@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{color-scheme:dark;--bg:#060b1c;--panel:#101a32;--ink:#f5f8ff;--muted:#a9b7cf;--cyan:#63e6ff;--gold:#ffce52;--line:#ffffff18}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Outfit,Arial,sans-serif;font-size:16px;line-height:1.6}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--cyan);outline-offset:5px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.08;letter-spacing:-.035em}h2{font-size:clamp(2.2rem,4vw,3.5rem);margin-bottom:20px}h3{font-size:1.45rem}p{color:var(--muted)}.wrap{width:min(1240px,calc(100% - 64px));margin:auto}.nav{position:sticky;top:0;z-index:20;background:#060b1cee;backdrop-filter:blur(18px);border-bottom:1px solid 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em{font-style:normal;background:linear-gradient(90deg,#5be2ff,#a990ff);background-clip:text;color:transparent}.hero .subtitle{font-size:1.3rem;color:#f1f6ff;margin-bottom:12px}.hero p{max-width:460px;font-size:1.07rem}.actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 20px}.text-link{font-size:.9rem;color:#c2d0e4;display:inline-block;padding:8px 0}.text-link span{margin-left:12px;color:var(--cyan)}.hero-caption{position:absolute;right:7%;bottom:90px;border-left:2px solid var(--cyan);padding-left:15px;font-size:.8rem;color:#b9d3e7}.hero-caption strong{display:block;font-family:'Space Grotesk';color:#fff;letter-spacing:.12em}.strip{border-bottom:1px solid var(--line);border-top:1px solid var(--line);background:#0b1225}.strip-inner{padding:20px 0;display:flex;justify-content:center;gap:50px;color:#b4c3d9;font-size:.88rem}.strip span::first-letter{color:var(--cyan)}section.section{padding:100px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:36px}.section-head p{max-width:385px;margin:0}.section-head h2{margin-bottom:0}.world-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.world{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:18px;min-height:280px;background:linear-gradient(150deg,var(--tint),#0b1329 80%);padding:25px 22px;transition:transform .25s,border-color .25s}.world:hover{transform:translateY(-8px);border-color:var(--accent)}.world .symbol{font-size:3.5rem;display:block;margin:12px 0 34px;filter:drop-shadow(0 0 22px var(--accent))}.world h3{font-size:1.23rem;margin-bottom:9px}.world p{font-size:.9rem;margin-bottom:20px}.world .arrow{color:var(--accent);position:absolute;right:20px;top:23px}.world-number{font-family:'Space Grotesk';font-size:.72rem;letter-spacing:.1em;color:#aab9cf}.split{display:grid;grid-template-columns:1fr 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40px}.page-hero h1{font-size:clamp(2.7rem,5vw,4.5rem)}.hub-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:25px;margin:30px 0 60px}.media-card{border:1px solid var(--line);border-radius:20px;padding:28px;background:#101a30}.media-card img{width:100%;border-radius:14px}.hub-meta{display:flex;gap:30px;font-size:.85rem;flex-wrap:wrap}.login-area{min-height:calc(100vh - 85px);display:grid;place-items:center;padding:55px 24px;background:linear-gradient(#060b1c77,#060b1ced),url('/hero.webp') center/cover}.login-card{width:min(460px,100%);border:1px solid #ffffff26;background:#0b1427ed;backdrop-filter:blur(20px);border-radius:24px;padding:38px}.login-card h1{font-size:2.2rem}.tabs{display:flex;gap:8px;margin:25px 0;background:#050b19;padding:5px;border-radius:10px}.tabs button{flex:1;border:0;background:transparent;color:var(--muted);padding:10px;border-radius:7px}.tabs button.active{background:#1d2c46;color:white}label{display:block;font-size:.9rem;margin:16px 0 7px}input{width:100%;background:#070e1d;border:1px solid #ffffff25;border-radius:9px;padding:12px;color:white}.login-card .btn{width:100%;margin-top:20px}.status{padding:12px;border-radius:10px;background:#63e6ff0b;border:1px solid #63e6ff24;color:#b7cfe8;font-size:.87rem}.legal{max-width:760px;margin:70px auto;min-height:45vh}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:100;max-width:calc(100% - 32px);width:430px;border:1px solid #63e6ff55;border-radius:12px;background:#13223a;box-shadow:0 20px 80px #0009;padding:20px;display:none}.toast.show{display:block}.toast button{float:right;background:none;border:0;color:white;font-size:1.2rem}.app-shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}.sidebar{border-right:1px solid var(--line);padding:25px}.sidebar a{display:block;padding:12px;border-radius:8px;margin:8px 0}.sidebar 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0}.atomverse,.school{padding:28px 22px}.atomverse .split{gap:25px}.school-grid{gap:10px}.school-item{padding:16px}.mission .chip{display:none}.footer-links{margin-top:25px;gap:18px}.login-card{padding:28px}.app-shell{grid-template-columns:1fr}.sidebar{border-right:0;border-bottom:1px solid var(--line)}.sidebar nav{display:flex;overflow:auto}.app-main{padding:24px}.page-hero{padding-top:50px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}
