/* ============================================================
   SmartHomeEra — Interactive 3D Live Demo
   Reuses design tokens from style.css (colors, radii, fonts).
   ============================================================ */

.demo3d-hero{min-height:78svh;display:flex;align-items:center;padding-top:150px;position:relative;overflow:hidden}
.demo3d-hero .hero-grid{position:absolute;inset:0;z-index:-1;opacity:.45;
  background-image:linear-gradient(rgba(72,215,232,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(72,215,232,.08) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,black,transparent 80%);
}
.demo3d-hero h1{font-size:clamp(32px,4.8vw,58px);max-width:18ch}
.demo3d-preview{position:relative;aspect-ratio:1/1;border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--border);background:linear-gradient(155deg,var(--navy-800),var(--navy-950));box-shadow:var(--shadow-glow)}
.demo3d-preview .orbit-ring{position:absolute;inset:8%;border:1px solid var(--border-strong);border-radius:50%;opacity:.5;animation:d3-spin 18s linear infinite}
.demo3d-preview .orbit-ring.r2{inset:20%;animation-duration:26s;animation-direction:reverse}
.demo3d-preview .core-cube{position:absolute;top:50%;left:50%;width:34%;height:34%;transform:translate(-50%,-50%) rotateX(-18deg) rotateY(28deg);transform-style:preserve-3d;animation:d3-bob 4s ease-in-out infinite}
.demo3d-preview .core-cube .face{position:absolute;inset:0;border:1px solid var(--cyber-400);background:rgba(72,215,232,.08)}
.demo3d-preview .core-cube .face.front{transform:translateZ(30px)}
.demo3d-preview .core-cube .face.back{transform:translateZ(-30px) rotateY(180deg)}
.demo3d-preview .core-cube .face.right{transform:rotateY(90deg) translateZ(30px)}
.demo3d-preview .core-cube .face.left{transform:rotateY(-90deg) translateZ(30px)}
.demo3d-preview .core-cube .face.top{transform:rotateX(90deg) translateZ(30px)}
.demo3d-preview .core-cube .face.bottom{transform:rotateX(-90deg) translateZ(30px)}
@keyframes d3-spin{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes d3-bob{0%,100%{transform:translate(-50%,-50%) rotateX(-18deg) rotateY(28deg) translateY(0)}50%{transform:translate(-50%,-50%) rotateX(-18deg) rotateY(28deg) translateY(-10px)}}
.demo3d-preview .caption{position:absolute;left:16px;bottom:16px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--cyber-300)}

/* ---------- 3D stage ---------- */
.stage-wrap{
  position:relative;width:100%;aspect-ratio:16/9;border-radius:var(--radius-xl);overflow:hidden;
  border:1px solid var(--border);background:radial-gradient(ellipse at 50% 30%,#0d1d33,#050b16 75%);
  touch-action:none;
}
#stage-canvas{width:100%;height:100%;display:block;outline:none}
.stage-wrap:focus-visible{box-shadow:0 0 0 3px var(--cyber-400)}

.stage-hud{position:absolute;inset:0;pointer-events:none;z-index:5}
.stage-hud > *{pointer-events:auto}

.stage-tip{position:absolute;top:14px;left:14px;max-width:280px;padding:10px 14px;border-radius:12px;
  background:rgba(5,11,22,.7);backdrop-filter:blur(8px);border:1px solid var(--border);
  font-size:12px;color:var(--text-muted);display:flex;align-items:flex-start;gap:8px}
.stage-tip button{flex-shrink:0;color:var(--cyber-300);font-weight:600;font-size:11px}

.view-modes{position:absolute;top:14px;right:14px;display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end;max-width:60%}
.view-mode-btn{
  padding:8px 13px;border-radius:999px;background:rgba(5,11,22,.65);backdrop-filter:blur(8px);
  border:1px solid var(--border);color:var(--text-muted);font-size:12px;font-weight:600;transition:.2s;
}
.view-mode-btn.active,.view-mode-btn:hover{border-color:var(--border-strong);color:var(--text);background:rgba(46,155,240,.18)}

.stage-controls{position:absolute;bottom:14px;right:14px;display:flex;gap:8px}
.stage-btn{
  width:36px;height:36px;border-radius:50%;background:rgba(5,11,22,.65);backdrop-filter:blur(8px);
  border:1px solid var(--border);color:var(--text);display:flex;align-items:center;justify-content:center;
  font-size:15px;transition:.2s;
}
.stage-btn:hover{background:rgba(46,155,240,.22);border-color:var(--border-strong)}
.stage-btn svg{width:16px;height:16px}

