/* === HTCTheme Responsive Styles === */

/* Large Desktop: 1440px+ */
@media (min-width: 1440px) {
  :root { --container-max: 1360px; }
}

/* Desktop: up to 1280px */
@media (max-width: 1280px) {
  :root { --container-padding: 2rem; }
}

/* Tablet Landscape: 1024px */
@media (max-width: 1024px) {
  :root { --section-padding: 5rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .stats-cards { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stats-bar__item { border-bottom: 1px solid var(--color-border); }
  .stats-bar__item:nth-child(2) { border-right: none; }
  .timeline-h { grid-template-columns: repeat(3, 1fr); }
  .key-highlights { grid-template-columns: repeat(2, 1fr); }
  .ecosystem-flow { grid-template-columns: repeat(2, 1fr); }
  .split-layout { gap: var(--space-10); }
  .site-footer__inner { grid-template-columns: 1.5fr 1fr 1fr; gap: var(--space-8); }
  .cta-dark { grid-template-columns: 1fr; text-align: center; justify-items: center; }
}

/* Tablet Portrait: 768px */
@media (max-width: 768px) {
  :root {
    --section-padding: 4rem;
    --section-padding-sm: 3rem;
    --container-padding: 1.5rem;
  }

  /* Typography scale-down */
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.875rem; }

  /* Layout */
  .grid-2,.grid-3,.grid-4,.grid-5 { grid-template-columns: 1fr; }
  .grid-auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
  .split-layout,.split-layout--wide,.split-layout--narrow { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .stats-cards { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { grid-template-columns: 1fr; }
  .stats-bar__item { border-right: none; border-bottom: 1px solid var(--color-border); }
  .stats-bar__item:last-child { border-bottom: none; }
  .timeline-h { grid-template-columns: 1fr; }
  .timeline-h::before { display: none; }
  .timeline-h-item { padding-top: var(--space-6); display: flex; gap: var(--space-4); text-align: left; align-items: center; }
  .timeline-h-item__dot { position: relative; top: auto; left: auto; transform: none; flex-shrink: 0; }
  .key-highlights { grid-template-columns: 1fr; }
  .ecosystem-flow { grid-template-columns: 1fr; }
  .eco-node:not(:last-child)::after { display: none; }

  /* Header */
  .site-nav { display: none; }
  .site-header__cta { display: none; }
  .hamburger { display: flex; }

  /* Footer */
  .site-footer__inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .site-footer__bottom { flex-direction: column; text-align: center; }

  /* Hero */
  .hero { min-height: auto; padding: var(--space-16) 0 var(--space-12); }
  .hero__image { display: none; }
  .hero--with-image .hero__content { max-width: 100%; }

  /* Cards */
  .card { padding: var(--space-6); }
  .info-box { padding: var(--space-6); }
  .why-partner { padding: var(--space-6); }
  .mvp-box { padding: var(--space-6); }
  .vision-quote { padding: var(--space-8); }
  .cta-dark { padding: var(--space-8) var(--space-6); }
}

/* Mobile: 480px */
@media (max-width: 480px) {
  :root {
    --section-padding: 3rem;
    --container-padding: 1.25rem;
  }
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
  .btn { padding: 0.625rem 1.25rem; font-size: var(--text-sm); }
  .btn--lg { padding: 0.75rem 1.5rem; font-size: var(--text-base); }
  .btn-group { flex-direction: column; }
  .btn-group .btn { justify-content: center; }
  .stats-cards { grid-template-columns: 1fr; }
  .section-header { margin-bottom: var(--space-10); }
  .hero__stats { flex-direction: column; gap: var(--space-4); }
}

/* Print */
@media print {
  .site-header,.site-footer,.mobile-menu,.hamburger { display: none !important; }
  .hero { min-height: auto !important; padding: 2rem 0 !important; }
  * { background: transparent !important; color: black !important; box-shadow: none !important; }
  a { text-decoration: underline; }
}