/* ============================================================
   temple-3d-app.css — Visor 3D del Templo de Salomón (nuevo)
   Adaptado para integrarse en la página del sitio "Página de Fe"
   ============================================================ */
:root {
  --t3d-gold: #d8b56a;
  --t3d-gold-strong: #f0cf85;
  --t3d-gold-dark: #9c7c3f;
  --t3d-paper: #f3e9d2;
  --t3d-ink: #231c10;
  --t3d-panel-bg: rgba(24, 20, 12, 0.82);
  --t3d-panel-border: rgba(216, 181, 106, 0.35);
  --t3d-serif: Georgia, "Times New Roman", serif;
  --t3d-ui: "Space Grotesk", -apple-system, "Segoe UI", Roboto, sans-serif;
}

#app {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #0d0b08;
  font-family: var(--t3d-ui);
}

#canvas-wrap {
  position: absolute;
  inset: 0;
}
#canvas-wrap canvas {
  display: block;
}

/* ---------- Labels 3D ---------- */
.t3d-label {
  font-family: var(--t3d-ui);
  font-size: 12px;
  color: var(--t3d-paper);
  background: rgba(20, 16, 9, 0.72);
  border: 1px solid rgba(216, 181, 106, 0.5);
  border-radius: 999px;
  padding: 2px 10px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  backdrop-filter: blur(3px);
  text-shadow: 0 1px 2px #000;
  pointer-events: none;
  user-select: none;
}
.t3d-label::before {
  content: "";
  position: absolute;
  left: 50%; bottom: -6px;
  width: 1px; height: 6px;
  background: rgba(216, 181, 106, 0.6);
}
.t3d-label.gold {
  background: rgba(120, 88, 30, 0.85);
  border-color: var(--t3d-gold-strong);
  color: #fff6dc;
}

/* ---------- HUD ---------- */
#hud {
  position: absolute;
  top: 76px;
  left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 8px 16px;
  gap: 12px;
  pointer-events: none;
}
#hud .brand {
  display: flex;
  gap: 10px;
  align-items: center;
  background: var(--t3d-panel-bg);
  border: 1px solid var(--t3d-panel-border);
  border-radius: 10px;
  padding: 8px 14px;
  pointer-events: auto;
  backdrop-filter: blur(8px);
}
.brand-mark {
  font-size: 26px;
  filter: drop-shadow(0 0 6px rgba(240, 207, 133, 0.5));
}
#hud .brand h1 {
  font-family: var(--t3d-serif);
  font-size: 16px;
  color: var(--t3d-gold-strong);
  letter-spacing: 0.08em;
}
#hud .brand p {
  font-size: 10.5px;
  color: #b9a77e;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.hud-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  pointer-events: auto;
}
.hud-actions button,
#hud .tgl {
  background: var(--t3d-panel-bg);
  color: var(--t3d-paper);
  border: 1px solid var(--t3d-panel-border);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 12.5px;
  font-family: var(--t3d-ui);
  cursor: pointer;
  transition: all 0.15s;
  backdrop-filter: blur(8px);
  user-select: none;
}
.hud-actions button:hover {
  border-color: var(--t3d-gold);
  color: var(--t3d-gold-strong);
}
.hud-actions button.active {
  background: var(--t3d-gold-dark);
  color: #1a1408;
  border-color: var(--t3d-gold-strong);
}
.hud-actions .tgl {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}
.hud-actions .tgl input {
  accent-color: var(--t3d-gold);
}