.daynight-toggle{position:absolute;bottom:14px;left:14px;display:flex;background:rgba(5,11,22,.65);backdrop-filter:blur(8px);border:1px solid var(--border);border-radius:999px;padding:4px;gap:2px}
.daynight-toggle button{padding:7px 14px;border-radius:999px;font-size:11.5px;font-weight:600;color:var(--text-dim)}
.daynight-toggle button.active{background:var(--cyber-500);color:#031018}

.loading-overlay{position:absolute;inset:0;z-index:20;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:var(--navy-950);transition:opacity .5s ease}
.loading-overlay.hidden{opacity:0;pointer-events:none}
.loading-overlay .spinner{width:46px;height:46px;border-radius:50%;border:2px solid rgba(72,215,232,.2);border-top-color:var(--cyber-400);animation:d3-rot 1s linear infinite}
@keyframes d3-rot{to{transform:rotate(360deg)}}
.loading-overlay .pct{font-family:var(--font-mono);font-size:13px;color:var(--cyber-300)}
.loading-overlay .msg{font-size:12.5px;color:var(--text-dim)}

.webgl-fallback{display:none;padding:40px;text-align:center}
.webgl-fallback.show{display:block}
.webgl-fallback h3{font-size:18px;margin-bottom:10px}
.webgl-fallback p{color:var(--text-muted);font-size:13.5px;max-width:44ch;margin:0 auto 18px}

/* hotspots (projected 3D -> 2D) */
.hotspot3d{
  position:absolute;width:30px;height:30px;margin:-15px 0 0 -15px;border-radius:50%;
  background:rgba(5,11,22,.65);border:1.5px solid var(--cyber-300);color:var(--cyber-300);
  display:flex;align-items:center;justify-content:center;cursor:pointer;transition:opacity .2s,transform .2s;z-index:6;
}
.hotspot3d:hover{transform:scale(1.15);background:rgba(46,155,240,.3)}
.hotspot3d svg{width:14px;height:14px}
.hotspot3d.off{opacity:.35;filter:grayscale(1)}
.hotspot3d.hidden{display:none}

/* room nav strip */
.room-nav-strip{display:grid;grid-template-columns:repeat(7,1fr);gap:10px;margin-top:20px}
@media(max-width:1100px){.room-nav-strip{grid-template-columns:repeat(4,1fr)}}
@media(max-width:640px){.room-nav-strip{grid-template-columns:repeat(2,1fr)}}
.room-nav-card{
  padding:14px 12px;border-radius:14px;text-align:left;transition:.25s;position:relative;
  background:var(--surface);border:1px solid var(--border);
}
.room-nav-card:hover{border-color:var(--border-strong)}
.room-nav-card.active{border-color:var(--cyber-400);background:rgba(46,155,240,.1)}
.room-nav-card .icn{width:30px;height:30px;border-radius:9px;background:rgba(72,215,232,.12);display:flex;align-items:center;justify-content:center;color:var(--cyber-300);margin-bottom:8px}
.room-nav-card .icn svg{width:15px;height:15px}
.room-nav-card b{display:block;font-size:12.5px;margin-bottom:2px}
.room-nav-card span{display:block;font-size:10.5px;color:var(--text-dim)}
.room-nav-card .status-dot{position:absolute;top:12px;right:12px;width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 6px var(--success)}

/* device / info panel (glass) */
.control-panel{margin-top:20px;padding:22px}
.control-panel h3{font-size:16px;margin-bottom:4px}
.control-panel .sub{font-size:12.5px;color:var(--text-dim);margin-bottom:16px}
.ctrl-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--border)}
.ctrl-row:last-child{border-bottom:none}
.ctrl-row .label{display:flex;flex-direction:column;gap:2px}
.ctrl-row .label b{font-size:13px}
.ctrl-row .label .state-text{font-size:11px;font-family:var(--font-mono);color:var(--text-dim)}
.ctrl-row .state-text.is-on{color:var(--success)}
.ctrl-row .state-text.is-armed{color:var(--gold-300)}
.ctrl-row .state-text.is-alert{color:var(--danger)}
.ctrl-slider{width:120px;accent-color:var(--cyber-400)}

