:root{--primary:#1e3a5f;--primary-light:#2d5a8e;--accent:#4a9eff;--success:#22c55e;--warning:#f59e0b;--danger:#ef4444;--bg:#f8fafc;--card:#fff;--text:#1e293b;--text-muted:#64748b;--border:#e2e8f0;--radius:12px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6}.app{flex-direction:column;min-height:100vh;display:flex}.header{background:var(--primary);color:#fff;justify-content:space-between;align-items:center;padding:16px 24px;display:flex;box-shadow:0 2px 8px #0000001a}.header h1{align-items:center;gap:10px;font-size:20px;font-weight:600;display:flex}.header-nav{gap:8px;display:flex}.header-nav button{color:#fff;cursor:pointer;background:#ffffff26;border:none;border-radius:8px;padding:8px 16px;font-size:14px;transition:background .2s}.header-nav button:hover,.header-nav button.active{background:#ffffff40}.user-select{align-items:center;gap:8px;display:flex}.user-select select{color:#fff;cursor:pointer;background:#ffffff26;border:1px solid #ffffff4d;border-radius:8px;padding:8px 12px;font-size:14px}.user-select select option{color:var(--text);background:#fff}.main-content{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:24px}.card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);margin-bottom:16px;padding:24px;box-shadow:0 1px 3px #0000000a}.card h2{color:var(--primary);margin-bottom:16px;font-size:18px}.card h3{margin-bottom:12px;font-size:16px}.progress-bar-container{margin-bottom:24px}.progress-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.progress-header span{color:var(--text-muted);font-size:14px}.progress-percent{font-weight:700;color:var(--primary)!important;font-size:18px!important}.progress-bar{background:var(--border);border-radius:6px;height:12px;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--accent), var(--success));border-radius:6px;height:100%;transition:width .5s}.module-list{flex-direction:column;gap:12px;display:flex}.module-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;align-items:center;gap:16px;padding:16px 20px;transition:all .2s;display:flex}.module-item:hover{border-color:var(--accent);transform:translateY(-1px);box-shadow:0 2px 8px #4a9eff1a}.module-item.completed{border-left:4px solid var(--success)}.module-number{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:16px;font-weight:700;display:flex}.module-number.done{background:var(--success);color:#fff}.module-number.pending{background:var(--border);color:var(--text-muted)}.module-info{flex:1}.module-info h3{margin-bottom:2px;font-size:16px}.module-info p{color:var(--text-muted);font-size:13px}.module-status{border-radius:20px;padding:4px 12px;font-size:13px;font-weight:500}.module-status.done{color:#16a34a;background:#dcfce7}.module-status.pending{color:#d97706;background:#fef3c7}.module-content{max-width:800px}.module-content .back-btn{color:var(--accent);cursor:pointer;background:0 0;border:none;align-items:center;gap:4px;margin-bottom:16px;font-size:14px;display:flex}.module-content .content-body{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:20px;padding:32px}.module-content .content-body h1{color:var(--primary);margin:24px 0 12px;font-size:24px}.module-content .content-body h2{color:var(--primary);margin:20px 0 10px;font-size:20px}.module-content .content-body h3{margin:16px 0 8px;font-size:17px}.module-content .content-body p{margin-bottom:12px}.module-content .content-body ul,.module-content .content-body ol{margin:8px 0 12px 24px}.module-content .content-body li{margin-bottom:4px}.module-content .content-body table{border-collapse:collapse;width:100%;margin:12px 0}.module-content .content-body th,.module-content .content-body td{border:1px solid var(--border);text-align:left;padding:8px 12px}.module-content .content-body th{background:var(--bg);font-weight:600}.module-content .content-body strong{color:var(--primary)}.complete-btn{background:var(--success);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:12px 32px;font-size:16px;font-weight:600;transition:opacity .2s}.complete-btn:hover{opacity:.9}.complete-btn:disabled{opacity:.5;cursor:default}.ack-section{border-radius:var(--radius);background:#fffbeb;border:1px solid #fde68a;margin-top:24px;padding:24px}.ack-section h3{color:#92400e;margin-bottom:12px}.ack-section p{color:#78350f;margin-bottom:16px;font-size:14px}.signature-input{align-items:center;gap:12px;display:flex}.signature-input input{border:1px solid #fbbf24;border-radius:8px;flex:1;padding:10px 14px;font-size:14px}.sign-btn{color:#fff;cursor:pointer;background:#d97706;border:none;border-radius:8px;padding:10px 24px;font-weight:600}.signed-badge{color:#16a34a;background:#dcfce7;border-radius:8px;align-items:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:500;display:inline-flex}.admin-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;display:grid}.hire-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.hire-card h3{margin-bottom:4px;font-size:16px}.hire-card .email{color:var(--text-muted);margin-bottom:12px;font-size:13px}.hire-card .mini-progress{background:var(--border);border-radius:4px;height:8px;margin-bottom:8px;overflow:hidden}.hire-card .mini-fill{background:linear-gradient(90deg, var(--accent), var(--success));border-radius:4px;height:100%;transition:width .5s}.hire-card .stats{color:var(--text-muted);justify-content:space-between;font-size:13px;display:flex}.chat-container{flex-direction:column;height:calc(100vh - 200px);max-height:600px;display:flex}.chat-messages{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow-y:auto}.chat-message{border-radius:12px;max-width:80%;padding:12px 16px;font-size:14px;line-height:1.5}.chat-message.user{background:var(--primary);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.chat-message.assistant{background:var(--bg);border:1px solid var(--border);border-bottom-left-radius:4px;align-self:flex-start}.chat-message.assistant p{margin-bottom:8px}.chat-message.assistant p:last-child{margin-bottom:0}.chat-message.assistant ul{margin:4px 0 8px 20px}.chat-message.assistant strong{color:var(--primary)}.chat-input-area{border-top:1px solid var(--border);gap:8px;padding:16px;display:flex}.chat-input-area input{border:1px solid var(--border);border-radius:8px;flex:1;padding:12px 16px;font-size:14px}.chat-input-area button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:12px 24px;font-weight:600}.chat-input-area button:disabled{opacity:.5}.login-page{background:linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:#fff;border-radius:16px;width:100%;max-width:420px;padding:48px;box-shadow:0 20px 60px #0003}.login-card h1{color:var(--primary);text-align:center;margin-bottom:8px;font-size:24px}.login-card .subtitle{text-align:center;color:var(--text-muted);margin-bottom:32px;font-size:14px}.login-card select{border:1px solid var(--border);cursor:pointer;border-radius:8px;width:100%;margin-bottom:16px;padding:12px 16px;font-size:15px}.login-card button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:14px;font-size:16px;font-weight:600;transition:opacity .2s}.login-card button:hover{opacity:.9}.login-card button:disabled{opacity:.5}.loading{color:var(--text-muted);justify-content:center;align-items:center;padding:48px;display:flex}