.logo{display:inline-flex;align-items:center;gap:10px}.logo img{border-radius:11px;box-shadow:0 0 18px #4bd7ff22;flex-shrink:0}.logo sup{align-self:flex-start;padding-top:8px}.hub-icon{width:120px;height:120px;border-radius:26px;box-shadow:0 12px 55px #925dff33;margin-bottom:25px}.login-icon{width:74px;height:74px;border-radius:18px;margin-bottom:25px}.password-row{position:relative}.password-row input{padding-right:65px}.password-toggle{position:absolute;right:8px;top:8px;padding:5px 8px;background:transparent;border:0;color:var(--cyan);font-size:.86rem}.text-button{border:0;background:none;color:var(--cyan);padding:14px 0;font-size:.9rem}.status.error{border-color:#ff9aa36b;background:#502339;color:#ffdde0}.status .btn{display:block;margin-top:12px;width:fit-content}.login-card [hidden]{display:none!important}.login-card a:not(.btn){text-decoration:underline;text-underline-offset:3px}.login-card fieldset:disabled{opacity:.65}.profile-banner{display:flex;align-items:center;gap:20px;margin:28px 0}.profile-banner img{border-radius:15px}.profile-banner strong{font-size:1.6rem}.stat-value{font-family:'Space Grotesk',sans-serif;font-size:2rem;color:var(--cyan)}.account-stats{margin:28px 0}.profile-meta{display:flex;gap:25px;flex-wrap:wrap;margin-bottom:28px;font-size:.9rem}.sidebar .logo{font-size:1.18rem;gap:6px}.sidebar .logo img{width:32px;height:32px}.app-main{min-width:0}.app-shell .world-grid{grid-template-columns:repeat(auto-fit,minmax(155px,1fr))}@media(max-width:1050px){.nav-inner{gap:16px}.nav-links{font-size:.83rem;gap:15px}.nav-inner .logo{font-size:1.4rem}}@media(max-width:760px){.nav-inner .logo{font-size:1.35rem}.nav-inner .logo img{width:36px;height:36px}.sidebar .logo{font-size:1.35rem}.sidebar nav{align-items:center}.sidebar nav a{white-space:nowrap}.profile-meta{gap:0}.profile-meta p{width:100%}.app-shell .world-grid{grid-template-columns:1fr 1fr}}
/* Learning experience: original Atomventure artwork and native progression. */
.app-shell{grid-template-columns:235px minmax(0,1fr)}.sidebar{position:sticky;top:0;height:100vh;overflow:auto;background:#080f21}.app-main{max-width:1600px;width:100%;padding:40px}.app-main>h1{margin-bottom:30px}.explorer-welcome{display:flex;gap:30px;align-items:center;border:1px solid #63e6ff33;background:linear-gradient(120deg,#152e46,#151933);border-radius:22px;padding:32px}.explorer-welcome img{width:150px;height:150px;object-fit:cover;border-radius:22px}.explorer-welcome h2{font-size:2.5rem;margin-bottom:12px}.quick-grid{display:flex;gap:12px;flex-wrap:wrap;margin:25px 0 45px}.learning-world-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}.learning-world{display:block;background:#101a30;border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:transform .2s,border-color 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var(--line);border-radius:22px;overflow:hidden;margin-bottom:28px;padding:25px}.world-intro>img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:16px}.world-intro h2{font-size:2.6rem}.journey-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:25px;align-items:start}.lesson-panel{background:#0f1c33;border:1px solid #63e6ff33;border-radius:18px;padding:30px}.lesson-copy{font-size:1.2rem;line-height:1.8;color:#d6e3f5;margin:25px 0;min-height:100px}.mission-list{padding:5px}.mission-row{width:100%;display:flex;align-items:center;gap:15px;text-align:left;color:white;background:#101a30;border:1px solid var(--line);padding:18px;border-radius:12px;margin-bottom:12px}.mission-row:hover:enabled{border-color:#63e6ff88;background:#152741}.mission-row:disabled{opacity:.5}.mission-row strong{display:block;font-size:1rem;margin-bottom:5px}.mission-row small{display:block;color:#aabbd3;line-height:1.5;font-size:.84rem}.mission-index{font-family:'Space 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#ffffff25;border-radius:12px;padding:18px;background:#0a1428;color:#eaf3ff;min-height:85px}.answer span{border:1px solid #ffffff25;padding:4px 11px;border-radius:7px;flex-shrink:0;color:#aebcd6}.answer:hover:enabled,.answer.selected{border-color:#63e6ff;background:#15364c}.answer.correct{border-color:#6addaa;background:#153c35}.answer.incorrect{border-color:#ff9aaf;background:#402337}.answer-feedback{padding:18px;border-left:3px solid var(--cyan);background:#ffffff05;margin:20px 0}.answer-feedback p{margin:6px 0}.answer-review{border-top:1px solid var(--line);margin-top:20px;padding-top:20px}.result-score{font-family:'Space Grotesk';font-size:5rem;line-height:1.1;color:var(--gold);margin-top:25px}.result-score