/* ST Disposal Services — core stylesheet
   Palette: concrete base, ink structure, hi-vis amber accent */

:root {
  --ink: #14181a;
  --ink-soft: #232b2e;
  --steel: #4a585c;
  --concrete: #e8e7e2;
  --concrete-dim: #dcdbd5;
  --paper: #ffffff;
  --amber: #ffb400;
  --amber-deep: #d99400;
  --line: rgba(20, 24, 26, 0.14);
  --line-dark: rgba(255, 255, 255, 0.14);

  --display: "Saira Condensed", "Arial Narrow", sans-serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --wrap: 1180px;
  --pad: clamp(1.15rem, 4vw, 2.5rem);
  --radius: 3px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--concrete);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.005em;
  text-transform: uppercase;
  margin: 0;
}

h1 { font-size: clamp(2.65rem, 7.4vw, 5.1rem); }
h2 { font-size: clamp(2rem, 4.6vw, 3.15rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.5rem); }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
  margin: 0 0 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 3px;
  background: var(--amber);
  flex: none;
}
.eyebrow.on-ink { color: #a9b6ba; }

.skip {
  position: absolute;
  left: -9999px;
  background: var(--ink);
  color: #fff;
  padding: 0.75rem 1rem;
  z-index: 200;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

:where(a, button, input, textarea, select, [tabindex]):focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

/* ---------- header ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink);
  color: #fff;
  border-bottom: 1px solid var(--line-dark);
}

.masthead .wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 66px;
}

.wordmark {
  font-family: var(--display);
  font-weight: 800;
  text-transform: uppercase;
  text-decoration: none;
  font-size: 1.32rem;
  letter-spacing: 0.01em;
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 0.42rem;
  margin-right: auto;
}
.wordmark b { color: var(--amber); font-weight: 800; }
.wordmark span {
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.19em;
  color: #96a3a7;
  text-transform: uppercase;
  font-weight: 400;
}

.nav {
  display: flex;
  gap: 1.4rem;
  align-items: center;
}
.nav a {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  text-decoration: none;
  color: #cfd7d9;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
}
.nav a:hover, .nav a[aria-current="page"] {
  color: #fff;
  border-bottom-color: var(--amber);
}

.call-pill {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.85rem;
  background: var(--amber);
  color: var(--ink);
  text-decoration: none;
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background 0.15s;
}
.call-pill:hover { background: #fff; }

@media (max-width: 880px) {
  .nav { display: none; }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 0.95rem 1.5rem;
  border-radius: var(--radius);
  border: 2px solid var(--ink);
  background: var(--ink);
  color: #fff;
  transition: transform 0.12s, background 0.15s, color 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn-amber { background: var(--amber); border-color: var(--amber); color: var(--ink); }
.btn-amber:hover { background: var(--amber-deep); border-color: var(--amber-deep); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; }
.btn-ghost-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.45); }
.btn-ghost-light:hover { background: #fff; color: var(--ink); border-color: #fff; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.7rem;
}

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

.hero { padding: clamp(2.6rem, 6vw, 4.6rem) 0 clamp(2.6rem, 5vw, 4rem); }

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 4vw, 3.6rem);
  align-items: center;
}

.hero h1 { margin-bottom: 1.1rem; }
.hero h1 em { font-style: normal; color: var(--amber-deep); }

.lede {
  font-size: clamp(1.02rem, 1.5vw, 1.16rem);
  max-width: 33ch;
  color: var(--ink-soft);
}

.trust {
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 1.2rem 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.6rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--steel);
}
.trust li { display: flex; align-items: center; gap: 0.45rem; }
.trust li::before {
  content: "";
  width: 7px; height: 7px;
  background: var(--amber);
  flex: none;
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .lede { max-width: none; }
}

/* ---------- load gauge (signature) ---------- */

.gauge {
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
  padding: clamp(1.3rem, 2.6vw, 1.9rem);
  box-shadow: 0 22px 44px -26px rgba(20, 24, 26, 0.75);
}

