f172a;
  --onyx-surface: #1e293b;
  
  /* ── UI Element Overrides ── */
  --cloud-bg: rgba(255, 255, 255, 0.65);
  --cloud-border: rgba(226, 232, 240, 0.8);
  --cloud-glow: 0 8px 32px 0 rgba(127, 29, 29, 0.04);
  --sky-primary: var(--brand-crimson);
  --sky-grad: linear-gradient(135deg, #b91c1c 0%, #7f1d1d 100%);
  --text-dark: #0f172a;
  --text-muted: #64748b;
  
  /* ── Brand Shadows ── */
  --premium-glow: 0 10px 30px rgba(185, 28, 28, 0.15);
}

* { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; 
}

body { 
  background: #f8fafc; 
  color: var(--text-dark); 
  min-height: 100vh; 
  overflow-x: hidden; 
}

/* ── Premium Asymmetric Gradient Background Mesh ── */
.bg-mesh {
  position: fixed; 
  top: 0; 
  left: 0; 
  width: 100vw; 
  height: 100vh; 
  z-index: -2;
  background-image: 
    radial-gradient(at 0% 0%, rgba(185, 28, 28, 0.07) 0, transparent 50%),
    radial-gradient(at 100% 0%, rgba(15, 23, 42, 0.06) 0, transparent 50%);
}

/* ── Elite Navigation Bar ── */
.navbar {
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  padding: 16px 40px;
  background: rgba(255, 255, 255, 0.8); 
  backdrop-filter: blur(16px); 
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(185, 28, 28, 0.1); 
  position: sticky; 
  top: 0; 
  z-index: 100;
}

.nav-logo { 
  display: flex; 
  align-items: center; 
  gap: 8px; 
  text-decoration: none; 
  color: var(--text-dark); 
  font-weight: 900; 
  font-size: 1.35rem; 
  letter-spacing: -0.03em;
}

.nav-logo span span { 
  color: var(--brand-crimson); 
}

.nav-search { 
  display: flex; 
  align-items: center; 
  background: #ffffff; 
  padding: 8px 16px; 
  border-radius: 99px; 
  border: 1px solid #cbd5e1; 
  width: 320px; 
  transition: all 0.2s ease;
}

.nav-search:focus-within {
  border-color: var(--brand-crimson);
  box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.1);
}

.nav-search input { 
  border: none; 
  background: transparent; 
  outline: none; 
  margin-left: 8px; 
  width: 100%; 
  font-size: 0.9rem; 
  color: var(--text-dark);
}

.nav-links { 
  display: flex; 
  gap: 24px; 
}

.nav-link { 
  display: flex; 
  align-items: center; 
  gap: 6px; 
  text-decoration: none; 
  color: var(--text-muted); 
  font-size: 0.95rem; 
  font-weight: 600; 
  transition: color 0.2s; 
}

.nav-link:hover, .nav-link.active { 
  color: var(--brand-crimson); 
}

.nav-upload-btn { 
  display: flex; 
  align-items: center; 
  gap: 6px; 
  background: var(--sky-grad); 
  color: white; 
  text-decoration: none; 
  padding: 10px 20px; 
  border-radius: 12px; 
  font-weight: 700; 
  font-size: 0.9rem; 
  box-shadow: 0 4px 12px rgba(185, 28, 28, 0.2); 
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-upload-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(185, 28, 28, 0.3);
}

.nav-menu-btn { 
  display: none; 
  background: none; 
  border: none; 
  cursor: pointer; 
}

/* ── Content Grid Display Architectures ── */
.page-wrapper { 
  max-width: 1240px; 
  margin: 40px auto; 
  padding: 0 24px; 
}

.research-grid { 
  display: grid; 
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); 
  gap: 28px; 
  margin-top: 24px; 
}

.research-card { 
  background: #ffffff; 
  border: 1px solid var(--cloud-border); 
  border-radius: 20px; 
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.02); 
  overflow: hidden; 
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease; 
}

.research-card:hover { 
  transform: translateY(-6px); 
  box-shadow: 0 20px 40px rgba(185, 28, 28, 0.06), 0 1px 3px rgba(15, 23, 42, 0.05); 
  border-color: rgba(185, 28, 28, 0.15);
}

/* ── Structural Actions Components (Buttons & Badges) ── */
.btn { 
  padding: 12px 24px; 
  font-weight: 700; 
  border-radius: 12px; 
  border: none; 
  cursor: pointer; 
  display: inline-flex; 
  align-items: center; 
  gap: 8px; 
  text-decoration: none; 
  font-size: 0.95rem; 
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1); 
}

.btn-primary { 
  background: var(--sky-grad); 
  color: white !important; 
  box-shadow: var(--premium-glow); 
}

.btn-primary:hover { 
  transform: translateY(-2px); 
  box-shadow: 0 12px 35px rgba(185, 28, 28, 0.3); 
}

.btn-secondary { 
  background: #ffffff; 
  color: var(--text-dark); 
  border: 1px solid #e2e8f0; 
}

