/* ==========================================================================
   BlueLine Plumbing & Drainage — art direction: "spec sheet"
   Clinical navy, cyan signal, monospace metadata. The page is organised like
   a technical document: split hero, a real diagnostic table, mono step rail.
   ========================================================================== */

:root {
  --font-display: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --display-weight: 700;
  --display-tracking: -0.028em;

  --bg: #07101c;
  --bg-2: #0d1b2b;
  --paper: #f4f7f9;

  --ink: #eaf2f8;
  --ink-soft: #8fa8bd;
  --ink-faint: var(--ink-soft);

  --accent: #23c7d9;
  --accent-text: var(--accent);
  --accent-ink: #04161b;
  --accent-deep: #14919f;

  --hairline: rgba(143, 168, 189, .2);
  --hairline-strong: rgba(143, 168, 189, .36);
  --danger: #ff7a7a;
  --focus: var(--accent);

  --masthead-bg: rgba(7, 16, 28, .86);
  --panel-bg: #07101c;
  --input-bg: rgba(255, 255, 255, .045);
  --input-radius: 3px;
  --btn-radius: 2px;
  --sim-bg: rgba(35, 199, 217, .08);

  --flag-bg: rgba(35, 199, 217, .12);
  --flag-ink: #6fdfec;
  --flag-border: rgba(35, 199, 217, .4);
  --demo-bar-bg: #0d1b2b;
  --demo-bar-ink: #a8c0d2;

  --measure: 1240px;
}

.on-paper {
  background: var(--paper);
  --ink: #0b1a28;
  --ink-soft: #46606f;
  --ink-faint: var(--ink-soft);
  --accent-text: #087280;
  --danger: #b03a2e;
  --hairline: rgba(11, 26, 40, .14);
  --hairline-strong: rgba(11, 26, 40, .28);
  --input-bg: #fff;
  color: var(--ink);
}

.mono {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--accent-text);
}

/* --- Split hero --------------------------------------------------------- */

.hero-split {
  display: grid;
  min-height: min(90vh, 820px);
  background: var(--bg-2);
}
@media (min-width: 940px) {
  .hero-split { grid-template-columns: 1.05fr .95fr; }
}

.hero-split__text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(3rem, 8vw, 6rem) clamp(1.25rem, 5vw, 4.5rem);
  order: 2;
}
@media (min-width: 940px) { .hero-split__text { order: 1; } }

.hero-split__media {
  position: relative;
  min-height: 46vw;
  order: 1;
  background: var(--bg);
}
@media (min-width: 940px) { .hero-split__media { min-height: 100%; order: 2; } }
.hero-split__media img { width: 100%; height: 100%; object-fit: cover; }
.hero-split__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(13,27,43,.85) 0%, rgba(13,27,43,0) 38%);
}
@media (max-width: 939px) {
  .hero-split__media::after {
    background: linear-gradient(to bottom, rgba(13,27,43,.2) 0%, rgba(13,27,43,.9) 100%);
  }
}

.hero-split h1 {
  font-size: clamp(2.3rem, 6.2vw, 4.5rem);
  max-width: 15ch;
  margin: 1.4rem 0;
}

.hero-split__lede {
  font-size: clamp(1.02rem, 2vw, 1.2rem);
  color: var(--ink-soft);
  max-width: 44ch;
  margin-bottom: 2rem;
}

.meta-list {
  list-style: none;
  margin: 2.4rem 0 0;
  padding: 1.3rem 0 0;
  border-top: 1px solid var(--hairline);
  display: grid;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--ink-faint);
}
.meta-list li { display: grid; grid-template-columns: 8.5rem 1fr; gap: 1rem; }
.meta-list b { color: var(--ink-soft); font-weight: 400; }

/* --- Band furniture ----------------------------------------------------- */

.band { padding: clamp(4rem, 9vw, 7.5rem) 0; }
.section-head { margin-bottom: clamp(2.2rem, 5vw, 3.6rem); max-width: 60ch; }
.band h2 { font-size: clamp(1.9rem, 4.8vw, 3.2rem); max-width: 19ch; }
.band__lede { font-size: 1.06rem; color: var(--ink-soft); margin-top: 1.1rem; max-width: 56ch; }

