body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f8fafc}*{box-sizing:border-box}:root{--bg-1: #e8eef7;--bg-2: #dbe6f3;--ink: #1e293b;--muted: #64748b;--card: #ffffff;--line: #e2e8f0;--accent: #3b82f6;--accent-hover: #2563eb;--accent-soft: #eff6ff;--accent-2: #f59e0b;--shadow: rgba(15, 23, 42, .12)}.App{min-height:100vh;color:var(--ink);background-color:var(--bg-1)}.App-shell{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:1.5rem;background:linear-gradient(135deg,var(--bg-1) 0%,var(--bg-2) 100%);position:relative}.app-stage{width:min(760px,100%);display:flex;flex-direction:column}.app-toolbar{position:absolute;top:1rem;right:1rem;display:flex;align-items:center;gap:.3rem;color:var(--muted);padding:0}.app-language-label{font-size:.85rem;color:var(--muted)}.app-language-select{border:none;background:transparent;color:var(--muted);font-size:.85rem;font-weight:500;padding:.1rem 1rem .1rem .1rem;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%2364748b' d='M5 6L0 0h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .1rem center;cursor:pointer;transition:color .15s ease}.app-language-select:hover,.app-language-select:focus-visible{color:var(--ink);outline:none}.card{width:min(760px,100%);background:#fff;border-radius:16px;box-shadow:0 16px 36px -20px var(--shadow),0 8px 18px -16px var(--shadow);padding:2rem 1.75rem;display:flex;flex-direction:column;gap:1.6rem;animation:slide-up .4s cubic-bezier(.16,1,.3,1);border:1px solid #d7e1ee;transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease}.card-feedback-correct{background:#f0fff4;border-color:#86efac;box-shadow:0 16px 36px -20px #16a34a40,0 8px 18px -16px #16a34a33}.card-feedback-wrong{background:#fff1f2;border-color:#fda4af;box-shadow:0 16px 36px -20px #e11d4840,0 8px 18px -16px #e11d4833}.card-head{display:flex;justify-content:space-between;align-items:center;gap:.5rem;padding-bottom:.55rem;border-bottom:1px dashed rgba(48,54,54,.3)}.card-title{margin:0;font-size:clamp(1.3rem,2.2vw,1.7rem);letter-spacing:.01em}.card-subtitle{margin:-.2rem 0 .1rem;color:var(--muted);font-size:.95rem}.selector-grid,.controls-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.65rem}.control-row{display:flex;align-items:center;justify-content:space-between;gap:.5rem;color:var(--muted);border:1px solid rgba(48,54,54,.18);border-radius:12px;padding:.55rem .65rem;background:#fffdfa}.select,.text-input{border:1px solid var(--line);border-radius:8px;background:#fff;padding:.6rem .8rem;font-size:1rem;transition:border-color .15s ease,box-shadow .15s ease}.text-input{width:100%;font-size:1.75rem;text-align:center;letter-spacing:.05em;font-weight:600;color:var(--ink)}.text-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #3b82f61a;outline:none}.quiz-head{display:grid;grid-template-columns:1fr auto;align-items:center;gap:.7rem}.quiz-body{display:flex;flex-direction:column;align-items:center;gap:1.15rem;text-align:center}.typed-wrap{width:min(420px,100%);display:flex;flex-direction:column;gap:.55rem}.primary-btn,.secondary-btn,.option-btn,.answer-btn,.hint-btn,.icon-btn{border:1px solid var(--line);border-radius:10px;padding:.6rem 1rem;background:#fff;color:var(--ink);cursor:pointer;font-weight:500;transition:all .15s ease}.primary-btn{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600}.primary-btn:hover{background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #3b82f640}.wide-btn{width:100%}.secondary-btn{background:var(--bg-2);border-color:var(--line)}.secondary-btn:hover{background:#e2e8f0}.option-btn{font-size:1.1rem;font-weight:600;min-height:56px}.option-btn.is-selected{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.step-actions{display:flex;justify-content:space-between;gap:.65rem}.icon-btn{align-self:flex-start;font-size:.85rem;font-weight:500;margin:0 0 .4rem;border:none;background:transparent;color:var(--muted);padding:0}.icon-btn:hover{color:var(--ink);background:transparent;box-shadow:none;transform:none}.answers-grid,.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.9rem}.answers-grid{width:min(640px,100%)}.answer-btn{width:100%;padding:1rem 2rem;font-size:1.05rem;min-height:68px;border-radius:12px;font-weight:600;border-color:#c8d5e7;background:#f8fbff}.prompt-letter{margin:.5rem 0 2.25rem;font-size:clamp(3rem,12vw,6rem);font-weight:800;letter-spacing:-.02em;line-height:1;color:var(--ink)}.hint-btn{font-size:.9rem;background:#f3f8ff;border:1px solid #bfd3ee;color:var(--accent);text-decoration:none;padding:.5rem .9rem;border-radius:999px;font-weight:600}.hint-btn:hover{color:var(--accent-hover);background:#e6f0ff;border-color:#9dbde8;transform:translateY(-1px);box-shadow:0 5px 10px #3b82f61f}.progress{width:100%;height:6px;border-radius:999px;overflow:hidden;-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:#bfd0e5}.progress::-webkit-progress-bar{background:#bfd0e5;border-radius:999px}.progress::-webkit-progress-value{background:#16a3a0;border-radius:999px}.progress::-moz-progress-bar{background:#16a3a0;border-radius:999px}.timer{margin:0;font-weight:700;color:var(--accent-2)}.help-line{margin:0;font-weight:700;color:var(--accent);font-size:.96rem}.hint-slot{min-height:2.25rem;width:100%;display:flex;justify-content:center;align-items:center}.feedback-line,.success-line{margin:0;font-weight:700}.feedback-slot{min-height:1.5rem;width:100%;display:flex;justify-content:center;align-items:center}.feedback-line{opacity:0;transition:opacity .12s ease}.feedback-line.is-visible{opacity:1}.stat-tile{margin:0;border:1px solid rgba(48,54,54,.2);border-radius:12px;padding:.45rem .55rem;background:#fffef9;display:flex;justify-content:space-between;gap:.55rem}.stat-tile span{color:var(--muted)}.stat-tile strong{font-size:1.03rem}.warning-line{margin:0;font-weight:700;color:#b45309;grid-column:1 / -1;text-align:center}button:hover{transform:translateY(-1px)}button:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button:disabled{opacity:.45;cursor:not-allowed;transform:none}@keyframes slide-up{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 640px){.app-toolbar{position:static;margin-bottom:.8rem;align-self:flex-end;justify-content:flex-end}.selector-grid,.controls-grid,.answers-grid,.stats-grid{grid-template-columns:1fr}.quiz-head{grid-template-columns:1fr;justify-items:center}}