:root {
  --ink: #1f2927;
  --muted: #6c7773;
  --paper: #f7f3e8;
  --panel: #fffaf0;
  --line: #ded5c3;
  --accent: #0f7b6c;
  --accent-dark: #07584d;
  --warm: #f1b84b;
  --cool: #6ebad3;
  --danger: #b84538;
  --shadow: 0 18px 50px rgba(42, 49, 45, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(15, 123, 108, 0.18), transparent 34%),
    linear-gradient(225deg, rgba(241, 184, 75, 0.18), transparent 30%),
    var(--paper);
  color: var(--ink);
  font-family: "Manrope", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.simulator-shell {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 28px;
}

.topbar,
.control-strip,
.workspace-grid {
  display: grid;
  gap: 16px;
}

.topbar {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  margin-bottom: 18px;
}

.eyebrow,
.card-label {
  color: var(--muted);
  display: block;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: "Space Grotesk", sans-serif;
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 4.5rem);
  line-height: 0.95;
}

h2 {
  font-size: 1.12rem;
}

.connection-pill,
.room-chip {
  align-items: center;
  background: rgba(255, 250, 240, 0.78);
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex;
  font-weight: 800;
  gap: 8px;
  padding: 10px 14px;
}

.status-dot {
  background: var(--warm);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(241, 184, 75, 0.2);
  height: 10px;
  width: 10px;
}

.connection-pill.is-online .status-dot {
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(15, 123, 108, 0.18);
}

.control-strip {
  grid-template-columns: 1.25fr repeat(3, 1fr);
  margin-bottom: 18px;
}

.pairing-card,
.metric-card,
.tool-card,
.room-panel {
  background: rgba(255, 250, 240, 0.88);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.pairing-card,
.metric-card {
  min-height: 124px;
  padding: 18px;
}

.pairing-card strong,
.metric-card strong {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-top: 4px;
}

.pairing-card small,
.metric-card small {
  color: var(--muted);
  display: block;
  font-weight: 700;
  margin-top: 2px;
}

.secondary-button,
.primary-button,
.icon-button {
  border: 0;
  border-radius: 8px;
  font-weight: 900;
}

.secondary-button {
  background: rgba(15, 123, 108, 0.1);
  color: var(--accent-dark);
  margin-top: 12px;
  padding: 9px 12px;
}

.primary-button {
  background: var(--accent);
  color: white;
  padding: 13px 16px;
}

.icon-button {
  background: #ede4d2;
  color: var(--ink);
  padding: 8px 10px;
}

.workspace-grid {
  align-items: start;
  grid-template-columns: minmax(0, 1fr) 390px;
}

.room-panel {
  min-height: 700px;
  overflow: hidden;
}

.room-toolbar {
  align-items: center;
  display: flex;
  justify-content: space-between;
  padding: 18px 20px;
}

.room-scene {
  --room-brightness: 0.82;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.35), transparent 40%),
    linear-gradient(180deg, #b7c7be 0 62%, #7f6b55 62% 100%);
  border-top: 1px solid var(--line);
  filter: brightness(var(--room-brightness));
  height: min(68vh, 650px);
  min-height: 560px;
  overflow: hidden;
  position: relative;
  transition: filter 450ms ease;
}

.wall-art {
  border: 10px solid rgba(73, 83, 79, 0.28);
  height: 140px;
  left: 11%;
  position: absolute;
  top: 15%;
  width: 190px;
}

.wall-art::after {
  background: linear-gradient(135deg, rgba(15, 123, 108, 0.5), rgba(241, 184, 75, 0.52));
  content: "";
  inset: 12px;
  position: absolute;
}

.window {
  background: #d8eef1;
  border: 12px solid rgba(75, 86, 81, 0.35);
  box-shadow: inset 0 0 35px rgba(110, 186, 211, 0.55);
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: 190px;
  position: absolute;
  right: 12%;
  top: 12%;
  width: 260px;
}

.window span:first-child {
  border-right: 8px solid rgba(75, 86, 81, 0.25);
}

.lamp-light {
  background: radial-gradient(circle, rgba(255, 224, 132, 0.74), rgba(255, 224, 132, 0.2) 38%, transparent 68%);
  height: 520px;
  left: 50%;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: -90px;
  transform: translateX(-50%);
  transition: opacity 450ms ease;
  width: 580px;
}

.lamp-light.is-on {
  opacity: 1;
}

.floor-shadow {
  background: radial-gradient(ellipse, rgba(34, 41, 38, 0.26), transparent 70%);
  bottom: 58px;
  height: 130px;
  left: 20%;
  position: absolute;
  width: 60%;
}

.device-layer {
  inset: 0;
  position: absolute;
}

.virtual-device {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: absolute;
  transform: translate(-50%, -50%);
}

