.create-user{width:100%;max-width:min(320px,100%);margin:1rem auto;padding:1rem;background:var(--surface);border-radius:var(--radius);box-sizing:border-box}.create-user-intro{margin:0 0 1rem;font-size:.95rem;color:var(--text-muted);text-align:center}.create-user-form label{display:block;margin-bottom:.75rem;font-size:.9rem;color:var(--text-muted)}.create-user-form input{display:block;width:100%;min-width:0;margin-top:.25rem;padding:.5rem .75rem;font-size:1rem;background:var(--bg);color:var(--text);border:1px solid var(--card);border-radius:var(--radius);box-sizing:border-box}.create-user-form button{margin-top:.5rem;width:100%;background:var(--cta);color:var(--cta-text);font-weight:600}.create-user-form button:hover:not(:disabled){background:var(--cta-hover);filter:brightness(1.05)}.create-user-error{margin:.5rem 0 0;font-size:.85rem;color:var(--danger)}.landing{width:100%;max-width:720px;margin:0 auto;padding:0 0 2rem;min-width:0;box-sizing:border-box}@media (min-width: 480px){.landing{padding-bottom:3rem}}.landing-hero{text-align:center;padding:1.25rem 0 2rem}@media (min-width: 480px){.landing-hero{padding:2rem 0 2.5rem}}.landing-title{margin:0 0 1rem;font-size:clamp(1.75rem,5vw,2.25rem);font-weight:700;letter-spacing:-.02em;line-height:1.2;color:var(--text)}.landing-lead{margin:0 auto 1.75rem;max-width:min(420px,100%);font-size:1.05rem;line-height:1.6;color:var(--text-muted);padding:0 .25rem;box-sizing:border-box}.landing-cta-wrap{display:flex;flex-direction:column;align-items:center;gap:.75rem}.landing-cta{display:inline-block;padding:1rem 2rem;font-size:1.1rem;font-weight:600;color:var(--cta-text);background:var(--cta);border-radius:var(--radius);text-decoration:none;transition:filter .15s,box-shadow .15s,background .15s}.landing-cta:hover{background:var(--cta-hover);filter:brightness(1.05);box-shadow:0 4px 20px #affc4159;text-decoration:none}.landing-cta-hint{margin:0;font-size:.95rem;color:var(--text-muted)}.landing-cta-hint a{color:var(--accent);font-weight:600}.landing-cta-hint a:hover{text-decoration:underline}.landing-product{padding:2rem 0;border-top:1px solid color-mix(in srgb,var(--surface) 80%,transparent)}.landing-section-title{margin:0 0 1.5rem;font-size:1.25rem;font-weight:700;text-align:center;color:var(--text)}.landing-screens{display:grid;grid-template-columns:1fr;gap:1.5rem;align-items:start}@media (min-width: 480px){.landing-screens{grid-template-columns:repeat(2,1fr);gap:1.5rem}}@media (min-width: 640px){.landing-screens{grid-template-columns:repeat(3,1fr);gap:1.5rem}}.landing-screen{display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center}.landing-screen-image{width:100%;max-width:280px;min-width:0;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--card)}.landing-screen-image svg{width:100%;height:auto;display:block}.landing-screen-caption{margin:0;font-size:.9rem;line-height:1.45;color:var(--text-muted)}.landing-footer-cta{margin-top:2rem;padding-top:2rem;border-top:1px solid color-mix(in srgb,var(--surface) 80%,transparent);text-align:center}.landing-footer-text{margin:0 0 1rem;font-size:1.1rem;font-weight:600;color:var(--text)}.landing-cta-secondary{background:var(--surface);color:var(--accent);border:2px solid var(--accent)}.landing-cta-secondary:hover{background:var(--accent);color:var(--cta-text);border-color:var(--accent)}.layout{width:100%;max-width:520px;margin:0 auto;min-height:100%;display:flex;flex-direction:column;padding:0 .75rem 1rem;box-sizing:border-box}@media (min-width: 480px){.layout{padding:0 1rem 1rem}}.layout:has(.layout-main-with-drawer){max-width:900px}.layout:has(.layout-main-with-drawer) .layout-user-badge-header{display:none}.layout:has(.layout-main-with-drawer) .layout-header{padding-left:3.25rem}@media (min-width: 480px){.layout:has(.layout-main-with-drawer) .layout-header{padding-left:3.5rem}}.layout-header{text-align:center;padding:.75rem 0;border-bottom:1px solid var(--surface)}.layout-title{font-size:clamp(1.2rem,4vw,1.5rem);font-weight:700;letter-spacing:-.02em;color:var(--text);text-decoration:none;display:inline-block;word-break:break-word;max-width:100%}.layout-title:hover{color:var(--accent)}.layout-subtitle{margin:.25rem 0 0;font-size:.9rem;color:var(--text-muted)}.layout-lang-switch{display:flex;gap:.25rem;justify-content:center;margin-top:.5rem}.layout-lang{padding:.25rem .5rem;font-size:.8rem;font-weight:600;color:var(--text-muted);background:var(--surface);border:1px