small{font-size:2rem}.quiz-panel details{margin-top:30px}.quiz-panel summary{cursor:pointer;color:var(--cyan)}.badge-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px}.badge-card{border:1px solid var(--line);padding:28px;border-radius:18px;background:#111a2c}.badge-card.earned{border-color:#ffce5266;background:linear-gradient(135deg,#3a3033,#131b30)}.badge-card:not(.earned) .badge-icon{filter:grayscale(.8);opacity:.6}.badge-card .eyebrow{margin:16px 0 10px;font-size:.73rem}.badge-card p{font-size:.9rem}.badge-icon{font-size:3rem;display:block}.setup-panel{max-width:560px;margin:auto}.setup-panel form .btn{margin-top:22px}.lab-heading{max-width:700px;margin-bottom:30px}.lab-catalog{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px}.lab-tile{padding:0;overflow:hidden;border:1px solid var(--line);border-radius:19px;background:#101a30;color:white;text-align:left;transition:transform .2s}.lab-tile:hover{transform:translateY(-4px);border-color:#63e6ff88}.lab-tile img{width:100%;height:150px;object-fit:cover}.lab-tile>div{padding:24px}.lab-tile .eyebrow{font-size:.72rem}.lab-tile p{font-size:.93rem}.lab-tile div>span:last-child{color:var(--cyan)}.lab-workbench{padding:35px;border:1px solid #63e6ff33;border-radius:22px;background:linear-gradient(140deg,#0c2638,#13192d)}.lab-workbench h2{font-size:2.4rem}.control-grid{display:grid;grid-template-columns:1fr 1fr;gap:35px;align-items:center}.lab-workbench input[type=range]{padding:0;height:25px;margin:10px 0 20px;accent-color:#63e6ff}.lab-workbench .btn{margin:20px 8px 20px 0}.lab-workbench label{font-size:1rem}.lab-workbench output{color:var(--cyan)}select{font:inherit;width:100%;padding:13px;border-radius:10px;background:#0b1428;color:white;border:1px solid #ffffff30}.model-output{padding:25px;border:1px solid #ffffff18;border-radius:15px;background:#070e20a0;text-align:center;min-height:100px}.model-output:empty{display:none}.model-output svg{width:100%;max-height:270px}.science-explanation{margin-top:35px;padding:25px;border-radius:12px;background:#ffffff06;border-left:3px solid var(--cyan)}.science-explanation p{margin-bottom:0}.density-diagram{max-width:260px;margin:25px auto}.density-diagram div{padding:18px;color:#071526;font-weight:600}.density-diagram div:nth-child(1){background:#f1d768}.density-diagram div:nth-child(2){background:#78cbe4}.density-diagram div:nth-child(3){background:#cc9136}.drop-times{display:flex;justify-content:center;gap:35px}.drop-times strong{font-size:2rem;color:var(--cyan)}[hidden]{display:none!important}@media(max-width:1100px){.app-shell{grid-template-columns:205px minmax(0,1fr)}.app-main{padding:26px}.journey-layout{grid-template-columns:1fr}.world-intro{grid-template-columns:170px 1fr}.sidebar{padding:18px}.sidebar .logo{font-size:1.1rem}.challenge-grid{gap:15px}}@media(max-width:760px){.app-shell{grid-template-columns:1fr}.sidebar{position:relative;height:auto;padding:18px;overflow:visible}.sidebar nav{display:flex;overflow:auto;padding-bottom:5px}.sidebar nav a{font-size:.9rem}.app-main{padding:24px 18px}.explorer-welcome{padding:22px;gap:18px}.explorer-welcome img{width:80px;height:100px}.explorer-welcome h2{font-size:1.8rem}.explorer-welcome .eyebrow{font-size:.7rem}.account-stats{grid-template-columns:1fr 1fr}.world-intro{grid-template-columns:1fr;padding:20px}.world-intro>img{aspect-ratio:2;height:180px}.world-intro h2{font-size:2rem}.learning-world-grid{grid-template-columns:1fr}.learning-world>img{height:190px}.challenge-grid,.control-grid{grid-template-columns:1fr}.quiz-panel,.lab-workbench,.lesson-panel{padding:22px}.quiz-answers{grid-template-columns:1fr}.answer{min-height:65px;padding:14px}.quiz-top .eyebrow{font-size:.7rem}.lab-workbench h2{font-size:1.85rem}.quick-grid .btn{flex:1 1 100%}.badge-grid{grid-template-columns:1fr 1fr;gap:12px}.badge-card{padding:18px}.badge-card h3{font-size:1.15rem}.badge-card .eyebrow{font-size:.66rem}.lab-workbench .btn{margin-right:6px}.profile-meta{font-size:.85rem}}
/* Native MissionLearningScreen: focused, one page at a time. */
