/* System Tools — Tool explorer and runner */
/* Light theme. Design standard v1.0. */

:root { --bg: #FAFAFA; --surface: #FFFFFF; --border: rgba(0, 0, 0, 0.08); --text: #111111; --muted: #666666; --accent: #2563EB; --green: #7dba7d; --red: #c96b6b; --mono: 'IBM Plex Mono', 'SF Mono', monospace; }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'IBM Plex Sans', system-ui, sans-serif; background: var(--bg); color: var(--text); display: flex; height: 100vh; }

/* Left panel — tool list */
.tools-nav { width: 320px; background: var(--surface); border-right: 1px solid var(--border); overflow-y: auto; padding: 16px; flex-shrink: 0; }
.tools-nav h1 { font-size: 18px; margin-bottom: 4px; }
.tools-nav .subtitle { color: var(--muted); font-size: 13px; margin-bottom: 16px; }
.tools-nav .stats { display: flex; gap: 12px; margin-bottom: 16px; font-size: 12px; color: var(--muted); }
.tools-nav .stats span { background: var(--bg); padding: 4px 8px; border-radius: 4px; }

.group-header { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin: 16px 0 6px; padding-left: 4px; }
.tool-item { padding: 8px 12px; border-radius: 6px; cursor: pointer; font-size: 13px; margin-bottom: 2px; display: flex; align-items: center; gap: 8px; }
.tool-item:hover { background: var(--bg); }
.tool-item.active { background: var(--accent); color: #fff; }
.tool-item .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); flex-shrink: 0; }
.tool-item .dot.disabled { background: var(--red); }
.tool-item .name { font-family: var(--mono); font-size: 12px; }

/* Right panel — tool detail + invoke */
.tool-detail { flex: 1; padding: 24px 32px; overflow-y: auto; }
.tool-detail h2 { font-size: 20px; font-family: var(--mono); margin-bottom: 8px; }
.tool-detail .group-badge { display: inline-block; background: var(--accent); color: #fff; font-size: 11px; padding: 2px 8px; border-radius: 4px; margin-bottom: 12px; }
.tool-detail .description { color: var(--muted); font-size: 14px; line-height: 1.5; margin-bottom: 20px; }

.param-section { margin-bottom: 20px; }
.param-section h3 { font-size: 13px; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.05em; }
.param-row { display: flex; gap: 12px; align-items: center; margin-bottom: 8px; }
.param-row label { width: 140px; font-family: var(--mono); font-size: 13px; flex-shrink: 0; }
.param-row input, .param-row textarea { flex: 1; background: var(--bg); border: 1px solid var(--border); color: var(--text); border-radius: 4px; padding: 8px 10px; font-size: 13px; font-family: var(--mono); }
.param-row input:focus, .param-row textarea:focus { outline: none; border-color: var(--accent); }
.param-row textarea { min-height: 80px; resize: vertical; }
.param-row .required { color: var(--red); font-size: 11px; }

.invoke-btn { background: var(--accent); color: #fff; border: none; padding: 10px 24px; border-radius: 6px; font-size: 14px; cursor: pointer; font-weight: 600; }
.invoke-btn:hover { opacity: 0.9; }
.invoke-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.result-section { margin-top: 20px; }
.result-section h3 { font-size: 13px; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.05em; }
.result-box { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 16px; font-family: var(--mono); font-size: 12px; line-height: 1.6; white-space: pre-wrap; max-height: 400px; overflow-y: auto; }
.result-box.success { border-color: var(--green); }
.result-box.error { border-color: var(--red); }
.result-barcode { font-size: 11px; color: var(--accent); margin-top: 8px; }
.result-time { font-size: 11px; color: var(--muted); }

.empty-state { display: flex; align-items: center; justify-content: center; height: 100%; color: var(--muted); font-size: 16px; }