:root {
  --page: #f1f2f4;
  --card: #ffffff;
  --card-border: #eceef1;
  --card-shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 12px 32px rgba(15, 23, 42, .08);
  --text: #374151;
  --text-strong: #475569;
  --muted: #9ca3af;
  --btn: #f7f7f8;
  --btn-hover: #f0f1f3;
  --btn-border: #e3e5e8;
  --lcd: #eef0f2;
  --lcd-grid: rgba(15, 23, 42, .045);
  --lcd-border: #e1e4e8;
  --lcd-text: #4a5568;
  --green: #4a9150;
  --green-bg: #eef7ee;
  --green-border: #a9d6ac;
  --blue: #3b6cf6;
  --blue-bg: #eef4ff;
  --blue-border: #bcd2fd;
  --red: #c2413b;
  --amber: #c98a12;
  --radius-card: 32px;
  --radius-lcd: 24px;
  --radius-btn: 16px;
  font-family: 'Outfit', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body { margin: 0; }

body {
  min-height: 100dvh;
  background: var(--page);
  color: var(--text);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: max(16px, env(safe-area-inset-top)) 16px max(16px, env(safe-area-inset-bottom));
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

@media (min-height: 860px) {
  body { align-items: center; }
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  padding: 0;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}

button:disabled { cursor: not-allowed; }

button:focus-visible, select:focus-visible, input:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

svg.i { width: 1em; height: 1em; flex: none; display: block; }

/* ---------- Card ---------- */

.remote {
  width: 100%;
  max-width: 400px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  box-shadow: var(--card-shadow);
  padding: 24px 24px 18px;
  position: relative;
}

.demo-banner {
  font-size: 12px;
  font-weight: 500;
  text-align: center;
  color: var(--amber);
  margin: -8px 0 12px;
}

/* ---------- LCD display ---------- */

.display {
  position: relative;
  aspect-ratio: 680 / 438;
  border-radius: var(--radius-lcd);
  border: 1px solid var(--lcd-border);
  background-color: var(--lcd);
  background-image:
    linear-gradient(var(--lcd-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--lcd-grid) 1px, transparent 1px);
  background-size: 9px 9px;
  box-shadow: inset 0 2px 6px rgba(15, 23, 42, .06);
  color: var(--lcd-text);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: opacity .25s;
}

.display-temp {
  display: flex;
  align-items: flex-start;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.045em;
  margin-top: -6px;
  font-variant-numeric: tabular-nums;
}

.temp-value { font-size: clamp(72px, 26vw, 104px); }

.temp-unit {
  font-size: clamp(28px, 9vw, 38px);
  font-weight: 600;
  letter-spacing: 0;
  margin-top: .32em;
  margin-left: .04em;
}

.display-off {
  display: none;
  font-size: clamp(48px, 16vw, 64px);
  font-weight: 700;
  letter-spacing: .04em;
  opacity: .35;
}

.display-bottom {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 18px;
  font-weight: 600;
}

.display-fan { display: inline-flex; align-items: center; gap: 6px; }
.display-fan svg.i { font-size: 22px; }

.display.off .display-temp,
.display.off .display-bottom { display: none; }
.display.off .display-off { display: block; }

.divider {
  border: 0;
  border-top: 1px solid var(--card-border);
  margin: 20px 0;
}

/* ---------- Primary row ---------- */

.primary-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}

.round-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.round {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 28px;
  border: 1px solid;
  transition: transform .08s, background-color .2s, border-color .2s, color .2s;
}

.round:active { transform: scale(.94); }

.round-fan { background: var(--blue-bg); border-color: var(--blue-border); color: var(--blue); }

.round-power { background: var(--green-bg); border-color: var(--green-border); color: var(--green); }
.round-power.off { background: var(--btn); border-color: var(--btn-border); color: var(--muted); }

.round-label { font-size: 15px; font-weight: 500; color: var(--text); opacity: .85; }

.rocker {
  width: 104px;
  height: 100px;
  border-radius: 20px;
  background: var(--btn);
  border: 1px solid var(--btn-border);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  overflow: hidden;
}

.rocker-btn {
  flex: 1;
  display: grid;
  place-items: center;
  font-size: 20px;
  color: var(--text);
  transition: background-color .15s;
}

.rocker-btn:active:not(:disabled) { background: var(--btn-hover); }

.rocker-label {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- Swing / Turbo ---------- */

.wide-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

.wide-row.single { grid-template-columns: 1fr; }

.wide {
  height: 44px;
  border-radius: var(--radius-btn);
  background: var(--btn);
  border: 1px solid var(--btn-border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 500;
  transition: transform .08s, background-color .2s, border-color .2s, color .2s;
}