/* ---------- Panel lateral ---------- */
#panel {
  position: absolute;
  top: 146px;
  left: 16px;
  width: 272px;
  max-height: calc(100vh - 210px);
  display: flex;
  flex-direction: column;
  background: var(--t3d-panel-bg);
  border: 1px solid var(--t3d-panel-border);
  border-radius: 12px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: transform 0.25s ease, opacity 0.25s;
  z-index: 40;
}
#panel.collapsed {
  transform: translateX(calc(-100% - 24px));
  opacity: 0;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid var(--t3d-panel-border);
}
.panel-head h2 {
  font-family: var(--t3d-serif);
  font-size: 14px;
  color: var(--t3d-gold-strong);
  letter-spacing: 0.1em;
}
#btn-panel-close, #btn-info-close, #btn-help {
  background: none;
  border: none;
  color: #b9a77e;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--t3d-ui);
}
#btn-panel-close:hover, #btn-info-close:hover {
  color: #fff;
}
#part-list {
  overflow-y: auto;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
#part-list::-webkit-scrollbar { width: 6px; }
#part-list::-webkit-scrollbar-thumb { background: var(--t3d-gold-dark); border-radius: 3px; }
.cat {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--t3d-gold);
  margin: 10px 2px 4px;
  font-weight: 600;
}
.part-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  text-align: left;
  color: var(--t3d-paper);
  font-size: 13px;
  font-family: var(--t3d-ui);
  padding: 6px 8px;
  border-radius: 7px;
  cursor: pointer;
  transition: background 0.12s;
}
.part-btn:hover { background: rgba(216, 181, 106, 0.12); }
.part-btn.active {
  background: rgba(216, 181, 106, 0.22);
  color: var(--t3d-gold-strong);
}
.part-btn .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--t3d-gold-dark);
  flex: none;
}
.part-btn.active .dot {
  background: var(--t3d-gold-strong);
  box-shadow: 0 0 8px var(--t3d-gold);
}
.panel-foot {
  padding: 8px 14px;
  border-top: 1px solid var(--t3d-panel-border);
  font-size: 11px;
  color: #8d7f5e;
}

/* ---------- Ficha informativa ---------- */
#info-card {
  position: absolute;
  bottom: 26px;
  right: 26px;
  width: 340px;
  background: var(--t3d-panel-bg);
  border: 1px solid var(--t3d-gold);
  border-radius: 12px;
  padding: 16px 18px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  animation: t3d-card-in 0.3s ease;
  z-index: 40;
}
#info-card.hidden { display: none; }
@keyframes t3d-card-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
#info-card .info-close { position: absolute; top: 8px; right: 10px; }
#info-name {
  font-family: var(--t3d-serif);
  font-size: 19px;
  color: var(--t3d-gold-strong);
  margin-bottom: 2px;
}
.info-hebrew {
  font-size: 13px;
  color: var(--t3d-gold);
  font-style: italic;
  margin-bottom: 2px;
}
.info-ref {
  font-size: 11px;
  color: #8d7f5e;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
#info-desc {
  font-size: 13px;
  line-height: 1.55;
  color: #e8dcc0;
}

/* ---------- Tooltip ---------- */
#tooltip {
  position: absolute;
  padding: 5px 11px;
  border-radius: 7px;
  background: rgba(15, 12, 7, 0.9);
  border: 1px solid var(--t3d-panel-border);
  color: var(--t3d-gold-strong);
  font-size: 12px;
  pointer-events: none;
  transform: translate(-50%, -130%);
  white-space: nowrap;
  z-index: 45;
}
#tooltip.hidden { display: none; }

/* ---------- Ayuda ---------- */
#btn-help {
  position: absolute;
  right: 18px;
  bottom: 22px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--t3d-panel-bg);
  border: 1px solid var(--t3d-panel-border);
  color: var(--t3d-gold);
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  backdrop-filter: blur(8px);
  z-index: 45;
}
#btn-help:hover { border-color: var(--t3d-gold); }
#info-card:not(.hidden) ~ #btn-help {
  opacity: 0;
  pointer-events: none;
}
#help-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 6, 3, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 60;
}
#help-overlay.hidden { display: none; }
.t3d-help-card {
  background: #171208;
  border: 1px solid var(--t3d-gold);
  border-radius: 14px;
  padding: 26px 32px;
  max-width: 460px;
  color: var(--t3d-paper);
  box-shadow: 0 10px 50px rgba(0, 0, 0, 0.6);
}
.t3d-help-card h2 {
  font-family: var(--t3d-serif);
  color: var(--t3d-gold-strong);
  margin-bottom: 14px;
  letter-spacing: 0.08em;
}
.t3d-help-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 13.5px;
  line-height: 1.5;
}
.t3d-help-card li b { color: var(--t3d-gold-strong); }
.t3d-help-card .btn-gold { margin-top: 18px; }

