:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2330;
  --border: #2a3140;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #3b82f6;
  --accent-2: #2563eb;
  --ok: #2ea043;
  --warn: #d29922;
  --bad: #f85149;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
/* The [hidden] attribute must always win over the display rules below
   (.modal/.rd-overlay/.login-wrap set display:flex/grid, which would otherwise
   override the browser default of [hidden]{display:none}). */
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
}
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }

.brand { font-weight: 700; font-size: 18px; letter-spacing: -0.02em; }
.brand span { color: var(--accent); }
.muted { color: var(--muted); font-size: 13px; }
.error { color: var(--bad); font-size: 13px; min-height: 18px; margin-top: 6px; }

/* login */
.login-wrap { min-height: 100vh; display: grid; place-items: center; }
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 32px;
  border-radius: 14px;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,.45);
}
.login-card .brand { font-size: 22px; }
.login-card input, .login-card button { padding: 11px 12px; border-radius: 8px; }
.login-card input { background: var(--bg); border: 1px solid var(--border); color: var(--text); }
.login-card button { background: var(--accent); color: #fff; border: none; font-weight: 600; }
.login-card button:hover { background: var(--accent-2); }

/* topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid var(--border); background: var(--panel);
}
.topbar-right { display: flex; align-items: center; gap: 12px; }
.pill { font-size: 12px; padding: 3px 9px; border-radius: 999px; background: var(--panel-2); border: 1px solid var(--border); }
.pill.live { color: var(--ok); border-color: rgba(46,160,67,.4); }
.pill.down { color: var(--bad); border-color: rgba(248,81,73,.4); }
.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); padding: 7px 12px; border-radius: 8px; }
.ghost:hover { background: var(--panel-2); }

/* layout */
.layout { display: grid; grid-template-columns: 380px 1fr; height: calc(100vh - 57px); }
.devices { border-right: 1px solid var(--border); display: flex; flex-direction: column; min-height: 0; }
.section-head { padding: 14px 16px; display: flex; flex-direction: column; gap: 10px; border-bottom: 1px solid var(--border); }
.section-head h2 { margin: 0; font-size: 15px; }
.section-head input { background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 8px 10px; border-radius: 8px; }

.device-list { overflow-y: auto; min-height: 0; }
.device-item {
  padding: 12px 16px; border-bottom: 1px solid var(--border); cursor: pointer;
  display: flex; align-items: center; gap: 12px;
}
.device-item:hover { background: var(--panel-2); }
.device-item.active { background: var(--panel-2); box-shadow: inset 3px 0 0 var(--accent); }
.dot { width: 9px; height: 9px; border-radius: 50%; flex: none; background: var(--muted); }
.dot.online { background: var(--ok); box-shadow: 0 0 8px rgba(46,160,67,.7); }
.dot.offline { background: #555; }
.device-meta { min-width: 0; flex: 1; }
.device-name { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.device-sub { color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mini-stats { display: flex; gap: 8px; font-size: 11px; color: var(--muted); }

/* detail */
.detail { overflow-y: auto; padding: 20px 24px; min-height: 0; }
.detail .empty { color: var(--muted); display: grid; place-items: center; height: 100%; }
.detail-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.detail-head h1 { font-size: 20px; margin: 0 0 4px; }
.detail-actions { display: flex; gap: 8px; }
.btn-primary { background: var(--accent); color: #fff; border: none; padding: 8px 14px; border-radius: 8px; font-weight: 600; }
.btn-primary:hover { background: var(--accent-2); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 18px 0; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.card .k { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.card .v { font-size: 22px; font-weight: 700; margin-top: 4px; }
.bar { height: 6px; border-radius: 4px; background: var(--panel-2); margin-top: 10px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); }
.bar > i.hot { background: var(--warn); }
.bar > i.crit { background: var(--bad); }

.info-grid { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 14px 0; font-size: 13px; }
.info-grid dt { color: var(--muted); }
.info-grid dd { margin: 0; font-family: var(--mono); }

