*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --hvac-ice: #b8e4f0;
  --hvac-amber: #e8a54b;
  --hvac-slate: #3d4f5f;
  --hvac-white: #f8fbfc;
}

body.hvac-body {
  font-family: 'Roboto', sans-serif;
  background: var(--hvac-white);
  color: var(--hvac-slate);
  line-height: 1.6;
}

h1, h2, h3 { font-family: 'Montserrat', sans-serif; font-weight: 700; }

.hvac-split-header {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  min-height: 120px;
}

.hvac-split-header__cool {
  background: linear-gradient(135deg, #7ec8e3, var(--hvac-ice));
  display: flex;
  align-items: center;
  justify-content: center;
}

.hvac-split-header__warm {
  background: linear-gradient(135deg, var(--hvac-amber), #d4882a);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hvac-split-header__label {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: #fff;
  font-size: 0.85rem;
}

.hvac-split-header__brand {
  background: var(--hvac-slate);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.25rem 1.5rem;
  text-align: center;
}

.hvac-split-header__eyebrow {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--hvac-ice);
  margin-bottom: 0.35rem;
}

.hvac-split-header__title {
  font-size: clamp(0.95rem, 2.5vw, 1.35rem);
  line-height: 1.3;
}

.hvac-dial-zone {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding: 3rem 5%;
  align-items: center;
  background: linear-gradient(90deg, var(--hvac-ice) 0%, var(--hvac-ice) 50%, #fde8c8 50%, #fde8c8 100%);
}

.hvac-dial-zone__copy h2 { margin-bottom: 1rem; color: var(--hvac-slate); }

.hvac-dial-zone__stats {
  list-style: none;
  display: flex;
  gap: 2rem;
  margin-top: 1.5rem;
}

.hvac-dial-zone__stats li {
  display: flex;
  flex-direction: column;
}

.hvac-dial-zone__stats span {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.7;
}

.hvac-dial {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.hvac-dial__ring {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: conic-gradient(from 200deg, var(--hvac-ice) 0deg, #fff 120deg, var(--hvac-amber) 240deg, var(--hvac-ice) 360deg);
  padding: 12px;
  position: relative;
  box-shadow: 0 8px 32px rgba(61, 79, 95, 0.2);
}

.hvac-dial__face {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--hvac-slate);
}

.hvac-dial__temp {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--hvac-slate);
}

.hvac-dial__mode {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--hvac-amber);
}

.hvac-dial__needle {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 90px;
  background: var(--hvac-slate);
  transform-origin: bottom center;
  transform: translate(-50%, -100%) rotate(25deg);
  border-radius: 2px;
  z-index: 2;
}

.hvac-dial__tick {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 2px;
  height: 12px;
  background: var(--hvac-slate);
  transform-origin: center 102px;
  transform: translateX(-50%) rotate(calc(var(--i) * 30deg - 90deg));
  opacity: 0.4;
}

.hvac-dial__zones {
  display: flex;
  gap: 0.5rem;
}

.hvac-dial__zone {
  font-family: 'Montserrat', sans-serif;
  border: none;
  padding: 0.5rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  border-radius: 20px;
  transition: transform 0.2s;
}

.hvac-dial__zone--cool { background: var(--hvac-ice); color: var(--hvac-slate); }
.hvac-dial__zone--warm { background: var(--hvac-amber); color: #fff; }
.hvac-dial__zone:hover { transform: scale(1.05); }
.hvac-dial__zone.is-active { outline: 3px solid var(--hvac-slate); }

.hvac-vent-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 3rem 5%;
  background: var(--hvac-slate);
}

.hvac-vent-grid__title {
  grid-column: 1 / -1;
  color: #fff;
  text-align: center;
  margin-bottom: 0.5rem;
}

.hvac-vent {
  background: #fff;
  padding: 1.25rem;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.hvac-vent__slats {
  height: 28px;
  margin-bottom: 1rem;
  background: repeating-linear-gradient(
    0deg,
    var(--hvac-slate) 0px,
    var(--hvac-slate) 3px,
    transparent 3px,
    transparent 8px
  );
  border: 2px solid var(--hvac-slate);
  border-radius: 2px;
}

.hvac-vent h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--hvac-slate);
}

.hvac-vent p { font-size: 0.9rem; }

.hvac-contact-panel {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2rem;
  padding: 3rem 5%;
}

.hvac-contact-panel address {
  font-style: normal;
  margin-top: 1rem;
  line-height: 1.8;
}

.hvac-contact-panel a { color: var(--hvac-amber); }

.hvac-form__field { margin-bottom: 1rem; }

.hvac-form__field label {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.hvac-form__field input,
.hvac-form__field textarea {
  width: 100%;
  padding: 0.65rem;
  border: 2px solid var(--hvac-ice);
  border-radius: 4px;
  font-family: inherit;
}

.hvac-form__field input:focus,
.hvac-form__field textarea:focus {
  outline: none;
  border-color: var(--hvac-amber);
}

.hvac-form__field--check {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0.5rem;
}

.hvac-form__field--check input { width: auto; margin-top: 0.2rem; }
.hvac-form__field--check label { flex: 1; font-weight: 400; font-family: 'Roboto', sans-serif; }

.hvac-form__error {
  display: block;
  color: #c0392b;
  font-size: 0.8rem;
  min-height: 1rem;
}

.hvac-form__submit {
  font-family: 'Montserrat', sans-serif;
  background: var(--hvac-slate);
  color: #fff;
  border: none;
  padding: 0.75rem 2rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 4px;
}

.hvac-form__submit:hover { background: var(--hvac-amber); }

.hvac-form__success {
  margin-top: 1rem;
  padding: 0.75rem;
  background: #d4edda;
  color: #155724;
  border-radius: 4px;
}

.hvac-legal {
  padding: 2rem 5%;
  border-top: 1px solid #e0e8ec;
}

.hvac-legal h2 { font-size: 1.1rem; margin-bottom: 0.75rem; }
.hvac-legal p { font-size: 0.9rem; max-width: 720px; }

.hvac-footer {
  background: var(--hvac-slate);
  color: #fff;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
}

.hvac-footer__nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0.75rem;
}

.hvac-footer__nav a { color: var(--hvac-ice); text-decoration: none; }
.hvac-footer__nav a:hover { color: var(--hvac-amber); }

@media (max-width: 900px) {
  .hvac-split-header { grid-template-columns: 1fr; }
  .hvac-dial-zone { grid-template-columns: 1fr; }
  .hvac-vent-grid { grid-template-columns: 1fr 1fr; }
  .hvac-contact-panel { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .hvac-vent-grid { grid-template-columns: 1fr; }
  .hvac-dial-zone__stats { flex-direction: column; gap: 1rem; }
}