*{box-sizing:border-box;margin:0;padding:0}:root{--primary:#7c6fff;--primary-light:#9b90ff;--primary-dark:#5a4fcc;--secondary:#43d9a2;--danger:#ff6b8a;--warning:#ffb547;--info:#4fc3f7;--bg:#0a0a14;--bg2:#0f0f1e;--card-bg:#161628;--card-hover:#1e1e35;--text:#f0f0ff;--text-muted:#7070a0;--text-dim:#404070;--border:#252540;--border-light:#303050;--shadow:0 8px 32px #0006;--shadow-sm:0 4px 16px #0000004d;--radius:16px;--radius-sm:10px;--radius-lg:24px}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;overflow-x:hidden}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:var(--bg2)}::-webkit-scrollbar-thumb{background:var(--primary);border-radius:4px}.app{flex-direction:column;min-height:100vh;display:flex}.main-content{flex:1;padding-bottom:80px}.navbar{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid var(--border);z-index:100;background:#161628f2;padding:8px 0 12px;display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -4px 20px #0000004d}.nav-item{color:var(--text-dim);letter-spacing:.3px;flex-direction:column;flex:1;align-items:center;gap:3px;padding:4px;font-size:10px;font-weight:600;text-decoration:none;transition:all .3s;display:flex}.nav-item.active{color:var(--primary-light)}.nav-item.active span:first-child{filter:drop-shadow(0 0 8px var(--primary));transform:scale(1.2)}.page{max-width:500px;margin:0 auto;padding:16px}.page-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.page-header h2{background:linear-gradient(135deg, var(--text), var(--primary-light));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:22px;font-weight:800}.home-header{background:linear-gradient(135deg, var(--card-bg), var(--card-hover));border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow);justify-content:space-between;align-items:center;margin-bottom:24px;padding:20px;display:flex;position:relative;overflow:hidden}.home-header:before{content:"";background:radial-gradient(circle,#7c6fff26,#0000);border-radius:50%;width:200px;height:200px;position:absolute;top:-50%;right:-20%}.greeting{color:var(--text-muted);margin-bottom:4px;font-size:13px}.username{margin-bottom:8px;font-size:22px;font-weight:800}.role-badge{background:linear-gradient(135deg, var(--primary), var(--primary-dark));border-radius:20px;padding:5px 12px;font-size:12px;font-weight:600;display:inline-block;box-shadow:0 4px 12px #7c6fff4d}.avatar{background:linear-gradient(135deg, var(--primary), var(--primary-dark));border:2px solid #ffffff1a;border-radius:50%;justify-content:center;align-items:center;width:54px;height:54px;font-size:22px;font-weight:800;display:flex;box-shadow:0 4px 16px #7c6fff66}.cards-grid{grid-template-columns:1fr 1fr;gap:14px;display:grid}.card{background:var(--card-bg);border-radius:var(--radius);cursor:pointer;border:1px solid var(--border);box-shadow:var(--shadow-sm);flex-direction:column;align-items:center;gap:10px;padding:22px 16px;transition:all .3s;display:flex;position:relative;overflow:hidden}.card:after{content:"";pointer-events:none;background:linear-gradient(135deg,#0000,#ffffff08);position:absolute;inset:0}.card:active{transform:scale(.95)}.card:hover{background:var(--card-hover);border-color:var(--border-light)}.card-icon{filter:drop-shadow(0 4px 8px #0000004d);font-size:36px}.card-label{text-align:center;font-size:13px;font-weight:700}.btn-primary{background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;border-radius:var(--radius-sm);cursor:pointer;letter-spacing:.3px;border:none;width:100%;padding:14px 20px;font-size:15px;font-weight:700;transition:all .3s;box-shadow:0 4px 16px #7c6fff66}.btn-primary:active{transform:scale(.97)}.btn-add{background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;padding:8px 16px;font-size:13px;font-weight:700;transition:all .2s;box-shadow:0 4px 12px #7c6fff4d}.btn-delete{cursor:pointer;background:#ff6b8a1a;border:1px solid #ff6b8a33;border-radius:8px;padding:4px 8px;font-size:16px;transition:all .2s}.btn-delete:active{background:#ff6b8a33}.btn-done{background:linear-gradient(135deg, var(--secondary), #2ecc71);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;margin-top:10px;padding:10px 16px;font-size:13px;font-weight:700;box-shadow:0 4px 12px #43d9a24d}.btn-start{background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;border:none;padding:10px 18px;font-size:14px;font-weight:700;box-shadow:0 4px 12px #7c6fff4d}.btn-back{border:1px solid var(--border);color:var(--text);cursor:pointer;background:#ffffff0d;border-radius:10px;padding:6px 12px;font-size:18px;transition:all .2s}.btn-send{background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-size:18px;display:flex;box-shadow:0 4px 12px #7c6fff66}.form-card{background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm);flex-direction:column;gap:12px;margin-bottom:20px;padding:20px;display:flex}.form-card input,.form-card select,.form-card textarea{background:var(--bg2);border:1px solid var(--border);color:var(--text);border-radius:var(--radius-sm);outline:none;width:100%;padding:12px 16px;font-size:14px;transition:border-color .2s}.form-card input:focus,.form-card select:focus,.form-card textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #7c6fff26}.form-card select option{background:var(--card-bg)}.schedule-day{margin-bottom:20px}.day-title{color:var(--primary-light);text-transform:uppercase;letter-spacing:1.5px;align-items:center;gap:8px;margin-bottom:10px;font-size:12px;font-weight:800;display:flex}.day-title:after{content:"";background:var(--border);flex:1;height:1px}.schedule-item{background:var(--card-bg);border-radius:var(--radius-sm);border:1px solid var(--border);align-items:center;gap:14px;margin-bottom:8px;padding:14px 16px;transition:all .2s;display:flex}.schedule-item:hover{background:var(--card-hover)}.schedule-time{color:var(--primary-light);letter-spacing:.5px;min-width:52px;font-size:15px;font-weight:800}.schedule-info{flex:1}.subject{font-size:15px;font-weight:700;display:block}.room{color:var(--text-muted);margin-top:2px;font-size:12px}.task-card{background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);border-left:4px solid var(--secondary);box-shadow:var(--shadow-sm);margin-bottom:12px;padding:16px;transition:all .2s}.task-card:hover{background:var(--card-hover)}.task-card.overdue{border-left-color:var(--danger)}.task-header{justify-content:space-between;align-items:flex-start;gap:10px;display:flex}.task-header h3{font-size:15px;font-weight:700}.deadline{color:var(--text-muted);white-space:nowrap;font-size:11px}.overdue-text{color:var(--danger)}.task-desc{color:var(--text-muted);margin-top:8px;font-size:13px;line-height:1.5}.test-card{background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm);justify-content:space-between;align-items:center;margin-bottom:12px;padding:16px;transition:all .2s;display:flex}.test-card:hover{background:var(--card-hover)}.test-info h3{margin-bottom:4px;font-size:15px;font-weight:700}.test-info span{color:var(--text-muted);font-size:12px}.progress-bar{background:var(--border);border-radius:10px;height:6px;margin-top:8px;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--primary), var(--primary-light));border-radius:10px;height:100%;transition:width .5s}.question-card{background:var(--card-bg);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow);padding:24px}.question-text{color:var(--text);margin-bottom:24px;font-size:17px;font-weight:600;line-height:1.6}.options{flex-direction:column;gap:12px;display:flex}.option-btn{background:var(--bg2);border:1px solid var(--border);color:var(--text);border-radius:var(--radius-sm);text-align:left;cursor:pointer;align-items:center;gap:14px;padding:14px 16px;font-size:15px;font-weight:500;transition:all .2s;display:flex}.option-btn:active{background:var(--primary);border-color:var(--primary);transform:scale(.98)}.option-btn:hover{border-color:var(--primary);background:#7c6fff1a}.option-letter{background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:13px;font-weight:800;display:flex;box-shadow:0 