/* Glass surfaces frame the illustrations; reading surfaces stay opaque. */
:root{--ease-soft:cubic-bezier(.2,.8,.2,1);--glass:rgba(240,248,255,.14)}
body{background-image:radial-gradient(ellipse at 15% 0%,#536fc455,transparent 55%),linear-gradient(125deg,#102963b8,#172a678c),url('assets/galaxie/galaxie-cartoon.png')}
.shell{max-width:1440px;padding:26px 40px 16px}
.welcome{gap:18px;margin-bottom:24px;min-height:88px}
h1{font-size:clamp(2rem,3.8vw,3.4rem);font-weight:800;text-shadow:0 3px 18px #0c1a4540;letter-spacing:-1.6px}
.avatar-button{width:82px;height:82px;border:2px solid #ffffffb0;box-shadow:0 8px 24px #051d4540,0 0 0 7px #ffffff10}
.greeting p{font-size:1.1rem;font-weight:500;color:#e0ebff}
.parent-button{background:#ffffff16;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-color:#ffffff35;padding:12px 18px;color:#fff;border-radius:18px}
.home-grid{height:clamp(500px,70svh,760px);gap:22px}
.mission-card,.world-card{border:1px solid #ffffff90;border-radius:34px;box-shadow:inset 0 1px 0 #ffffff90,0 22px 60px #081b553b}
.mission-card:after{background:linear-gradient(0deg,#162e79fa 0%,#142f79e8 19%,#11265455 48%,transparent 68%)}
.mission-content{left:26px;right:26px;bottom:24px}
.mission-content h2{font-size:1rem;letter-spacing:.05em;text-shadow:none;text-transform:uppercase;color:#cbdfff}
.mission-invite{font-size:clamp(1.75rem,2.65vw,2.6rem);font-weight:800;line-height:1.15;margin-top:10px;letter-spacing:-.7px}
.mission-meta{font-size:.95rem;color:#deebff;margin:14px 0 22px}
.start-button{width:min(100%,440px);min-height:64px;font-size:1.65rem;border:1px solid #fff6ba;border-radius:23px;background:linear-gradient(160deg,#fff19e,#ffd652);box-shadow:inset 0 2px 1px #fffbd8,0 7px 20px #091e6240;color:#233466;transition:transform 260ms var(--ease-soft),box-shadow 260ms var(--ease-soft)}
.start-button:active{transform:scale(.98);box-shadow:0 2px 8px #08173330}
.side-cards{gap:22px}
.world-label{border-top:1px solid #ffffffc0;min-height:78px;font-size:1.8rem;background:linear-gradient(135deg,#effaffee,#c6e7facf);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:none}
.play-card .world-label{background:linear-gradient(135deg,#f4efffeb,#d9cdf6d9);border-color:#ffffffa0}
.world-card{transition:transform 320ms var(--ease-soft),box-shadow 320ms var(--ease-soft)}
.world-card img{transition:transform 650ms var(--ease-soft)}
@media(hover:hover){.world-card:hover{transform:translateY(-5px);box-shadow:0 28px 64px #081b5559}.world-card:hover img{transform:scale(1.035)}.action:hover{transform:translateY(-2px);filter:brightness(1.025)}}
button{transition:transform 220ms var(--ease-soft),background-color 220ms var(--ease-soft),box-shadow 220ms var(--ease-soft)}
button:active:not(:disabled){transform:scale(.975)}
dialog{border:1px solid #ffffffb0;border-radius:32px;background:#f4f7fcf7;box-shadow:0 40px 120px #00133170;max-height:calc(100svh - 32px)}
dialog::backdrop{background:#08183970;backdrop-filter:blur(16px) saturate(.8);-webkit-backdrop-filter:blur(16px) saturate(.8)}
dialog[open]{animation:dialog-appear 330ms var(--ease-soft)}
.dialog-top{padding:14px 22px;background:#edf3fbcc;backdrop-filter:blur(16px);border-bottom:1px solid #223e6010;position:sticky;top:0;z-index:3}
.close-button{border:1px solid #fff;background:#ffffffc9;box-shadow:0 2px 5px #243f6210}
.dialog-location{font-weight:700;letter-spacing:.01em}
.learning-dialog{width:min(1100px,calc(100% - 40px))}
.learning-dialog #dialog-content{padding:0!important}
.exercise-layout{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr);min-height:540px}
.exercise-world{position:relative;overflow:hidden;isolation:isolate;background:#193d75;min-height:100%}
.exercise-illustration{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.exercise-world:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#142c62f5,#142c6220 65%,transparent)}
.world-caption{position:absolute;z-index:1;bottom:34px;left:28px;right:28px;color:white}
.world-kicker{font-size:.7rem;letter-spacing:.12em;font-weight:700;color:#d8ebff}
.world-caption strong{display:block;font-size:2rem;line-height:1.2;margin-top:12px;letter-spacing:-.7px}
.step-orbit{display:flex;gap:9px;margin-top:24px}.step-orbit span{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#ffffff15;border:1px solid #ffffff45;font-size:.875rem}.step-orbit .current{background:#fff0ad;color:#234066;box-shadow:0 0 0 5px #fff0ad20}.step-orbit .complete{background:#c6efda;color:#1c6249;border-color:#c6efda}
.exercise-task{padding:30px 36px;background:#f8faff;min-width:0}
.learning-dialog .exercise-task .eyebrow{font-size:.875rem;margin:0 0 9px;line-height:1.4;color:#617493}
.learning-dialog #dialog-content progress{height:5px;display:block;margin:0 0 28px!important;border:0;border-radius:4px;overflow:hidden;appearance:none}
