:root{--color-bg: #faf7f2;--color-surface: #ffffff;--color-text: #2b2118;--color-muted: #6b5d4f;--color-primary: #c2410c;--color-primary-dark: #9a3412;--color-accent: #0e7490;--color-success: #15803d;--color-success-bg: #dcfce7;--color-error: #b91c1c;--color-error-bg: #fee2e2;--color-warning-bg: #fef3c7;--color-border: #e5ddd0;--color-locked: #f0ece4;--radius: 12px;--shadow: 0 1px 3px rgba(43, 33, 24, .12);--focus-ring: 3px solid #1d4ed8}*{box-sizing:border-box}html{font-size:16px}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.55}.hindi-text{font-size:1.125rem;letter-spacing:.01em}a:focus-visible,button:focus-visible,input:focus-visible{outline:var(--focus-ring);outline-offset:2px}.skip-link{position:absolute;left:-9999px;top:0;background:var(--color-primary);color:#fff;padding:.5rem 1rem;z-index:100}.skip-link:focus{left:0}.app-header{background:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:20}.header-inner{max-width:1024px;margin:0 auto;padding:.5rem 1rem;display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.logo{font-weight:700;font-size:1.15rem;text-decoration:none;color:var(--color-primary-dark)}.main-nav{display:flex;gap:.25rem;flex-wrap:wrap;flex:1}.main-nav a{text-decoration:none;color:var(--color-text);padding:.4rem .7rem;border-radius:8px}.main-nav a:hover{background:var(--color-locked)}.main-nav a.active{background:var(--color-primary);color:#fff}.header-streak{font-weight:700;font-size:1.05rem;white-space:nowrap}.page{max-width:1024px;margin:0 auto;padding:1rem}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1rem 1.25rem;margin:.75rem 0}h1{font-size:1.6rem;margin:.5rem 0}h2{font-size:1.25rem;margin-top:.25rem}h3{font-size:1.05rem}.muted{color:var(--color-muted)}.small{font-size:.9rem}.warning{color:var(--color-error);font-weight:600}.warning-card{background:var(--color-warning-bg)}.btn{display:inline-block;background:var(--color-surface);border:1px solid var(--color-border);border-radius:10px;padding:.55rem 1rem;font-size:1rem;color:var(--color-text);cursor:pointer;text-decoration:none;text-align:center}.btn:hover:not(:disabled){border-color:var(--color-primary)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--color-primary);border-color:var(--color-primary);color:#fff;font-weight:600}.btn-primary:hover:not(:disabled){background:var(--color-primary-dark)}.btn-big{font-size:1.1rem;padding:.75rem 1.5rem}.btn-small{padding:.3rem .7rem;font-size:.9rem}.btn-row{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.75rem}.streak-banner{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.flame{font-size:2.4rem}.streak-count{font-size:1.3rem;font-weight:700;margin:0}.streak-banner .btn{margin-left:auto}.overall-progress{display:flex;align-items:baseline;gap:.75rem;flex-wrap:wrap;margin-bottom:.75rem}.overall-number{font-size:2.2rem;font-weight:800;color:var(--color-primary-dark)}.progress-row{margin:.6rem 0}.progress-label{display:flex;justify-content:space-between;font-size:.95rem;margin-bottom:.2rem}.progress-value{font-weight:600}.progress-track{background:var(--color-locked);border-radius:999px;height:12px;overflow:hidden}.progress-fill{background:linear-gradient(90deg,var(--color-primary),var(--color-accent));height:100%;border-radius:999px;transition:width .4s ease}.path-list{list-style:none;padding:0;margin:0}.path-item{padding:.45rem .25rem;border-bottom:1px dashed var(--color-border)}.path-item:last-child{border-bottom:none}.path-item a{color:var(--color-text);text-decoration:none}.path-item a:hover{text-decoration:underline}.path-item.current{background:var(--color-warning-bg);border-radius:8px}.level-grid{display:grid;grid-template-columns:1fr;gap:.75rem}.level-card.locked,.module-card.locked,.lesson-card.locked{background:var(--color-locked);opacity:.85}.module-card{display:flex;gap:1rem;align-items:center;flex-wrap:wrap}.module-card-main{flex:1;min-width:220px}.module-card-actions{display:flex;flex-direction:column;gap:.5rem;align-items:stretch}.lesson-grid{display:grid;grid-template-columns:1fr;gap:.75rem}.lesson-card{display:block;text-decoration:none;color:var(--color-text)}.lesson-card.available:hover{border-color:var(--color-primary)}.lesson-card-top{display:flex;justify-content:space-between;align-items:center;gap:.5rem}.lesson-card-title{margin:.4rem 0 .2rem}.lesson-card-desc{margin:0;color:var(--color-muted)}.lesson-score{color:var(--color-success);font-weight:700}.badge{font-size:.8rem;font-weight:700;padding:.15rem .6rem;border-radius:999px;color:#fff}.badge-vocabulary{background:#c2410c}.badge-grammar{background:#0e7490}.badge-listening{background:#7c3aed}.badge-speaking{background:#15803d}.vocab-list,.example-list,.topic-list,.achievement-list{list-style:none;padding:0;margin:0}.vocab-item,.example-item{display:flex;gap:.6rem;align-items:flex-start;padding:.5rem 0;border-bottom:1px dashed var(--color-border)}.vocab-item:last-child,.example-item:last-child{border-bottom:none}.vocab-word{font-weight:700}.example-item{display:block;padding:.55rem 0}.topic-list li{padding:.4rem 0}.topic-link{color:var(--color-text);text-decoration:none}.topic-link:hover strong{text-decoration:underline;color:var(--color-primary-dark)}.grammar-step{margin-bottom:.75rem}.phonetic{font-style:italic;color:var(--color-muted)}.audio-btn{background:none;border:1px solid var(--color-border);border-radius:8px;cursor:pointer;font-size:1rem;padding:.25rem .5rem}.audio-btn:hover:not(:disabled){border-color:var(--color-accent)}.audio-btn:disabled{opacity:.5;cursor:not-allowed}.audio-note{font-size:.85rem;color:var(--color-muted);margin-left:.3rem}.exercise-card{padding:1.25rem}.exercise-prompt{font-size:1.15rem;font-weight:600}.mc-options{display:grid;grid-template-columns:1fr;gap:.5rem}.mc-option{text-align:left;font-size:1.05rem}.mc-correct{background:var(--color-success-bg);border-color:var(--color-success)}.mc-wrong{background:var(--color-error-bg);border-color:var(--color-error)}.blank-input,.text-input{font-size:1.125rem;padding:.45rem .6rem;border:2px solid var(--color-border);border-radius:8px;margin:0 .25rem}.blank-input{width:9rem}.text-input{display:block;width:100%;max-width:420px;margin:.5rem 0}.blank-input:focus,.text-input:focus{border-color:var(--color-accent)}.matching-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.matching-col{display:flex;flex-direction:column;gap:.5rem}.match-item.selected{border-color:var(--color-accent);background:#ecfeff}.match-item.matched{background:var(--color-success-bg);border-color:var(--color-success)}.match-item.shake{animation:shake .35s;border-color:var(--color-error)}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.feedback{margin-top:1rem;padding:.9rem 1rem;border-radius:10px}.feedback-correct{background:var(--color-success-bg);border:1px solid var(--color-success)}.feedback-wrong{background:var(--color-error-bg);border:1px solid var(--color-error)}.feedback-title{font-weight:700;margin-top:0}.result-card{text-align:center}.result-card.pass{border-color:var(--color-success)}.result-card.fail{border-color:var(--color-error)}.result-card ul{text-align:left;display:inline-block}.timer{font-size:1.3rem;font-weight:700;background:var(--color-surface);border:1px solid var(--color-border);border-radius:10px;padding:.4rem .9rem;display:inline-block;position:sticky;top:3.5rem;z-index:10}.timer-warning{color:var(--color-error);border-color:var(--color-error);background:var(--color-error-bg)}.achievement-list{display:flex;flex-direction:column;gap:.6rem}.achievement-item{display:flex;gap:.7rem;align-items:flex-start;padding:.6rem;border:1px solid var(--color-border);border-radius:10px}.achievement-item.earned{background:var(--color-success-bg)}.achievement-item.locked{background:var(--color-locked)}.achievement-item p{margin:.15rem 0}.achievement-overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:flex-start;justify-content:center;padding-top:4rem;background:#2b211859;z-index:50}.achievement-toast{background:var(--color-surface);border:2px solid var(--color-primary);border-radius:var(--radius);box-shadow:0 8px 30px #2b211859;padding:1.25rem;display:flex;gap:1rem;align-items:flex-start;max-width:480px;margin:0 1rem}.achievement-toast .achievement-icon{font-size:2.2rem}.achievement-toast p{margin:.15rem 0}.achievement-title{font-weight:800;color:var(--color-primary-dark)}.achievement-name{font-size:1.15rem;font-weight:700}@media (min-width: 480px){.lesson-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width: 768px){html{font-size:17px}.level-grid{grid-template-columns:repeat(3,1fr)}.mc-options{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1024px){html{font-size:18px}.lesson-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 380px){.matching-grid{grid-template-columns:1fr}.header-inner{justify-content:center}}@media (prefers-reduced-motion: reduce){.progress-fill{transition:none}.match-item.shake{animation:none}}