/* ================= DASAR ================= */
:root{
  --deep:#0e2a3a; --deep-2:#123b52; --panel:#0f2f42;
  --magma:#e4572e; --magma-2:#f2842c; --sun:#f7c948;
  --paper:#f4efe6; --card:#ffffff; --ink:#22303a; --muted:#5f707c;
  --line:#e5ded2; --good:#2e9e6b; --bad:#d64545;
  --sidebar-w:240px;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;overflow:hidden}   /* <- TIDAK BISA SCROLL HALAMAN */
body{font-family:'Plus Jakarta Sans',sans-serif;background:var(--paper);color:var(--ink);line-height:1.6}
h1,h2,h3,h4{font-family:'Bricolage Grotesque','Plus Jakarta Sans',sans-serif;line-height:1.25}
img{max-width:100%}
button{font-family:inherit}

/* ================= APP SHELL ================= */
#app{display:flex;height:100vh;height:100dvh;flex-direction:row} /* sidebar di KIRI */

/* ===== SIDEBAR KIRI ===== */
aside{width:var(--sidebar-w);flex:none;background:var(--deep);color:#fff;display:flex;flex-direction:column;border-right:1px solid rgba(255,255,255,.08)}
.aside-brand{display:flex;align-items:center;gap:12px;padding:18px 20px 16px;border-bottom:1px solid rgba(255,255,255,.1)}
.aside-brand .dot{width:38px;height:38px;border-radius:50%;flex:none;background:radial-gradient(circle at 35% 35%,var(--sun),var(--magma) 60%,#7c2d12);box-shadow:0 0 14px rgba(228,87,46,.5)}
.aside-brand b{font-family:'Bricolage Grotesque';font-size:1.06rem;line-height:1.2;display:block}
.aside-brand small{font-size:.8rem;color:#8fa8b8;letter-spacing:.05em;text-transform:uppercase;font-weight:700}
.nav-menu{flex:1;padding:14px 10px;display:flex;flex-direction:column;gap:5px;overflow-y:auto}
.nav-item{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:transparent;border:none;color:#b9cdd9;font-size:.96rem;font-weight:700;padding:12px 15px;border-radius:13px;cursor:pointer;transition:all .12s cubic-bezier(0.2,0,0,1);position:relative;user-select:none}
.nav-item .ic{font-size:1.2rem;width:24px;text-align:center;flex:none}
.nav-item:hover{background:rgba(255,255,255,.09);color:#fff;transform:translateX(2px)}
.nav-item:active{transform:translateY(2px)}
.nav-item.active{background:var(--magma);color:#fff;box-shadow:0 3px 0 #a83513;transform:none}
.nav-item.active:hover{background:#eb6036;transform:translateY(-1px);box-shadow:0 4px 0 #a83513}
.nav-item.active:active{transform:translateY(2px);box-shadow:0 1px 0 #a83513}
.nav-item.active::before{content:"";position:absolute;left:-10px;top:20%;bottom:20%;width:4px;border-radius:4px;background:var(--sun)}
.nav-item .num{margin-left:auto;font-size:.78rem;font-weight:800;background:rgba(255,255,255,.14);padding:2px 8px;border-radius:99px}
.nav-item.active .num{background:rgba(0,0,0,.22)}
.aside-foot{padding:16px 18px;border-top:1px solid rgba(255,255,255,.1);font-size:.8rem;color:#8fa8b8;line-height:1.55}
.aside-foot b{color:#dbe8f0;display:block;font-size:.88rem;margin-bottom:2px}

