/* ============================================================
   Responsive Breakpoints
   ============================================================ */

/* Large Desktop */
@media (max-width: 1280px) {
  :root { --container-max: 100%; }
  .hero-title { font-size: 44px; }
  .cta-cards { grid-template-columns: repeat(4, 1fr); }
}

/* Tablet (1024px) */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: var(--space-12); }
  .hero-image-wrap { max-width: 560px; }
  .hero-title { font-size: 40px; }
  .hero-subtitle { max-width: 100%; }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .resource-grid { grid-template-columns: repeat(3, 1fr); }
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .cta-cards { grid-template-columns: repeat(2, 1fr); }
  .security-grid { grid-template-columns: 1fr; }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .btn-nav { display: none; }
}

/* Small Tablet / Large Phone (768px) */
@media (max-width: 768px) {
  .section { padding: var(--space-16) 0; }
  .container { padding: 0 var(--space-4); }

  .hero { padding-top: calc(var(--nav-height) + var(--space-12)); }
  .hero-title { font-size: 34px; letter-spacing: -0.8px; }
  .hero-stats { gap: var(--space-6); }
  .hero-stat-value { font-size: 24px; }

  .section-title { font-size: 28px; }

  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .resource-grid { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-cards { grid-template-columns: repeat(2, 1fr); }

  .footer-inner { flex-direction: column; gap: var(--space-4); text-align: center; }

  .hero-image-overlay { display: none; }
}

/* Phone (480px) */
@media (max-width: 480px) {
  .hero-title { font-size: 28px; }
  .hero-stats { flex-wrap: wrap; gap: var(--space-5); }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { justify-content: center; }

  .section-title { font-size: 24px; }

  .grid-4 { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-cards { grid-template-columns: 1fr; }
  .cta-main-actions { flex-direction: column; align-items: center; }

  .platform-card { padding: var(--space-5); }
  .app-card { flex-direction: column; }
}

/* ============================================================
   Architecture Diagram Responsive
   ============================================================ */

/* Tablet: security sidebar collapses below the layers */
@media (max-width: 1024px) {
  .arch-body {
    grid-template-columns: 1fr;
  }
  .arch-sidebar-col {
    border-left: none;
    border-top: 2px solid rgba(255, 106, 0, 0.18);
  }
  .arch-sidebar-col .arch-sidebar + .arch-sidebar {
    border-top: 1px solid rgba(255, 106, 0, 0.15);
  }
  .arch-sidebar {
    border-left: none;
    padding: var(--space-4) var(--space-5);
  }
  .arch-sidebar-label {
    text-align: left;
    border-bottom: 1px solid rgba(255, 106, 0, 0.15);
    margin-bottom: var(--space-3);
  }
  .arch-sidebar-items {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-2);
    justify-content: flex-start;
  }
  .arch-sb-item {
    flex: 0 1 auto;
  }
  .arch-split {
    grid-template-columns: 1fr;
  }
  .arch-split > .arch-layer:first-child {
    border-right: none;
    border-bottom: 1px solid var(--color-border-light);
  }
}

/* Phone: tighter spacing & smaller pills */
@media (max-width: 768px) {
  .arch-section { padding: var(--space-16) 0 var(--space-20); }
  .arch-intro-title { font-size: 28px; }
  .arch-outer { padding: 0 var(--space-3); }
  .arch-layer { padding: var(--space-3) var(--space-4); }
  .arch-p {
    font-size: 11.5px;
    padding: 4px 10px 4px 4px;
  }
  .arch-ic { width: 22px; height: 22px; font-size: 10px; }
  .arch-ll { font-size: 10.5px; letter-spacing: 0.6px; }
  .arch-row { flex-direction: column; align-items: flex-start; gap: var(--space-2); }
  .arch-rl { min-width: auto; }
  .arch-titlebar-text { font-size: 12px; }
}

@media (max-width: 480px) {
  .arch-frame { border-radius: var(--radius-lg); }
  .arch-li { gap: 6px; }
  .arch-p { font-size: 11px; }
}

/* ============================================================
   Persona Scenarios Responsive
   ============================================================ */
@media (max-width: 1200px) {
  .personas-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .persona-card:nth-child(4),
  .persona-card:nth-child(5) {
    /* center the bottom two */
  }
}

@media (max-width: 1024px) {
  .personas { padding: var(--space-16) 0; }
  .personas-title { font-size: 30px; }
  .personas-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
  }
  .persona-card { padding: var(--space-5) var(--space-4); }
  .persona-icon-wrap { width: 48px; height: 48px; border-radius: 14px; }
}

@media (max-width: 768px) {
  .personas { padding: var(--space-12) 0; }
  .personas-header { margin-bottom: var(--space-8); }
  .personas-title { font-size: 24px; }
  .personas-subtitle { font-size: 14px; }
  .personas-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }
  /* Disable float on touch devices to prevent jitter */
  .persona-card {
    animation: none;
  }
  .persona-role { font-size: 13.5px; }
  .persona-scenario { font-size: 12px; }
}

@media (max-width: 480px) {
  .personas-grid {
    grid-template-columns: 1fr;
  }
  .persona-card {
    padding: var(--space-5);
  }
}

/* Mobile Nav overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  padding: var(--space-4);
  z-index: 99;
  box-shadow: var(--shadow-md);
}

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

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav-links a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.mobile-nav-links a:hover {
  color: var(--color-orange);
  background: var(--color-orange-pale);
}

.mobile-nav-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  gap: var(--space-3);
  align-items: center;
}