/* terminal */
.terminal { margin-top: 20px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.terminal .term-head { background: var(--panel); padding: 10px 14px; display: flex; gap: 10px; align-items: center; border-bottom: 1px solid var(--border); }
.terminal .term-head select { background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 5px; }
.term-out { background: #0a0d12; font-family: var(--mono); font-size: 12.5px; padding: 12px 14px; height: 260px; overflow-y: auto; white-space: pre-wrap; }
.term-out .cmd { color: var(--accent); }
.term-out .err { color: var(--bad); }
.term-in { display: flex; border-top: 1px solid var(--border); }
.term-in input { flex: 1; background: #0a0d12; border: none; color: var(--text); font-family: var(--mono); padding: 11px 14px; outline: none; }
.term-in button { background: var(--panel); border: none; color: var(--text); padding: 0 18px; }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: grid; place-items: center; z-index: 50; }
.modal-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 24px; width: min(640px, 92vw); }
.modal-card h3 { margin: 0 0 8px; }
.modal-card label { display: block; margin: 14px 0 6px; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.code { background: #0a0d12; border: 1px solid var(--border); border-radius: 8px; padding: 12px; font-family: var(--mono); font-size: 12px; overflow-x: auto; white-space: pre-wrap; word-break: break-all; }
.tag { display: inline-block; background: var(--panel-2); border: 1px solid var(--border); border-radius: 999px; padding: 2px 9px; font-size: 11px; margin-right: 6px; }

.modal-card.wide { width: min(720px, 94vw); max-height: 88vh; overflow-y: auto; }
.modal-head { display: flex; align-items: center; justify-content: space-between; }
.modal-head h3, .modal-head h4 { margin: 0; }
.org-create { display: flex; gap: 8px; margin: 16px 0; }
.org-create input { flex: 1; background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 9px 11px; border-radius: 8px; }
.org-list { display: flex; flex-direction: column; gap: 8px; }
.org-row { display: flex; align-items: center; gap: 12px; padding: 12px 14px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; }
.org-row .org-info { flex: 1; min-width: 0; }
.org-row .org-name { font-weight: 600; }
.org-row .org-sub { color: var(--muted); font-size: 12px; }
.org-install { margin-top: 18px; border-top: 1px solid var(--border); padding-top: 16px; }

.admin-create { flex-wrap: wrap; }
.admin-create input { min-width: 120px; }
.admin-new-pw { background: #10331a; border: 1px solid rgba(46,160,67,.4); color: #b9f6ca; border-radius: 8px; padding: 10px 12px; margin-bottom: 12px; font-size: 13px; }
.admin-new-pw code { font-family: var(--mono); background: rgba(0,0,0,.3); padding: 2px 6px; border-radius: 4px; }
.admin-account { margin-top: 18px; border-top: 1px solid var(--border); padding-top: 16px; }
.admin-account h4 { margin: 0 0 10px; }
.pw-change { display: flex; gap: 8px; flex-wrap: wrap; }
.pw-change input { flex: 1; min-width: 160px; background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 9px 11px; border-radius: 8px; }
.role-tag { font-size: 11px; color: var(--muted); }

/* detail: side (thumbnail + remote button) */
.detail-side { display: flex; flex-direction: column; gap: 8px; align-items: flex-end; }
.thumb-wrap { width: 240px; height: 150px; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: #0a0d12; position: relative; cursor: pointer; display: grid; place-items: center; }
.thumb-wrap:hover { border-color: var(--accent); }
#thumb-img { width: 100%; height: 100%; object-fit: cover; display: none; }
.thumb-empty { position: absolute; color: var(--muted); font-size: 12px; }

/* tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: 18px 0 16px; }
.tab-btn { background: transparent; border: none; color: var(--muted); padding: 9px 16px; font-size: 14px; font-weight: 600; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--text); border-bottom-color: var(--accent); }

/* software tab */
.sw-head { display: flex; gap: 8px; margin-bottom: 8px; }
.sw-head input { flex: 1; background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 8px 10px; border-radius: 8px; }
.sw-body { max-height: 52vh; overflow: auto; }
.sw-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.sw-table th { text-align: left; color: var(--muted); font-weight: 600; padding: 6px 10px; position: sticky; top: 0; background: var(--bg); border-bottom: 1px solid var(--border); }
.sw-table td { padding: 6px 10px; border-bottom: 1px solid var(--border); }
.sw-table tr:hover td { background: var(--panel); }