.wide svg.i { font-size: 18px; opacity: .8; }
.wide .wide-value { font-size: 13px; color: var(--muted); font-weight: 500; }
.wide:active:not(:disabled) { transform: scale(.98); }

/* ---------- Segmented groups ---------- */

.group { margin-top: 18px; }

.group-title {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.seg {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.seg-btn {
  min-height: 40px;
  border-radius: 12px;
  background: var(--btn);
  border: 1px solid var(--btn-border);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 4px 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: transform .08s, background-color .2s, border-color .2s, color .2s;
}

.seg-btn.has-icon { min-height: 48px; font-size: 12px; }

.seg.seg-row { grid-template-columns: repeat(var(--cols), minmax(0, 1fr)); gap: 6px; }
.seg.seg-row .seg-btn { font-size: 11px; padding: 4px 0; }
.seg.seg-row .bars { height: 15px; }

.seg.seg-thirds { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.seg.seg-thirds > * { grid-column: span 2; }
.seg.seg-thirds > :nth-child(4):nth-last-child(2),
.seg.seg-thirds > :nth-child(5):nth-last-child(1) { grid-column: span 3; }

.bars { width: auto; height: 16px; display: block; flex: none; }
.bars .bar-off { opacity: .22; }
.seg-btn .bars { height: 18px; }
.display-fan .bars { height: 20px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.seg-btn svg.i { font-size: 16px; }
.seg-btn:active:not(:disabled) { transform: scale(.96); }

.active {
  background: var(--green-bg) !important;
  border-color: var(--green-border) !important;
  color: var(--green) !important;
}

.flash { animation: flash .5s ease-out; }

@keyframes flash {
  0% { background: var(--green-bg); border-color: var(--green-border); color: var(--green); }
}

/* Power off: dim everything except power */
.remote.is-off .primary-row .rocker,
.remote.is-off #fanWrap,
.remote.is-off .wide-row,
.remote.is-off .group { opacity: .45; }

/* ---------- Footer ---------- */

.footer {
  margin-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 24px;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  min-width: 0;
  text-align: left;
}

.status span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
  flex: none;
}

.status-dot.ok { background: var(--green); }
.status-dot.busy { background: var(--blue); animation: pulse 1s ease-in-out infinite; }
.status-dot.warn { background: var(--amber); }
.status-dot.err { background: var(--red); }

@keyframes pulse { 50% { opacity: .3; } }

/* ---------- Controlled AC ---------- */

.ac-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  padding: 0 4px 0 6px;
}

.ac-info { display: flex; flex-direction: column; gap: 1px; min-width: 0; flex: 1; }

.ac-info strong {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-strong);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ac-info small {
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ac-switch {
  width: 40px;
  height: 40px;
  font-size: 18px;
  border: 1px solid var(--btn-border);
  color: var(--text-strong);
  flex: none;
  transition: transform .08s, background-color .15s;
}

.ac-switch:hover { background: var(--btn-hover); }
.ac-switch:active { transform: scale(.94); }

/* ---------- Settings sheet ---------- */

.sheet {
  border: 0;
  padding: 0;
  width: min(440px, 100%);
  max-width: 100%;
  margin: auto auto 0;
  border-radius: 24px 24px 0 0;
  background: var(--card);
  color: var(--text);
  box-shadow: 0 -8px 40px rgba(0, 0, 0, .2);
}

@media (min-width: 520px) {
  .sheet { margin: auto; border-radius: 24px; }
}

.sheet::backdrop { background: rgba(15, 23, 42, .35); backdrop-filter: blur(2px); }

.sheet-body {
  padding: 20px 20px max(20px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sheet-head { display: flex; align-items: center; justify-content: space-between; }
.sheet-head h2 { margin: 0; font-size: 20px; font-weight: 600; }

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 20px;
  background: var(--btn);
}

.session-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: min(60dvh, 480px);
  overflow-y: auto;
  margin: 0 -4px;
  padding: 0 4px;
}

.sheet-hint { margin: 8px 0; font-size: 14px; color: var(--muted); }

.session-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-btn);
  background: var(--btn);
  border: 1px solid var(--btn-border);
  text-align: left;
  transition: transform .08s, background-color .15s, border-color .15s;
}

.session-item:hover { background: var(--btn-hover); }
.session-item:active { transform: scale(.99); }

.session-item.selected {
  background: var(--green-bg);
  border-color: var(--green-border);
}

.session-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 20px;
  background: var(--card);
  border: 1px solid var(--btn-border);
  color: var(--text-strong);
  flex: none;
}

.session-item.selected .session-icon { color: var(--green); border-color: var(--green-border); }

.session-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; flex: 1; }
.session-text strong { font-size: 16px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.session-text small { font-size: 13px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.session-node {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  flex: none;
}

