/* ============================================================
   RUPERT HYDRAULICS — one-page site
   Palette drawn from logo: deep navy + charcoal, safety amber accent
   No external dependencies: system fonts only
   ============================================================ */

:root {
  --navy: #1c3263;          /* logo navy */
  --navy-deep: #12203f;     /* darker shade for panels */
  --navy-ink: #0c1730;      /* near-black navy */
  --charcoal: #2e3238;      /* logo secondary text */
  --steel: #5d6b85;
  --line: #d8dde8;
  --paper: #f4f5f8;         /* off-white background */
  --white: #ffffff;
  --amber: #ffb400;         /* safety accent */
  --amber-dark: #e29d00;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
               "Liberation Mono", monospace;

  --container: 1180px;
  --radius: 3px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--charcoal);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--navy); }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ---------- shared: hazard stripe ---------- */
.hazard-strip {
  height: 8px;
  background: repeating-linear-gradient(
    -45deg,
    var(--amber) 0 14px,
    var(--navy-ink) 14px 28px
  );
}

/* ---------- shared: eyebrow / section headings ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 18px;
}
.eyebrow--light { color: var(--amber); }
.eyebrow__rule {
  display: inline-block;
  width: 34px;
  height: 2px;
  background: currentColor;
  flex: none;
}

.section { padding: 96px 0; }

.section__head { max-width: 720px; margin-bottom: 56px; }

.section__title {
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.015em;
  text-transform: uppercase;
  color: var(--navy);
}
.section__title--light { color: var(--white); }

.section__lead {
  margin-top: 18px;
  font-size: 1.06rem;
  color: var(--steel);
}
.emergency .section__lead,
.about .section__lead { color: #aab6cf; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease,
              color .18s ease, transform .12s ease;
}
.btn:active { transform: translateY(1px); }

.btn--amber {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--navy-ink);
}
.btn--amber:hover { background: var(--amber-dark); border-color: var(--amber-dark); }

.btn--ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--white);
}
.btn--ghost:hover { border-color: var(--amber); color: var(--amber); }

.btn--lg { padding: 16px 30px; font-size: 0.98rem; }
.btn--block { width: 100%; }
.btn--nav { padding: 10px 18px; font-size: 0.8rem; }

.icon { width: 1.15em; height: 1.15em; fill: currentColor; flex: none; }

/* ---------- top bar ---------- */
.topbar {
  background: var(--navy-ink);
  color: #c6d0e4;
  font-size: 0.82rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 38px;
  flex-wrap: wrap;
  padding-block: 4px;
}
.topbar__note { display: flex; align-items: center; gap: 8px; }
.topbar__phone {
  color: var(--amber);
  font-family: var(--font-mono);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.04em;
}
.topbar__phone:hover { text-decoration: underline; }

.blink-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--amber);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(12, 23, 48, 0.04);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
}
.brand { display: inline-flex; align-items: center; }
.brand__logo { height: 53px; width: auto; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.site-nav a:not(.btn) {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--charcoal);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.site-nav a:not(.btn):hover { color: var(--navy); border-bottom-color: var(--amber); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 3px;
  background: var(--navy);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(63, 94, 165, 0.35), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 55%, var(--navy-ink) 100%);
  color: var(--white);
  overflow: hidden;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.25));
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: center;
  padding-block: 96px 110px;
}

.hero__title {
  font-size: clamp(2rem, 3.9vw, 2.95rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.hero__title-accent { color: var(--amber); }

.hero__lead {
  margin-top: 24px;
  max-width: 54ch;
  font-size: 1.1rem;
  color: #c3cde2;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 44px;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.hero__specs li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 28px 0 0;
  margin-right: 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}
.hero__specs li:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.spec__num {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.02em;
}
.spec__label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #93a2c2;
}

