@import"https://fonts.googleapis.com/css2?family=Unbounded:wght@400;600;700&family=Inter:wght@400;500;600&display=swap";:root{--bg: #0a0f1e;--surface: #111827;--surface2: #1a2236;--border: #1e2d45;--accent: #3b82f6;--accent2: #06b6d4;--gold: #f59e0b;--green: #10b981;--red: #ef4444;--text: #f1f5f9;--text2: #94a3b8;--text3: #475569;--font-head: "Unbounded", sans-serif;--font-body: "Inter", sans-serif;--radius: 16px;--radius-sm: 10px}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:var(--bg);color:var(--text);font-family:var(--font-body);-webkit-font-smoothing:antialiased;overflow-x:hidden}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:16px;color:var(--text2)}.loader-ring{width:48px;height:48px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.screen{min-height:100vh;padding:0 0 80px;position:relative}.app-header{display:flex;align-items:center;justify-content:space-between;padding:20px 20px 16px;border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:10}.app-header h1{font-family:var(--font-head);font-size:16px;font-weight:700;color:var(--text);letter-spacing:-.3px}.header-badge{background:var(--surface2);border:1px solid var(--border);border-radius:20px;padding:4px 12px;font-size:12px;color:var(--text2)}.auth-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px 24px;text-align:center;background:var(--bg);position:relative;overflow:hidden}.auth-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at 50% 0%,rgba(59,130,246,.12) 0%,transparent 70%);pointer-events:none}.auth-logo{width:80px;height:80px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:24px;display:flex;align-items:center;justify-content:center;font-size:36px;margin-bottom:28px;box-shadow:0 0 40px #3b82f64d;animation:pulse-glow 3s ease-in-out infinite}@keyframes pulse-glow{0%,to{box-shadow:0 0 40px #3b82f64d}50%{box-shadow:0 0 60px #3b82f680}}.auth-title{font-family:var(--font-head);font-size:24px;font-weight:700;margin-bottom:12px;background:linear-gradient(135deg,#fff 0%,var(--accent2) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.auth-subtitle{font-size:14px;color:var(--text2);line-height:1.6;max-width:280px;margin:0 auto 32px}.auth-input{width:100%;max-width:320px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;color:var(--text);font-size:15px;font-family:var(--font-body);outline:none;margin-bottom:12px;transition:border-color .2s}.auth-input:focus{border-color:var(--accent)}.auth-input::placeholder{color:var(--text3)}.auth-error{color:var(--red);font-size:13px;margin-bottom:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border-radius:var(--radius-sm);border:none;cursor:pointer;font-family:var(--font-body);font-size:15px;font-weight:600;transition:all .2s;text-decoration:none}.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;width:100%;max-width:320px}.btn-primary:hover:not(:disabled){opacity:.9;transform:translateY(-1px)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border)}.btn-danger{background:#ef444426;color:var(--red);border:1px solid rgba(239,68,68,.3)}.home-hero{padding:24px 20px 20px;background:linear-gradient(180deg,rgba(59,130,246,.06) 0%,transparent 100%);border-bottom:1px solid var(--border)}.home-greeting{font-size:13px;color:var(--text2);margin-bottom:4px}.home-name{font-family:var(--font-head);font-size:22px;font-weight:700;margin-bottom:20px}.progress-bar-wrap{background:var(--surface2);border-radius:20px;height:8px;overflow:hidden;margin-bottom:6px}.progress-bar-fill{height:100%;border-radius:20px;background:linear-gradient(90deg,var(--accent),var(--accent2));transition:width .6s ease}.progress-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text2)}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:16px 20px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 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p{font-size:13px;color:var(--text2);margin-bottom:16px}.comp-banner{margin:0 20px 20px;background:linear-gradient(135deg,#10b9811a,#06b6d40d);border:1px solid rgba(16,185,129,.3);border-radius:var(--radius);padding:20px}.comp-banner h3{font-family:var(--font-head);font-size:15px;color:var(--green);margin-bottom:8px}.comp-row{display:flex;align-items:center;gap:8px;margin-bottom:6px;font-size:13px;color:var(--text2)}.comp-check{color:var(--green)}.comp-x{color:var(--red)}.lesson-screen{min-height:100vh;display:flex;flex-direction:column}.lesson-header{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:10}.back-btn{width:36px;height:36px;background:var(--surface);border:1px solid var(--border);border-radius:10px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:18px;color:var(--text);text-decoration:none}.lesson-header-info{flex:1}.lesson-header-num{font-size:11px;color:var(--text3)}.lesson-header-title{font-size:15px;font-weight:600}.lesson-content{flex:1;padding:24px 20px;overflow-y:auto;line-height:1.7;font-size:15px;color:var(--text)}.lesson-content h1,.lesson-content h2,.lesson-content h3{font-family:var(--font-head);margin:20px 0 10px}.lesson-content h1{font-size:22px}.lesson-content h2{font-size:18px;color:var(--accent2)}.lesson-content h3{font-size:15px}.lesson-content p{margin-bottom:12px}.lesson-content ul,.lesson-content ol{padding-left:20px;margin-bottom:12px}.lesson-content li{margin-bottom:6px}.lesson-content strong{color:var(--accent2)}.lesson-content blockquote{border-left:3px solid var(--accent);padding:12px 16px;background:var(--surface);border-radius:0 8px 8px 0;margin:16px 0;color:var(--text2);font-style:italic}.lesson-footer{padding:16px 20px;border-top:1px solid var(--border);background:var(--bg);position:sticky;bottom:0}.quiz-screen{min-height:100vh;display:flex;flex-direction:column}.quiz-header{padding:16px 20px;border-bottom:1px solid