*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#020814;color:#fff;font-family:Inter,system-ui,Segoe UI,sans-serif}
#app{width:100%;height:100%}canvas{position:fixed;inset:0;width:100%;height:100%;display:block}
.hud{position:fixed;inset:0;pointer-events:none;display:flex;flex-direction:column;justify-content:space-between;padding:16px;z-index:10}
.row{display:flex;justify-content:space-between;align-items:center;gap:12px}.card,.controls{pointer-events:auto;background:rgba(3,13,28,.84);border:1px solid rgba(124,184,255,.28);backdrop-filter:blur(14px);border-radius:16px;padding:12px 14px;box-shadow:0 12px 42px rgba(0,0,0,.3)}
.card{max-width:min(650px,74vw)}.card h1{margin:0;font-size:clamp(17px,2vw,24px)}.card h2{margin:0 0 5px;color:#9cc8ff;font-size:12px;letter-spacing:.12em;text-transform:uppercase}.card p{margin:5px 0 0;color:#d2dfed;font-size:13px;line-height:1.45}
.controls{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.btn{border:1px solid rgba(124,184,255,.35);background:#0b2442;color:#fff;border-radius:999px;padding:10px 14px;cursor:pointer}.btn.primary{background:#b9271d;border-color:#ef5b4b}.btn:disabled{opacity:.4}
.progress{height:5px;background:rgba(255,255,255,.12);border-radius:999px;margin-top:10px;overflow:hidden}.progress>div{height:100%;background:#ef493b}
.menu{position:fixed;left:16px;top:92px;z-index:20;width:min(340px,90vw);max-height:70vh;overflow:auto;background:rgba(3,13,28,.96);border:1px solid rgba(124,184,255,.28);border-radius:16px;padding:8px;display:none}.menu.open{display:block}.menu button{display:block;width:100%;text-align:left;padding:10px;border:0;background:transparent;color:#fff;border-radius:10px;cursor:pointer}.menu button:hover,.menu button.active{background:#102b4d}
.modal{position:fixed;inset:0;z-index:30;display:none;place-items:center;background:rgba(1,6,14,.66);padding:18px}.modal.open{display:grid}.panel{width:min(950px,96vw);height:min(680px,88vh);background:#061426;border:1px solid rgba(124,184,255,.34);border-radius:24px;overflow:hidden;display:grid;grid-template-columns:210px 1fr;box-shadow:0 30px 100px rgba(0,0,0,.6)}.side{background:#071d35;padding:16px}.side h3{margin:0 0 12px}.side button{width:100%;margin:4px 0;padding:10px;border:0;border-radius:10px;background:#0b294b;color:#fff;text-align:left;cursor:pointer}.side button.active{background:#b9271d}.content{padding:24px;overflow:auto}.content h2{margin-top:0}.close{float:right}.demo{font-size:12px;color:#91a8c1;margin-top:28px}
.start{position:fixed;inset:0;z-index:50;background:radial-gradient(circle at 50% 20%,#0e3157 0,#06162a 40%,#020814 75%);display:grid;place-items:center;padding:24px}.start.hidden{display:none}.hero{width:min(960px,100%);background:rgba(5,18,36,.84);border:1px solid rgba(120,184,255,.26);border-radius:28px;padding:clamp(26px,5vw,56px);box-shadow:0 32px 100px rgba(0,0,0,.45)}.hero small{color:#8fc4ff;letter-spacing:.16em;text-transform:uppercase;font-weight:800}.hero h1{font-size:clamp(36px,6vw,72px);line-height:.98;margin:14px 0 18px}.hero p{font-size:clamp(16px,2vw,21px);line-height:1.55;color:#c8d8eb;max-width:800px}.hero .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
#vrButton{position:static!important}
@media(max-width:720px){.hud{padding:10px}.card{max-width:92vw}.row{align-items:flex-start}.panel{grid-template-columns:1fr;height:90vh}.side{display:flex;overflow:auto;gap:6px}.side h3{display:none}.side button{white-space:nowrap;width:auto}.controls{max-width:56vw}.btn{font-size:12px;padding:9px 11px}}