.session-node::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.session-node.online { color: var(--green); }
.session-node.offline { color: var(--muted); }

.sheet-error {
  margin: 0;
  font-size: 14px;
  color: var(--red);
  background: color-mix(in srgb, var(--red) 10%, transparent);
  padding: 10px 12px;
  border-radius: 12px;
}

.sheet { max-height: 92dvh; overflow-y: auto; }

/* ---------- Forms ---------- */

.field { display: flex; flex-direction: column; gap: 6px; margin: 0; }
.field > span:first-child { font-size: 13px; font-weight: 600; color: var(--muted); }

.field input {
  font: inherit;
  font-size: 16px;
  color: var(--text);
  height: 48px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid var(--btn-border);
  background: var(--btn);
  width: 100%;
  transition: border-color .15s, background-color .15s;
}

.field input:focus { outline: none; border-color: var(--green-border); background: var(--card); box-shadow: 0 0 0 3px var(--green-bg); }
.field input:disabled { color: var(--muted); }

.password-wrap { position: relative; display: block; }
.password-wrap input { padding-right: 52px; }

.eye-btn {
  position: absolute;
  top: 50%;
  right: 4px;
  transform: translateY(-50%);
  width: 44px;
  height: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 20px;
  color: var(--muted);
  transition: color .15s, background-color .15s;
}

.eye-btn:hover { color: var(--text-strong); background: var(--btn-hover); }
.eye-btn[aria-pressed="true"] { color: var(--green); }

.primary-btn {
  height: 48px;
  padding: 0 18px;
  border-radius: 14px;
  background: var(--green);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  transition: transform .08s, opacity .15s;
}

.primary-btn:active:not(:disabled) { transform: scale(.98); }
.primary-btn:disabled { opacity: .55; }

.ghost-btn {
  height: 48px;
  padding: 0 18px;
  border-radius: 14px;
  background: var(--btn);
  border: 1px solid var(--btn-border);
  font-size: 16px;
  font-weight: 500;
}

.link-btn { font-size: 14px; font-weight: 600; color: var(--green); padding: 6px 0; }

.danger-link {
  align-self: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--red);
  padding: 8px 12px;
}

.form-actions { display: grid; grid-template-columns: 1fr 2fr; gap: 10px; }
.seg.seg-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

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

.login { padding-top: 36px; padding-bottom: 28px; align-self: center; }

.login-head { text-align: center; margin-bottom: 28px; }

.login-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  border-radius: 20px;
  display: grid;
  place-items: center;
  font-size: 32px;
  color: var(--green);
  background: var(--green-bg);
  border: 1px solid var(--green-border);
}

.login-head h1 { margin: 0; font-size: 26px; font-weight: 700; color: var(--text-strong); letter-spacing: -0.01em; }
.login-head p { margin: 6px 0 0; font-size: 15px; color: var(--muted); }

.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-form .primary-btn { margin-top: 4px; }
.login-demo { text-align: center; color: var(--amber); margin: 0; font-size: 13px; }

/* ---------- Account + user management ---------- */

.account-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--card-border);
  font-size: 14px;
  color: var(--muted);
}

.account-bar strong { color: var(--text); font-weight: 600; }
.account-actions { display: flex; gap: 16px; flex: none; }

.admin-list, .user-form { display: flex; flex-direction: column; gap: 14px; }
.user-list { display: flex; flex-direction: column; gap: 10px; }

.user-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-btn);
  background: var(--btn);
  border: 1px solid var(--btn-border);
  text-align: left;
}

.user-item:active { transform: scale(.99); }

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 17px;
  font-weight: 600;
  color: var(--blue);
  background: var(--blue-bg);
  border: 1px solid var(--blue-border);
  flex: none;
}

.you { font-weight: 500; color: var(--muted); font-size: 13px; }

.badge {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--btn-border);
  color: var(--muted);
  flex: none;
}

.badge.admin { color: var(--green); background: var(--green-bg); border-color: var(--green-border); }

.ac-checks { display: flex; flex-direction: column; gap: 8px; }

/* ---------- Offline ---------- */

.offline {
  align-self: center;
  max-width: 320px;
  padding: 24px 16px;
  text-align: center;
}

.offline-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 40px;
  color: var(--muted);
  background: var(--card);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
}

.offline h1 { margin: 0; font-size: 22px; font-weight: 700; color: var(--text-strong); }
.offline p { margin: 8px 0 0; font-size: 15px; line-height: 1.5; color: var(--muted); }

@media (max-width: 360px) {
  .remote { padding: 18px 16px 14px; }
  .seg { gap: 6px; }
  .wide-row { gap: 10px; }
  .rocker { width: 92px; }
}