/* schematic figure */
.hero__schematic {
  position: relative;
  border: 1px solid rgba(122, 146, 196, 0.3);
  background: rgba(9, 17, 36, 0.45);
  padding: 10px;
}
.hero__schematic::before,
.hero__schematic::after {
  content: "";
  position: absolute;
  width: 18px; height: 18px;
  border: 2px solid var(--amber);
}
.hero__schematic::before { top: -2px; left: -2px; border-right: 0; border-bottom: 0; }
.hero__schematic::after  { bottom: -2px; right: -2px; border-left: 0; border-top: 0; }

.hero__schematic svg { width: 100%; height: auto; display: block; }

.sch-mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  fill: #7a92c4;
}
.sch-mono--amber { fill: var(--amber); }

.hero__schematic-tag {
  margin-top: 10px;
  padding: 8px 4px 2px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #7a92c4;
  border-top: 1px dashed rgba(122, 146, 196, 0.3);
}

/* ---------- stat strip ---------- */
.statstrip {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.statstrip__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: 30px 26px;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: 0; }
.stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.01em;
}
.stat__label {
  display: block;
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--steel);
  line-height: 1.45;
}

/* ---------- services cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--navy);
  padding: 30px 26px 28px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(12, 23, 48, 0.1);
  border-top-color: var(--amber);
}
.card--flag { border-top-color: var(--amber); }
.card--flag::after {
  content: "24 HR";
  position: absolute;
  top: 14px; right: 14px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--navy-ink);
  background: var(--amber);
  padding: 4px 8px;
}

.card__index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--steel);
  margin-bottom: 18px;
}
.card__icon {
  width: 38px; height: 38px;
  fill: var(--navy);
  margin-bottom: 16px;
}
.card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--navy);
  line-height: 1.3;
  margin-bottom: 10px;
}
.card p { font-size: 0.93rem; color: var(--steel); }

/* ---------- emergency ---------- */
.emergency {
  background:
    radial-gradient(900px 420px at 15% 0%, rgba(63, 94, 165, 0.3), transparent 60%),
    var(--navy-deep);
  color: var(--white);
}
.emergency .container { padding-block: 96px; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  list-style: none;
  counter-reset: step;
}
.step {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  padding: 30px 26px;
}
.step__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--amber);
  margin-bottom: 14px;
}
.step h3 {
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 10px;
}
.step p { font-size: 0.93rem; color: #aab6cf; }

.emergency__cta {
  margin-top: 56px;
  text-align: center;
  border: 1px dashed rgba(255, 180, 0, 0.5);
  padding: 34px 24px;
}
.emergency__cta-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #93a2c2;
  margin-bottom: 8px;
}
.emergency__phone {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4.5vw, 2.6rem);
  font-weight: 700;
  color: var(--amber);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.emergency__phone:hover { text-decoration: underline; }

/* ---------- coverage ---------- */
.coverage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 64px;
  align-items: center;
}

.coverage__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
  list-style: none;
  margin-top: 28px;
  max-width: 420px;
}
.coverage__list li {
  position: relative;
  padding-left: 22px;
  font-weight: 600;
  color: var(--charcoal);
  font-size: 0.95rem;
}
.coverage__list li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 10px; height: 10px;
  background: var(--amber);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}
.coverage__note {
  margin-top: 26px;
  font-size: 0.9rem;
  color: var(--steel);
  font-style: italic;
}

.coverage__map {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 18px;
}
.coverage__map svg { width: 100%; height: auto; }
.map-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  fill: var(--steel);
}
.map-label--home { font-weight: 700; fill: var(--navy); }
.sch-mono--map text {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  fill: rgba(28, 50, 99, 0.4);
}
.coverage__map-tag {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
  text-align: center;
}

/* ---------- about ---------- */
.about {
  background: var(--navy-ink);
  color: #c3cde2;
  border-top: 3px solid var(--amber);
}
.about__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 64px;
  padding-block: 96px;
}
.about__copy p { margin-top: 18px; max-width: 60ch; }
.about__copy p:first-of-type { margin-top: 26px; }