.videoOverlay{position:fixed;inset:0;z-index:60;background:#020814;display:none;place-items:center;padding:16px}.videoOverlay.open{display:grid}
.videoShell{width:min(1100px,100%);background:#061426;border:1px solid rgba(124,184,255,.3);border-radius:20px;overflow:hidden}
.videoShell video{display:block;width:100%;max-height:78vh;background:#000}.videoBar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px}
.saharahPanel{width:min(920px,96vw);max-height:90vh;overflow:auto;background:#061426;border:1px solid rgba(124,184,255,.34);border-radius:22px;padding:18px;color:#fff}
.saharahHeader{display:flex;align-items:center;justify-content:space-between;gap:12px}.saharahHeader h2{margin:3px 0}.saharahHeader small{color:#8fc4ff;letter-spacing:.12em}
.statusRow{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:10px 0 14px;color:#9fb2c7;font-size:13px}.statusBadge{border:1px solid #7d3540;border-radius:999px;padding:5px 9px;background:#35131a}.statusBadge.ok{border-color:#397a61;background:#0f3027;color:#bff4dd}
.chatLog{height:280px;overflow:auto;background:#020b17;border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:12px}.bubble{margin:8px 0;padding:10px 12px;border-radius:12px;max-width:88%}.bubble p{white-space:pre-wrap;margin:4px 0 0;line-height:1.5}.bubble.user{margin-left:auto;background:#173c62}.bubble.assistant{background:#0d263f}.bubble strong{font-size:12px;color:#9bc8fb}
.quickGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:12px 0}.quickGrid button{background:#0b294b;border:1px solid rgba(124,184,255,.25);color:#fff;border-radius:10px;padding:10px;cursor:pointer}
.inputLabel{display:block;color:#bcd0e5;font-size:13px}.inputLabel textarea{display:block;width:100%;margin-top:6px;background:#020b17;color:#fff;border:1px solid rgba(124,184,255,.28);border-radius:12px;padding:12px;font:inherit;resize:vertical}
.sendRow{display:flex;justify-content:flex-end;gap:8px;margin-top:10px}
@media(max-width:700px){.quickGrid{grid-template-columns:repeat(2,1fr)}.chatLog{height:240px}.videoBar{align-items:flex-start;flex-direction:column}}

/* V14: higher contrast Saharah panels */
.saharahPanel{background:#02070d!important;color:#fff!important;border-color:rgba(191,227,255,.55)!important}
.saharahHeader h2,.saharahHeader small,.statusRow,.inputLabel,.bubble,.bubble p,.bubble strong{color:#fff!important}
.bubble.assistant{background:#10263b!important;border:1px solid rgba(191,227,255,.28)}
.bubble.user{background:#194a78!important;border:1px solid rgba(255,255,255,.22)}
.chatLog{background:#00050a!important;border-color:rgba(255,255,255,.24)!important}
.inputLabel textarea{background:#00050a!important;color:#fff!important;border-color:rgba(191,227,255,.45)!important}
.quickGrid button{background:#123a60!important;color:#fff!important;border-color:rgba(191,227,255,.45)!important;font-weight:700}

/* V16: pure white text on black Saharah panels */
.saharahPanel{
  background:#000000 !important;
  color:#ffffff !important;
}
.saharahPanel *,
.saharahHeader *,
.statusRow,
.statusRow *,
.chatLog,
.chatLog *,
.bubble,
.bubble *,
.inputLabel,
.inputLabel *,
.quickGrid button,
.sendRow button{
  color:#ffffff !important;
}
.chatLog,
.inputLabel textarea{
  background:#000000 !important;
  color:#ffffff !important;
}

/* V17: absolute white-on-black readability */
.card,
.saharahPanel,
.chatLog,
.inputLabel textarea{
  background:#000000 !important;
  color:#ffffff !important;
}
.card *,
.saharahPanel *,
.chatLog *,
.inputLabel *,
.inputLabel textarea,
.statusRow,
.statusRow *,
.bubble,
.bubble *,
.demo{
  color:#ffffff !important;
}
.card h1,
.card h2,
.card p,
.saharahHeader h2,
.saharahHeader small{
  color:#ffffff !important;
}

/* V20 navigation links */
#stage2Link{font-weight:800}
#homeLink{font-weight:700}
@media(max-width:700px){
  .controls{flex-wrap:wrap}
  #stage2Link,#homeLink{flex:1 1 46%}
}

/* Stage 3 contextual application panels */
.toolPanel{width:min(900px,96vw);max-height:88vh;overflow:auto;background:#050b12;border:1px solid rgba(191,227,255,.42);border-radius:22px;padding:22px;color:#fff;box-shadow:0 30px 100px rgba(0,0,0,.6)}
.toolHeader{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.toolHeader h2{font-size:clamp(25px,4vw,42px);margin:4px 0 0}.toolHeader small{color:#a9d2ff;letter-spacing:.12em;font-weight:800}.toolSummary{color:#d7e5f4;line-height:1.6;font-size:16px;max-width:800px}.toolItems{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:18px 0}.toolItem{background:#0b2036;border:1px solid rgba(191,227,255,.22);border-radius:14px;padding:14px;line-height:1.45}.toolFooter{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#aebfd0;font-size:13px;border-top:1px solid rgba(255,255,255,.12);padding-top:16px}.toolFooter a{text-decoration:none}.btn[hidden]{display:none!important}@media(max-width:700px){.toolItems{grid-template-columns:1fr}}

/* Stage 5 v10 failsafe panorama layer */
#fallbackPanorama{position:fixed;inset:0;z-index:0;background-position:center;background-size:cover;background-repeat:no-repeat;transform:scaleX(-1);transform-origin:center;pointer-events:none}
#scene{z-index:1;background:transparent!important}
.start{background:rgba(2,8,20,.58)!important;backdrop-filter:blur(2px)}
.start .hero{background:rgba(5,18,36,.88)}