/* ===== MAIN ===== */
main{flex:1;min-width:0;display:flex;flex-direction:column}
/* topbar */
.topbar{flex:none;display:flex;align-items:center;gap:14px;background:#fff;border-bottom:1px solid var(--line);padding:10px 24px;min-height:58px;position:relative;z-index:5}
.topbar .partner-banner{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;justify-content:center}
.topbar-logo-img{height:36px;width:auto;max-width:100%;object-fit:contain;display:block}
.topbar .crumb{margin-left:auto;position:relative;z-index:2;font-size:.88rem;color:var(--muted);font-weight:600;background:var(--paper);border:1px solid var(--line);padding:6px 16px;border-radius:99px;white-space:nowrap}
@media(max-width:680px){.topbar .partner-banner{position:static;transform:none}}
@media(max-width:480px){.topbar .partner-banner{display:none}}
/* area halaman */
.pages{flex:1;min-height:0;position:relative}
.page{position:absolute;inset:0;overflow-y:auto;padding:34px 40px 56px;display:none;animation:pageIn .35s ease}
.page.active{display:block}
@keyframes pageIn{from{opacity:0;transform:translateX(16px)}to{opacity:1;transform:none}}
.page::-webkit-scrollbar{width:9px}
.page::-webkit-scrollbar-thumb{background:#cfc5b4;border-radius:9px}
@media(max-width:700px){.page{padding:22px 18px 90px}}

/* ================= NO-SCROLL MATERIAL SPLIT VIEW ================= */
.page.fit-view{padding:18px 24px;overflow:hidden;height:100%;box-sizing:border-box;position:relative}
.page.fit-view.active{display:flex;flex-direction:column}
.mobile-view-toggle{display:none;gap:8px;margin-bottom:12px;flex:none;position:relative;z-index:2}
.mobile-toggle-btn{flex:1;padding:10px 16px;border-radius:12px;border:2px solid rgba(255,255,255,.35);font-size:.88rem;font-weight:800;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);color:var(--deep);cursor:pointer;transition:all .15s}
.mobile-toggle-btn.active{background:var(--magma);color:#fff;border-color:var(--magma);box-shadow:0 3px 0 #a83513}

/* Background Per Halaman Materi (Deep Cinematic Vignette) */
#page-struktur{
  background:radial-gradient(circle at 60% 40%, rgba(14,42,58,.68) 0%, rgba(7,23,32,.88) 100%),
             linear-gradient(180deg, rgba(14,42,58,.75) 0%, rgba(7,23,32,.85) 100%),
             url('../images/bg_struktur.jpg') center center/cover no-repeat;
}
#page-lempeng{
  background:radial-gradient(circle at 50% 50%, rgba(10,34,48,.68) 0%, rgba(5,18,26,.88) 100%),
             linear-gradient(180deg, rgba(10,34,48,.75) 0%, rgba(5,18,26,.85) 100%),
             url('../images/bg_lempeng.jpg') center center/cover no-repeat;
}
#page-vulkanisme{
  background:radial-gradient(circle at 65% 35%, rgba(42,16,10,.68) 0%, rgba(12,22,30,.88) 100%),
             linear-gradient(180deg, rgba(32,14,10,.75) 0%, rgba(10,18,26,.85) 100%),
             url('../images/bg_vulkanisme.jpg') center center/cover no-repeat;
}
#page-endogen{
  background:radial-gradient(circle at 55% 45%, rgba(28,32,36,.68) 0%, rgba(8,20,28,.88) 100%),
             linear-gradient(180deg, rgba(22,28,34,.75) 0%, rgba(8,18,26,.85) 100%),
             url('../images/bg_endogen.jpg') center center/cover no-repeat;
}

.material-split{position:relative;z-index:1;flex:1;min-height:0;display:grid;grid-template-columns:1.08fr .92fr;gap:20px;height:100%;box-sizing:border-box}
.model-frame-card{height:100%;min-height:0;background:#091b26;border-radius:20px;border:2px solid rgba(255,255,255,.2);box-shadow:0 12px 36px rgba(0,0,0,.35);position:relative;overflow:hidden;display:flex;flex-direction:column}
.model-frame-card iframe{width:100%;height:100%;border:none;flex:1;display:block}
.model-badge{position:absolute;top:12px;left:12px;background:rgba(14,42,58,.88);backdrop-filter:blur(8px);color:var(--sun);font-size:.82rem;font-weight:800;padding:6px 14px;border-radius:999px;border:1px solid rgba(247,201,72,.35);display:flex;align-items:center;gap:7px;z-index:2;pointer-events:none}
.model-author-bar{position:absolute;bottom:10px;right:14px;background:rgba(0,0,0,.65);backdrop-filter:blur(6px);color:#a8c0d0;font-size:.78rem;font-weight:600;padding:4px 10px;border-radius:6px;z-index:2;pointer-events:none}

