*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #4f46e5;--primary-hover: #4338ca;--success: #10b981;--success-hover: #059669;--bg: #f8fafc;--card-bg: #ffffff;--text: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}.container{max-width:700px;margin:0 auto;padding:20px}.screen{animation:fadeIn .3s ease}.hidden{display:none!important}.loader-container{display:flex;justify-content:center;align-items:center;min-height:60vh}.loader{width:40px;height:40px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}#login-screen{text-align:center;padding-top:60px}#login-screen h1{font-size:2.5rem;margin-bottom:10px;color:var(--primary)}.login-form{background:var(--card-bg);border-radius:16px;padding:30px;max-width:400px;margin:0 auto;box-shadow:var(--shadow);text-align:left}.login-form h2{text-align:center;margin-bottom:25px;font-size:1.3rem}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:6px;font-weight:500;font-size:.9rem}.form-group input{width:100%;padding:12px 15px;border:2px solid var(--border);border-radius:10px;font-size:1rem;transition:border-color .2s}.form-group input:focus{outline:none;border-color:var(--primary)}.login-btn{width:100%;justify-content:center}.error-message{color:#ef4444;font-size:.9rem;text-align:center;margin-bottom:15px}#language-screen{text-align:center;padding-top:60px}#language-screen h1{font-size:2.5rem;margin-bottom:10px;color:var(--primary)}.subtitle{color:var(--text-muted);font-size:1.1rem;margin-bottom:50px}.language-selector{margin-bottom:30px}.language-selector h2{font-size:1.2rem;font-weight:500;margin-bottom:8px}.selector-hint{color:var(--text-muted);font-size:.9rem;margin-bottom:20px}.language-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;max-width:400px;margin:0 auto}.language-btn{display:flex;flex-direction:column;align-items:center;gap:10px;padding:25px 20px;border:2px solid var(--border);border-radius:16px;background:var(--card-bg);cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow)}.language-btn:hover{border-color:var(--primary);transform:translateY(-2px)}.language-btn.selected{border-color:var(--primary);background:#4f46e51a}.language-btn .flag{font-size:2.5rem}.language-btn .lang-name{font-size:1.1rem;font-weight:500}#main-screen header{display:flex;align-items:center;justify-content:space-between;margin-bottom:25px}#main-screen header h1{font-size:1.3rem;color:var(--primary)}.icon-btn{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;padding:8px 12px;font-size:1.2rem;cursor:pointer;transition:all .2s}.icon-btn:hover{background:var(--bg)}.current-lang{font-size:.85rem;color:var(--text-muted)}.lang-pair{font-size:1.2rem;background:var(--bg);padding:5px 12px;border-radius:20px}.progress-section{background:var(--card-bg);border-radius:12px;padding:15px 20px;margin-bottom:20px;box-shadow:var(--shadow)}.progress-info{display:flex;justify-content:space-between;font-size:.9rem;margin-bottom:10px}#progress-text{font-weight:600}#completed-count{color:var(--success)}.progress-bar{height:8px;background:var(--bg);border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--success));border-radius:4px;transition:width .3s ease;width:0%}.day-navigation{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.nav-btn{background:var(--card-bg);border:1px solid var(--border);border-radius:8px;padding:8px 16px;font-size:.9rem;cursor:pointer;transition:all .2s}.nav-btn:hover:not(:disabled){background:var(--bg);border-color:var(--primary)}.nav-btn:disabled{opacity:.4;cursor:not-allowed}#viewing-day{font-weight:600;color:var(--primary)}.day-content{background:var(--card-bg);border-radius:16px;padding:25px;margin-bottom:25px;box-shadow:var(--shadow)}.day-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.theme-badge{background:var(--primary);color:#fff;padding:4px 12px;border-radius:20px;font-size:.8rem;font-weight:500}.duration{color:var(--text-muted);font-size:.9rem}#day-title{font-size:1.4rem;margin-bottom:20px;color:var(--text)}.instructions{background:linear-gradient(135deg,#4f46e51a,#10b9811a);border-radius:12px;padding:15px 20px;margin-bottom:20px;font-size:.9rem;overflow:visible;word-wrap:break-word}.instructions p{margin-bottom:10px}.instructions ol{margin-left:20px;color:var(--text-muted);padding-left:0}.instructions li{margin-bottom:5px;line-height:1.5}.text-content{background:var(--bg);border-radius:12px;padding:20px;margin-bottom:20px;font-size:1.1rem;line-height:1.8;white-space:pre-wrap}.actions{display:flex;justify-content:center;gap:15px;flex-wrap:wrap}.primary-btn{display:flex;align-items:center;gap:8px;background:var(--primary);color:#fff;border:none;border-radius:10px;padding:12px 24px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s}.primary-btn:hover{background:var(--primary-hover);transform:translateY(-1px)}.primary-btn.done{background:var(--success)}.primary-btn.done:hover{background:var(--success-hover)}.btn-icon{font-size:1.1rem}.record-btn{background:#ef4444}.record-btn:hover{background:#dc2626}.record-btn.recording{animation:pulse-recording 1s ease-in-out infinite}@keyframes pulse-recording{0%,to{opacity:1}50%{opacity:.7}}.record-btn.uploading{background:var(--text-muted);cursor:wait}.fluency-result{margin-top:20px;padding:20px;background:var(--bg);border-radius:12px;border-left:4px solid var(--primary)}.fluency-result h3{font-size:1rem;margin-bottom:15px;color:var(--primary)}.fluency-score{display:flex;align-items:center;gap:10px;margin-bottom:10px}.fluency-score-value{font-size:2rem;font-weight:700;color:var(--success)}.fluency-details{font-size:.9rem;color:var(--text-muted);line-height:1.6}.days-overview{background:var(--card-bg);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.days-overview h3{font-size:1rem;margin-bottom:15px;color:var(--text-muted)}.days-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:8px}.day-dot{aspect-ratio:1;border-radius:8px;background:var(--bg);border:2px solid var(--border);cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:600;color:var(--text-muted)}.day-dot:hover{border-color:var(--primary);transform:scale(1.1)}.day-dot.completed{background:var(--success);border-color:var(--success);color:#fff}.day-dot.current{border-color:var(--primary);background:#4f46e51a;color:var(--primary)}@media(max-width:500px){.container{padding:15px}#language-screen h1{font-size:2rem}.language-grid{grid-template-columns:repeat(2,1fr);gap:10px}.language-btn{padding:20px 15px}.days-grid{grid-template-columns:repeat(6,1fr)}.day-content{padding:20px}.text-content{font-size:1rem;padding:15px}}