:root {
  --ink: #17201b;
  --muted: #66716b;
  --line: #d8ded9;
  --surface: #f6f7f4;
  --brand: #ea5022;
  --brand-dark: #ea5022;
  --accent: #ea5022;
}

* {
  box-sizing: border-box;
}

body {
  color: var(--ink);
  background: #fff;
  font-family: "Montserrat", Arial, Helvetica, sans-serif;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.navbar-brand {
  color: var(--brand-dark);
}

.hero {
  padding: 64px 0 48px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.72)),
    url("house-image.jpg") center/cover;
}

.hero h1 {
  max-width: 780px;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.estimator-panel,
.enquiry-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 55px rgba(234, 80, 34, 0.14);
}

.result-grid span,
.material-box span {
  color: var(--muted);
  font-size: 0.92rem;
}

.result-grid span {
  font-size: 0.78rem;
  line-height: 1.25;
}

.section-pad {
  padding: 48px 0;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto;
  gap: 16px;
  align-items: end;
  margin-bottom: 16px;
}

.plot-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.map-shell {
  position: relative;
  min-height: 480px;
  height: min(68vh, 760px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #dfe6df;
}

.map-shell iframe,
.map-shell canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.map-shell canvas {
  z-index: 2;
  cursor: crosshair;
  touch-action: none;
}

.map-help {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
  max-width: 760px;
  padding: 12px 14px;
  color: #fff;
  background: rgba(23, 32, 27, 0.82);
  border-radius: 8px;
}

.map-help span {
  color: rgba(255, 255, 255, 0.84);
}

.estimator-panel,
.enquiry-panel {
  padding: 24px;
}

.estimator-panel {
  position: sticky;
  top: 88px;
  padding: 16px;
}

.estimator-panel h2 {
  margin-bottom: 6px;
  font-size: 1.7rem;
}

.estimator-panel p {
  margin-bottom: 12px;
}

.estimator-panel hr {
  margin: 12px 0;
}

.estimator-panel .mb-3 {
  margin-bottom: 12px !important;
}

.estimator-panel .form-label {
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.estimator-panel .form-text {
  margin-top: 4px;
  font-size: 0.78rem;
}

.estimator-panel .form-control,
.estimator-panel .input-group-text {
  min-height: 36px;
  padding: 6px 10px;
  font-size: 0.95rem;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.result-grid div {
  min-height: 78px;
  padding: 12px;
  background: rgba(234, 80, 34, 0.08);
  border: 1px solid rgba(234, 80, 34, 0.24);
  border-radius: 8px;
}

.result-grid strong {
  display: block;
  margin-top: 6px;
  font-size: 1.3rem;
}

.material-box {
  padding: 14px;
  color: #fff;
  background: var(--brand-dark);
  border-radius: 8px;
}

.material-box span {
  color: #fff;
}

.material-box strong {
  display: block;
  margin: 6px 0;
  font-size: 1.35rem;
}

.material-box small {
  display: block;
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.4;
}

.form-result {
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  white-space: pre-wrap;
}

.btn-dark {
  --bs-btn-bg: var(--brand);
  --bs-btn-border-color: var(--brand);
  --bs-btn-hover-bg: var(--brand);
  --bs-btn-hover-border-color: var(--brand);
  --bs-btn-active-bg: var(--brand);
  --bs-btn-active-border-color: var(--brand);
  background-color: var(--brand-dark);
  border-color: var(--brand-dark);
}

.btn-outline-dark {
  --bs-btn-color: var(--brand);
  --bs-btn-border-color: var(--brand);
  --bs-btn-hover-bg: var(--brand);
  --bs-btn-hover-border-color: var(--brand);
  --bs-btn-active-bg: var(--brand);
  --bs-btn-active-border-color: var(--brand);
  color: var(--brand-dark);
  border-color: var(--brand-dark);
}

.btn-success {
  --bs-btn-bg: var(--brand);
  --bs-btn-border-color: var(--brand);
  --bs-btn-hover-bg: var(--brand);
  --bs-btn-hover-border-color: var(--brand);
  --bs-btn-active-bg: var(--brand);
  --bs-btn-active-border-color: var(--brand);
  background-color: var(--brand);
  border-color: var(--brand);
}

@media (max-width: 991.98px) {
  .hero {
    padding-top: 40px;
  }

  .toolbar {
    grid-template-columns: 1fr;
  }

  .plot-actions {
    justify-content: flex-start;
  }

  .map-shell {
    min-height: 420px;
    height: 58vh;
  }

  .estimator-panel {
    position: static;
  }
}

@media (min-width: 768px) and (max-width: 1199.98px) {
  .result-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .estimator-panel .row.g-3 > .col-sm-6 {
    flex: 0 0 auto;
    width: 25%;
  }

  .material-box {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2px 18px;
    align-items: center;
  }

  .material-box strong {
    margin: 0;
  }

  .material-box small {
    grid-column: 1 / -1;
  }
}

@media (max-width: 575.98px) {
  .section-pad {
    padding: 34px 0;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }

  .map-shell {
    min-height: 360px;
  }
}