/* ==========================================================================
   Temperature Technologies - stylesheet
   Hand-written equivalent of the original Tailwind build (same values).
   Sections: 1 Reset  2 Design tokens  3 Layout  4 Header  5 Footer
             6 Buttons  7 Components  8 Forms  9 Responsive
   ========================================================================== */

/* 1. Reset ---------------------------------------------------------------- */
*, ::after, ::before {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border: 0 solid;
}
html {
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  tab-size: 4;
}
h1, h2, h3, h4, h5, h6 { font-size: inherit; font-weight: inherit; }
a { color: inherit; text-decoration: inherit; }
ol, ul { list-style: none; }
img { display: block; vertical-align: middle; max-width: 100%; height: auto; }
button, input, select, textarea {
  font: inherit;
  font-feature-settings: inherit;
  letter-spacing: inherit;
  color: inherit;
  border-radius: 0;
  background-color: transparent;
  opacity: 1;
}
button { cursor: pointer; }
textarea { resize: vertical; }
[hidden] { display: none !important; }

/* 2. Design tokens -------------------------------------------------------- */
:root {
  --radius: 0.5rem;
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);

  --background: oklch(1 0 0);
  --foreground: oklch(0.25 0.02 260);
  --card: oklch(1 0 0);
  --primary: oklch(0.3 0.09 260);
  --primary-foreground: oklch(0.99 0 0);
  --secondary: oklch(0.97 0.005 260);
  --muted-foreground: oklch(0.48 0.015 260);
  --accent: oklch(0.55 0.2 27);
  --accent-foreground: oklch(0.99 0 0);
  --border: oklch(0.929 0.013 255.508);
  --input: oklch(0.929 0.013 255.508);
  --ring: oklch(0.3 0.09 260);

  --font-sans: "Source Sans 3", system-ui, sans-serif;
}

* { border-color: var(--border); }

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
}

/* 3. Layout --------------------------------------------------------------- */
.page { display: flex; min-height: 100vh; flex-direction: column; }
.page > main { flex: 1 1 0%; }

.container {
  margin-inline: auto;
  width: 100%;
  max-width: 72rem;
  padding-inline: 1rem;
}
.container--narrow { max-width: 56rem; }

.section { }
.section--border-b { border-bottom: 1px solid var(--border); }
.section--border-t { border-top: 1px solid var(--border); }
.section--secondary { background-color: var(--secondary); }

.pad-y-12 { padding-block: 3rem; }
.pad-y-14 { padding-block: 3.5rem; }
.pad-y-10 { padding-block: 2.5rem; }

.grid { display: grid; }
.grid--center { align-items: center; }
.gap-8 { gap: 2rem; }

/* Typography */
.eyebrow {
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: var(--accent);
}
.h1-hero {
  margin-top: 0.5rem;
  font-size: 1.875rem;
  line-height: calc(2.25 / 1.875);
  font-weight: 700;
  color: var(--primary);
}
.h1-page {
  font-size: 1.875rem;
  line-height: calc(2.25 / 1.875);
  font-weight: 700;
  color: var(--primary);
}
.h2-section {
  font-size: 1.5rem;
  line-height: calc(2 / 1.5);
  font-weight: 700;
  color: var(--primary);
}
.lead {
  margin-top: 1rem;
  font-size: 1.125rem;
  line-height: calc(1.75 / 1.125);
  color: var(--muted-foreground);
}
.text-muted { color: var(--muted-foreground); }
.max-w-2xl { max-width: 42rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }

.link-more {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 600;
  color: var(--accent);
}
.link-more:hover { text-decoration: underline; }
.link-more--lg { margin-top: 1.5rem; }
.link-accent { font-weight: 600; color: var(--accent); }

/* 4. Header --------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--border);
  background-color: var(--background);
}
.site-header__bar {
  margin-inline: auto;
  display: flex;
  max-width: 72rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
}
.site-header__logo img { height: 3rem; width: auto; }

.site-nav { display: none; align-items: center; gap: 1.5rem; }
.site-nav a {
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  font-weight: 600;
  color: var(--muted-foreground);
}
.site-nav a:hover { color: var(--primary); }
.site-nav a.is-active { color: var(--primary); }

.site-header__cta { display: none; align-items: center; gap: 0.75rem; }
.site-header__phone {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  font-weight: 600;
  color: var(--primary);
}
.site-header__phone .icon { color: var(--accent); }

.menu-toggle { display: block; }
.menu-toggle .icon { width: 1.5rem; height: 1.5rem; color: var(--primary); }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }

.mobile-menu { border-top: 1px solid var(--border); padding: 1rem; }
.mobile-menu__list { display: flex; flex-direction: column; gap: 0.75rem; }
.mobile-menu__list a { font-weight: 600; color: var(--primary); }
.mobile-menu__list a.mobile-menu__call { color: var(--accent); }