.native-mission{max-width:740px;margin:0 auto;border:1px solid #ffffff18;border-radius:22px;background:#080d1c;overflow:hidden}.native-mission header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;background:#0006}.native-mission header strong{font-size:1rem;text-align:center}.native-mission header .btn{padding:8px 14px}.native-mission>progress{display:block;width:100%;height:4px;border:0;border-radius:0;accent-color:var(--mission-color)}.native-body{text-align:center;padding:24px;min-height:420px}.native-card{background:#121a2e;border:1px solid color-mix(in srgb,var(--mission-color) 30%,transparent);border-radius:20px;padding:28px;margin:18px 0}.native-card h2,.native-body>h2{font-size:1.7rem;line-height:1.25;letter-spacing:-.02em}.native-card p{font-size:1rem;line-height:1.9;color:#c0c9dc;white-space:pre-line}.native-symbol{width:70px;height:70px;display:grid;place-items:center;border-radius:50%;margin:0 auto 20px;background:color-mix(in srgb,var(--mission-color) 15%,transparent);font-size:34px}.native-symbol.celebration{width:90px;height:90px;font-size:44px}.native-dots{display:flex;gap:8px;justify-content:center}.native-dots span{width:10px;height:10px;border-radius:50%;background:#27324a}.native-dots .on{background:var(--mission-color)}.native-mission footer{padding:16px;background:#0009;border-top:1px solid #ffffff15}.native-mission footer .btn{width:100%;background:var(--mission-color);color:#08101e;font-weight:800}.native-mission .status:empty{display:none}.native-rewards{color:#fbbf24!important;font-weight:800}.native-activity input[type=range]{width:100%;accent-color:var(--mission-color);margin:18px 0}.native-activity progress{width:100%;accent-color:var(--mission-color)}.native-pieces{display:flex;justify-content:center;gap:10px}.native-pieces .btn{font-size:22px;padding:14px 18px}.native-drag{display:flex;justify-content:center;gap:80px;align-items:center;height:150px}.atom-piece{height:70px;width:70px;border-radius:50%;font-size:32px;background:var(--mission-color);border:0;touch-action:none;cursor:grab;flex-shrink:0}.atom-piece[aria-pressed=true]{outline:3px solid white}.native-drag #native-target{width:100px;height:100px;border:2px dashed var(--mission-color);padding:8px}.game-missions{margin:24px 0}.native-body h2:focus{outline:none}@media(max-width:600px){.native-body{padding:18px 14px}.native-card{padding:22px 16px}.native-drag{gap:45px}.native-pieces .btn{padding:12px 15px}}
/* LabScreen / ExperimentDetailScreen from the native app. */
.native-lab{max-width:800px;margin:0 auto}.native-lab-welcome{display:flex;align-items:center;gap:20px;padding:24px;background:#15142d;border:1px solid #a78bfa60;border-radius:18px;margin-bottom:26px}.native-lab h2{font-size:1.4rem;letter-spacing:-.02em}.native-lab h3{font-size:1.1rem}.native-lab-welcome p{margin:8px 0 0;color:#b8c5db;line-height:1.65}.native-lab-catalog{display:grid;gap:14px;margin-top:18px}.native-lab-card{display:flex;align-items:center;text-align:left;gap:18px;width:100%;padding:20px;border:1px solid #a78bfa90;border-radius:16px;background:#a78bfa12;color:var(--text);cursor:pointer;font:inherit}.native-lab-card:hover{background:#a78bfa22}.native-lab-card.locked{border-color:#ffffff20;background:#101626}.native-lab-card img{width:50px;height:50px;object-fit:cover;border-radius:12px}.native-lab-description{flex:1}.native-lab-description strong{font-size:1rem}.native-lab-description>span:not(.lab-tag){display:block;margin-top:8px;color:#b8c5db;font-size:1rem;line-height:1.5}.native-lab-description small{display:block;color:#fbbf24;margin-top:8px;font-size:.875rem}.lab-tag{display:inline-block;margin:0 0 0 10px;padding:3px 7px;font-size:.75rem;font-weight:800;border-radius:5px;color:#fbbf24;background:#fbbf2418}.lab-tag.free{color:#4ade80;background:#4ade8018}.native-lab .status:empty{display:none}.lab-access-note{margin-top:22px;line-height:1.65}.native-lab-detail header{display:flex;align-items:center;gap:16px;margin-bottom:20px}.native-lab-intro{text-align:center;padding:26px;background:#131c2d;border:1px solid var(--lab-color);border-radius:18px}.native-lab-intro img{width:70px;height:70px;border-radius:50%;object-fit:cover;border:2px solid var(--lab-color);margin-bottom:12px}.native-lab-intro h3{font-size:1.4rem}.native-lab-intro p{color:#bcc8da;line-height:1.6}.lab-meta{display:flex;gap:18px;justify-content:center;color:var(--lab-color);font-size:.875rem}.lab-meta span+span{color:#facc15}.native-lab-progress{margin:24px 0}.native-lab-progress>div{display:flex;justify-content:space-between;margin-bottom:8px;font-size:.875rem}.native-lab-progress progress{display:block;width:100%;height:8px;accent-color:var(--lab-color)}.native-lab-steps{display:grid;gap:12px;margin:16px 0}.native-lab-step{width:100%;display:flex;align-items:flex-start;gap:14px;padding:16px;border:1px solid transparent;background:#ffffff09;border-radius:12px;color:#fff;text-align:left;cursor:pointer;font:inherit}.native-lab-step.current:not(.done){background:color-mix(in srgb,var(--lab-color) 8%,transparent);border-color:color-mix(in srgb,var(--lab-color) 40%,transparent)}.lab-step-number{display:grid;place-items:center;flex:0 0 32px;height:32px;border-radius:50%;background:#ffffff19;font-weight:700}.native-lab-step.done .lab-step-number{background:var(--lab-color);color:#08101e}.native-lab-step