.slider-frame-card{height:100%;min-height:0;background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-radius:20px;border:2px solid rgba(255,255,255,.45);box-shadow:0 12px 36px rgba(0,0,0,.25),0 2px 8px rgba(0,0,0,.15);display:flex;flex-direction:column;box-sizing:border-box;padding:24px 26px;overflow:hidden}
.slider-header{flex:none;margin-bottom:12px}
.slider-top-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.slider-step-count{font-size:.85rem;font-weight:800;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.slider-topic-tag{font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--magma);background:#fdeee6;border:1px solid #f6d3c2;padding:4px 12px;border-radius:999px}
.slider-stepper-track{height:8px;background:var(--line);border-radius:99px;overflow:hidden;position:relative}
.slider-stepper-fill{height:100%;background:linear-gradient(90deg,var(--magma),var(--sun));border-radius:99px;transition:width .35s cubic-bezier(0.2,0,0,1)}

.slider-body{flex:1;min-height:0;position:relative;overflow-y:auto;overflow-x:hidden;padding-right:4px}
.slider-body::-webkit-scrollbar{width:5px}
.slider-body::-webkit-scrollbar-thumb{background:#d5ccbd;border-radius:6px}
.slide-item{position:absolute;inset:0;display:none;flex-direction:column;justify-content:center;animation:slideFade .22s ease}
.slide-item.active{display:flex}
@keyframes slideFade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.slide-item h3{font-size:1.42rem;color:var(--deep);margin-bottom:10px;line-height:1.28}
.slide-item p{font-size:1.02rem;color:#394854;line-height:1.62;margin-bottom:14px}
.slide-item .highlight-box{background:linear-gradient(135deg,#fcf7f0,#fbf3e6);border-left:4px solid var(--magma);border-radius:12px;padding:13px 17px;margin-bottom:14px;font-size:.95rem;line-height:1.6;color:#63431f}
.slide-item .highlight-box b{color:var(--magma)}
.slide-item .info-points{list-style:none;margin-bottom:14px;display:flex;flex-direction:column;gap:8px}
.slide-item .info-points li{font-size:.96rem;color:#354551;display:flex;align-items:flex-start;gap:10px;line-height:1.55}
.slide-item .info-points li .b-ic{flex:none;font-size:1.05rem;line-height:1.3}

.slider-footer{flex:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1.5px solid var(--line);margin-top:auto}
.slider-footer .btn{font-size:.94rem;padding:11px 20px}
.slider-footer .btn:disabled{opacity:.4;cursor:not-allowed;transform:none!important;box-shadow:none!important}

@media(max-width:850px){
  .page.fit-view{padding:14px 14px 80px}
  .mobile-view-toggle{display:flex}
  .material-split{grid-template-columns:1fr;gap:0}
  .material-split .model-frame-card{display:none}
  .material-split .slider-frame-card{display:flex}
  .material-split.show-model .model-frame-card{display:flex}
  .material-split.show-model .slider-frame-card{display:none}
}