/* ---------- Intro ---------- */
#intro {
  position: absolute;
  inset: 0;
  z-index: 55;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 35%, #2a2113 0%, #0d0b08 70%);
  transition: opacity 0.6s ease;
}
#intro.fade { opacity: 0; pointer-events: none; }
.t3d-intro-card { text-align: center; max-width: 620px; padding: 20px; }
.t3d-intro-kicker {
  font-size: 12px;
  letter-spacing: 0.4em;
  color: var(--t3d-gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.t3d-intro-title {
  font-family: var(--t3d-serif);
  font-size: clamp(34px, 6vw, 58px);
  color: var(--t3d-gold-strong);
  letter-spacing: 0.06em;
  margin-bottom: 14px;
  text-shadow: 0 0 40px rgba(240, 207, 133, 0.35);
}
.t3d-intro-sub {
  font-size: 15px;
  line-height: 1.7;
  color: #d6c8a8;
  margin-bottom: 22px;
}
.t3d-intro-sub strong { color: var(--t3d-gold-strong); }
.t3d-intro-hints {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  justify-content: center;
  font-size: 12.5px;
  color: #a99566;
  margin-bottom: 26px;
}
.t3d-intro-hints span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.t3d-intro-hints svg {
  width: 16px;
  height: 16px;
  color: var(--t3d-gold);
  flex-shrink: 0;
}
.btn-gold {
  font-family: var(--t3d-serif);
  font-size: 15px;
  letter-spacing: 0.14em;
  background: linear-gradient(180deg, #f0cf85, #c29a45);
  color: #221803;
  border: none;
  border-radius: 10px;
  padding: 13px 34px;
  cursor: pointer;
  box-shadow: 0 6px 24px rgba(210, 165, 75, 0.35);
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(210, 165, 75, 0.5);
}

/* ---------- Modo caminata ---------- */
#walk-hint {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--t3d-panel-bg);
  border: 1px solid var(--t3d-gold);
  color: var(--t3d-gold-strong);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 9px 18px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  z-index: 35;
  white-space: nowrap;
}
#walk-hint.hidden { display: none; }

/* ---------- Tarjetas de la sección "Componentes" ---------- */
.parts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.part-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: left;
  background: rgba(13, 59, 94, 0.55);
  border: 1px solid rgba(201, 162, 39, 0.35);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--ivory, #cfe3f0);
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
}
.part-card:hover {
  border-color: var(--gold, #c9a227);
  background: rgba(13, 59, 94, 0.8);
  transform: translateY(-2px);
}
.part-card .pc-name {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--light-gold, #e0c469);
}
.part-card .pc-ref {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(207, 227, 240, 0.6);
}
.part-card p {
  font-size: 12.5px;
  line-height: 1.5;
  color: rgba(207, 227, 240, 0.85);
  margin: 0;
}

@media (max-width: 860px) {
  #panel {
    top: 210px;
    width: 230px;
    max-height: calc(100vh - 270px);
  }
  #hud {
    top: 66px;
    left: 8px;
    right: 8px;
    padding: 6px;
    flex-wrap: wrap;
    row-gap: 8px;
  }
  #hud .brand { padding: 6px 10px; }
  #hud .brand h1 { font-size: 13px; }
  #hud .brand p { display: none; }
  .hud-actions { flex: 1 1 100%; justify-content: flex-start; }
  .hud-actions .tgl { font-size: 11px; padding: 5px 8px; gap: 4px; }
  #info-card {
    right: 10px;
    bottom: 12px;
    width: calc(100vw - 20px);
  }
}