.gauge-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid var(--line-dark);
  padding-bottom: 0.9rem;
  margin-bottom: 1.1rem;
}
.gauge-head h2 {
  font-size: 1.28rem;
  letter-spacing: 0.01em;
}
.gauge-head span {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  color: #8e9ca0;
  text-transform: uppercase;
}

.gauge-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.gauge-tabs button {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.7rem 0.3rem;
  background: transparent;
  color: #b9c4c7;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s;
  line-height: 1.25;
}
.gauge-tabs button small {
  display: block;
  font-size: 0.62rem;
  color: #7d8b8f;
  letter-spacing: 0.06em;
}
.gauge-tabs button:hover { border-color: var(--amber); color: #fff; }
.gauge-tabs button[aria-selected="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}
.gauge-tabs button[aria-selected="true"] small { color: rgba(20,24,26,.7); }

.gauge-stage { margin-bottom: 1.1rem; }
.gauge-stage svg { width: 100%; height: auto; }

.lorry-body, .lorry-wheel, .lorry-dim, .lorry-tick { transition: all 0.45s cubic-bezier(0.65, 0, 0.35, 1); }

.gauge-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  padding: 0.95rem 0;
  margin-bottom: 1.05rem;
}
.gauge-specs div span {
  display: block;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: #8e9ca0;
  margin-bottom: 0.2rem;
}
.gauge-specs div strong {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--amber);
}

.gauge-fits {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.75;
  color: #cdd6d8;
  margin: 0 0 1.15rem;
  padding: 0;
  list-style: none;
}
.gauge-fits li { padding-left: 1.1rem; position: relative; }
.gauge-fits li::before {
  content: "+";
  position: absolute;
  left: 0;
  color: var(--amber);
}

.gauge-note {
  font-family: var(--mono);
  font-size: 0.66rem;
  line-height: 1.6;
  color: #8e9ca0;
  margin-top: 0.85rem;
}

/* ---------- generic sections ---------- */

.section { padding: clamp(3rem, 6.5vw, 5.4rem) 0; }
.section-ink { background: var(--ink); color: #fff; }
.section-paper { background: var(--paper); }

.section-head { max-width: 62ch; margin-bottom: clamp(1.8rem, 3.5vw, 2.8rem); }
.section-head p { margin-top: 0.95rem; color: var(--steel); }
.section-ink .section-head p { color: #a9b6ba; }

/* ---------- service cards ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(265px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.card {
  background: var(--concrete);
  padding: clamp(1.4rem, 2.4vw, 1.9rem);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  transition: background 0.15s;
}
a.card:hover { background: var(--paper); }
.card h3 { font-size: 1.28rem; }
.card p { font-size: 0.94rem; color: var(--steel); }
.card .card-tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber-deep);
}
.card .card-go {
  font-family: var(--mono);
  font-size: 0.74rem;
  margin-top: auto;
  padding-top: 0.6rem;
  color: var(--ink);
}
a.card:hover .card-go { color: var(--amber-deep); }

/* ---------- steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(1.4rem, 3vw, 2.4rem);
}
.step { border-top: 3px solid var(--amber); padding-top: 1.1rem; }
.step .step-n {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  color: #8e9ca0;
  display: block;
  margin-bottom: 0.55rem;
}
.step h3 { margin-bottom: 0.6rem; font-size: 1.2rem; }
.step p { font-size: 0.94rem; color: #a9b6ba; }

/* ---------- price table ---------- */

.table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--paper); }
table.rates {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
  font-size: 0.92rem;
}
table.rates th, table.rates td {
  text-align: left;
  padding: 0.95rem 1.15rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.rates thead th {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--steel);
  background: var(--concrete-dim);
}
table.rates tbody th {
  font-family: var(--display);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 1.05rem;
  white-space: nowrap;
}
table.rates td.rate {
  font-family: var(--mono);
  font-weight: 600;
  white-space: nowrap;
}
table.rates tbody tr:last-child th,
table.rates tbody tr:last-child td { border-bottom: 0; }

.fineprint {
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.7;
  color: var(--steel);
  margin-top: 1rem;
}

/* ---------- two-column prose ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.8rem, 4vw, 3.4rem);
  align-items: start;
}
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }

.checklist { list-style: none; margin: 0; padding: 0; }
.checklist li {
  padding: 0.55rem 0 0.55rem 1.7rem;
  border-bottom: 1px solid var(--line);
  position: relative;
  font-size: 0.95rem;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0; top: 1.05rem;
  width: 9px; height: 9px;
  background: var(--amber);
}
.checklist.no li::before { background: var(--steel); }
.section-ink .checklist li { border-bottom-color: var(--line-dark); }

/* ---------- faq ---------- */

.faq { border-top: 1px solid var(--line); }
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.15rem 0;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1.15rem 2.4rem 1.15rem 0;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.12rem;
  text-transform: uppercase;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 0.35rem; top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 1.3rem;
  color: var(--amber-deep);
}
.faq details[open] summary::after { content: "–"; }
.faq details p {
  padding: 0 0 1.25rem;
  max-width: 78ch;
  font-size: 0.96rem;
  color: var(--steel);
}

/* ---------- cta band ---------- */

.cta-band {
  background: var(--amber);
  color: var(--ink);
  padding: clamp(2.4rem, 5vw, 3.6rem) 0;
}
.cta-band .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  align-items: center;
  justify-content: space-between;
}
.cta-band h2 { max-width: 18ch; }
.cta-band p {
  font-family: var(--mono);
  font-size: 0.82rem;
  margin-top: 0.7rem;
  max-width: 40ch;
}

/* ---------- footer ---------- */

.foot {
  background: var(--ink);
  color: #a9b6ba;
  padding: clamp(2.6rem, 5vw, 3.6rem) 0 2rem;
  font-size: 0.9rem;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line-dark);
}
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr; } }
.foot h4 {
  font-size: 0.95rem;
  color: #fff;
  margin-bottom: 0.9rem;
  letter-spacing: 0.05em;
}
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin-bottom: 0.45rem; }
.foot a { text-decoration: none; }
.foot a:hover { color: var(--amber); }
.foot .mono { font-family: var(--mono); font-size: 0.8rem; line-height: 1.85; }
.foot .amber { color: var(--amber); }
.colophon {
  padding-top: 1.4rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: #6f7d81;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  justify-content: space-between;
}

/* ---------- sticky mobile action bar ---------- */

.actionbar { display: none; }
@media (max-width: 700px) {
  body { padding-bottom: 66px; }
  .actionbar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    position: fixed;
    inset: auto 0 0 0;
    z-index: 90;
    border-top: 1px solid var(--line-dark);
  }
  .actionbar a {
    font-family: var(--mono);
    font-size: 0.84rem;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    padding: 1.05rem 0.5rem;
  }
  .actionbar .ab-call { background: var(--ink); color: #fff; }
  .actionbar .ab-wa { background: var(--amber); color: var(--ink); }
}

/* ---------- inner page hero ---------- */

.page-head {
  background: var(--ink);
  color: #fff;
  padding: clamp(2.6rem, 5.5vw, 4.2rem) 0 clamp(2.2rem, 4.5vw, 3.2rem);
}
.page-head h1 { max-width: 20ch; font-size: clamp(2.35rem, 5.6vw, 3.9rem); }
.page-head .lede { color: #b9c4c7; max-width: 56ch; margin-top: 1.1rem; }
.crumbs {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #7d8b8f;
  margin-bottom: 1.2rem;
}
.crumbs a { text-decoration: none; }
.crumbs a:hover { color: var(--amber); }

.prose h2 { margin-top: 2.6rem; margin-bottom: 1rem; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 1.9rem; margin-bottom: 0.7rem; }
.prose p, .prose li { color: var(--ink-soft); }
.prose ul { padding-left: 1.15rem; }
.prose li { margin-bottom: 0.4rem; }

.aside {
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 4px solid var(--amber);
  padding: 1.5rem;
  position: sticky;
  top: 90px;
}
.aside h3 { font-size: 1.15rem; margin-bottom: 0.8rem; }
.aside .mono { font-family: var(--mono); font-size: 0.8rem; color: var(--steel); line-height: 1.8; }
@media (max-width: 820px) { .aside { position: static; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}