4px 8px #7c6fff4d}.result-card{text-align:center;background:linear-gradient(135deg, var(--card-bg), var(--card-hover));border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow);padding:48px 24px}.result-emoji{filter:drop-shadow(0 8px 16px #0000004d);margin-bottom:20px;font-size:72px}.result-score{background:linear-gradient(135deg, var(--primary-light), var(--secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:56px;font-weight:900}.result-percent{color:var(--text-muted);margin-bottom:28px;font-size:24px}.chat-page{flex-direction:column;height:100vh;display:flex}.chat-header{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);background:#161628f2;align-items:center;gap:14px;padding:14px 16px;display:flex;box-shadow:0 4px 12px #0003}.chat-header h3{font-size:17px;font-weight:800}.messages{flex-direction:column;flex:1;gap:8px;padding:16px;display:flex;overflow-y:auto}.message{flex-direction:column;max-width:80%;display:flex}.message--me{align-self:flex-end;align-items:flex-end}.message--other{align-self:flex-start;align-items:flex-start}.msg-sender{color:var(--text-muted);margin-bottom:4px;font-size:11px;font-weight:600}.msg-bubble{box-shadow:var(--shadow-sm);border-radius:18px;padding:10px 16px;font-size:14px;line-height:1.5}.message--other .msg-bubble{background:var(--card-bg);border:1px solid var(--border);border-bottom-left-radius:4px}.message--me .msg-bubble{background:linear-gradient(135deg, var(--primary), var(--primary-dark));border-bottom-right-radius:4px}.msg-time{color:var(--text-dim);margin-top:4px;font-size:10px}.chat-input{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid var(--border);background:#161628f2;gap:10px;padding:14px 16px;display:flex}.chat-input input{background:var(--bg2);border:1px solid var(--border);color:var(--text);border-radius:24px;outline:none;flex:1;padding:12px 18px;font-size:14px;transition:border-color .2s}.chat-input input:focus{border-color:var(--primary)}.group-card{background:var(--card-bg);border-radius:var(--radius);cursor:pointer;border:1px solid var(--border);box-shadow:var(--shadow-sm);align-items:center;gap:14px;margin-bottom:12px;padding:16px;transition:all .2s;display:flex}.group-card:hover{background:var(--card-hover);transform:translate(4px)}.group-avatar{background:linear-gradient(135deg, var(--primary), var(--primary-dark));border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;font-size:20px;font-weight:800;display:flex;box-shadow:0 4px 12px #7c6fff4d}.group-info{flex:1}.group-info h3{margin-bottom:3px;font-size:15px;font-weight:700}.group-info span{color:var(--text-muted);font-size:12px}.arrow{color:var(--text-dim);font-size:20px}.loader{height:100vh;color:var(--text-muted);flex-direction:column;justify-content:center;align-items:center;gap:16px;display:flex}.spinner{border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:44px;height:44px;animation:.8s linear infinite spin;box-shadow:0 0 16px #7c6fff33}@keyframes spin{to{transform:rotate(360deg)}}.empty{text-align:center;color:var(--text-muted);flex-direction:column;align-items:center;gap:12px;padding:48px 24px;font-size:15px;display:flex}.empty:before{content:"📭";font-size:48px}@keyframes fadeIn{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.page,.card{animation:.3s fadeIn}.badge{background:var(--danger);color:#fff;border-radius:20px;padding:2px 8px;font-size:11px;font-weight:700;display:inline-block}.badge-success{background:var(--secondary)}.badge-warning{background:var(--warning);color:#000}.badge-info{background:var(--info);color:#000}.stats-card{background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm);margin-bottom:12px;padding:20px}.stats-card h3{color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px;font-size:13px;font-weight:600}.stats-value{background:linear-gradient(135deg, var(--primary-light), var(--secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:32px;font-weight:900}