small{display:block;font-size:.875rem;color:#a5b4ca;margin-bottom:5px}.lab-step-copy{font-size:1rem;line-height:1.6;display:block}.native-lab-step.done .lab-step-copy{text-decoration:line-through;color:#a5b4ca}.lab-congrats{text-align:center;border:1px solid #4ade80;background:#4ade800b;border-radius:18px;margin:24px 0;padding:24px}.lab-congrats h3{color:#4ade80}.lab-congrats strong{color:#facc15}.lab-return{width:100%;background:var(--lab-color);color:#07101e;font-weight:800}.lab-science-note{font-size:.875rem;color:#bcc8da;line-height:1.6;margin:20px 0}.native-lab button:focus-visible{outline:3px solid #67e8f9;outline-offset:3px}@media(max-width:500px){.native-lab-card{padding:15px;gap:12px}.native-lab-card img{width:36px;height:36px}.lab-tag{margin:6px 0;display:table}.native-lab-welcome{padding:18px;gap:12px}.native-lab-detail header h2{font-size:1.15rem}}

.membership-rates{display:grid;gap:14px;margin:24px 0;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.membership-rates>div{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}.membership-rates>div>span{font-size:.875rem;color:var(--muted)}.membership-rates strong{font-size:2rem;line-height:1.2;letter-spacing:-.04em;color:var(--ink);white-space:nowrap}.membership-rates small{font-size:.95rem;letter-spacing:0;font-weight:400;color:var(--muted);margin-left:4px}.membership-note{text-align:center;font-size:.875rem;margin:24px auto 0;max-width:650px}.price .btn{width:100%}
.profile-banner #profile-avatar{width:88px;height:88px;object-fit:contain;border-radius:50%;border:2px solid var(--cyan);background:#101a32}.profile-level-panel{padding:26px;border:1px solid var(--line);background:var(--panel);border-radius:18px;margin-bottom:24px}.profile-level-panel h2{font-size:1.4rem}.profile-level-panel progress{width:100%;height:12px;accent-color:var(--cyan);margin:0 0 22px}.badge-summary{display:flex;justify-content:center;gap:70px;padding:26px;border:1px solid #ffce5266;border-radius:18px;background:#ffce5208;margin-bottom:32px}.badge-summary>div{display:grid;text-align:center;gap:6px}.badge-summary strong{font-size:2rem;color:var(--gold)}.badge-summary span{font-size:.875rem;color:var(--muted)}.badge-category{margin:30px 0}.badge-category h2{font-size:1.25rem;letter-spacing:0}.native-badge-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.native-badge{display:flex;align-items:center;gap:16px;padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:15px}.native-badge.earned{border-color:#ffce5260;background:#ffce5208}.native-badge h3{font-size:1rem;letter-spacing:0;margin-bottom:6px}.native-badge p{font-size:.95rem;line-height:1.6;margin-bottom:8px}.native-badge-icon{display:grid;place-items:center;flex:0 0 58px;height:58px;border-radius:50%;background:#ffffff08;font-size:32px;filter:grayscale(1);opacity:.5}.native-badge-icon img{width:42px;height:42px;object-fit:contain}.native-badge.earned .native-badge-icon{filter:none;opacity:1;background:#ffce5220}.badge-state{font-size:.875rem;color:var(--muted)}.native-badge.earned .badge-state{color:var(--gold)}@media(max-width:750px){.native-badge-list{grid-template-columns:1fr}.native-badge{padding:16px}.badge-summary{gap:45px}}
.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;align-items:start}.settings-card{padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:18px}.settings-card h2{font-size:1.3rem;letter-spacing:0}.settings-card h3{font-size:1rem}.settings-card p{line-height:1.65}.settings-plan{padding:15px;margin:12px 0;border:1px solid var(--line);border-radius:12px}.settings-plan p{margin:8px 0}.settings-card details{margin-top:18px}.settings-card summary{cursor:pointer;font-weight:700;color:var(--cyan)}.settings-toggle{display:flex;justify-content:space-between;align-items:center;padding:18px 0;border-bottom:1px solid var(--line);gap:16px}.settings-toggle input{width:24px;height:24px;accent-color:var(--cyan)}.settings-avatars{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.avatar-choice{font:inherit;color:white;background:#ffffff05;border:1px solid var(--line);border-radius:12px;padding:12px 5px}.avatar-choice img{display:block;width:64px;height:64px;object-fit:contain;margin:auto}.avatar-choice span{font-size:.875rem}.avatar-choice.selected{border-color:var(--cyan);background:#63e6ff18}.avatar-choice:disabled{opacity:.6}.settings-card input[type=text],.settings-card input:not([type]){width:100%;padding:12px;color:white;background:#ffffff08;border:1px solid var(--line);border-radius:10px;margin:12px 0}.certificate-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 0;border-bottom:1px solid var(--line)}.native-test{max-width:760px;margin:auto;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#080d1c}.native-test