*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f8fafc;--sidebar-bg: #1e293b;--sidebar-hover: rgba(255,255,255,.07);--sidebar-active: rgba(255,255,255,.12);--card-bg: #ffffff;--border: #e2e8f0;--text-primary: #0f172a;--text-secondary: #64748b;--accent: #2563eb;--accent-light: #eff6ff}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text-primary);font-size:14px;line-height:1.5}.layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:224px;background:var(--sidebar-bg);display:flex;flex-direction:column;flex-shrink:0;overflow-y:auto}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:24px 20px 20px;color:#f1f5f9;font-size:15px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.08)}.sidebar-brand span:first-child{font-size:20px}.sidebar-section{padding:16px 12px 8px;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:#475569}.sidebar nav a{display:flex;align-items:center;gap:10px;padding:10px 16px;margin:2px 8px;border-radius:6px;color:#94a3b8;text-decoration:none;font-size:13.5px;transition:background .15s,color .15s}.sidebar nav a:hover{background:var(--sidebar-hover);color:#e2e8f0}.sidebar nav a.active{background:var(--sidebar-active);color:#f1f5f9}.main{flex:1;overflow-y:auto;padding:28px 32px}.page-title{font-size:20px;font-weight:700;margin-bottom:4px}.page-desc{font-size:13px;color:var(--text-secondary);margin-bottom:24px}.card{background:var(--card-bg);border-radius:10px;border:1px solid var(--border);padding:20px}.card-title{font-size:12px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:14px}.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}.summary-card{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;padding:18px 20px}.summary-card .label{font-size:12px;color:var(--text-secondary);font-weight:500;margin-bottom:6px}.summary-card .value{font-size:26px;font-weight:700}.summary-card .sub{font-size:12px;color:var(--text-secondary);margin-top:2px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}.section{margin-bottom:24px}.heatmap-container{overflow-x:auto}.heatmap-grid{display:grid;gap:2px;font-size:11px}.heatmap-cell{display:flex;align-items:center;justify-content:center;border-radius:3px;cursor:default;font-size:10px;font-weight:500}.heatmap-cell:hover{outline:2px solid rgba(0,0,0,.25)}.heatmap-label{font-size:11px;color:var(--text-secondary);white-space:nowrap;display:flex;align-items:center}.behavior-dot{width:9px;height:9px;border-radius:50%;display:inline-block;margin-right:6px;flex-shrink:0}.timeline-bar{position:relative;height:36px;background:#f1f5f9;border-radius:6px;overflow:hidden;margin-bottom:4px}.timeline-block{position:absolute;top:0;height:100%}.timeline-ticks{display:flex}.timeline-tick{flex:1;text-align:center;font-size:10px;color:var(--text-secondary)}.legend{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:12px}.legend-item{display:flex;align-items:center;font-size:12px;color:var(--text-secondary)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;border:none;transition:background .15s}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:#1d4ed8}.btn-primary:disabled{background:#93c5fd;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg)}.btn-danger{background:#fee2e2;color:#dc2626;border:1px solid #fca5a5}.btn-danger:hover{background:#fecaca}.btn-sm{padding:5px 10px;font-size:12px}.form-group{margin-bottom:14px}.form-label{display:block;font-size:12px;font-weight:500;color:var(--text-secondary);margin-bottom:5px}.form-input{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:13px;color:var(--text-primary);background:#fff;outline:none}.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb1a}.pet-card{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border:1px solid var(--border);border-radius:8px;margin-bottom:8px;cursor:pointer;transition:border-color .15s,background .15s}.pet-card:hover,.pet-card.selected{border-color:var(--accent);background:var(--accent-light)}.pet-card .pet-name{font-weight:600;font-size:13px}.pet-card .pet-date{font-size:11px;color:var(--text-secondary);margin-top:2px}.split-layout{display:flex;gap:24px}.split-left{width:256px;flex-shrink:0}.split-right{flex:1;min-width:0}.tabs{display:flex;gap:4px;margin-bottom:16px;flex-wrap:wrap}.tab{padding:6px 14px;border-radius:6px;font-size:12px;font-weight:500;cursor:pointer;border:1px solid var(--border);background:#fff;color:var(--text-secondary);transition:all .15s}.tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.loading{color:var(--text-secondary);font-size:13px;padding:40px;text-align:center}.empty{color:var(--text-secondary);font-size:13px;padding:20px;text-align:center;border:1px dashed var(--border);border-radius:8px}.insight{background:#f0f9ff;border:1px solid #bae6fd;border-radius:6px;padding:10px 14px;font-size:12.5px;color:#0369a1;margin-bottom:16px}