:root{--bg:#f5f6f8;--card:#fff;--text:#171717;--muted:#6b7280;--border:#e5e7eb;--accent:#b91c1c;--green:#15803d;--orange:#c2410c}
.history-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:16px 0 10px}.mode-toggle{display:flex;gap:6px}.btn-mode{background:#e5e7eb;color:#374151}.btn-mode.active{background:var(--accent);color:#fff}.history-message{margin:0 0 10px;padding:10px 12px;border-radius:8px;background:#f3f4f6}@media(max-width:520px){.history-toolbar{align-items:flex-start;flex-direction:column}}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.topbar{height:58px;background:#111;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 24px}.brand{font-weight:700}.nav{display:flex;align-items:center;gap:18px;font-size:14px}.logout-form,.inline-form{display:inline;margin:0}.logout-link{border:0;padding:0;background:transparent;color:inherit;font:inherit;cursor:pointer}.container{max-width:1280px;margin:24px auto;padding:0 20px}.grid{display:grid;grid-template-columns:320px 1fr;gap:20px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px}.stack{display:flex;flex-direction:column;gap:12px}.device{padding:12px;border:1px solid var(--border);border-radius:10px;background:#fff}.device-head{display:flex;justify-content:space-between;gap:10px}.muted{color:var(--muted);font-size:13px}.badge{display:inline-block;padding:4px 8px;border-radius:999px;font-size:12px}.online{background:#dcfce7;color:#166534}.offline{background:#fee2e2;color:#991b1b}.recent{background:#ffedd5;color:#9a3412}.scheduled{background:#e5e7eb;color:#374151}#map{height:680px;border-radius:12px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px}.btn{display:inline-block;border:0;border-radius:8px;padding:10px 14px;cursor:pointer;font-weight:600}.btn-primary{background:var(--accent);color:#fff}.btn-secondary{background:#e5e7eb}.btn-danger{background:#991b1b;color:#fff}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:10px;border-bottom:1px solid var(--border);font-size:14px}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:100%;max-width:380px}.notice{padding:10px 12px;border-radius:8px;background:#eef2ff;margin-bottom:12px}.error{background:#fee2e2;color:#991b1b}@media(max-width:850px){.grid{grid-template-columns:1fr}#map{height:520px}.form-row{grid-template-columns:1fr}}