header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px;background:#0007}.native-test>progress{width:100%;height:5px;display:block;accent-color:var(--cyan)}.native-test .native-dots .on{background:var(--cyan)}.native-test .test-question{padding:24px;border:1px solid #63e6ff33;border-radius:20px;margin:20px 0;background:var(--panel)}.test-question h2{font-size:1.4rem;line-height:1.4;letter-spacing:0}.native-test footer{padding:16px;background:#0008}.native-test footer .btn{width:100%;background:var(--cyan);color:#091428}.test-rewards{padding:22px;border:1px solid #4ade8066;border-radius:15px;margin:20px 0}.test-rewards .btn{margin:5px}.test-review{text-align:left;margin-top:28px}.test-review h3{font-size:1.2rem}.certificate-dialog{max-width:min(900px,95vw);width:900px;background:#0d1730;color:white;border:1px solid var(--gold);border-radius:18px;padding:22px}.certificate-dialog::backdrop{background:#000b}.certificate-actions{display:flex;gap:12px;justify-content:flex-end;margin-bottom:20px}.print-certificate{padding:50px 35px;text-align:center;border:5px solid #ffd700;background:linear-gradient(135deg,#12214c,#0a1433);color:white}.cert-brand{color:#ffd700;letter-spacing:3px}.print-certificate>p{color:#c3cadc;margin:25px 0}.print-certificate h2{font-size:2.4rem;overflow-wrap:anywhere}.print-certificate h3{color:#ffd700;font-size:1.6rem}.print-certificate footer{display:flex;justify-content:space-between;text-align:left;border-top:1px solid #ffffff40;padding-top:20px;margin-top:30px;font-size:.875rem}.print-certificate footer div+div{text-align:right}@media(max-width:760px){.settings-grid{grid-template-columns:1fr}.settings-card{padding:20px}.native-test header strong{font-size:.9rem}.print-certificate{padding:30px 16px}.print-certificate h2{font-size:1.6rem}.cert-brand{letter-spacing:1px}}@media print{@page{size:landscape;margin:10mm}body>*:not(#certificate-dialog){display:none!important}#certificate-dialog{position:static!important;display:block!important;width:100%!important;max-width:none!important;border:0;padding:0;margin:0;background:white}#certificate-dialog .certificate-actions{display:none}.print-certificate{break-inside:avoid;print-color-adjust:exact;-webkit-print-color-adjust:exact}#certificate-dialog::backdrop{display:none}}
.tutor-panel{max-width:850px;padding:clamp(18px,4vw,36px);border:1px solid var(--line);border-radius:24px;background:linear-gradient(145deg,#101d37,#13142c)}.tutor-intro{display:flex;align-items:center;gap:24px}.tutor-intro img{width:100px;height:120px;object-fit:contain}.tutor-panel select,.tutor-panel textarea{width:100%;padding:14px;color:#fff;background:#091428;border:1px solid #52617e;border-radius:12px;font:inherit;margin:10px 0}.tutor-panel label{display:block;font-weight:600}.tutor-messages{display:flex;flex-direction:column;gap:14px;max-height:460px;overflow:auto;margin:24px 0}.tutor-message{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;padding:18px;border-radius:18px;max-width:90%;background:#202c45;color:#eef6ff}.tutor-message.user{align-self:flex-end;background:#123b51}.tutor-message.model{align-self:flex-start;border:1px solid #495584}@media(max-width:550px){.tutor-intro{gap:12px}.tutor-intro img{width:65px;height:85px}.tutor-message{max-width:100%}}
/* Signed-in app palette and rounded controls from native Theme.swift. */
.app-shell{--bg:#030712;--card:#0d1117;--muted:#94a3b8;--line:#1e293b;background:#030712;color:#fff;font-family:ui-rounded,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.app-shell .sidebar{background:#0d1117;border-color:#1e293b}
.app-shell .btn.primary,.app-shell .btn.cyan{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:white;border:0;border-radius:14px;font-weight:800}
.app-shell .settings-card,.app-shell .lesson-panel,.app-shell .mission-list,.app-shell .empty,.app-shell .learning-world{background:#0d1117;border-color:#1e293b;border-radius:18px}
.app-shell .sidebar nav a.active{background:#6366f121;color:#a78bfa}
.app-shell input{background:#1e293b;color:white}
.atom-header{display:flex;justify-content:space-between;gap:20px;padding:20px;background:#0f1629;border-radius:18px}.atom-header h2{font-size:1.7rem;margin:8px 0}.atom-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}.atom-map{display:block;width:100%;max-height:420px;object-fit:cover;border-radius:20px;margin:20px 0}.atom-gate img{width:100%;max-width:480px;border-radius:20px}.atom-content>h3{margin:24px 0 16px}.atom-content .settings-card h3{font-size:1.1rem}.atom-content .settings-card p{color:#94a3b8}.atom-content .learning-world img{height:210px;object-fit:cover}.atom-header strong{color:#f59e0b}@media(max-width:600px){.atom-header{flex-direction:column}.atom-tabs .btn{flex:1 1 auto}.atom-header h2{font-size:1.5rem}}