/* ================= KOMPONEN ================= */
.sec-tag{display:inline-flex;font-size:.82rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--magma);background:#fdeee6;border:1px solid #f6d3c2;padding:6px 14px;border-radius:999px;margin-bottom:12px}
.sec-title{font-size:clamp(1.5rem,2.8vw,2.2rem);color:var(--deep);margin-bottom:8px}
.sec-sub{color:var(--muted);max-width:760px;margin-bottom:26px;font-size:1.02rem;line-height:1.6}
.grid-2{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:center}
@media(max-width:950px){.grid-2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 6px 18px rgba(30,45,60,.06)}
.card h4{color:var(--deep);font-size:1.1rem;margin-bottom:6px}
.card p{font-size:.95rem;color:#44535e;line-height:1.55}
.mini{font-size:.82rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--magma);display:block;margin-bottom:6px}
.pill{font-size:.78rem;font-weight:800;padding:4px 10px;border-radius:999px;color:#fff}
.pill.eff{background:var(--good)}.pill.exp{background:var(--bad)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:800;font-size:.95rem;padding:13px 26px;border-radius:14px;border:none;cursor:pointer;transition:all .12s cubic-bezier(0.2,0,0,1);text-decoration:none;user-select:none;position:relative}
.btn-magma{background:var(--magma);color:#fff;box-shadow:0 4px 0 #b33914,0 6px 16px rgba(228,87,46,.3)}
.btn-magma:hover{background:#eb6036;transform:translateY(-1px);box-shadow:0 5px 0 #b33914,0 8px 20px rgba(228,87,46,.35)}
.btn-magma:active{transform:translateY(3px);box-shadow:0 1px 0 #b33914,0 2px 6px rgba(228,87,46,.2)}
.btn-outline{background:rgba(255,255,255,.09);color:#fff;border:2px solid rgba(255,255,255,.35);box-shadow:0 4px 0 rgba(255,255,255,.2)}
.btn-outline:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.55);transform:translateY(-1px);box-shadow:0 5px 0 rgba(255,255,255,.25)}
.btn-outline:active{transform:translateY(3px);box-shadow:0 1px 0 rgba(255,255,255,.15)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{font-size:.84rem;font-weight:700;background:#fdeee6;color:#b8431f;border:1px solid #f6d3c2;padding:5px 13px;border-radius:999px}
.callout{margin-top:26px;background:linear-gradient(120deg,#fdf3e3,#fdeee6);border:1.5px solid #f2d9a8;border-radius:16px;padding:20px 24px}
.callout b{color:#8a5a12;display:flex;align-items:center;gap:8px;margin-bottom:8px;font-size:1.02rem}
.callout ul{list-style:none}
.callout li{font-size:.98rem;color:#6b5225;padding:6px 0 6px 28px;position:relative;line-height:1.55}
.callout li::before{content:"?";position:absolute;left:0;top:6px;width:19px;height:19px;background:#f7c948;color:#4a3000;border-radius:50%;font-size:.78rem;font-weight:800;display:flex;align-items:center;justify-content:center}
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}
@media(max-width:820px){.cards-3{grid-template-columns:1fr}}
.tab-bar{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:20px}
.tab-btn{font-weight:800;font-size:.92rem;padding:11px 20px;border-radius:13px;border:2px solid #e0d8cc;background:#fff;color:#5f707c;cursor:pointer;box-shadow:0 3px 0 #cfc5b4;transition:all .12s cubic-bezier(0.2,0,0,1);user-select:none}
.tab-btn:hover{background:#fdfcf9;border-color:#d4cabb;color:var(--deep);transform:translateY(-1px);box-shadow:0 4px 0 #baa996}
.tab-btn:active{transform:translateY(2px);box-shadow:0 1px 0 #baa996}
.tab-btn.active{background:var(--deep);border-color:var(--deep);color:#fff;box-shadow:0 3px 0 #061722}
.tab-btn.active:hover{background:#133b52;border-color:#133b52;transform:translateY(-1px);box-shadow:0 4px 0 #061722}
.tab-btn.active:active{transform:translateY(2px);box-shadow:0 1px 0 #061722}
.tab-panel{display:none}
.tab-panel.active{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center;animation:pageIn .3s ease}
@media(max-width:950px){.tab-panel.active{grid-template-columns:1fr}}
.anim-stage{background:linear-gradient(170deg,var(--panel),#0a1f2d);border-radius:18px;padding:16px;border:1px solid #1d4257}
.anim-stage svg,.vol-svg,.earth-svg{width:100%;height:auto;display:block}
.tab-desc h3{color:var(--deep);font-size:1.35rem;margin-bottom:8px}
.tab-desc p{font-size:1.02rem;color:#394854;margin-bottom:12px;line-height:1.6}
.info-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 10px 30px rgba(30,45,60,.08)}
.info-card h3{color:var(--deep);font-size:1.35rem;margin-bottom:4px}
.info-card .depth{font-size:.84rem;font-weight:700;color:var(--magma);margin-bottom:10px;text-transform:uppercase;letter-spacing:.08em}
.info-card p{font-size:1.02rem;color:#394854;line-height:1.6}
.info-card ul{margin:10px 0 0;padding-left:18px;font-size:.96rem;color:#394854;line-height:1.6}
.info-card ul li{margin-bottom:5px}
.seismic-note{margin-top:16px;background:#fdf6ec;border:1px solid #f0e2c8;border-radius:12px;padding:13px 17px;font-size:.92rem;color:#7a5b34;line-height:1.55}
.seismic-note b{color:#9a6b1c}