progress::-webkit-progress-bar{background:#e4ebf6}progress::-webkit-progress-value{background:#5a82d3;border-radius:4px;transition:width 400ms var(--ease-soft)}progress::-moz-progress-bar{background:#5a82d3}
.learning-dialog #dialog-content h2{font-size:clamp(1.6rem,2.6vw,2.1rem);line-height:1.22;margin:0 0 16px;letter-spacing:-.6px}
.learning-dialog #dialog-content p{font-size:1.05rem;line-height:1.5;margin:10px 0}
.learning-dialog #answer-form{margin-top:22px;gap:12px}
#answer-form label{font-size:.9rem;color:#526786}
.learning-dialog #lesson-answer{border:1px solid #c3d2e6;background:#fff;padding:14px 18px;font-size:1.7rem;border-radius:18px;box-shadow:0 2px 5px #38588208;transition:border-color .2s,box-shadow .2s}
#lesson-answer:focus{outline:none;border-color:#668adb;box-shadow:0 0 0 4px #709beb26}
.action{border-radius:16px;border-width:1px;font-weight:700;box-shadow:0 3px 7px #2038600c}
.action.gold{background:linear-gradient(135deg,#ffe996,#ffd355);border-color:#edcc6d;color:#233b65}
.action.light{background:#eaf1fc;border-color:#d6e2f4;color:#345789}
#answer-form>.action{justify-self:stretch;margin-top:4px;min-height:54px;font-size:1.15rem}
.accent-keys{gap:7px}.accent-keys button{background:#fff;border-color:#d6e0ee;min-width:38px;min-height:40px;font-size:1.1rem;border-radius:11px;box-shadow:0 2px 2px #17335108}
.word-to-learn{background:#edf3ff;border:1px solid #dee8f8;box-shadow:inset 0 1px 0 white;font-size:2.7rem;padding:26px 12px;margin:22px 0}
.lesson-navigation{border-top:1px solid #dde6f2;margin-top:22px;padding-top:8px;gap:12px}
.text-button{text-decoration:none;color:#4d668e;font-size:.95rem}.text-button:hover{text-decoration:underline}
.feedback{background:#eaf0fa;border:1px solid #dbe5f5;font-size:1rem;padding:14px 16px;margin-top:16px}
.feedback.success{background:#e1f4ec;border-color:#b5e0cd;color:#245d47}
.is-listening{box-shadow:0 0 0 5px #6795e425!important;background:#dceafa!important}
.activity-option{position:relative;border:1px solid #dbe5f2;padding:12px;gap:16px;box-shadow:0 3px 10px #2b406008;transition:transform 220ms var(--ease-soft),box-shadow 220ms var(--ease-soft)}
.activity-option:hover{transform:translateX(3px);box-shadow:0 6px 20px #24457712}
.activity-option .lesson-thumb{width:88px;height:78px;flex:none;object-fit:cover;border-radius:14px}
.activity-option:has(.lesson-thumb) .lesson-number{position:absolute;left:18px;bottom:15px;width:24px;height:24px;font-size:.8rem;margin:0;border-radius:8px;display:grid;background:#fff2c9;box-shadow:0 2px 8px #172a4840}
.activity-option strong{font-size:1.12rem}.activity-option small{font-size:.9rem;line-height:1.45}
.reward-name{background:linear-gradient(120deg,#fff6d7,#fff0b9);border:1px solid #ead99a;box-shadow:0 8px 30px #efd68926}
.reward-avatar{animation:reward-arrive 600ms var(--ease-soft)}
@keyframes dialog-appear{from{opacity:0;transform:translateY(16px) scale(.985)}to{opacity:1;transform:none}}
@keyframes reward-arrive{from{opacity:0;transform:scale(.85) translateY(10px)}to{opacity:1;transform:none}}
@keyframes home-arrive{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.welcome{animation:home-arrive 500ms var(--ease-soft) both}.mission-card{animation:home-arrive 600ms 60ms var(--ease-soft) both}.work-card{animation:home-arrive 600ms 130ms var(--ease-soft) both}.play-card{animation:home-arrive 600ms 200ms var(--ease-soft) both}
@media(max-width:900px){.shell{padding:22px}.exercise-task{padding:26px}.exercise-layout{grid-template-columns:.65fr 1fr}.world-caption{left:20px;right:20px}.world-caption strong{font-size:1.6rem}.step-orbit{gap:6px}.step-orbit span{width:29px;height:29px}.world-label{font-size:1.5rem}}
@media(max-width:700px){.shell{padding:18px 14px}.home-grid{height:auto;grid-template-columns:1fr}.mission-card{height:550px}.side-cards{grid-template-columns:1fr 1fr;grid-template-rows:220px}.avatar-button{width:60px;height:60px}.welcome{gap:12px}.greeting p{font-size:.9rem}.parent-button{padding:10px;font-size:.85rem}.world-label{font-size:1.2rem;min-height:62px}.learning-dialog{width:calc(100% - 20px)}.exercise-layout{display:block;min-height:0}.exercise-world{height:100px;min-height:0}.exercise-illustration{object-position:center 45%}.world-caption{bottom:16px;left:22px}.world-kicker{font-size:.7rem}.world-caption strong,.step-orbit{display:none}.exercise-task{padding:22px}.learning-dialog #dialog-content progress{margin-bottom:22px!important}.learning-dialog #dialog-content h2{font-size:1.65rem}.learning-dialog #answer-form{margin-top:16px}.mission-meta{max-width:none;font-size:.875rem}.start-button{font-size:1.45rem}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media(prefers-reduced-transparency:reduce){.parent-button{background:#24437e}.world-label{background:#d7eefa}.play-card .world-label{background:#e4dafa}dialog{background:#f8faff}dialog::backdrop{background:#102249e8}}