.atom-zone-symbol{height:210px;display:grid;place-items:center;font-size:4rem;background:#0f1629}
/* IntoTheAtomverseView: fixed HUD, scrolling node map, fixed bottom gear/actions. */
.app-main:has(.atom-hub)>h1,.app-main:has(.atom-hub)>.eyebrow{display:none}
.atom-hub{height:calc(100dvh - 56px);min-height:540px;max-width:850px;margin:auto;display:flex;flex-direction:column;background:#030712;border:1px solid #1e293b;border-radius:18px;overflow:hidden}
.atom-hub .atom-header{border-radius:0;background:#0005;padding:12px 16px;align-items:center;flex-shrink:0}.atom-header h2{font-size:1.15rem;margin:4px 0}.atom-header p{font-size:.875rem;margin:4px 0}.atom-tabs{margin:0;padding:8px 12px;gap:6px}.atom-tabs .btn{padding:8px 12px;font-size:.875rem}.atom-hub>.status{font-size:.875rem;padding:8px 14px;margin:0;border-radius:0;flex-shrink:0}.atom-content{overflow:auto;min-height:0;flex:1}.atom-content>.settings-grid,.atom-content>h3{margin:16px}.atom-path-scroll{height:100%;overflow:auto;background:radial-gradient(ellipse at top,#15133199,transparent 70%),#030712}.atom-path{position:relative;width:min(100%,380px);height:5070px;margin:auto}.atom-path>svg{position:absolute;width:100%;height:100%;pointer-events:none}.atom-path path{stroke:url(#atom-line);stroke-width:4;stroke-dasharray:8 8;stroke-linecap:round}.atom-node{position:absolute;transform:translate(-50%,-50%);background:none;border:0;color:white;display:flex;align-items:center;flex-direction:column;gap:4px}.atom-node-orb{width:50px;height:50px;display:grid;place-items:center;border-radius:50%;background:#475569;font-size:22px}.atom-node.boss .atom-node-orb{width:64px;height:64px}.atom-node.current .atom-node-orb{background:#6366f1;box-shadow:0 0 0 8px #6366f133,0 0 20px #6366f188}.atom-node small{font-size:12px;background:#0006;padding:3px 6px;border-radius:6px}.atom-node:disabled{opacity:.5}.atom-player-marker{position:absolute;top:-18px;right:-18px;width:42px;height:42px;object-fit:contain;border:3px solid #facc15;border-radius:50%;background:#030712}.atom-bottom{background:#000e;padding:8px 12px 12px;flex-shrink:0}.atom-mini-stats{display:flex;justify-content:center;gap:6px;margin-bottom:8px}.atom-mini-stats>div{display:flex;flex-direction:column;align-items:center;width:58px;padding:5px;background:#ffffff19;border-radius:14px}.atom-mini-stats small{font-size:12px;color:#94a3b8}.atom-bottom-actions{display:flex;gap:6px}.atom-bottom-actions>.btn{flex:1;padding:10px;text-align:center;border-radius:10px}.atom-bottom-actions>.btn:first-child{background:#0891b2}.atom-bottom-actions>.btn:nth-child(2){background:#7c3aed}.atom-zone-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:14px}.atom-zone-list button{border:1px solid #334155;background:#0d1117;color:#fff;border-radius:14px;overflow:hidden;padding:0;cursor:pointer}.atom-zone-list img{width:100%;aspect-ratio:853/1844;object-fit:cover;display:block}.atom-zone-list strong{display:block;padding:12px;font-size:14px}.atom-zone-scene{height:100%;min-height:500px;background-size:cover;background-position:center;display:flex;flex-direction:column;justify-content:space-between;padding:14px}.atom-zone-scene header{display:flex;gap:12px;align-items:center}.atom-zone-scene h3{font-size:1.1rem}.atom-zone-brief{background:#030712dc;border:1px solid #ffffff30;padding:18px;border-radius:16px}.atom-zone-brief p{font-size:1rem}@media(max-width:600px){.atom-hub{height:calc(100dvh - 140px);min-height:550px;border-radius:12px}.atom-hub .atom-header{flex-direction:row;gap:8px}.atom-header h2{font-size:1rem}.atom-header>div:last-child{max-width:40%;text-align:right}.atom-zone-list{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* Original map artwork remains visible behind the scrolling mission path. */
.atom-hub{background:#030712 url("/assets/map_atomverse.png") center center/cover no-repeat}.atom-path-scroll{background:linear-gradient(#03071226,#03071240)}.atom-hub .atom-header{background:#030712cc}.atom-hub .atom-tabs{background:#030712b8}.atom-hub>.status{background:#030712d9}.atom-bottom{background:#030712e8}

/* Native Atomverse mission scenes: original zone artwork stays visible. */