/* ===== BERANDA ===== */
#page-beranda{
  background:radial-gradient(circle at 75% 25%, rgba(18,59,82,.62) 0%, rgba(7,23,32,.9) 100%),
             linear-gradient(135deg, rgba(14,42,58,.82) 0%, rgba(7,23,32,.92) 100%),
             url('../images/bg_beranda.jpg') center center/cover no-repeat;
  color:#fff;
}
#page-beranda::before{content:"";position:fixed;pointer-events:none;inset:0;background:radial-gradient(600px 300px at 85% 15%,rgba(228,87,46,.28),transparent 70%),radial-gradient(400px 260px at 8% 95%,rgba(247,201,72,.15),transparent 70%)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;max-width:1100px;margin:0 auto;position:relative;z-index:2;min-height:100%}
@media(max-width:950px){.hero-grid{grid-template-columns:1fr}}
.hero-grid h1{font-size:clamp(2rem,4.5vw,3.1rem);letter-spacing:-.02em;margin:12px 0 14px}
.hero-grid h1 em{font-style:normal;color:var(--sun)}
.hero-grid .lead{color:#c8d8e2;max-width:560px;margin-bottom:20px;font-size:1.06rem;line-height:1.65}
.hero-badges{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:22px}
.hbadge{font-size:.82rem;font-weight:600;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:6px 14px;border-radius:999px;color:#e8f1f6}
.hero-goal{margin-top:22px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.15);border-left:4px solid var(--sun);border-radius:12px;padding:15px 18px;max-width:560px}
.hero-goal b{display:block;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--sun);margin-bottom:6px}
.hero-goal span{font-size:.98rem;color:#d7e4ec;line-height:1.6}
/* slot 3D */
.model-slot{background:#091b26;border:2px solid rgba(255,255,255,.2);border-radius:22px;min-height:380px;height:420px;position:relative;overflow:hidden;box-shadow:0 12px 36px rgba(0,0,0,.35);display:flex;flex-direction:column}
.model-slot iframe{width:100%;height:100%;border:none;flex:1;display:block}

/* ===== STRUKTUR ===== */
.earth-svg .layer{cursor:pointer;transition:filter .2s}
.earth-svg .layer:hover{filter:brightness(1.18)}
.earth-svg .layer.sel{filter:brightness(1.25) drop-shadow(0 0 12px rgba(242,132,44,.7))}

/* ===== ANIMASI LEMPENG ===== */
.convL{animation:convL 4s ease-in-out infinite}
@keyframes convL{0%,100%{transform:translateX(0)}50%{transform:translateX(46px)}}
.convR{animation:convR 4s ease-in-out infinite}
@keyframes convR{0%,100%{transform:translate(0,0)}50%{transform:translate(-46px,26px)}}
.divL{animation:divL 4s ease-in-out infinite}
@keyframes divL{0%,100%{transform:translateX(-16px)}50%{transform:translateX(-52px)}}
.divR{animation:divR 4s ease-in-out infinite}
@keyframes divR{0%,100%{transform:translateX(16px)}50%{transform:translateX(52px)}}
.magUp{animation:magUp 4s ease-in-out infinite}
@keyframes magUp{0%,100%{opacity:.25;transform:scaleY(.5)}50%{opacity:1;transform:scaleY(1)}}
.trTop{animation:trTop 4s ease-in-out infinite}
@keyframes trTop{0%,100%{transform:translateX(-20px)}50%{transform:translateX(20px)}}
.trBot{animation:trBot 4s ease-in-out infinite}
@keyframes trBot{0%,100%{transform:translateX(20px)}50%{transform:translateX(-20px)}}