solid var(--card);border-radius:var(--radius);cursor:pointer}.layout-lang:hover{color:var(--text)}.layout-lang.active{color:var(--accent);border-color:var(--accent)}.layout-user-select{margin-top:.5rem;padding:.35rem .75rem;font-size:.85rem;background:var(--surface);color:var(--text);border:1px solid var(--card);border-radius:var(--radius);cursor:pointer}.layout-error{margin:.5rem 0;padding:.5rem;background:color-mix(in srgb,var(--danger) 20%,transparent);color:var(--danger);border-radius:var(--radius);font-size:.9rem}.layout-loading{padding:2rem;text-align:center;color:var(--text-muted)}.layout-menu-btn{position:fixed;top:calc(.75rem + var(--safe-top, 0));left:.75rem;z-index:1001;min-width:3rem;min-height:3rem;width:3rem;height:3rem;padding:0;display:flex;align-items:center;justify-content:center;background:var(--surface);color:var(--text);border:1px solid var(--card);border-radius:var(--radius);cursor:pointer;font-size:1.25rem;transition:background .15s,color .15s,box-shadow .15s}@media (min-width: 480px){.layout-menu-btn{left:1rem}}.layout-menu-btn:hover{background:var(--card);color:var(--accent)}.layout-menu-btn:focus-visible{outline:2px solid var(--cta);outline-offset:2px}.layout-menu-icon{line-height:1}.layout-drawer{position:fixed;top:0;left:0;bottom:0;z-index:1000;width:min(260px,85vw);max-width:85vw;background:var(--surface);border-right:1px solid var(--card);box-shadow:var(--shadow);transform:translate(-100%);transition:transform .25s ease;overflow:hidden;display:flex;flex-direction:column}.layout-drawer.open{transform:translate(0)}.layout-drawer-inner{display:flex;flex-direction:column;height:100%;min-height:0;padding:3.5rem 0 1.5rem .75rem;overflow-y:auto;overflow-x:hidden}@media (min-width: 480px){.layout-drawer-inner{padding-left:1rem}}.layout-drawer-user{padding:0 .75rem .75rem;border-bottom:1px solid var(--card);margin-bottom:.75rem}.layout-drawer-email{font-size:.85rem;color:var(--text-muted);word-break:break-all}.layout-drawer-lang{display:flex;gap:.25rem;padding:0 .75rem .75rem;border-bottom:1px solid var(--card);margin-bottom:.75rem}.layout-drawer-nav{display:flex;flex-direction:column;gap:.25rem;padding-right:.5rem;overflow-y:auto}.layout-drawer-nav .layout-nav-link{padding:.65rem .75rem;border-radius:var(--radius);display:block}.layout-drawer-nav .layout-nav-link.active{background:color-mix(in srgb,var(--cta) 25%,var(--surface));color:var(--cta);font-weight:700}.layout-drawer-nav .layout-logout{margin-top:auto;margin-left:0;text-align:left;color:var(--text-muted)}.layout-drawer-nav .layout-logout:hover{color:var(--danger);background:color-mix(in srgb,var(--danger) 15%,transparent)}.layout-drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:999;background:#0006;opacity:0;pointer-events:none;transition:opacity .2s ease}.layout-drawer-backdrop.open{opacity:1;pointer-events:auto}.layout-nav{display:flex;flex-wrap:wrap;gap:.5rem;padding:.75rem 0;border-bottom:1px solid var(--surface)}.layout-nav-link{padding:.5rem .75rem;font-size:.9rem;font-weight:600;color:var(--text-muted);text-decoration:none;border-radius:var(--radius);transition:background .15s,color .15s}.layout-nav-link:hover{color:var(--text);background:var(--surface)}.layout-nav-link.active{color:var(--accent);background:var(--surface)}.layout-auth-nav{display:flex;gap:.5rem;padding:.75rem 0;border-bottom:1px solid var(--surface)}.layout-user-badge{font-size:.85rem;color:var(--text-muted);margin-top:.25rem;display:inline-block}.layout-logout{background:none;border:none;cursor:pointer;font:inherit;margin-left:auto}.layout-logout:hover{color:var(--accent)}.layout-main{flex:1;padding-top:1rem}.layout-main-with-drawer{padding-top:3.5rem;padding-left:.25rem;width:100%;min-width:0}@media (min-width: 480px){.layout-main-with-drawer{padding-left:.5rem}}.layout-train-viewport{height:100vh;max-height:100vh;overflow:hidden}.layout-train-viewport .layout-main,.layout-train-viewport .layout-main-with-drawer{flex:1;min-height:0;overflow:hidden;display:flex;flex-direction:column}.error-boundary{padding:2rem;text-align:center;max-width:min(420px,100%);margin:0 auto}.error-boundary h2{margin:0 0 .5rem;font-size:1.25rem}.error-boundary p{margin:0 0 