:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1c2430;
  --muted: #6b7686;
  --border: #dde2e9;
  --primary: #1f6feb;
  --primary-text: #ffffff;
  --on: #1a7f37;
  --off: #b42318;
  --pending: #9a6700;
  --warn: #bc4c00;
  --on-bg: #dafbe1;
  --off-bg: #ffebe9;
  --pending-bg: #fff8c5;
  --warn-bg: #fff1e5;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141a;
    --card: #171d25;
    --text: #e6edf3;
    --muted: #8b96a5;
    --border: #2a323d;
    --primary: #3b82f6;
    --on: #3fb950;
    --off: #f85149;
    --pending: #d29922;
    --warn: #f0883e;
    --on-bg: #12261a;
    --off-bg: #2d1416;
    --pending-bg: #2b2210;
    --warn-bg: #2d1d0f;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

h1 { font-size: 20px; margin: 0; }
h2 { font-size: 17px; margin: 0 0 8px; }
h3 { font-size: 15px; margin: 0; }
a { color: var(--primary); }
code { font-size: 13px; }

label { display: grid; gap: 4px; margin-bottom: 12px; font-weight: 500; }
label.check { display: flex; align-items: center; gap: 8px; }

input, textarea, select {
  font: inherit;
  color: inherit;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  width: 100%;
}
input[type="checkbox"] { width: auto; }

button {
  font: inherit;
  font-weight: 600;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: var(--primary-text);
  border-radius: 8px;
  padding: 7px 14px;
  cursor: pointer;
}
button.secondary { background: transparent; color: var(--text); border-color: var(--border); }
button.danger { background: transparent; color: var(--off); border-color: var(--border); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.small { padding: 4px 10px; font-size: 13px; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.muted { color: var(--muted); margin: 0 0 12px; }
.error { color: var(--off); }
.msg { color: var(--muted); }
.empty { text-align: center; color: var(--muted); padding: 24px; }
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* Rol operador: se ocultan las funciones de administrador */
body.role-operador .admin-only { display: none !important; }

/* --- Inicio de sesión --- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login .card { width: min(400px, 100%); display: grid; gap: 4px; }
.login h1 { margin-bottom: 12px; }
.login-links { display: flex; justify-content: space-between; margin: 8px 0 0; font-size: 13px; }
#loginForm .mode-login, #loginForm .mode-setup, #loginForm .mode-emergency { display: none; }
#loginForm[data-mode="login"] .mode-login,
#loginForm[data-mode="setup"] .mode-setup,
#loginForm[data-mode="emergency"] .mode-emergency { display: block; }
#loginForm[data-mode="login"] .mode-link-login,
#loginForm[data-mode="setup"] .login-links,
#loginForm[data-mode="emergency"] .mode-link-emergency { visibility: hidden; }

/* --- Estructura --- */
main { padding: 16px; max-width: 1400px; margin: 0 auto; display: grid; gap: 16px; }
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.tabs { display: flex; gap: 4px; margin-right: auto; }
.tab { background: transparent; color: var(--muted); border-color: transparent; }
.tab.active { color: var(--text); border-color: var(--border); background: var(--card); }
.conn { color: var(--muted); font-size: 13px; }
.conn.ok { color: var(--on); }
.whoami { font-size: 13px; color: var(--muted); }
.view { display: grid; gap: 16px; }

/* --- Tablero --- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px 16px; display: grid; }
.stat span { font-size: 28px; font-weight: 700; line-height: 1.1; }
.stat small { color: var(--muted); }
.stat.on span { color: var(--on); }
.stat.off span { color: var(--off); }
.stat.pending span { color: var(--pending); }
.stat.warn span { color: var(--warn); }

.alerts { background: var(--off-bg); border: 1px solid var(--off); border-radius: 12px; padding: 12px 16px; }
.alerts-head { display: flex; justify-content: space-between; align-items: center; }
.alerts ul { margin: 8px 0 0; padding-left: 20px; }

.pending-box { border-color: var(--pending); }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; }
.toolbar input { flex: 1 1 260px; width: auto; }
.toolbar select { width: auto; }

.sede { display: grid; gap: 8px; margin-bottom: 16px; }
.sede-head { display: flex; align-items: baseline; gap: 8px; }
.sede-head small { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }

.tile {
  text-align: left;
  font-weight: 400;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-left: 5px solid var(--muted);
  border-radius: 10px;
  padding: 10px 12px;
  display: grid;
  gap: 4px;
}
.tile.on { border-left-color: var(--on); }
.tile.off { border-left-color: var(--off); background: var(--off-bg); }
.tile.pending { border-left-color: var(--pending); }
.tile-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.tile strong { font-size: 15px; }
.tile small { color: var(--muted); }
.tile .meta { display: flex; gap: 10px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge.on { color: var(--on); background: var(--on-bg); }
.badge.off { color: var(--off); background: var(--off-bg); }
.badge.pending { color: var(--pending); background: var(--pending-bg); }
.low { color: var(--warn); font-weight: 600; }

/* --- Tablas --- */
.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--border); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { font-size: 12px; text-transform: uppercase; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: none; }
td.actions { white-space: nowrap; text-align: right; }
td.actions button { margin-left: 4px; }
.inline-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0 12px; align-items: end; }
.inline-form button { margin-bottom: 12px; }

/* --- Configuración --- */
#settingsForm { max-width: 720px; }
.zoom-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
fieldset.wifi {border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin: 0 0 14px; }
fieldset.wifi legend { font-weight: 600; padding: 0 6px; }
.wifi-row { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr auto; gap: 8px; margin-bottom: 8px; align-items: center; }
.wifi-row input, .wifi-row select { margin: 0; }
@media (max-width: 640px) { .wifi-row { grid-template-columns: 1fr 1fr; } }
.qr-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 340px); gap: 24px; margin-top: 12px; }
.qr-output svg { width: 100%; height: auto; display: block; border-radius: 8px; }
details summary { cursor: pointer; font-weight: 600; }

/* --- Diálogos --- */
dialog {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  color: var(--text);
  width: min(520px, calc(100vw - 32px));
  padding: 20px;
}
dialog::backdrop { background: rgb(0 0 0 / .5); }
dialog menu { display: flex; justify-content: flex-end; gap: 8px; padding: 0; margin: 12px 0 0; }
.dialog-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.info { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 0 0 16px; font-size: 13px; }
.info dt { color: var(--muted); }
.info dd { margin: 0; overflow-wrap: anywhere; }

dialog.remote { width: min(1100px, calc(100vw - 24px)); max-height: calc(100vh - 24px); padding: 12px; }
.remote-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.remote-head .muted { margin: 0 auto 0 0; }
.remote-screen { display: grid; place-items: center; background: #000; border-radius: 8px; min-height: 240px; }
#rScreen { display: block; max-width: 100%; max-height: calc(100vh - 230px); cursor: crosshair; user-select: none; touch-action: none; }
.remote-controls { display: grid; gap: 8px; margin-top: 10px; }
.remote-controls input { flex: 1 1 240px; width: auto; }
.remote-controls .muted { margin: 0; font-size: 12px; }

@media (max-width: 760px) {
  .qr-layout { grid-template-columns: 1fr; }
  .tabs { order: 3; width: 100%; }
}