/* chat tab */
.chat-log { height: 46vh; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; padding: 6px 2px; }
.chat-msg { max-width: 72%; padding: 8px 12px; border-radius: 12px; font-size: 14px; line-height: 1.35; word-wrap: break-word; }
.chat-msg.them { background: var(--panel); border: 1px solid var(--border); align-self: flex-start; border-bottom-left-radius: 4px; }
.chat-msg.me { background: var(--accent); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }
.chat-who { display: block; font-size: 11px; opacity: .75; margin-bottom: 2px; }
.chat-in { display: flex; gap: 8px; margin-top: 12px; }
.chat-in input { flex: 1; background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 10px 12px; border-radius: 8px; }
.chat-in button { background: var(--accent); color: #fff; border: none; border-radius: 8px; padding: 0 18px; font-weight: 600; cursor: pointer; }

/* ad-hoc code */
.adhoc-code { font-family: var(--mono); font-size: 30px; font-weight: 700; letter-spacing: 4px; color: var(--accent); background: var(--bg); border: 1px dashed var(--border); border-radius: 10px; padding: 16px; text-align: center; margin: 8px 0; }
.adhoc-steps { color: var(--text); font-size: 13px; line-height: 1.7; padding-left: 20px; }
.adhoc-steps a { color: var(--accent); }
.badge-adhoc { display: inline-block; background: rgba(210,153,34,.15); color: var(--warn); border: 1px solid rgba(210,153,34,.4); border-radius: 999px; font-size: 10px; padding: 1px 7px; vertical-align: middle; }

/* org update policy editor */
.pol-check { display: flex; align-items: center; gap: 8px; margin: 8px 0; font-size: 14px; }
.pol-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 12px 0; }
.pol-grid label { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--muted); }
.pol-grid select, .pol-grid input { background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 8px 10px; border-radius: 8px; }
.pol-grid .pol-check { grid-column: 1 / -1; color: var(--text); }

/* remote monitor selector */
.rd-monitors { display: inline-flex; gap: 4px; margin-left: 6px; }
.rd-monitors button { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); border-radius: 6px; padding: 4px 10px; font-size: 12px; }
.rd-monitors button.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* device-list org group headers */
.org-group { padding: 9px 16px; background: var(--bg); border-bottom: 1px solid var(--border); font-size: 11px; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); position: sticky; top: 0; z-index: 1; display: flex; justify-content: space-between; }

/* remote desktop viewer */
.rd-overlay { position: fixed; inset: 0; background: #05070a; z-index: 100; display: flex; flex-direction: column; }
.rd-bar { display: flex; align-items: center; gap: 12px; padding: 8px 14px; background: var(--panel); border-bottom: 1px solid var(--border); }
.rd-bar .rd-spacer { flex: 1; }
.rd-toggle { font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 5px; cursor: pointer; }
.rd-body { flex: 1; display: flex; min-height: 0; }
.rd-stage { flex: 1; display: grid; place-items: center; overflow: auto; position: relative; background:
  repeating-conic-gradient(#0a0d12 0% 25%, #0c1017 0% 50%) 50% / 22px 22px; }
.rd-chat { width: 320px; flex: none; border-left: 1px solid var(--border); background: var(--panel); display: flex; flex-direction: column; min-height: 0; }
.rd-chat-head { padding: 10px 14px; border-bottom: 1px solid var(--border); font-weight: 600; }
.rd-chat-log { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.rd-chat-in { display: flex; gap: 6px; padding: 10px; border-top: 1px solid var(--border); }
.rd-chat-in input { flex: 1; background: var(--bg); border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 9px 11px; }
.rd-chat-in button { background: var(--accent); color: #fff; border: none; border-radius: 8px; padding: 0 14px; font-weight: 600; cursor: pointer; }
#rd-canvas { max-width: 100%; max-height: 100%; image-rendering: auto; background: #000; box-shadow: 0 0 0 1px var(--border); cursor: crosshair; outline: none; }
#rd-canvas.no-control { cursor: default; }
#rd-canvas.fit { width: auto; height: auto; }
.rd-status { position: absolute; color: var(--muted); font-size: 14px; pointer-events: none; }

@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; grid-template-rows: 45vh 1fr; }
  .devices { border-right: none; border-bottom: 1px solid var(--border); }
}