.btn-secondary:hover { 
  background: #f8fafc; 
  border-color: #cbd5e1;
  color: var(--brand-crimson);
}

.badge { 
  display: inline-block; 
  padding: 6px 10px; 
  font-size: 0.75rem; 
  font-weight: 700; 
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: 6px; 
  width: max-content; 
}

/* ── Interactive Form Interfaces & Glass Overlay Portals ── */
.upload-overlay { 
  position: fixed; 
  top: 0; 
  left: 0; 
  width: 100vw; 
  height: 100vh; 
  background: rgba(15, 23, 42, 0.6); 
  backdrop-filter: blur(16px); 
  -webkit-backdrop-filter: blur(16px); 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  z-index: 9999; 
}

.upload-progress-card { 
  background: #ffffff; 
  border-radius: 24px; 
  padding: 36px; 
  width: 100%; 
  max-width: 420px; 
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2); 
  border: 1px solid rgba(255, 255, 255, 0.7); 
}

.form-label { 
  display: block; 
  font-weight: 700; 
  font-size: 0.85rem; 
  color: var(--text-dark); 
  margin-bottom: 6px; 
}

.form-input, .form-select, .form-textarea { 
  width: 100%; 
  padding: 12px 14px; 
  background: #ffffff; 
  border: 1px solid #cbd5e1; 
  border-radius: 12px; 
  font-size: 0.95rem; 
  color: var(--text-dark); 
  outline: none; 
  transition: all 0.2s; 
}

.form-input:focus, .form-select:focus, .form-textarea:focus { 
  border-color: var(--brand-crimson); 
  box-shadow: 0 0 0 4px rgba(185, 28, 28, 0.1); 
}

.upload-submit-btn { 
  width: 100%; 
  margin-top: 24px; 
  padding: 14px; 
  background: var(--sky-grad); 
  color: white; 
  border: none; 
  border-radius: 12px; 
  font-size: 1rem; 
  font-weight: 700; 
  cursor: pointer; 
  box-shadow: var(--premium-glow); 
  transition: all 0.2s;
}

.upload-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(185, 28, 28, 0.3);
}

/* ── Live Microfeedback Engine (Toasts) ── */
#toast-container { 
  position: fixed; 
  bottom: 24px; 
  right: 24px; 
  z-index: 10000; 
  display: flex; 
  flex-direction: column; 
  gap: 10px; 
}

.toast { 
  background: var(--onyx-deep); 
  color: white; 
  padding: 14px 24px; 
  border-radius: 12px; 
  font-size: 0.9rem; 
  font-weight: 600; 
  box-shadow: 0 15px 35px rgba(0,0,0,0.2); 
  border-left: 4px solid var(--brand-crimson);
  animation: slideIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards; 
}

@keyframes slideIn { 
  from { transform: translateY(20px); opacity: 0; } 
  to { transform: translateY(0); opacity: 1; } 
}

/* ── Responsive Viewport Scaling Rules ── */
@media (max-width: 768px) {
  .nav-links, .nav-search { display: none; }
  .nav-menu-btn { display: block; }
  .navbar { padding: 16px 24px; }
}
/* ============================================================
   AVCEARCH Ultra-Responsive Architecture Upgrades
   ============================================================ */

/* 1. Global Viewport Safety Rails */
img, svg, video {
  max-width: 100%;
  height: auto;
}

/* 2. Enhanced Tablet & Laptop Scale Rules (max-width: 1024px) */
@media (max-width: 1024px) {
  .navbar {
    padding: 16px 24px;
  }
  .nav-search {
    width: 240px; /* Slims down search box so nav elements don't collide */
  }
  .nav-links {
    gap: 16px;
  }
  .hero-title {
    font-size: 2.8rem; /* Keeps long titles from breaking awkwardly */
  }
}

/* 3. Aggressive Mobile Deep-Cleaning (max-width: 768px) */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 40px 0 32px 0;
  }
  
  .hero-content {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
    flex-direction: column; /* Stacks CTAs safely so text never overflows button bounds */
    width: 100%;
    gap: 12px;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* Structural Strip Collapse */
  .stats-inner {
    flex-direction: column;
    gap: 24px;
  }

  .stat-item {
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 16px;
  }

  .stat-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  /* Grid optimization for single-column mobile views */
  .research-grid {
    grid-template-columns: 1fr; 
    gap: 16px;
  }
  
  /* Hides profile layout elements gracefully in tiny navbar views */
  #navUploadBtn, #navProfileAvatar {
    display: none !important;
  }
}

/* 4. Large Monitor Ultra-Wide Support (min-width: 1440px) */
@media (min-width: 1440px) {
  .page-wrapper {
    max-width: 1400px; /* Dynamically expands workspace canvas for premium spatial symmetry */
  }
  .research-grid {
    grid-template-columns: repeat(4, 1fr); /* Snaps cards into perfect quad-view layout */
  }
}