/* ===== VULKANISME ===== */
.vol-svg{background:linear-gradient(#8fc4dd 0 34%,var(--panel) 34%);border-radius:18px;border:1px solid #1d4257}
.vpart{cursor:pointer}
.vpart:hover{filter:brightness(1.25)}
.vpart.sel{filter:brightness(1.3) drop-shadow(0 0 10px rgba(247,201,72,.8))}
.magma-blob{animation:magmaBlob 3s linear infinite;opacity:0}
.magma-blob:nth-of-type(2){animation-delay:1s}.magma-blob:nth-of-type(3){animation-delay:2s}
@keyframes magmaBlob{0%{opacity:0;transform:translateY(0)}12%{opacity:1}88%{opacity:1}100%{opacity:0;transform:translateY(-190px)}}
#eruption{opacity:0;pointer-events:none}
.erupting #eruption{opacity:1}
.erupting .e-particle{animation:ePart 1.6s ease-out infinite}
.erupting .e-particle:nth-child(2){animation-delay:.4s}
.erupting .e-particle:nth-child(3){animation-delay:.8s}
.erupting .e-particle:nth-child(4){animation-delay:1.2s}
@keyframes ePart{0%{transform:translate(0,0) scale(1);opacity:1}100%{transform:translate(var(--dx),var(--dy)) scale(.3);opacity:0}}
.erupting .e-plume{animation:ePlume 1.6s ease-in-out infinite;transform-origin:400px 160px}
@keyframes ePlume{0%{transform:scaleY(.4);opacity:.4}60%{transform:scaleY(1);opacity:.85}100%{transform:scaleY(1.15);opacity:0}}
.erupting .e-lava{animation:eLava 3s ease-in-out infinite;transform-origin:top}
@keyframes eLava{0%{transform:scaleX(.2);opacity:0}30%{opacity:1}100%{transform:scaleX(1);opacity:0}}
.vol-legend{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.vol-legend button{font-size:.85rem;font-weight:800;padding:8px 16px;border-radius:12px;border:2px solid #f0b04a;background:#fff8ee;color:#8a5a12;cursor:pointer;box-shadow:0 3px 0 #d99933;transition:all .12s cubic-bezier(0.2,0,0,1);user-select:none}
.vol-legend button:hover{background:#fff;transform:translateY(-1px);box-shadow:0 4px 0 #c78622}
.vol-legend button:active{transform:translateY(2px);box-shadow:0 1px 0 #c78622}
.vol-legend button.on{background:var(--sun);color:#4a3000;border-color:#e0b236;box-shadow:0 3px 0 #bd8c17}
.vol-legend button.on:hover{transform:translateY(-1px);box-shadow:0 4px 0 #bd8c17}
.vol-legend button.on:active{transform:translateY(2px);box-shadow:0 1px 0 #bd8c17}
.erupt-btn{margin-top:12px;width:100%;justify-content:center}
.vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
@media(max-width:820px){.vs-grid{grid-template-columns:1fr}}

/* ===== ENDOGEN ===== */
.foldG{animation:foldG 4.5s ease-in-out infinite;transform-origin:400px 250px}
@keyframes foldG{0%,100%{transform:scaleX(1)}55%,80%{transform:scaleX(.62)}}
.faultR{animation:faultR 4s ease-in-out infinite}
@keyframes faultR{0%,15%{transform:translateY(0)}45%,75%{transform:translateY(-34px)}100%{transform:translateY(0)}}
.grabMid{animation:grabMid 4.5s ease-in-out infinite}
@keyframes grabMid{0%,15%{transform:translateY(0)}50%,80%{transform:translateY(30px)}100%{transform:translateY(0)}}
.shake{animation:shake .12s linear infinite}
@keyframes shake{0%{transform:translate(0)}25%{transform:translate(.6px,-.6px)}50%{transform:translate(-.6px,.4px)}75%{transform:translate(.4px,.6px)}}
.factor-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:820px){.factor-row{grid-template-columns:1fr}}
.factor-row .card{border-top:4px solid var(--magma)}
.factor-row.exo .card{border-top-color:#2e7ea6}
.factor-row.anto .card{border-top-color:#7a5aa0}
.balance{margin-top:24px;background:var(--deep);color:#dbe8f0;border-radius:18px;padding:22px 26px;display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.balance .b-ic{font-size:1.7rem}
.balance h4{color:var(--sun);margin-bottom:4px;font-size:1.15rem}
.balance p{font-size:.98rem;line-height:1.6}