1rem;color:var(--text-muted)}.error-boundary-details{font-size:.8rem;text-align:left;background:var(--surface);padding:.75rem;border-radius:var(--radius);margin-bottom:1rem;overflow:auto;max-height:120px}.error-boundary-actions{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap}.page-skeleton{padding:2rem;text-align:center;color:var(--text-muted)}.app{width:100%;max-width:min(420px,100%);margin:0 auto;flex:1;display:flex;flex-direction:column;gap:1rem;min-width:0}.app-header{text-align:center;padding:.5rem 0}.app-header h1{margin:0;font-size:1.75rem;font-weight:700;letter-spacing:-.02em}.app-header .subtitle{margin:.25rem 0 0;font-size:.95rem;color:var(--text-muted)}.deck{flex:1;display:flex;flex-direction:column;align-items:center;gap:1rem;width:100%}.deck-loading{color:var(--text-muted);padding:2rem}.deck-progress{font-size:.85rem;color:var(--text-muted)}.deck-nav{display:flex;gap:.75rem;margin-top:.5rem}.card-wrapper{width:100%;display:flex;flex-direction:column;align-items:center;gap:.75rem}.card{width:100%;min-height:200px;max-height:280px;aspect-ratio:4/3;max-width:100%;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);position:relative;transform-style:preserve-3d;cursor:pointer;transition:transform .4s ease;display:flex;align-items:center;justify-content:center;padding:1.5rem}.card-flipped{transform:rotateY(180deg)}.card-face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;border-radius:var(--radius);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1.5rem}.card-back{transform:rotateY(180deg)}.card-label{margin:0;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted)}.card-word{margin:.5rem 0 0;font-size:clamp(1.5rem,6vw,2.25rem);font-weight:600;text-align:center;line-height:1.2}.card-speaker{margin-top:1rem;width:48px;height:48px;border-radius:50%;background:var(--surface);color:var(--text);font-size:1.25rem;display:flex;align-items:center;justify-content:center;padding:0;flex-shrink:0}.card-speaker:hover:not(:disabled){background:var(--accent);color:var(--cta-text)}.card-audio-error{font-size:.75rem;color:var(--danger);margin-top:.25rem}.card-hint{font-size:.8rem;color:var(--text-muted);margin:0}.card-stats{font-size:.85rem;color:var(--text-muted);margin:0}.card-actions{display:flex;gap:.75rem;width:100%;justify-content:center;flex-wrap:wrap}.btn{min-width:120px;font-weight:600}.btn-primary{background:var(--cta);color:var(--cta-text)}.btn-primary:hover:not(:disabled){background:var(--cta-hover);filter:brightness(1.05);box-shadow:0 4px 16px #affc414d}.btn-ghost{background:transparent;color:var(--text-muted)}.btn-ghost:hover{color:var(--text)}.btn-correct{background:var(--success);color:var(--success-text)}.btn-correct:hover:not(:disabled){filter:brightness(1.08);box-shadow:0 4px 16px #b2ff9e59}.btn-incorrect{background:var(--danger);color:var(--bg)}.btn-incorrect:hover:not(:disabled){filter:brightness(1.1);box-shadow:0 4px 16px #e07c7c59}@media (max-width: 480px){.card{min-height:220px;padding:1rem}.card-actions{gap:.5rem}.card-actions .btn{min-width:140px;padding:1rem 1.5rem}.card-speaker{width:56px;height:56px;font-size:1.5rem}}:root{--dark-amethyst: #3c1642ff;--stormy-teal: #086375ff;--turquoise: #1dd3b0ff;--green-yellow: #affc41ff;--light-green: #b2ff9eff;--bg: var(--dark-amethyst);--surface: var(--stormy-teal);--card: #0a5460;--accent: var(--turquoise);--accent-dim: #17a890;--cta: var(--green-yellow);--cta-hover: var(--light-green);--cta-text: var(--dark-amethyst);--text: #e2f7f2;--text-muted: #7eb8b0;--success: var(--light-green);--success-text: var(--dark-amethyst);--danger: #e07c7c;--radius: 1rem;--shadow: 0 8px 32px rgba(0, 0, 0, .4);--safe-top: env(safe-area-inset-top, 0);--safe-bottom: env(safe-area-inset-bottom, 0)}*{box-sizing:border-box}html{font-size:clamp(14px,2.5vw,18px);-webkit-tap-highlight-color:transparent}body{margin:0;min-height:100dvh;font-family:Outfit,system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;padding:var(--safe-top) 0 var(--safe-bottom);overflow-x:hidden}#root{min-height:100dvh;display:flex;flex-direction:column;align-items:center;padding:.75rem;width:100%;max-width:100%;box-sizing:border-box}@media (min-width: 480px){#root{padding:1rem}}@media (min-width: 768px){#root{padding:1.5rem}}button{font-family:inherit;font-size:1rem;cursor:pointer;border:none;border-radius:var(--radius);padding:.75rem 1.25rem;transition:transform .1s,box-shadow .2s}button:active{transform:scale(.98)}button:disabled{opacity:.6;cursor:not-allowed;transform:none}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible{outline:2px solid var(--cta);outline-offset:2px}