var(--border)}.quiz-progress-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.quiz-num{font-family:var(--font-head);font-size:13px;color:var(--text2)}.quiz-score-live{font-size:13px;color:var(--gold);font-weight:600}.quiz-body{flex:1;padding:24px 20px;overflow-y:auto}.quiz-question{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:24px;color:var(--text)}.quiz-options{display:flex;flex-direction:column;gap:10px}.quiz-option{background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-sm);padding:16px;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:14px;font-size:14px;color:var(--text);text-align:left}.quiz-option:hover{border-color:var(--accent)}.quiz-option.selected{border-color:var(--accent);background:#3b82f61a}.quiz-option.correct{border-color:var(--green);background:#10b9811a;color:var(--green)}.quiz-option.wrong{border-color:var(--red);background:#ef44441a;color:var(--red)}.option-letter{width:32px;height:32px;border-radius:50%;background:var(--surface2);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}.quiz-option.selected .option-letter{background:var(--accent);color:#fff}.quiz-option.correct .option-letter{background:var(--green);color:#fff}.quiz-option.wrong .option-letter{background:var(--red);color:#fff}.quiz-footer{padding:16px 20px;border-top:1px solid var(--border);background:var(--bg)}.result-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:40px 20px;text-align:center}.result-emoji{font-size:72px;margin-bottom:20px;animation:bounce-in .5s cubic-bezier(.34,1.56,.64,1)}@keyframes bounce-in{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.result-title{font-family:var(--font-head);font-size:26px;font-weight:700;margin-bottom:8px;background:linear-gradient(135deg,#fff,var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.result-subtitle{font-size:14px;color:var(--text2);margin-bottom:32px}.result-score-card{width:100%;max-width:340px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:20px}.score-big{font-family:var(--font-head);font-size:48px;font-weight:700;color:var(--gold);margin-bottom:4px}.score-max{font-size:14px;color:var(--text2);margin-bottom:20px}.score-divider{height:1px;background:var(--border);margin:16px 0}.compensation-amount{font-family:var(--font-head);font-size:28px;font-weight:700;color:var(--green);margin-bottom:4px}.compensation-label{font-size:12px;color:var(--text2)}.result-conditions{width:100%;max-width:340px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:left;margin-bottom:24px}.result-conditions h4{font-family:var(--font-head);font-size:13px;color:var(--text2);margin-bottom:14px}.cond-row{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:13px}.cond-icon{font-size:16px}.cond-ok{color:var(--green)}.cond-fail{color:var(--red)}.admin-tabs{display:flex;border-bottom:1px solid var(--border);overflow-x:auto;background:var(--bg);position:sticky;top:0;z-index:10}.admin-tab{padding:14px 20px;font-size:13px;font-weight:600;color:var(--text3);cursor:pointer;border-bottom:2px solid transparent;white-space:nowrap;transition:all .2s}.admin-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.admin-section{padding:16px 20px}.data-table{width:100%;border-collapse:collapse;font-size:13px}.data-table th{text-align:left;padding:10px 12px;color:var(--text3);font-weight:600;text-transform:uppercase;font-size:11px;border-bottom:1px solid var(--border)}.data-table td{padding:12px;border-bottom:1px solid var(--border);color:var(--text);vertical-align:middle}.data-table tr:last-child td{border-bottom:none}.tag{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600}.tag-green{background:#10b98126;color:var(--green)}.tag-blue{background:#3b82f626;color:var(--accent)}.tag-red{background:#ef444426;color:var(--red)}.tag-gray{background:var(--surface2);color:var(--text2)}.form-group{margin-bottom:16px}.form-label{font-size:12px;color:var(--text2);margin-bottom:6px;display:block;text-transform:uppercase;letter-spacing:.5px}.form-input,.form-textarea,.form-select{width:100%;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;color:var(--text);font-size:14px;font-family:var(--font-body);outline:none;transition:border-color .2s}.form-input:focus,.form-textarea:focus,.form-select:focus{border-color:var(--accent)}.form-textarea{min-height:120px;resize:vertical}.form-select{-webkit-appearance:none;-moz-appearance:none;appearance:none}.invite-link-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;word-break:break-all;font-size:13px;color:var(--accent2);margin-top:12px;cursor:pointer;transition:border-color .2s}.invite-link-box:hover{border-color:var(--accent2)}.copy-hint{font-size:11px;color:var(--text3);margin-top:6px}.toast{position:fixed;bottom:80px;left:50%;transform:translate(-50%);background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 20px;font-size:14px;color:var(--text);z-index:9999;animation:toast-in .3s ease;white-space:nowrap}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:flex-end;z-index:100;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-sheet{width:100%;background:var(--surface);border-radius:20px 20px 0 0;padding:24px 20px;border:1px solid var(--border);max-height:80vh;overflow-y:auto}.modal-handle{width:40px;height:4px;background:var(--border);border-radius:2px;margin:0 auto 20px}.modal-title{font-family:var(--font-head);font-size:18px;font-weight:700;margin-bottom:20px}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:var(--bg);border-top:1px solid var(--border);display:flex;padding:0 0 env(safe-area-inset-bottom)}.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;padding:12px 0;cursor:pointer;font-size:10px;color:var(--text3);gap:4px;transition:color .2s;text-decoration:none}.nav-item.active{color:var(--accent)}.nav-icon{font-size:22px}.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.w-full{width:100%}.text-center{text-align:center}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-8{gap:8px}.gap-12{gap:12px}