/* ===== KUIS ===== */
#page-kuis{
  background:radial-gradient(circle at 50% 30%, rgba(18,46,64,.72) 0%, rgba(8,22,32,.92) 100%),
             linear-gradient(180deg, rgba(14,38,54,.76) 0%, rgba(6,18,26,.9) 100%),
             url('../images/bg_kuis.jpg') center center/cover no-repeat;
  color:#fff;
}
#page-kuis .sec-tag{background:rgba(247,201,72,.15);border-color:rgba(247,201,72,.4);color:var(--sun)}
#page-kuis .sec-title{color:#fff}
#page-kuis .sec-sub{color:#d5e5ef}
.quiz-box{max-width:760px;margin:0 auto;background:rgba(14,42,58,.82);border:1.5px solid rgba(255,255,255,.22);border-radius:22px;padding:32px;backdrop-filter:blur(16px);box-shadow:0 16px 44px rgba(0,0,0,.4)}
.q-progress{height:8px;background:rgba(255,255,255,.14);border-radius:99px;overflow:hidden;margin-bottom:8px}
.q-progress i{display:block;height:100%;background:linear-gradient(90deg,var(--magma),var(--sun));border-radius:99px;transition:width .4s}
.q-count{font-size:.88rem;font-weight:700;color:#9fb9c8;margin-bottom:16px}
.q-img{background:#fff;border-radius:14px;padding:10px;margin-bottom:16px;text-align:center}
.q-img svg{max-width:100%;height:auto;max-height:190px}
.q-text{font-size:1.22rem;font-weight:700;margin-bottom:18px;line-height:1.45}
.q-opt{display:flex;gap:14px;align-items:center;width:100%;text-align:left;font-size:1.02rem;font-weight:600;background:rgba(255,255,255,.07);border:2px solid rgba(255,255,255,.2);color:#e8f1f6;padding:14px 18px;border-radius:16px;margin-bottom:12px;cursor:pointer;box-shadow:0 4px 0 rgba(0,0,0,.3);transition:all .12s cubic-bezier(0.2,0,0,1);user-select:none;position:relative}
.q-opt:hover:not(:disabled){border-color:var(--sun);background:rgba(255,255,255,.12);transform:translateY(-1px);box-shadow:0 5px 0 rgba(0,0,0,.35)}
.q-opt:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px 0 rgba(0,0,0,.3)}
.q-opt:disabled{cursor:default}
.q-opt .letter{flex:none;width:32px;height:32px;border-radius:10px;background:rgba(255,255,255,.14);border:1.5px solid rgba(255,255,255,.22);box-shadow:0 2px 0 rgba(0,0,0,.25);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem;color:#fff;transition:.12s}
.q-opt:hover:not(:disabled) .letter{border-color:var(--sun);color:var(--sun)}
.q-opt.correct{border-color:#34b37a;background:#248358;color:#fff;box-shadow:0 4px 0 #155537}
.q-opt.correct .letter{background:#1d6c48;border-color:#34b37a;box-shadow:0 2px 0 #11422b;color:#fff}
.q-opt.wrong{border-color:#e05353;background:#b33535;color:#fff;box-shadow:0 4px 0 #731e1e}
.q-opt.wrong .letter{background:#8c2626;border-color:#e05353;box-shadow:0 2px 0 #571313;color:#fff}
.q-fb{font-size:.96rem;line-height:1.55;border-radius:12px;padding:12px 16px;margin-top:8px;display:none}
.q-fb.show{display:block}
.q-fb.ok{background:rgba(46,158,107,.18);border:1px solid rgba(46,158,107,.5);color:#c9f0dd}
.q-fb.no{background:rgba(214,69,69,.15);border:1px solid rgba(214,69,69,.5);color:#f6cfcf}
.q-actions{margin-top:18px;display:flex;justify-content:flex-end}
#q-result{text-align:center;padding:10px 0}
.score-ring{width:145px;height:145px;margin:0 auto 16px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:conic-gradient(var(--sun) calc(var(--p)*1%),rgba(255,255,255,.12) 0);position:relative}
.score-ring::before{content:"";position:absolute;inset:12px;border-radius:50%;background:#122e40}
.score-ring b{position:relative;font-size:1.8rem;font-family:'Bricolage Grotesque';color:#fff}
.score-ring b small{font-size:.95rem;color:#9fb9c8}
.r-stats{display:flex;gap:13px;justify-content:center;margin:16px 0 22px;flex-wrap:wrap}
.r-stats div{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:14px;padding:12px 22px;min-width:115px}
.r-stats b{display:block;font-size:1.4rem;font-family:'Bricolage Grotesque'}
.r-stats span{font-size:.82rem;color:#9fb9c8;text-transform:uppercase;letter-spacing:.08em;font-weight:700}
.r-stats .ok b{color:#5fd39d}.r-stats .no b{color:#f08a8a}