.device-visual {
  align-items: center;
  background: #f6efe0;
  border: 3px solid rgba(31, 41, 39, 0.25);
  box-shadow: 0 14px 30px rgba(31, 41, 39, 0.18);
  display: flex;
  justify-content: center;
  position: relative;
}

.device-label {
  background: rgba(31, 41, 39, 0.78);
  border-radius: 999px;
  color: white;
  font-size: 0.76rem;
  font-weight: 900;
  max-width: 150px;
  overflow: hidden;
  padding: 6px 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.virtual-device.lamp .device-visual {
  border-radius: 50% 50% 45% 45%;
  height: 54px;
  width: 54px;
}

.virtual-device.lamp .device-visual::before {
  background: #3f4743;
  content: "";
  height: 44px;
  position: absolute;
  top: -44px;
  width: 4px;
}

.virtual-device.lamp.is-on .device-visual {
  background: #ffd76e;
  box-shadow: 0 0 38px rgba(255, 215, 110, 0.92);
}

.virtual-device.ac .device-visual {
  border-radius: 8px;
  height: 58px;
  width: 130px;
}

.virtual-device.ac .device-visual::before {
  background: linear-gradient(90deg, transparent, rgba(110, 186, 211, 0.65), transparent);
  bottom: -28px;
  content: "";
  height: 20px;
  left: 12px;
  opacity: 0;
  position: absolute;
  right: 12px;
}

.virtual-device.ac.is-on .device-visual {
  border-color: rgba(15, 123, 108, 0.58);
  box-shadow: 0 0 32px rgba(110, 186, 211, 0.7);
}

.virtual-device.ac.is-on .device-visual::before {
  animation: airPulse 1.4s ease-in-out infinite;
  opacity: 1;
}

.virtual-device.sensor .device-visual {
  border-radius: 8px;
  height: 58px;
  width: 58px;
}

.virtual-device.sensor .device-visual::after {
  background: var(--accent);
  border-radius: 50%;
  content: "";
  height: 12px;
  width: 12px;
}

.room-readout {
  background: rgba(255, 250, 240, 0.86);
  border: 1px solid var(--line);
  border-radius: 8px;
  bottom: 22px;
  display: flex;
  gap: 12px;
  left: 22px;
  padding: 12px 14px;
  position: absolute;
}

.room-readout span {
  font-weight: 900;
}

.side-panel {
  display: grid;
  gap: 16px;
}

.tool-card {
  padding: 18px;
}

.section-heading {
  align-items: start;
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
}

.device-form {
  display: grid;
  gap: 12px;
}

.room-form {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

label {
  color: var(--muted);
  display: grid;
  font-size: 0.82rem;
  font-weight: 900;
  gap: 6px;
}

input,
select {
  background: #fffdf7;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font-weight: 800;
  min-height: 42px;
  padding: 10px 11px;
}

.device-list,
.event-log {
  display: grid;
  gap: 10px;
  max-height: 250px;
  overflow: auto;
  padding-right: 3px;
}

.device-item {
  align-items: center;
  background: #fffdf7;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 12px;
}

.device-item strong,
.device-item span {
  display: block;
}

.device-item code {
  background: rgba(15, 123, 108, 0.1);
  border: 1px solid rgba(15, 123, 108, 0.24);
  border-radius: 6px;
  color: var(--accent-dark);
  display: inline-block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.82rem;
  font-weight: 800;
  margin-top: 8px;
  padding: 5px 8px;
}

.device-item span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
  margin-top: 2px;
}

.device-actions {
  align-items: center;
  display: flex;
  gap: 8px;
}

.toggle-button,
.step-button {
  background: #ede4d2;
  border: 0;
  border-radius: 8px;
  color: var(--ink);
  font-weight: 900;
  min-height: 36px;
  padding: 8px 10px;
}

.toggle-button.is-on {
  background: var(--accent);
  color: white;
}

.event-log {
  list-style: none;
  margin: 0;
  padding-left: 0;
}

.event-log li {
  background: #fffdf7;
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  padding: 9px 10px;
}

.event-log strong {
  color: var(--ink);
  display: block;
  font-size: 0.9rem;
}

@keyframes airPulse {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(12px);
  }
}

@media (max-width: 1080px) {
  .control-strip,
  .workspace-grid {
    grid-template-columns: 1fr 1fr;
  }

  .pairing-card {
    grid-column: span 2;
  }

  .room-panel {
    grid-column: span 2;
  }
}

@media (max-width: 720px) {
  .simulator-shell {
    padding: 16px;
  }

  .topbar,
  .control-strip,
  .workspace-grid {
    grid-template-columns: 1fr;
  }

  .pairing-card,
  .room-panel {
    grid-column: auto;
  }

  .room-scene {
    min-height: 520px;
  }

  .window {
    right: 6%;
    width: 190px;
  }

  .wall-art {
    left: 7%;
    width: 150px;
  }
}