/* hotspot info popover */
.hotspot-panel{
  position:absolute;z-index:30;width:260px;padding:18px;border-radius:16px;
  background:var(--surface-solid);border:1px solid var(--border-strong);box-shadow:0 20px 50px -14px rgba(0,0,0,.6);
  opacity:0;transform:translateY(6px);pointer-events:none;transition:.2s;
}
.hotspot-panel.open{opacity:1;transform:translateY(0);pointer-events:auto}
.hotspot-panel h4{font-size:14.5px;margin-bottom:4px}
.hotspot-panel p{font-size:12px;color:var(--text-muted);margin-bottom:10px}
.hotspot-panel .state-text{font-family:var(--font-mono);font-size:11px;margin-bottom:10px;display:block}
.hotspot-panel .close-x{position:absolute;top:10px;right:10px;color:var(--text-dim)}

/* scenes */
.scenes-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}
@media(max-width:900px){.scenes-grid{grid-template-columns:repeat(2,1fr)}}
.scene-btn{padding:16px 14px;text-align:left;border-radius:14px;background:var(--surface);border:1px solid var(--border);transition:.25s}
.scene-btn:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.scene-btn.running{border-color:var(--cyber-400);background:rgba(46,155,240,.12)}
.scene-btn b{display:block;font-size:13.5px;margin-bottom:4px}
.scene-btn span{font-size:11.5px;color:var(--text-dim)}
.scene-status{margin-top:14px;font-family:var(--font-mono);font-size:12px;color:var(--cyber-300);min-height:18px}

/* voice assistant */
.voice-box{display:flex;flex-direction:column;align-items:center;gap:16px;padding:34px}
.voice-orb{width:64px;height:64px;border-radius:50%;background:radial-gradient(circle at 40% 35%,var(--cyber-400),var(--cyber-500) 70%);display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 6px rgba(72,215,232,.12)}
.voice-orb.listening{animation:d3-pulse 1s ease-in-out infinite}
@keyframes d3-pulse{0%,100%{box-shadow:0 0 0 6px rgba(72,215,232,.12)}50%{box-shadow:0 0 0 14px rgba(72,215,232,.05)}}
.voice-orb svg{width:26px;height:26px;color:#031018}
.voice-samples{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.voice-chip{padding:9px 16px;border-radius:999px;border:1px solid var(--border);font-size:12.5px;color:var(--text-muted);transition:.2s}
.voice-chip:hover{border-color:var(--border-strong);color:var(--text)}
.voice-transcript{width:100%;max-width:480px;min-height:70px;padding:14px 16px;border-radius:12px;background:rgba(139,166,201,.06);border:1px solid var(--border);font-size:13px}
.voice-transcript .line{margin-bottom:6px}
.voice-transcript .who{font-family:var(--font-mono);font-size:10.5px;color:var(--cyber-300);text-transform:uppercase;margin-right:6px}

/* dashboard */
.dash-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:20px}
@media(max-width:900px){.dash-grid{grid-template-columns:repeat(2,1fr)}}
.dash-card{padding:18px;text-align:center}
.dash-card b{display:block;font-family:var(--font-display);font-size:24px;color:var(--cyber-300)}
.dash-card span{font-size:11px;color:var(--text-dim);font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.04em}

/* before / after */
.ba-toggle{display:flex;justify-content:center;margin:24px 0}
.ba-cols{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border)}
@media(max-width:700px){.ba-cols{grid-template-columns:1fr}}
.ba-col{padding:26px}
.ba-col.traditional{background:rgba(139,166,201,.04)}
.ba-col.smart{background:rgba(46,155,240,.08)}
.ba-col h4{font-size:15px;margin-bottom:12px}
.ba-col ul{display:flex;flex-direction:column;gap:9px}
.ba-col li{font-size:13px;color:var(--text-muted);display:flex;gap:8px}
.ba-col.traditional li::before{content:"−";color:var(--text-dim)}
.ba-col.smart li::before{content:"✓";color:var(--success)}

/* accessible fallback list */
.a11y-fallback{margin-top:24px}
.a11y-fallback summary{cursor:pointer;font-size:13px;color:var(--cyber-300);font-weight:600}
.a11y-fallback ul{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.a11y-fallback li{font-size:13px;color:var(--text-muted);padding:10px 0;border-bottom:1px solid var(--border)}

@media (prefers-reduced-motion: reduce){
  .demo3d-preview .orbit-ring,.demo3d-preview .core-cube,.voice-orb.listening{animation:none !important}
}