.about__points {
  list-style: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
}
.about__points li {
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.95rem;
}
.about__points li:first-child { border-top: 1px solid rgba(255, 255, 255, 0.1); }
.about__point-key {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 4px;
}

/* ---------- contact ---------- */
.section--contact { background: var(--paper); }

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: 40px;
  align-items: start;
}

.contact__form {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--navy);
  padding: 36px 32px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 7px;
}
.req { color: var(--amber-dark); }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: 0.95rem;
  color: var(--charcoal);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(28, 50, 99, 0.12);
}
.field input.is-invalid,
.field select.is-invalid,
.field textarea.is-invalid {
  border-color: #c43c1f;
  box-shadow: 0 0 0 3px rgba(196, 60, 31, 0.12);
}

.form-error {
  margin: 0 0 16px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #c43c1f;
}
.form-note {
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--steel);
  text-align: center;
}
.form-note--sent { color: #1c7a3d; font-weight: 600; }

.contact__details { position: sticky; top: 100px; }
.contact__panel {
  background: var(--navy-deep);
  color: #c3cde2;
  padding: 34px 30px;
}
.contact__panel-title {
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--white);
  margin-bottom: 24px;
}
.contact__dl div { margin-bottom: 20px; }
.contact__dl div:last-child { margin-bottom: 0; }
.contact__dl dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 4px;
}
.contact__dl dd { font-size: 0.95rem; }
.contact__dl a { color: var(--white); text-decoration: none; }
.contact__dl a:hover { color: var(--amber); }

.contact__strip {
  height: 8px;
  background: repeating-linear-gradient(
    -45deg,
    var(--amber) 0 14px,
    var(--navy-ink) 14px 28px
  );
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--navy-ink);
  color: #93a2c2;
}
.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-block: 56px 40px;
}
.site-footer__logo {
  height: 40px;
  width: auto;
  /* navy logo on dark: render white */
  filter: brightness(0) invert(1);
  opacity: 0.92;
  margin-bottom: 16px;
}
.site-footer__brand p { font-size: 0.9rem; }
.site-footer__col h4 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 14px;
}
.site-footer__col p { font-size: 0.9rem; margin-bottom: 6px; }
.site-footer__col a { color: #c3cde2; text-decoration: none; }
.site-footer__col a:hover { color: var(--amber); }

.site-footer__legal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-block: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
}
.site-footer__top { color: #c3cde2; text-decoration: none; }
.site-footer__top:hover { color: var(--amber); }

/* ---------- reveal on scroll ---------- */
@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity .6s ease, transform .6s ease;
  }
  [data-reveal].is-visible {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1020px) {
  .hero__inner { grid-template-columns: 1fr; padding-block: 72px 84px; }
  .hero__schematic { max-width: 620px; }
  .statstrip__inner { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .stat { border-top: 1px solid var(--line); }
  .stat:nth-child(-n+2) { border-top: 0; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .coverage { grid-template-columns: 1fr; gap: 44px; }
  .coverage__map { max-width: 560px; }
  .about__inner { grid-template-columns: 1fr; gap: 44px; }
  .contact { grid-template-columns: 1fr; }
  .contact__details { position: static; }
}

@media (max-width: 720px) {
  .section { padding: 68px 0; }
  .emergency .container { padding-block: 68px; }
  .about__inner { padding-block: 68px; }

  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px rgba(12, 23, 48, 0.12);
    padding: 8px 24px 20px;
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a:not(.btn) {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }
  .site-nav .btn { margin-top: 16px; }

  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .statstrip__inner { grid-template-columns: 1fr; }
  .stat { border-left: 0; border-top: 1px solid var(--line); }
  .stat:first-child { border-top: 0; }
  .hero__specs li { border-right: 0; padding-right: 0; margin-right: 0; width: 100%; }
  .hero__specs { flex-direction: column; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 28px; }
}