/* Icons (inline SVG, lucide style) */
.icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 5. Footer --------------------------------------------------------------- */
.site-footer {
  background-color: var(--primary);
  color: var(--primary-foreground);
}
.site-footer__grid {
  margin-inline: auto;
  display: grid;
  max-width: 72rem;
  gap: 2rem;
  padding: 2.5rem 1rem;
}
.site-footer__brand {
  font-size: 1.125rem;
  line-height: calc(1.75 / 1.125);
  font-weight: 700;
}
.site-footer__col { font-size: 0.875rem; line-height: calc(1.25 / 0.875); }
.site-footer__col .strong { font-weight: 600; }
.site-footer a:hover { text-decoration: underline; }
.site-footer__muted { opacity: 0.8; }
.site-footer__brand + p {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  opacity: 0.8;
}
.site-footer__list { margin-top: 0.5rem; }
.site-footer__list li + li { margin-top: 0.25rem; }
.site-footer__copy {
  border-top: 1px solid color-mix(in oklab, var(--primary-foreground) 20%, transparent);
  padding-block: 1rem;
  text-align: center;
  font-size: 0.75rem;
  line-height: calc(1 / 0.75);
  opacity: 0.7;
}

/* 6. Buttons -------------------------------------------------------------- */
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn {
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
}
.btn:hover { opacity: 0.9; }
.btn--primary { background-color: var(--primary); color: var(--primary-foreground); }
.btn--accent { background-color: var(--accent); color: var(--accent-foreground); }
.btn--icon { display: inline-flex; align-items: center; gap: 0.5rem; }
.btn--sm { padding: 0.5rem 1rem; font-size: 0.875rem; line-height: calc(1.25 / 0.875); }

/* 7. Components ----------------------------------------------------------- */
.hero__img {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
}
.photo {
  aspect-ratio: 4 / 3;
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
}

.card-grid { display: grid; gap: 1rem; margin-top: 2rem; }
.project-grid { display: grid; gap: 1rem; margin-top: 2rem; }
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background-color: var(--card);
}
.card--accent-top { border-top: 4px solid var(--accent); }
.card--pad-5 { padding: 1.25rem; }
.card__title { font-weight: 700; color: var(--primary); }
.card__text {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  color: var(--muted-foreground);
}

.caption {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  color: var(--muted-foreground);
}

.cta-band {
  margin-inline: auto;
  display: flex;
  max-width: 72rem;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 3rem 1rem;
}

/* Services page */
.service-grid { display: grid; gap: 1.5rem; }
.service-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background-color: var(--card);
}
.service-card .photo { border-radius: 0; }
.service-card__body { padding: 1.25rem; }
.service-card__title {
  font-size: 1.125rem;
  line-height: calc(1.75 / 1.125);
  font-weight: 700;
  color: var(--primary);
}

/* About / contact page */
.info-grid {
  margin-inline: auto;
  display: grid;
  max-width: 72rem;
  gap: 1rem;
  padding: 2.5rem 1rem;
}
.info-card {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  border-radius: var(--radius-lg);
  background-color: var(--card);
  padding: 1.25rem;
}
@media (hover: hover) {
  a.info-card:hover {
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  }
}
.info-card .icon { margin-top: 0.125rem; width: 1.25rem; height: 1.25rem; color: var(--accent); }
.info-card__title { font-weight: 700; color: var(--primary); }
.info-card__text {
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  color: var(--muted-foreground);
}
.break-all { word-break: break-all; }

.form-grid { display: grid; gap: 1.5rem; margin-top: 2rem; }
.area-grid { display: grid; gap: 1rem; margin-top: 1.5rem; }
.area-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

/* 8. Forms ---------------------------------------------------------------- */
.request-form {
  scroll-margin-top: 6rem;
  border: 1px solid var(--border);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  background-color: var(--card);
  padding: 1.5rem;
}
.request-form__title {
  font-size: 1.25rem;
  line-height: calc(1.75 / 1.25);
  font-weight: 700;
  color: var(--primary);
}
.request-form__fields { margin-top: 1rem; }
.request-form__fields > * + * { margin-top: 0.75rem; }
.field {
  display: block;
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  font-weight: 500;
  color: var(--foreground);
}
.field .req { color: var(--accent); }
.field__control {
  margin-top: 0.25rem;
  width: 100%;
  border: 1px solid var(--input);
  border-radius: var(--radius-md);
  background-color: var(--background);
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  color: var(--foreground);
}
.field__control:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--ring);
}
.request-form__submit {
  margin-top: 1.25rem;
  width: 100%;
  border-radius: var(--radius-md);
  background-color: var(--primary);
  padding: 0.625rem 1rem;
  font-weight: 600;
  color: var(--primary-foreground);
}
.request-form__submit:hover { opacity: 0.9; }
.request-form__note {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  color: var(--muted-foreground);
}

/* 9. Responsive (Tailwind breakpoints: sm 40rem, md 48rem, lg 64rem) ------ */
@media (width >= 40rem) {
  .card-grid, .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .area-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (width >= 48rem) {
  .site-header__logo img { height: 3.5rem; }
  .site-nav { display: flex; }
  .menu-toggle, .mobile-menu { display: none !important; }

  .site-footer__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--md-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--md-3, .project-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .info-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md-pad-y-16 { padding-block: 4rem; }

  .h1-hero { font-size: 3rem; line-height: 1; }
  .h1-page--md { font-size: 2.25rem; line-height: calc(2.5 / 2.25); }
  .h2-section--md { font-size: 1.875rem; line-height: calc(2.25 / 1.875); }
  .cta-band { flex-direction: row; align-items: center; }
}
@media (width >= 64rem) {
  .site-header__cta { display: flex; }
  .card-grid--3, .service-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .form-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}