:root {
  --t3d-serif: "Cormorant Garamond", Georgia, serif;
  --t3d-ui: "Alegreya Sans", sans-serif;
  --font-serif: "Cormorant Garamond", Georgia, serif;
  --font-ui: "Alegreya Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --gold: var(--t3d-gold);
  --gold-strong: var(--t3d-gold-strong);
  --gold-dark: var(--t3d-gold-dark);
  --paper: var(--t3d-paper);
}

html {
  min-height: 100%;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body.temple-3d-page {
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
  color: var(--t3d-paper);
  background:
    radial-gradient(circle at 18% 8%, rgba(216, 181, 106, 0.13), transparent 32rem),
    #171208;
  font-family: var(--font-ui);
}

#app,
#canvas-wrap,
#canvas-wrap > div {
  overflow: hidden;
}

.temple-3d-header {
  background: rgba(17, 34, 47, 0.95);
  border-bottom: 1px solid rgba(216, 181, 106, 0.28);
}

.temple-3d-nav,
.temple-3d-nav .logo a,
.temple-3d-nav .nav-links a,
.filter-btn,
.hud-actions button,
#hud .tgl {
  font-family: var(--font-ui);
  text-transform: none;
}

.temple-3d-viewer {
  height: max(760px, 100svh);
  background: #0d0b08;
  scroll-margin-top: 72px;
}

.t3d-intro-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 0.96;
  text-transform: none;
}

.t3d-intro-kicker,
.cat,
.info-ref,
.part-card .pc-ref {
  text-transform: none;
}

.t3d-intro-kicker {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.t3d-intro-sub {
  font-size: 1.02rem;
  line-height: 1.6;
}

.btn-gold {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  letter-spacing: 0.02em;
}

.viewer-status {
  min-height: 1.4em;
  margin-top: 0.85rem;
  color: #9f8b60;
  font-size: 0.82rem;
}

#hud .brand h2 {
  color: var(--t3d-gold-strong);
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0;
}

#hud .brand p {
  letter-spacing: 0.04em;
  text-transform: none;
}

.viewer-next {
  position: absolute;
  z-index: 35;
  bottom: 18px;
  left: 50%;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 1rem;
  border: 1px solid rgba(216, 181, 106, 0.42);
  border-radius: 999px;
  color: var(--t3d-gold-strong);
  background: rgba(24, 20, 12, 0.82);
  font-size: 0.86rem;
  text-decoration: none;
  transform: translateX(-50%);
  backdrop-filter: blur(8px);
}

.viewer-next:hover {
  border-color: var(--t3d-gold-strong);
  background: rgba(45, 35, 18, 0.94);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.section-jump-nav {
  position: relative;
  z-index: 5;
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem;
  border-top: 1px solid rgba(216, 181, 106, 0.28);
  border-bottom: 1px solid rgba(216, 181, 106, 0.2);
  background: #21190d;
}

.section-jump-nav a {
  padding: 0.55rem 0.9rem;
  border: 1px solid rgba(216, 181, 106, 0.28);
  border-radius: 999px;
  color: #e8d7b1;
  font-size: 0.88rem;
  text-decoration: none;
}

.section-jump-nav a:hover {
  border-color: var(--t3d-gold);
  color: var(--t3d-gold-strong);
}

.parts-info-section,
.controls-help-section,
.temple-typology {
  position: relative;
  scroll-margin-top: 72px;
}

.parts-info-section {
  padding: 5.5rem 2rem;
  background: linear-gradient(145deg, #21190d, #302513) !important;
  background-image: none !important;
}

.parts-info-section::before,
.controls-help-section::before {
  display: none;
}

.parts-info-section .container,
.controls-help-section .container,
.temple-typology .container {
  position: relative;
  z-index: 1;
  width: min(1120px, 100%);
  margin: 0 auto;
}

