:root {
  --nexio-green: #52ae32;
  --nexio-blue: #0065b0;
  --nexio-dark-blue: #003359;
  --bg: #003359;
  --panel: rgba(0, 45, 77, 0.82);
  --panel-raised: rgba(0, 72, 119, 0.82);
  --border: rgba(116, 181, 220, 0.28);
  --text: #f3f7fa;
  --text-muted: #b6c8d4;
  --text-faint: #7892a3;
  --accent-open: #52ae32;
  --accent-open-dim: rgba(82, 174, 50, 0.18);
  --accent-closed: #7892a3;
  --accent-warn: #e0a64c;
  --accent-error: #dc665d;
  --topbar-bg: rgba(0, 40, 68, 0.86);
  --radius: 5px;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

:root[data-theme="light"] {
  --bg: #f7f8fa;
  --panel: rgba(255, 255, 255, 0.94);
  --panel-raised: #eef2f5;
  --border: #d8e0e6;
  --text: #003359;
  --text-muted: #536675;
  --text-faint: #7f909d;
  --accent-open: #52ae32;
  --accent-open-dim: rgba(82, 174, 50, 0.12);
  --accent-closed: #7f909d;
  --accent-warn: #a8701c;
  --accent-error: #b23d36;
  --topbar-bg: rgba(255, 255, 255, 0.92);
}

* { box-sizing: border-box; }

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1;
  padding: 6px 9px;
  border-radius: var(--radius);
  cursor: pointer;
}

.theme-toggle:hover { color: var(--text); border-color: var(--text-muted); }

.theme-toggle--login {
  position: absolute;
  top: 16px;
  right: 16px;
}

/* El atributo HTML `hidden` debe ganar siempre a cualquier `display`
   declarado por una clase (p. ej. `.add-device__form { display: flex }` o
   `.password-modal { display: flex }`). Sin esta regla, un elemento con
   `hidden` pero con `display` fijado por clase se muestra igualmente,
   porque en CSS una declaración de un autor siempre gana a la hoja de
   estilos por defecto del navegador, sea cual sea la especificidad. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  min-height: 100vh;
}

body {
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 92% 2%, rgba(82,174,50,.68) 0, rgba(82,174,50,.16) 16%, transparent 34%),
    linear-gradient(125deg, #003359 0%, #0065b0 55%, #0077a9 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -8%;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background:
    linear-gradient(58deg, transparent 0 31%, rgba(0,51,89,.82) 31% 44%, transparent 44% 100%),
    linear-gradient(122deg, transparent 0 53%, rgba(0,101,176,.72) 53% 67%, transparent 67% 100%);
  opacity: .78;
}

body::after {
  background: linear-gradient(135deg, transparent 0 49%, rgba(82,174,50,.10) 49% 53%, transparent 53% 100%);
}

:root[data-theme="light"] body {
  background:
    radial-gradient(circle at 94% 4%, rgba(82,174,50,.13) 0, rgba(82,174,50,.04) 16%, transparent 30%),
    linear-gradient(135deg, #ffffff 0%, #f7f8fa 64%, #edf3f7 100%);
}

:root[data-theme="light"] body::before {
  background:
    linear-gradient(58deg, transparent 0 34%, rgba(0,51,89,.055) 34% 46%, transparent 46% 100%),
    linear-gradient(122deg, transparent 0 55%, rgba(0,101,176,.06) 55% 69%, transparent 69% 100%);
  opacity: 1;
}

:root[data-theme="light"] body::after {
  background: linear-gradient(135deg, transparent 0 49%, rgba(82,174,50,.055) 49% 53%, transparent 53% 100%);
}

/* ---------- Topbar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--topbar-bg);
  box-shadow: 0 8px 28px rgba(0, 25, 45, .12);
  backdrop-filter: blur(4px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar__title {
  display: flex;
  align-items: center;
  gap: 14px;
}

.topbar__logo {
  display: block;
  width: 150px;
  max-width: 34vw;
  max-height: 58px;
  height: auto;
  object-fit: contain;
  object-position: left center;
  flex-shrink: 0;
  background: rgba(255,255,255,.96);
  padding: 7px 10px;
  border-radius: 4px;
}

.login-card__head .topbar__mark {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-open);
  box-shadow: 0 0 0 3px var(--accent-open-dim);
  flex-shrink: 0;
}

.topbar h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  margin: 0;
  letter-spacing: 0.01em;
}

.topbar__model {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.04em;
  margin-top: 2px;
}

.topbar__status {
  display: flex;
  align-items: center;
  gap: 28px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.stat__label {
  font-size: 0.68rem;
  color: var(--text-faint);
}

.stat__value {
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 500;
}

.conn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.conn__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-warn);
  transition: background 0.3s ease;
}