/* --- Diagnostic table --------------------------------------------------- */

.diagnostics { width: 100%; border-collapse: collapse; text-align: left; }

.diagnostics caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-bottom: 1rem;
}

.diagnostics th, .diagnostics td {
  padding: 1.05rem 1rem 1.05rem 0;
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
  font-size: .98rem;
}
.diagnostics thead th {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
  border-bottom-color: var(--hairline-strong);
}
.diagnostics tbody th { font-weight: 600; color: var(--ink); width: 34%; }
.diagnostics td { color: var(--ink-soft); }

@media (max-width: 720px) {
  .diagnostics thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .diagnostics tr { display: block; padding: 1.1rem 0; border-bottom: 1px solid var(--hairline); }
  .diagnostics th, .diagnostics td { display: block; width: auto; border: 0; padding: 0 0 .4rem; }
  .diagnostics td::before {
    content: attr(data-label);
    display: block;
    font-family: var(--font-mono);
    font-size: .68rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin-bottom: .15rem;
  }
}

.sev {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  padding: .24rem .6rem;
  border-radius: 2px;
  border: 1px solid currentColor;
  white-space: nowrap;
}
.sev--now { color: #ff9b6a; }
.sev--soon { color: #ffd166; }
.sev--plan { color: var(--accent-text); }

/* --- Service definition rows -------------------------------------------- */

.defrows { border-top: 1px solid var(--hairline-strong); }
.defrow {
  display: grid;
  gap: .6rem 2.5rem;
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--hairline);
}
@media (min-width: 840px) {
  .defrow { grid-template-columns: 4rem 20ch 1fr; align-items: baseline; }
}
.defrow__idx { font-family: var(--font-mono); font-size: .8rem; color: var(--accent-text); }
.defrow h3 { font-size: 1.3rem; }
.defrow p { color: var(--ink-soft); font-size: 1rem; }

/* --- Emergency protocol rail -------------------------------------------- */

.protocol {
  counter-reset: p;
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}
@media (min-width: 820px) { .protocol { grid-template-columns: repeat(4, 1fr); } }

.protocol__item {
  background: var(--bg);
  padding: 1.7rem 1.4rem;
}
.on-paper .protocol__item { background: var(--paper); }
.protocol__item::before {
  counter-increment: p;
  content: "STEP " counter(p);
  display: block;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--accent-text);
  margin-bottom: .8rem;
}
.protocol__item h3 { font-size: 1.1rem; margin-bottom: .45rem; }
.protocol__item p { font-size: .93rem; color: var(--ink-soft); }

/* --- Feature ------------------------------------------------------------ */

.feature { display: grid; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (min-width: 940px) { .feature { grid-template-columns: 1fr 1fr; } }
.feature__media { aspect-ratio: 4/3; overflow: hidden; border-radius: 2px; background: var(--bg-2); }
.feature__media img { width: 100%; height: 100%; object-fit: cover; }

/* --- Receptionist ------------------------------------------------------- */

.receptionist { background: var(--accent); color: var(--accent-ink); }
.receptionist__grid { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 900px) { .receptionist__grid { grid-template-columns: 1.5fr 1fr; gap: 4rem; } }
.receptionist h2 { font-size: clamp(1.8rem, 4.4vw, 2.9rem); max-width: 18ch; }
.receptionist p { margin-top: 1rem; max-width: 50ch; color: rgba(4, 22, 27, .82); }
.receptionist .btn { background: var(--bg); color: var(--ink); }
.receptionist__note { margin-top: 1.1rem; font-size: .86rem; color: rgba(4,22,27,.7); }

/* --- Booking ------------------------------------------------------------ */

.booking { display: grid; gap: clamp(2rem, 5vw, 4rem); }
@media (min-width: 940px) { .booking { grid-template-columns: .8fr 1.2fr; } }
.booking__panel { background: #fff; border: 1px solid var(--hairline-strong); border-radius: 3px; padding: clamp(1.4rem, 4vw, 2.4rem); }
.contact-line { margin-top: 1.8rem; padding-top: 1.3rem; border-top: 1px solid var(--hairline); display: grid; gap: .3rem; }
.contact-line a { font-size: clamp(1.25rem, 3.2vw, 1.7rem); font-weight: 700; text-decoration: none; letter-spacing: -.02em; }
.contact-line span { font-size: .85rem; color: var(--ink-faint); }