:root{--bg: #f6f7f9;--card: #ffffff;--text: #1f2328;--muted: #6b7280;--border: #e5e7eb;--primary: #2563eb;--primary-hover: #1d4ed8;--on-primary: #ffffff;--danger: #dc2626;--tag-bg: #eef2ff;--tag-text: #4338ca;--shadow: 0 1px 2px rgba(0, 0, 0, .06)}[data-theme=dark]{--bg: #101216;--card: #1a1e25;--text: #e7e9ee;--muted: #9aa1ad;--border: #2b313b;--primary: #3b82f6;--primary-hover: #2563eb;--on-primary: #ffffff;--danger: #f87171;--tag-bg: #252b3a;--tag-text: #a5b4fc;--shadow: 0 1px 2px rgba(0, 0, 0, .4)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}.app{max-width:720px;margin:0 auto;padding:16px 16px 48px}.topbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-bottom:16px}.topbar h1{font-size:20px;margin:0}.topbar-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.nickname-chip{font-size:13px;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:2px 10px}.btn{border:1px solid var(--border);background:var(--card);color:var(--text);border-radius:8px;padding:8px 14px;font-size:14px;font-family:inherit;cursor:pointer;transition:background .15s}.btn:hover{background:var(--border)}.btn.primary{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}.btn.primary:hover{background:var(--primary-hover)}.btn.ghost{background:transparent}.btn.danger{color:var(--danger);border-color:transparent;background:transparent}.btn.danger:hover{background:var(--danger);color:#fff}.btn.small{padding:4px 10px;font-size:13px}.composer{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:12px;box-shadow:var(--shadow);margin-bottom:16px}.composer textarea{width:100%;border:1px solid var(--border);border-radius:8px;padding:10px;font-size:15px;font-family:inherit;background:var(--bg);color:var(--text);resize:vertical}.composer-row{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}.composer-row input{flex:1;min-width:200px;border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:14px;font-family:inherit;background:var(--bg);color:var(--text)}.muted{color:var(--muted);font-size:13px;margin:8px 0 0}.filters{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.filters input{flex:1;min-width:180px;border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:14px;font-family:inherit;background:var(--card);color:var(--text)}.filters select{border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:14px;font-family:inherit;background:var(--card);color:var(--text)}.log-list{display:flex;flex-direction:column;gap:12px}.log-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px;box-shadow:var(--shadow)}.log-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:6px}.log-nickname{font-weight:600}.log-time{color:var(--muted);font-size:12px;white-space:nowrap}.log-content{white-space:pre-wrap;word-break:break-word;margin-bottom:10px}.log-foot{display:flex;justify-content:space-between;align-items:center;gap:8px}.log-tags{display:flex;flex-wrap:wrap;gap:6px}.tag{border:none;background:var(--tag-bg);color:var(--tag-text);border-radius:999px;padding:2px 10px;font-size:12px;cursor:pointer}.tag:hover{filter:brightness(.95)}.empty{text-align:center;color:var(--muted);padding:40px 0}.status{text-align:center;color:var(--muted);padding:20px 0;font-size:14px}.modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;padding:16px;z-index:100}.modal.hidden{display:none}.modal-card{background:var(--card);border-radius:16px;padding:28px;width:100%;max-width:360px;text-align:center}.modal-card h1{margin:0 0 4px;font-size:22px}.modal-card p{margin:0 0 16px}.modal-card input{width:100%;border:1px solid var(--border);border-radius:8px;padding:10px;font-size:16px;font-family:inherit;margin-bottom:12px;background:var(--bg);color:var(--text);text-align:center}.modal-card .btn{width:100%}.error-text{color:var(--danger);font-size:13px;margin-top:8px}.hidden{display:none}@media (min-width: 640px){.topbar h1{font-size:24px}}