*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary:#0284c7;--primary-light:#38bdf8;--primary-dark:#0369a1;--bg:#f0f9ff;--white:#fff;--text:#1e293b;--text-secondary:#64748b;--border:#e2e8f0;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--shadow:0 1px 3px rgba(0,0,0,.08);--shadow-md:0 4px 12px rgba(0,0,0,.1);--radius:8px;--radius-lg:12px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg);line-height:1.6}a{text-decoration:none;color:var(--primary)}button{cursor:pointer;border:none;outline:none;font-family:inherit}input,select,textarea{border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;font-size:14px;outline:none;width:100%;transition:border .2s;font-family:inherit}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #0284c71a}.app-layout{display:flex;min-height:100vh}.app-sidebar{width:220px;background:linear-gradient(180deg,var(--primary-dark),var(--primary));color:var(--white);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:50;overflow-y:auto}.app-sidebar .logo{padding:24px 20px;font-size:18px;font-weight:700;border-bottom:1px solid rgba(255,255,255,.15);display:flex;align-items:center;gap:10px}.app-sidebar nav{padding:12px 0;flex:1}.app-sidebar nav a{display:flex;align-items:center;gap:10px;padding:12px 20px;color:#ffffffbf;font-size:14px;transition:all .2s;border-left:3px solid transparent}.app-sidebar nav a:hover,.app-sidebar nav a.active{background:#ffffff1a;color:var(--white);border-left-color:var(--white)}.app-main{margin-left:220px;flex:1;display:flex;flex-direction:column}.app-header{background:var(--white);padding:0 28px;height:64px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow);position:sticky;top:0;z-index:40}.app-header h2{font-size:18px;font-weight:600}.app-header .user-info{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--text-secondary)}.app-content{padding:24px 28px;flex:1}.card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:24px;margin-bottom:20px}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.card-header h3{font-size:16px;font-weight:600}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:linear-gradient(135deg,#e0f2fe,#f0f9ff);border-radius:var(--radius-lg);padding:20px;border:1px solid #bae6fd}.stat-card .stat-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;font-size:20px}.stat-card .stat-value{font-size:28px;font-weight:700;color:var(--primary-dark)}.stat-card .stat-label{font-size:13px;color:var(--text-secondary);margin-top:4px}.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius);font-size:14px;font-weight:500;transition:all .2s;white-space:nowrap}.btn-primary{background:var(--primary);color:var(--white)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #0284c74d}.btn-success{background:var(--success);color:var(--white)}.btn-success:hover{opacity:.9}.btn-danger{background:var(--danger);color:var(--white)}.btn-danger:hover{opacity:.9}.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}.btn-outline:hover{background:#0284c70d}.btn-sm{padding:6px 14px;font-size:13px}.btn-lg{padding:14px 28px;font-size:16px}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-inline{display:flex;gap:12px;align-items:flex-end}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}th{background:#f8fafc;font-weight:600;color:var(--text-secondary);font-size:13px}tr:hover td{background:#f0f9ff}.chart-container{width:100%;height:300px;margin:16px 0}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}.calendar-day{padding:10px 4px;text-align:center;border-radius:6px;font-size:13px;cursor:pointer;transition:.2s;position:relative}.calendar-day:hover{background:#e0f2fe}.calendar-day.today{border:2px solid var(--primary);font-weight:600}.calendar-day.has-record{background:#dbeafe}.calendar-day.has-record:after{content:"";position:absolute;bottom:4px;left:50%;transform:translate(-50%);width:6px;height:6px;border-radius:50%;background:var(--primary)}.calendar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.calendar-weekday{text-align:center;font-size:12px;color:var(--text-secondary);font-weight:600;padding:8px 0}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:500}.badge-success{background:#d1fae5;color:#065f46}.badge-warning{background:#fef3c7;color:#92400e}.badge-danger{background:#fee2e2;color:#991b1b}.badge-info{background:#dbeafe;color:#1e40af}.badge-default{background:#f1f5f9;color:#475569}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--white);border-radius:var(--radius-lg);padding:28px;width:90%;max-width:560px;max-height:85vh;overflow-y:auto;box-shadow:0 20px 60px #00000026}.modal h3{margin-bottom:20px;font-size:18px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#e0f2fe,#bae6fd,#7dd3fc)}.login-card{background:var(--white);border-radius:16px;padding:40px;width:90%;max-width:420px;box-shadow:0 20px 60px #0000001f}.login-card .login-logo{text-align:center;margin-bottom:32px}.login-card .login-logo h1{font-size:24px;color:var(--primary-dark);margin-bottom:8px}.login-card .login-logo p{color:var(--text-secondary);font-size:14px}.login-card .tab-group{display:flex;margin-bottom:24px;border-bottom:2px solid var(--border)}.login-card .tab-group button{flex:1;padding:10px;background:none;font-size:14px;font-weight:500;color:var(--text-secondary);border-bottom:2px solid transparent;margin-bottom:-2px;transition:.2s}.login-card .tab-group button.active{color:var(--primary);border-bottom-color:var(--primary)}.dashboard-welcome{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--white);border-radius:var(--radius-lg);padding:28px;margin-bottom:24px}.dashboard-welcome h2{font-size:22px;margin-bottom:8px}.dashboard-welcome p{opacity:.9;font-size:14px}.quick-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:24px}.quick-action-btn{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;text-align:center;transition:.2s}.quick-action-btn:hover{border-color:var(--primary);box-shadow:0 4px 12px #0284c71a;transform:translateY(-2px)}.quick-action-btn .qa-icon{font-size:28px;margin-bottom:8px}.loading-spinner{display:flex;align-items:center;justify-content:center;padding:40px;color:var(--text-secondary)}.loading-spinner:after{content:"";width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty-state .empty-icon{font-size:48px;margin-bottom:16px;opacity:.5}.empty-state p{font-size:14px}.tips-box{background:#fefce8;border:1px solid #fde68a;border-radius:var(--radius);padding:12px 16px;margin-top:12px}.tips-box.success{background:#f0fdf4;border-color:#bbf7d0}.tips-box.danger{background:#fef2f2;border-color:#fecaca}.meal-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;margin-bottom:12px}.meal-card .meal-type{font-weight:600;font-size:14px;color:var(--primary);margin-bottom:8px}.meal-card .food-item{display:flex;justify-content:space-between;padding:6px 0;font-size:13px;border-bottom:1px dashed #f1f5f9}.meal-card .food-item:last-child{border-bottom:none}.nutrition-bar{display:flex;gap:8px;margin-top:12px}.nutrition-bar span{flex:1;text-align:center;font-size:12px;padding:8px 4px;border-radius:6px;background:#f1f5f9}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius-lg);padding:40px;text-align:center;transition:.2s;cursor:pointer}.upload-zone:hover{border-color:var(--primary);background:#f0f9ff}.upload-zone.drag-over{border-color:var(--primary);background:#e0f2fe}.upload-zone .upload-icon{font-size:48px;margin-bottom:12px;opacity:.5}@media (max-width:768px){.app-sidebar{width:200px}.app-main{margin-left:200px}.app-content{padding:16px}.form-row{grid-template-columns:1fr}.stat-grid{grid-template-columns:repeat(2,1fr)}.login-card{padding:24px}}@media (max-width:640px){.app-sidebar{display:none}.app-main{margin-left:0}.stat-grid{grid-template-columns:1fr}}