:root {
  color-scheme: light;
  --bg-top: #f6efe4;
  --bg-bottom: #dfe7dd;
  --surface: rgba(255, 252, 247, 0.82);
  --surface-strong: #fffaf2;
  --ink: #243028;
  --muted: #5f6c63;
  --accent: #b9622a;
  --accent-strong: #93471b;
  --accent-soft: rgba(185, 98, 42, 0.14);
  --border: rgba(36, 48, 40, 0.1);
  --shadow: 0 24px 60px rgba(57, 44, 28, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.75), transparent 36%),
    linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: 20rem;
  height: 20rem;
  border-radius: 50%;
  filter: blur(24px);
  opacity: 0.45;
  pointer-events: none;
  z-index: 0;
}

body::before {
  top: -4rem;
  right: -6rem;
  background: rgba(255, 213, 163, 0.8);
}

body::after {
  bottom: -5rem;
  left: -5rem;
  background: rgba(184, 211, 196, 0.8);
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.hero-card,
.control-card {
  backdrop-filter: blur(18px);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.9fr);
  gap: 1.5rem;
  padding: 2rem;
  border-radius: 28px;
}

.eyebrow,
.section-label,
.panel-label {
  margin: 0 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  color: var(--muted);
}

h1,
h2,
.temperature-value {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 0.95;
}

h2 {
  font-size: 1.5rem;
}

.intro,
.card-copy,
.temperature-trend {
  color: var(--muted);
  line-height: 1.6;
}

.intro {
  max-width: 50ch;
  margin: 1rem 0 0;
}

.temperature-panel {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem;
  border-radius: 22px;
  background: linear-gradient(180deg, var(--surface-strong), rgba(255, 246, 234, 0.85));
}

.temperature-value {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  font-size: clamp(3rem, 8vw, 4.75rem);
  line-height: 0.9;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.control-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.5rem;
  border-radius: 24px;
}

.wide-card {
  grid-column: 1 / -1;
}

.card-heading {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(95, 108, 99, 0.12);
  color: var(--ink);
  font-size: 0.92rem;
}

.status-pill.is-on {
  background: rgba(77, 138, 95, 0.18);
}

.status-pill.is-off {
  background: rgba(130, 93, 70, 0.18);
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  width: fit-content;
  cursor: pointer;
}

.toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-track {
  position: relative;
  width: 3.8rem;
  height: 2.1rem;
  border-radius: 999px;
  background: rgba(95, 108, 99, 0.28);
  transition: background 180ms ease;
}

.toggle-track::after {
  content: "";
  position: absolute;
  top: 0.22rem;
  left: 0.22rem;
  width: 1.66rem;
  height: 1.66rem;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 6px 18px rgba(36, 48, 40, 0.18);
  transition: transform 180ms ease;
}

.toggle input:checked + .toggle-track {
  background: linear-gradient(90deg, var(--accent), #d37f3c);
}

.toggle input:checked + .toggle-track::after {
  transform: translateX(1.7rem);
}

.toggle-copy {
  font-weight: 600;
}

.mode-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.mode-button {
  border: 0;
  border-radius: 16px;
  padding: 0.9rem 1rem;
  background: rgba(95, 108, 99, 0.12);
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.mode-button:hover,
.mode-button:focus-visible {
  transform: translateY(-1px);
}

.mode-button.is-active {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fffdf8;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
}

.summary-grid div {
  padding: 1rem;
  border-radius: 18px;
  background: rgba(255, 250, 242, 0.7);
}

.summary-grid dt {
  color: var(--muted);
  font-size: 0.9rem;
}

.summary-grid dd {
  margin: 0.45rem 0 0;
  font-size: 1.15rem;
  font-weight: 700;
}

@media (max-width: 820px) {
  .hero-card,
  .control-grid,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .app-shell {
    width: min(100%, calc(100% - 1rem));
    padding-top: 1rem;
  }

  .hero-card,
  .control-card {
    border-radius: 22px;
  }
}