:root{color:#2b2b2b;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:radial-gradient(circle at 0 0,#ffd6aab8,#0000 28%),radial-gradient(circle at 100% 0,#bee9e8a6,#0000 24%),linear-gradient(#fffaf4 0%,#fff3e6 100%);font-family:Avenir Next,Trebuchet MS,Gill Sans,sans-serif;font-weight:400;line-height:1.45}*{box-sizing:border-box}html,body,#root{min-height:100%}body{min-height:100vh;margin:0}a{color:inherit}button,input{font:inherit}:root{--bg:#fff8ec;--bg-soft:#fdf1d8;--paper:#fff;--ink:#1f2742;--muted:#6b7393;--primary:#5b8def;--primary-strong:#3a6cd6;--accent:#ffb347;--accent-soft:#fff2dc;--highlight:#ffe66d;--berry:#b56cf0;--success:#06d6a0;--error:#ef476f;--line:#1f27421a;--shadow-sm:0 4px 12px #3a6cd614;--shadow-md:0 12px 28px #3a6cd61f;--shadow-lg:0 18px 40px #3a6cd626;--radius-xl:32px;--radius-lg:24px;--radius-md:18px;--radius-sm:12px;--radius-pill:999px;--font-display:"Fredoka", system-ui, sans-serif;--font-body:"Nunito", system-ui, sans-serif}.app-shell{background:linear-gradient(135deg, var(--bg), var(--bg-soft));min-height:100vh;padding:32px 0;position:relative;overflow:hidden}.app-shell:before{content:"";background:radial-gradient(circle, var(--accent-soft), transparent 70%);opacity:.4;pointer-events:none;z-index:0;width:400px;height:400px;position:absolute;top:-100px;right:-100px}.topbar-container{z-index:1;width:min(1180px,100vw - 32px);margin:0 auto 32px;position:relative}.topbar-pill{background:var(--paper);border-radius:var(--radius-pill);box-shadow:var(--shadow-sm);border:1px solid var(--line);justify-content:space-between;align-items:center;padding:8px 24px;display:flex}.user-profile{align-items:center;gap:12px;display:flex}.avatar{background:var(--accent);border:2px solid 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button:hover{transform:translateY(-1px)}.ghost-button,.text-link,.mode-switch button,.option-button{color:var(--ink);background:#ffffffb8;border-color:#2f241c1f}.text-link{min-height:auto;padding:10px 14px}.mode-switch{background:#ff885b1a;border-radius:22px;padding:6px}.mode-switch button{flex:1}.mode-active{background:var(--paper-strong)!important;color:var(--accent-strong)!important;border-color:#ff6f3c47!important}.wide{width:100%}.auth-panel,.launch-panel{padding:28px}.form-grid{gap:16px;margin:22px 0 16px;display:grid}.form-grid label{color:var(--ink);gap:8px;font-weight:600;display:grid}.form-grid input,.answer-input{background:#fffffff0;border:2px solid #2f241c1f;border-radius:18px;width:100%;min-height:58px;padding:14px 18px;font-size:1.05rem}.hero-card{background:linear-gradient(135deg, #ef7f4629, #1e8f8814), var(--paper);position:relative;overflow:hidden}.hero-card:after{content:"";pointer-events:none;background:radial-gradient(circle,#ffffffb3,#0000 72%);border-radius:50%;width:180px;height:180px;position:absolute;inset:auto -40px -40px auto}.stats-card{place-items:center;display:grid}.stat-grid{grid-template-columns:repeat(2,minmax(120px,1fr));gap:18px;width:100%;display:grid}.stat-grid div{text-align:center;background:#ffffffbd;border:1px solid #2f241c14;border-radius:20px;padding:18px}.stat-grid strong{color:var(--ink);font-size:2rem;display:block}.stat-grid span{color:var(--muted)}.weak-panel,.side-panel,.exercise-panel,.explanation-panel{margin-top:20px}.mode-ribbon{flex-wrap:wrap;gap:12px;margin-top:18px;display:flex}.mode-ribbon-step{color:var(--muted);background:#ffffffa8;border:1px solid #2f241c14;border-radius:999px;padding:10px 14px;font-weight:700}.mode-ribbon-step.active{color:var(--ink);background:linear-gradient(135deg,#ef7f461f,#1e8f881f);border-color:#ef7f4638}.mode-sidecard{position:sticky;top:20px}.plain-list{color:var(--muted);gap:10px;margin:16px 