/* ==========================================================
   DECRYPT V4 — RESPONSIVE
   Tuned across 320 / 375 / 414 / 768 / 1024 / 1280 / 1440 / 1920
   ========================================================== */

/* ---------- ≥1280 ---------- */
@media (min-width: 1280px) {
  .scene-wrap { max-width: 1040px; }
}

/* ---------- ≥1440 : more breathing room, larger canvas world ---------- */
@media (min-width: 1440px) {
  .section-inner { max-width: 1480px; }
}

/* ---------- ≤1024 : tablet recomposition ---------- */
@media (max-width: 1024px) {
  .node-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-meta { gap: 26px; }
}

/* ---------- Phone-only hero registration CTA ---------- */
@media (max-width: 480px) {
  .hero-register-mobile { display: inline-flex; margin-top: 22px; }
}

/* ---------- ≤768 ---------- */
@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .scene-wrap {
    order: -1;
    max-width: none;
    aspect-ratio: 21 / 9;
    border-left: none;
    border-right: none;
    margin: 0 calc(var(--edge) * -1);
    width: calc(100% + var(--edge) * 2);
    border-radius: 0;
  }
  .chapter { grid-template-columns: 46px 1fr; row-gap: 10px; }
  .chapter .c-date, .chapter .status-pill { grid-column: 2; justify-self: start; }
  .countdown-grid { gap: 1rem; }
  .footer-top { flex-direction: column; align-items: flex-start; }
}

/* ---------- ≤480 (covers 320 / 375 / 414) ---------- */
@media (max-width: 480px) {
  .section { padding: 70px var(--edge); }
  .node-grid { grid-template-columns: 1fr; }
  .countdown-unit { min-width: 50px; }
  .countdown-number { font-size: clamp(2rem, 9vw, 3rem); }
  .header { padding: 1rem 1.1rem; }
  .hero-meta { flex-direction: column; gap: 16px; }
}

/* ---------- ≤360 ---------- */
@media (max-width: 360px) {
  .countdown-grid { gap: 0.6rem; }
}

/* ---------- Hero banner ---------- */
@media (max-width: 768px) {
  .hero-banner-wrap { max-width: 100%; }
}

/* ---------- Speaker wall (glass cards) ---------- */
@media (max-width: 768px) {
  .speaker-wall { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
}
@media (max-width: 420px) {
  .speaker-wall { grid-template-columns: 1fr 1fr; gap: 12px; }
  .sp-name { font-size: 0.88rem; }
}

/* ---------- Knowledge folders ---------- */
@media (max-width: 768px) {
  .knowledge-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 24px 16px; }
  .folder-3d { width: 96px; height: 76px; }
}
@media (max-width: 420px) {
  .knowledge-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------- PDF modal ---------- */
@media (max-width: 768px) {
  .pdf-modal { height: 92vh; border-radius: 12px 12px 0 0; }
  .pdf-modal-veil { padding: 0; align-items: flex-end; }
}