.conn.is-online .conn__dot { background: var(--accent-open); }
.conn.is-offline .conn__dot { background: var(--accent-error); }

.conn__label {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ---------- Layout ---------- */

.layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px;
}

.panel {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(0, 25, 45, .10);
  backdrop-filter: blur(5px);
}

/* ---------- Gateway & map ---------- */

.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px 0;
}

.panel__title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  margin: 0;
}

.panel__toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 5px 10px;
  border-radius: var(--radius);
  cursor: pointer;
}

.panel__toggle:hover { color: var(--text); border-color: var(--text-muted); }

.gateway-panel > .panel__title { padding: 16px 18px 0; }

.gateway-panel { margin-bottom: 16px; }

.gateway-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding: 14px 18px 18px;
}

.metric__value.is-good { color: var(--accent-open); }
.metric__value.is-warn { color: var(--accent-warn); }
.metric__value.is-bad { color: var(--accent-error); }
.metric__value.is-neutral { color: var(--text-muted); }

.map-panel { margin-bottom: 28px; overflow: hidden; }

#map {
  height: 320px;
  width: 100%;
  margin-top: 14px;
  filter: grayscale(0.15) contrast(1.05);
}

#map.is-hidden { display: none; }

.gw-status {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--accent-error);
  vertical-align: middle;
}

.offline-badge {
  align-self: flex-start;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: var(--radius);
  letter-spacing: 0.02em;
}

.offline-badge--device { color: var(--accent-error); background: rgba(201, 86, 79, 0.12); }
.offline-badge--gateway { color: var(--accent-warn); background: rgba(217, 154, 63, 0.12); }

.device-card__controls-label {
  font-size: 0.7rem;
  color: var(--text-faint);
  min-width: 18px;
}

.add-device__color input[type="color"] {
  padding: 3px;
  height: 34px;
  cursor: pointer;
}

/* ---------- Add device ---------- */

.add-device {
  padding: 4px;
  margin-bottom: 28px;
}

.add-device__toggle {
  width: 100%;
  padding: 14px 16px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  border-radius: var(--radius);
  transition: background 0.15s ease, color 0.15s ease;
}

.add-device__toggle:hover {
  background: var(--panel-raised);
  color: var(--text);
}

.add-device__plus {
  color: var(--accent-open);
  font-size: 1rem;
}

.add-device__form {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 4px 16px 18px;
  align-items: end;
}

.add-device__form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.72rem;
  color: var(--text-muted);
  flex: 1 1 220px;
}

.add-device__form input {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 10px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.add-device__form input:focus {
  outline: none;
  border-color: var(--accent-open);
}

.add-device__form input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.add-device__form button {
  background: var(--accent-open);
  color: #0c1211;
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  transition: filter 0.15s ease;
}

.add-device__form button:hover { filter: brightness(1.1); }

.add-device__form select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 10px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* ---------- User badge (topbar) ---------- */

.user-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.72rem;
}

.user-badge__name { color: var(--text); font-weight: 500; }

.user-badge__role {
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.62rem;
}

.user-badge button {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 4px 9px;
  border-radius: var(--radius);
  cursor: pointer;
}

.user-badge button:hover { color: var(--text); border-color: var(--text-muted); }

/* ---------- Login screen ---------- */

.login-screen {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-card__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 6px;
}

.login-card__head h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  margin: 0;
}

.login-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.login-card input {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 11px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.login-card input:focus {
  outline: none;
  border-color: var(--accent-open);
}

.login-card button[type="submit"] {
  background: var(--accent-open);
  color: #0c1211;
  border: none;
  padding: 11px 18px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: filter 0.15s ease;
}

.login-card button[type="submit"]:hover { filter: brightness(1.1); }
.login-card button[type="submit"]:disabled { opacity: 0.6; cursor: default; }

.login-card__error {
  color: var(--accent-error);
  font-size: 0.78rem;
  margin: 0;
}

.login-card__success {
  color: var(--accent-open);
  font-size: 0.78rem;
  margin: 0;
}

.login-card__hint {
  color: var(--text-muted);
  font-size: 0.76rem;
  line-height: 1.4;
  margin: -4px 0 0;
}

.login-card__back {
  color: var(--text-muted);
  font-size: 0.74rem;
  text-align: center;
  text-decoration: underline;
  margin-top: 2px;
}

.login-card__back:hover { color: var(--text); }

/* ---------- Users panel ---------- */

.users-panel {
  margin-top: 28px;
  margin-bottom: 28px;
  padding: 4px 16px 18px;
}

.comandos-panel {
  margin-top: 28px;
  margin-bottom: 28px;
  padding: 4px 16px 18px;
}