/* ===== SIDEBAR MOBILE: jadi bottom bar ===== */
@media(max-width:760px){
  #app{flex-direction:column-reverse} /* bar di bawah pada layar kecil */
  aside{width:100%;flex-direction:row;border-right:none;border-top:1px solid rgba(255,255,255,.12)}
  .aside-brand,.aside-foot{display:none}
  .nav-menu{flex-direction:row;padding:6px;gap:2px;overflow-x:auto}
  .nav-item{flex-direction:column;gap:4px;font-size:.78rem;padding:9px 10px;flex:1;min-width:64px;text-align:center;border-radius:10px;box-shadow:none!important;transform:none!important}
  .nav-item .ic{width:auto;font-size:1.25rem}
  .nav-item .num,.nav-item .lbl-full{display:none}
  .nav-item.active::before{display:none}
}

/* ================= PRELOADER ================= */
#preloader{position:fixed;inset:0;background:radial-gradient(circle at 50% 40%,#153d54 0%,#0e2a3a 45%,#071720 100%);z-index:999999;display:flex;align-items:center;justify-content:center;transition:opacity .55s ease,visibility .55s ease;user-select:none}
#preloader.fade-out{opacity:0;visibility:hidden;pointer-events:none}
.pre-content{display:flex;flex-direction:column;align-items:center;text-align:center;padding:24px;max-width:440px}
.pre-logo-wrap{position:relative;width:120px;height:120px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.pre-ring{position:absolute;inset:-6px;border-radius:50%;border:2.5px dashed var(--sun);border-top-color:var(--magma);animation:preRingSpin 6s linear infinite;opacity:.85}
.pre-logo{width:108px;height:108px;object-fit:contain;border-radius:50%;filter:drop-shadow(0 6px 18px rgba(0,0,0,.45));animation:preLogoPulse 2.4s ease-in-out infinite}
@keyframes preRingSpin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes preLogoPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
.pre-title{font-size:1.95rem;color:#fff;font-family:'Bricolage Grotesque',sans-serif;letter-spacing:-.01em;margin-bottom:6px}
.pre-title span{color:var(--sun)}
.pre-sub{font-size:.9rem;font-weight:600;color:#9eb7c7;margin-bottom:22px;letter-spacing:.02em}
.pre-progress-track{width:240px;height:7px;background:rgba(255,255,255,.12);border-radius:99px;overflow:hidden;position:relative;margin-bottom:10px;box-shadow:inset 0 1px 3px rgba(0,0,0,.3)}
.pre-progress-bar{height:100%;width:0%;background:linear-gradient(90deg,var(--magma),var(--sun));border-radius:99px;transition:width .2s ease}
.pre-status{font-size:.85rem;font-weight:600;color:#85a2b5;letter-spacing:.04em}