.atom-encounter{background-image:linear-gradient(#070c2499,#070c2466),var(--zone-art);background-size:cover;background-position:center;background-attachment:fixed;border-radius:22px;overflow:hidden;min-height:80vh;color:#fff}.atom-battle-header{padding:22px;background:#080e25bb;border-bottom:1px solid #ffffff25}.atom-battle-header>span{float:right;color:#bce9ff}.atom-battle-header h2{margin:16px 0 6px}.atom-battle-body{max-width:860px;margin:auto;padding:20px;display:grid;gap:16px}.atom-battle-panel{background:#09112bdc;border:1px solid #b8dbff40;border-radius:18px;padding:20px;box-shadow:0 12px 25px #0002;backdrop-filter:blur(8px)}.atom-battle-panel h3{margin-top:0}.atom-battle-panel p{color:#d5e6ff}.atom-combatants{display:grid;grid-template-columns:1fr 1fr;gap:16px}.atom-combat-avatar{width:64px;height:64px;object-fit:contain;float:right}.atom-meter{display:block;clear:both;margin:12px 0;color:#cce8ff;font-size:.85rem}.atom-meter strong{float:right}.atom-meter progress{display:block;width:100%;height:12px;margin-top:6px;accent-color:#33d6af}.atom-answers{display:grid;grid-template-columns:1fr 1fr;gap:10px}.atom-answers button{text-align:left;white-space:normal;min-height:48px}.atom-battle-panel select{display:block;width:100%;padding:12px;margin:10px 0;border-radius:10px;background:#101e40;color:white;border:1px solid #667b9c;font:inherit}.atom-battle-panel select option{background:#101e40}.atom-battle-panel li{margin:10px 0}.atom-battle-panel .done{color:#72e0b7}.atom-dial{display:block;margin:20px 0}.atom-dial input{display:block;width:100%;margin-top:16px;accent-color:#fff;background:linear-gradient(to right,#d1a13f 38%,#26bb83 38%,#26bb83 62%,#d1a13f 62%);height:14px;border-radius:8px;appearance:none}.atom-result{text-align:center;border-color:#f2cf60}.atom-attack-detail{font-size:.85rem;color:#abd9f6}.atom-battle-panel summary{cursor:pointer;color:#72d8fc;font-weight:700}@media(max-width:600px){.atom-battle-header{padding:16px}.atom-battle-header>span{float:none;display:block;margin-top:12px}.atom-battle-body{padding:10px;gap:10px}.atom-battle-panel{padding:14px}.atom-combatants{gap:8px}.atom-combatants h3{font-size:1rem}.atom-combat-avatar{width:40px;height:40px}.atom-answers{grid-template-columns:1fr}.atom-encounter{background-attachment:scroll}.atom-meter strong{float:none;display:block}}
.free-price{margin:26px 0}.free-price strong{font-size:3rem;color:#92e9ff}.free-price p{margin:4px 0}.school-plans-heading{margin-top:64px}.teacher-pricing{grid-template-columns:repeat(2,minmax(0,1fr));max-width:900px;margin:auto}.price{display:flex;flex-direction:column}.price>.btn{margin-top:auto}.price ul{flex:1}.membership-options{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.membership-options label{border:1px solid #6680a1;border-radius:12px;padding:14px;cursor:pointer}.membership-options input{width:auto;margin-right:8px}@media(max-width:680px){.teacher-pricing{grid-template-columns:1fr}}
.membership-page{max-width:780px;margin:auto}.membership-page select{display:block;width:100%;padding:12px;border:1px solid #657b9c;background:#0d1732;color:white;border-radius:10px;font:inherit;margin:10px 0 24px}.membership-page li{margin:12px 0}.membership-page .settings-toggle{display:block}.membership-page .settings-toggle input{width:auto;margin-right:10px}
.atom-event-banner{margin:12px;padding:18px;background:linear-gradient(130deg,#1a2448ed,#341c50e8);border:1px solid #c5a4ff77;border-radius:16px}.atom-event-banner h3{margin:0 0 10px}.atom-event-banner p{margin:7px 0}.atom-cosmic-message{margin:12px;color:#b6e6ff;font-family:monospace}
/* Native dashboard sections adapted to the web app's science theme. */
.dashboard-lock{max-width:520px;margin:2rem auto}.dashboard-lock img{display:block;margin:auto}.dashboard-lock form,.settings-card #pin-form,.settings-card #join-class{display:grid;gap:14px}.dashboard-lock input,#pin-form input,#join-class input:not([type=checkbox]){display:block;width:100%;padding:12px;border:1px solid #526784;border-radius:10px;background:#101a30;color:#fff;font:inherit}.dashboard-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.dashboard-tabs{margin:20px 0}.dashboard-rows{margin:0}.dashboard-rows>div{display:flex;justify-content:space-between;gap:20px;padding:9px 0;border-bottom:1px solid #ffffff12}.dashboard-rows dt{color:#a9bbd2}.dashboard-rows dd{margin:0;text-align:right;overflow-wrap:anywhere}.dashboard-world{display:grid;gap:8px;margin:18px 0}.dashboard-world span{font-size:.875rem;color:#a9bbd2}.dashboard-world progress{width:100%;accent-color:#57cffa}.class-code{display:block;font-size:2rem;letter-spacing:.2em;color:#64dbff;margin:18px 0}.student-card{padding:16px 0;border-bottom:1px solid #ffffff24}.student-card h4{font-size:1.2rem}.dashboard-tabs .btn{white-space:normal}

.event-calendar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:24px 0}.event-calendar>div{border:1px solid #293354;border-radius:12px;padding:12px;display:grid;gap:7px;font-size:12px}.event-calendar strong{color:#8be4ff}.event-calendar .current-month{border-color:#47d6ef;background:#47d6ef12}.event-answers{display:grid;gap:12px}.event-answers .btn{white-space:normal;text-align:left} @media(max-width:650px){.event-calendar{grid-template-columns:repeat(2,minmax(0,1fr))}}