.section-kicker {
  margin: 0 0 0.7rem;
  color: var(--t3d-gold);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-align: center;
}

.parts-info-section .section-title,
.controls-help-section .section-title,
.temple-typology .section-title {
  margin: 0;
  color: var(--t3d-gold-strong);
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1;
  text-align: center;
  text-transform: none;
}

.section-lead {
  max-width: 760px;
  margin: 1rem auto 2.2rem;
  color: rgba(243, 233, 210, 0.76);
  font-size: 1.05rem;
  line-height: 1.7;
  text-align: center;
}

.parts-filter {
  margin-bottom: 2rem;
}

.filter-btn {
  border-radius: 999px;
  font-size: 0.92rem;
}

.filter-btn.active {
  color: #1a1408;
  background: var(--t3d-gold-strong);
}

.part-card {
  min-height: 210px;
  border-radius: 8px;
}

.part-card .pc-name {
  color: var(--t3d-gold-strong);
  font-family: var(--font-serif);
  font-size: 1.28rem;
  font-weight: 600;
  letter-spacing: 0;
}

.part-card .pc-ref {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
}

.part-card p {
  font-size: 0.92rem;
  line-height: 1.62;
}

.temple-typology {
  padding: 6rem 2rem;
  color: #2b2113;
  background:
    linear-gradient(rgba(244, 235, 214, 0.97), rgba(232, 216, 184, 0.97)),
    repeating-linear-gradient(0deg, transparent, transparent 31px, rgba(92, 69, 31, 0.08) 32px);
}

.temple-typology .section-kicker {
  color: #8e682a;
}

.temple-typology .section-title {
  color: #382713;
}

.temple-typology .section-lead {
  color: #62513c;
}

.temple-typology .typology-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

.temple-typology .typology-card {
  min-height: 220px;
  padding: 2rem;
  border: 1px solid rgba(91, 63, 24, 0.22);
  background: rgba(255, 251, 241, 0.76);
  box-shadow: 0 16px 40px rgba(79, 52, 20, 0.08);
}

.typology-number {
  display: inline-block;
  margin-bottom: 1rem;
  color: #a2742e;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.temple-typology .typology-card h3,
.temple-typology .method-note h3 {
  margin: 0 0 0.8rem;
  color: #402b13;
  font-family: var(--font-serif);
  font-size: 1.55rem;
  line-height: 1.15;
}

.temple-typology .typology-card p,
.temple-typology .method-note p {
  margin: 0;
  color: #5f4d37;
  font-size: 1rem;
  line-height: 1.68;
}

.temple-typology .typology-card .typology-ref {
  margin-top: 1.25rem;
  color: #80591f;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.5;
}

.temple-typology .method-note {
  margin-top: 1rem;
  padding: 2rem;
  border-left: 4px solid #a2742e;
  background: rgba(255, 251, 241, 0.76);
}

.study-link {
  display: block;
  width: max-content;
  max-width: 100%;
  margin: 2rem auto 0;
  color: #624318;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-decoration: none;
}

.study-link:hover {
  color: #9a6b26;
}

.controls-help-section {
  padding: 5.5rem 2rem;
  background: linear-gradient(145deg, #141008, #2a2113) !important;
}

.help-item,
.keyboard-shortcuts {
  border: 1px solid rgba(216, 181, 106, 0.2);
  border-radius: 8px;
}

.help-item h3,
.keyboard-shortcuts h3 {
  color: var(--t3d-gold-strong);
  font-family: var(--font-serif);
  letter-spacing: 0;
  text-transform: none;
}

.temple-viewer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem max(1.5rem, calc((100vw - 1120px) / 2));
  border-top: 1px solid rgba(216, 181, 106, 0.24);
  color: #9f8b60;
  background: #0d0b08;
  font-size: 0.86rem;
}

.temple-viewer-footer a {
  color: var(--t3d-gold-strong);
  text-decoration: none;
}