0 0;padding-left:18px;display:grid}.tramo-map{gap:18px;margin-top:22px;display:grid}.tramo-card.current{border-color:#ff6f3c5c}.tramo-card.completed{background:linear-gradient(135deg,#2f9b6314,#ffffffeb)}.tramo-card.locked{opacity:.7}.status-pill,.difficulty-chip,.xp-pill,.hint-chip,.subtema-chip{border-radius:999px;align-items:center;gap:8px;padding:8px 12px;display:inline-flex}.status-pill,.difficulty-chip{color:var(--teal);background:#2d9c951f;font-weight:700}.subtema-cloud{flex-wrap:wrap;gap:10px;margin-top:18px;display:flex}.subtema-chip{color:var(--ink);background:#ffffffd6;border:1px solid #2f241c14;justify-content:space-between;min-height:44px;text-decoration:none}.subtema-chip.debil{background:#d454421f}.subtema-chip.en_desarrollo{background:#ffb84d24}.subtema-chip.logrado{background:#2d9c951f}.subtema-chip.dominado{background:#2f9b6324}.mastery-block{gap:10px;display:grid}.mastery-copy strong{color:var(--ink)}.mastery-track{background:#2f241c14;border-radius:999px;width:100%;height:12px;overflow:hidden}.mastery-fill{border-radius:inherit;background:linear-gradient(90deg, var(--accent) 0%, var(--teal) 100%);height:100%}.worked-example{background:linear-gradient(135deg,#fff9f0f5,#ffffffd6);border:1px solid #ff885b29;border-radius:18px;margin-top:18px;padding:16px}.exercise-panel h2{margin-bottom:18px;font-size:clamp(1.5rem,2.3vw,2.4rem);line-height:1.15}.exercise-kicker{color:var(--teal);margin-top:12px;font-size:.95rem;font-weight:700}.answer-label{color:var(--ink);gap:10px;margin-top:14px;font-weight:700;display:grid}.option-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-top:16px;display:grid}.option-button.active{background:#ff885b24;border-color:#ff6f3c57}.hint-stack{gap:10px;margin-top:18px;display:grid}.hint-chip{color:var(--ink);background:#2d9c951a}.feedback-banner{border:1px solid #0000;border-radius:22px;justify-content:space-between;align-items:center;gap:16px;margin:18px 0;padding:18px 20px;animation:.22s rise-in;display:flex}.feedback-banner.success{background:#2f9b631f;border-color:#2f9b633d}.feedback-banner.error{background:#d454421f;border-color:#d4544238}.mini-steps{gap:12px;margin-top:20px;display:grid}.mini-step{background:#ffffffa8;border:1px solid #2f241c14;border-radius:18px;grid-template-columns:40px 1fr;align-items:start;gap:12px;padding:14px 16px;display:grid}.mini-step strong{width:40px;height:40px;color:var(--accent-strong);background:#ef7f4629;border-radius:50%;place-items:center;display:grid}.diagnostic-progress{margin-top:18px}.diagnostic-progress-copy{justify-content:space-between;align-items:center;gap:16px;margin-bottom:12px;display:flex}.diagnostic-progress-copy span{color:var(--ink);font-size:1.4rem;font-weight:800}.mission-card{min-height:190px}.mission-card.warm{background:linear-gradient(160deg,#ef7f461f,#ffffffeb)}.mission-card.sand{background:linear-gradient(160deg,#f1bb4b24,#ffffffeb)}.mission-card.mint{background:linear-gradient(160deg,#1e8f881f,#ffffffeb)}.xp-pill{color:var(--ink);background:#fffc;font-weight:700}.muted{color:var(--muted)}.error-copy{color:var(--error);margin-top:12px}@keyframes rise-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (width<=960px){.auth-page,.hero-grid,.dual-grid,.mode-grid,.mission-grid{grid-template-columns:1fr}.page-shell,.auth-page{width:min(100vw - 20px,1180px)}.topbar,.mode-header,.section-head,.tramo-head,.exercise-topline,.hint-row{flex-direction:column;align-items:flex-start}.stat-grid{grid-template-columns:1fr 1fr}}