.pager {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 12px;
}

.pager__info {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.pager button:disabled { opacity: 0.4; cursor: default; }

.comandos-panel__hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 4px 0 14px;
}

.comando-estado {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  padding: 2px 8px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.comando-estado.is-ok { color: var(--accent-open); border-color: var(--accent-open-dim); }
.comando-estado.is-fail { color: var(--accent-error); }
.comando-estado.is-neutral { color: var(--text-muted); }

.users-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 0.8rem;
}

.users-table th {
  text-align: left;
  color: var(--text-faint);
  font-weight: 500;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}

.users-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}

.users-table select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 8px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.users-table__email {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 8px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  width: 100%;
  min-width: 140px;
}

.users-table__actions {
  display: flex;
  gap: 8px;
}

.users-table__actions button {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 5px 9px;
  border-radius: var(--radius);
  cursor: pointer;
}

.users-table__actions button:hover { color: var(--text); border-color: var(--text-muted); }
.users-table__actions button:disabled { opacity: 0.4; cursor: default; }

/* ---------- Password modal ---------- */

.password-modal {
  position: fixed;
  inset: 0;
  background: rgba(12, 18, 17, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  padding: 16px;
}

.password-modal__box {
  width: 100%;
  max-width: 320px;
  background: var(--panel-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.password-modal__title {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.password-modal__title strong { color: var(--text); }

.password-modal label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.password-modal input {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 10px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.password-modal input:focus {
  outline: none;
  border-color: var(--accent-open);
}

.password-modal__error {
  color: var(--accent-error);
  font-size: 0.74rem;
  margin: 0;
}

.password-modal__success {
  color: var(--accent-open);
  font-size: 0.74rem;
  margin: 0;
}

.password-modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.password-modal__actions button {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 8px 16px;
  border-radius: var(--radius);
  cursor: pointer;
}

#password-modal-cancel {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

#password-modal-cancel:hover { color: var(--text); border-color: var(--text-muted); }

#password-modal-save {
  background: var(--accent-open);
  color: #0c1211;
  border: none;
  font-weight: 600;
}

#password-modal-save:hover { filter: brightness(1.1); }
#password-modal-save:disabled { opacity: 0.6; cursor: default; }

/* ---------- Devices grid ---------- */

.devices {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.device-card {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-left: 3px solid var(--device-color, var(--border));
}

.device-card__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.device-card__name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 4px;
}

.device-card__eui {
  font-size: 0.7rem;
  color: var(--text-faint);
  letter-spacing: 0.02em;
}

.device-card__actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.device-card__title {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.device-card__drag-handle {
  color: var(--text-faint);
  cursor: grab;
  line-height: 1.4;
  user-select: none;
  padding-top: 1px;
}

.device-card[draggable="true"] { cursor: grab; }
.device-card[draggable="true"]:active { cursor: grabbing; }

.device-card.is-dragging {
  opacity: 0.4;
  border-style: dashed;
}

.device-card__remove,
.device-card__edit,
.device-card__reset {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  padding: 2px 6px;
}

.device-card__remove:hover { color: var(--accent-error); }
.device-card__edit:hover { color: var(--accent-open); }
.device-card__reset:hover { color: var(--accent-warn); }
.device-card__reset:disabled { opacity: 0.4; cursor: default; }

.add-device__hint {
  margin: -4px 0 4px;
  font-size: 0.78rem;
  color: var(--text-muted);
  flex-basis: 100%;
}

.add-device__hint strong { color: var(--text); }

.add-device__hint a {
  color: var(--accent-open);
  text-decoration: underline;
  cursor: pointer;
}

/* --- valve visual --- */

.valve-block {
  display: flex;
  align-items: center;
  gap: 14px;
}

.valve__pipe {
  flex-shrink: 0;
}

.valve__disc {
  transform-origin: 60px 20px;
  transition: transform 0.4s ease, fill 0.4s ease;
}

.valve.is-open .valve__disc { transform: rotate(90deg); fill: var(--accent-open); }
.valve.is-closed .valve__disc { transform: rotate(0deg); fill: var(--accent-closed); }
.valve.is-unknown .valve__disc { fill: var(--text-faint); }

.valve__flow { stroke: var(--accent-open); opacity: 0; transition: opacity 0.4s ease; }
.valve.is-open .valve__flow { opacity: 0.5; }

.valve__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.valve__state {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.valve.is-open .valve__state { color: var(--accent-open); }
.valve.is-closed .valve__state { color: var(--text-muted); }
.valve.is-unknown .valve__state { color: var(--text-faint); }

.valve__updated {
  font-size: 0.66rem;
  color: var(--text-faint);
}

.valve__countdown {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent-warn);
  font-family: var(--font-mono);
}