.temple-viewer-footer a:hover {
  text-decoration: underline;
}

#panel.collapsed {
  width: 48px;
  height: 48px;
  min-height: 48px;
  overflow: hidden;
  opacity: 1;
  transform: none;
}

#panel.collapsed .panel-head {
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
}

#panel.collapsed .panel-head h2,
#panel.collapsed #part-list,
#panel.collapsed .panel-foot {
  display: none;
}

#panel.collapsed #btn-panel-close {
  width: 48px;
  height: 48px;
  color: var(--t3d-gold-strong);
  font-size: 1.1rem;
}

:is(a, button, input):focus-visible {
  outline: 3px solid var(--t3d-gold-strong);
  outline-offset: 3px;
}

@media (max-width: 860px) {
  .temple-3d-nav {
    flex-wrap: nowrap;
    gap: 0.6rem;
    padding: 0.65rem 0.8rem;
  }

  .temple-3d-nav .logo a {
    width: 28px;
    overflow: hidden;
    color: transparent;
    font-size: 0;
    white-space: nowrap;
  }

  .temple-3d-nav .logo a::before {
    color: var(--t3d-gold);
    font-size: 1.1rem;
  }

  .temple-3d-nav .nav-links {
    display: flex !important;
    gap: 0.65rem;
    margin-left: auto;
  }

  .temple-3d-nav .nav-links li:first-child {
    display: none;
  }

  .temple-3d-nav .nav-links a {
    font-size: 0.75rem;
  }

  #hud {
    top: 58px;
    left: 8px;
    right: 8px;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    padding: 6px;
  }

  #hud .brand {
    width: max-content;
    padding: 6px 10px;
  }

  #hud .brand h2 {
    font-size: 15px;
  }

  .hud-actions {
    width: 100%;
    min-width: 0;
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    padding: 1px 1px 5px;
    scrollbar-width: none;
  }

  .hud-actions::-webkit-scrollbar {
    display: none;
  }

  .hud-actions button,
  .hud-actions .tgl {
    flex: 0 0 auto;
  }

  #panel {
    top: 176px;
    left: 12px;
    width: min(360px, calc(100vw - 24px));
    max-height: calc(100svh - 204px);
  }

  #info-card {
    right: 10px;
    bottom: 10px;
    width: calc(100vw - 20px);
    max-height: 36svh;
    overflow-y: auto;
  }

  #btn-help {
    right: 12px;
    bottom: 14px;
  }

  .viewer-next {
    bottom: 14px;
    font-size: 0.8rem;
  }

  .section-jump-nav {
    justify-content: flex-start;
    overflow-x: auto;
  }

  .section-jump-nav a {
    flex: 0 0 auto;
  }

  .parts-info-section,
  .controls-help-section,
  .temple-typology {
    padding: 4rem 1.15rem;
  }

  .temple-typology .typology-grid {
    grid-template-columns: 1fr;
  }

  .temple-viewer-footer {
    align-items: flex-start;
    flex-direction: column;
    padding: 2rem 1.25rem;
  }
}

@media (max-width: 520px) {
  #btn-walk,
  .t3d-hint-keyboard {
    display: none;
  }

  .temple-3d-nav .nav-links {
    gap: 0.45rem;
  }

  .temple-3d-nav .nav-links a {
    font-size: 0.7rem;
  }

  .t3d-intro-card {
    padding: 1.2rem;
  }

  .t3d-intro-title {
    font-size: clamp(2.55rem, 14vw, 3.8rem);
    letter-spacing: 0;
  }

  .t3d-intro-kicker {
    font-size: 0.65rem;
  }

  .t3d-intro-hints {
    font-size: 0.76rem;
  }

  .parts-grid {
    grid-template-columns: 1fr;
  }

  .part-card,
  .temple-typology .typology-card,
  .temple-typology .method-note {
    padding: 1.4rem;
  }
}

@media (pointer: coarse) {
  #btn-walk,
  .t3d-hint-keyboard,
  .keyboard-shortcuts {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}