.valve__countdown.is-overdue { color: var(--accent-error); }

.valve__command-status {
  font-size: 0.7rem;
  font-weight: 500;
}

.valve__command-status.is-pending { color: var(--text-faint); }
.valve__command-status.is-failed { color: var(--accent-error); }

/* --- metrics row --- */

.device-card__metrics {
  display: flex;
  gap: 20px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.metric__label { font-size: 0.66rem; color: var(--text-faint); }
.metric__value { font-size: 0.85rem; color: var(--text); }
.metric__value.is-low { color: var(--accent-warn); }

/* --- controls --- */

.device-card__controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  row-gap: 8px;
}

.device-card__controls select,
.device-card__controls input[type="number"] {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 8px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.device-card__controls select { flex: 1 1 70px; }
.device-card__controls input[type="number"] { width: 68px; }

.hms-input {
  display: flex;
  align-items: center;
  gap: 3px;
}

.hms-input input[type="number"] {
  width: 36px;
  text-align: center;
  padding: 8px 2px;
}

.hms-input span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.device-card__controls button {
  background: var(--panel-raised);
  border: 1px solid var(--accent-open);
  color: var(--accent-open);
  padding: 8px 14px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.device-card__controls button:hover {
  background: var(--accent-open);
  color: #0c1211;
}

.device-card__controls button:disabled {
  opacity: 0.5;
  cursor: default;
  background: var(--panel-raised);
  color: var(--text-faint);
  border-color: var(--border);
}

/* ---------- Empty state ---------- */

.empty-state {
  text-align: center;
  color: var(--text-faint);
  font-size: 0.85rem;
  padding: 60px 20px;
}

@media (max-width: 560px) {
  .topbar { padding: 16px 18px; flex-wrap: wrap; gap: 12px; }
  .topbar__logo { width: 125px; max-width: 45vw; }
  .layout { padding: 18px; }
}


/* Branding Nexio */
.login-card__brand { display: flex; justify-content: center; margin-bottom: 18px; }
.login-card__logo { display: block; max-width: 220px; max-height: 70px; width: auto; height: auto; object-fit: contain; }

/* ---------- Responsive ---------- */

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    padding: 14px 16px;
    gap: 12px;
  }

  .topbar__title {
    min-width: 0;
    flex: 1 1 auto;
    gap: 10px;
  }

  .topbar__logo {
    width: 112px;
    max-width: 32vw;
    max-height: 48px;
    padding: 5px 7px;
  }

  .topbar h1 {
    font-size: 0.98rem;
    line-height: 1.2;
  }

  .topbar__model { font-size: 0.65rem; }

  .topbar__status {
    flex: 0 1 auto;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .conn { padding: 5px 8px; }
  .user-badge { max-width: 100%; flex-wrap: wrap; justify-content: flex-end; }

  .layout {
    width: 100%;
    max-width: 100%;
    padding: 18px 12px 28px;
  }

  .gateway-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 18px;
  }

  .panel__head {
    gap: 10px;
    flex-wrap: wrap;
  }

  .devices {
    grid-template-columns: minmax(0, 1fr);
  }

  .device-card__head {
    flex-wrap: wrap;
  }

  .users-panel,
  .comandos-panel {
    overflow-x: auto;
  }

  .users-table {
    min-width: 640px;
  }

  .add-device__form {
    padding-left: 10px;
    padding-right: 10px;
  }
}

@media (max-width: 480px) {
  .topbar {
    display: block;
  }

  .topbar__title {
    width: 100%;
  }

  .topbar__logo {
    width: 105px;
    max-width: 34vw;
  }

  .topbar__status {
    width: 100%;
    margin-top: 10px;
    justify-content: flex-start;
  }

  .user-badge {
    width: 100%;
    justify-content: flex-start;
  }

  .layout {
    padding: 12px 10px 24px;
  }

  .panel {
    border-radius: 4px;
  }

  .panel__head {
    padding-left: 12px;
    padding-right: 12px;
  }

  .gateway-metrics {
    grid-template-columns: 1fr 1fr;
    padding: 12px;
    gap: 12px;
  }

  #map {
    height: 280px;
  }

  .login-screen {
    padding: 16px;
    align-items: center;
  }

  .login-card {
    max-width: 100%;
    padding: 24px 18px;
  }
}

/* Logo de login sobre fondo blanco para mantener contraste en ambos temas. */
.login-card__brand {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 86px;
  margin-bottom: 4px;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(0, 51, 89, 0.10);
  border-radius: var(--radius);
}

.login-card__logo {
  display: block;
  max-width: 220px;
  max-height: 70px;
  width: auto;
  height: auto;
  object-fit: contain;
}