/* ==========================================================================
   S Warrender Electrical — design system
   Palette : ink navy + volt yellow (evolved from the existing logo)
   Type    : Archivo (display) / Figtree (body) / IBM Plex Mono (data labels)
   Motif   : hairline "test certificate" data rows
   ========================================================================== */

:root {
  --ink: #0A1733;
  --ink-80: #24365F;
  --slate: #5A6784;
  --line: #DDE3ED;
  --mist: #F2F5F9;
  --paper: #FFFFFF;
  --volt: #FFD400;
  --volt-ink: #8A6B00;

  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Figtree", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --wrap: 1140px;
  --gutter: 20px;
  --radius: 14px;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.skip {
  position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff;
  padding: 12px 18px; z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }

:where(a, button, input, textarea, select):focus-visible {
  outline: 3px solid var(--volt);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- Type scale ---------------------------------------------------------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(2.4rem, 7vw, 4.1rem); }
h2 { font-size: clamp(1.8rem, 4.4vw, 2.7rem); }
h3 { font-size: 1.18rem; letter-spacing: -0.015em; }
p  { margin: 0 0 1em; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
  margin: 0 0 14px;
}
.lede { font-size: 1.12rem; color: var(--slate); max-width: 58ch; }

/* Volt highlight behind display text */
.mark-volt {
  background-image: linear-gradient(var(--volt), var(--volt));
  background-repeat: no-repeat;
  background-size: 100% 0.32em;
  background-position: 0 88%;
  padding-inline: 0.06em;
}

/* --- Buttons ------------------------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  padding: 15px 24px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform .15s ease, background-color .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-volt { background: var(--volt); color: var(--ink); }
.btn-volt:hover { background: #FFDE3D; }
.btn-ink { background: var(--ink); color: #fff; }
.btn-ink:hover { background: var(--ink-80); }
.btn-ghost { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn-outline { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-outline:hover { border-color: var(--ink); }

/* --- Header -------------------------------------------------------------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 20px; height: 72px; }
.brand { display: flex; align-items: center; text-decoration: none; margin-right: auto; }
.brand svg { height: 40px; width: auto; }

.nav { display: flex; align-items: center; gap: 26px; }
.nav a {
  text-decoration: none; font-size: 0.94rem; font-weight: 500; color: var(--ink-80);
  padding: 6px 0; border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--ink); border-bottom-color: var(--volt); }
.header-cta { display: inline-flex; }

@media (max-width: 900px) {
  .nav { display: none; }
  .header-inner { height: 64px; }
  .brand svg { height: 34px; }
  .header-cta { padding: 11px 18px; font-size: 0.92rem; }
}

/* --- Hero ---------------------------------------------------------------- */

.hero {
  background: var(--ink);
  color: #fff;
  padding: clamp(56px, 9vw, 104px) 0 0;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute; inset: auto -10% -40% 55%;
  height: 420px;
  background: radial-gradient(closest-side, rgba(255,212,0,.14), transparent 70%);
  pointer-events: none;
}
.hero h1 { color: #fff; max-width: 15ch; }
.hero .lede { color: rgba(255,255,255,.72); margin-top: 22px; }
.hero .eyebrow { color: var(--volt); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

/* Signature element: the certificate strip */
.cert-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: clamp(44px, 7vw, 72px);
  border-top: 1px solid rgba(255,255,255,.18);
}
.cert-cell {
  padding: 22px 22px 26px 0;
  border-right: 1px solid rgba(255,255,255,.13);
}
.cert-cell:last-child { border-right: 0; }
.cert-cell:not(:first-child) { padding-left: 22px; }
.cert-key {
  font-family: var(--font-mono);
  font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--volt);
  display: block; margin-bottom: 8px;
}
.cert-val { font-family: var(--font-display); font-weight: 600; font-size: 1.02rem; line-height: 1.3; }

@media (max-width: 820px) {
  .cert-strip { grid-template-columns: repeat(2, 1fr); }
  .cert-cell { padding: 18px 16px 20px 0; border-bottom: 1px solid rgba(255,255,255,.13); }
  .cert-cell:nth-child(2n) { border-right: 0; padding-left: 16px; }
  .cert-cell:nth-last-child(-n+2) { border-bottom: 0; }
}

/* --- Sections ------------------------------------------------------------ */

.section { padding: clamp(56px, 8vw, 96px) 0; }
.section-mist { background: var(--mist); }
.section-ink { background: var(--ink); color: #fff; }
.section-ink h2 { color: #fff; }
.section-ink .lede { color: rgba(255,255,255,.7); }
.section-ink .eyebrow { color: var(--volt); }

.section-head { max-width: 62ch; margin-bottom: 44px; }

/* --- Service cards ------------------------------------------------------- */

.grid-services {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.service {
  background: #fff;
  padding: 30px 26px 28px;
  text-decoration: none;
  display: flex; flex-direction: column;
  transition: background-color .18s ease;
}
.service:hover { background: #FCFDFF; }
.service-no {
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.14em;
  color: var(--slate); margin-bottom: 16px;
}
.service h3 { margin-bottom: 8px; }
.service p { color: var(--slate); font-size: 0.95rem; margin: 0; }
.service-go {
  margin-top: 18px; font-family: var(--font-display); font-weight: 600;
  font-size: 0.9rem; color: var(--ink);
  border-bottom: 2px solid var(--volt); align-self: flex-start; padding-bottom: 2px;
}

/* --- Two-column feature -------------------------------------------------- */

.split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(32px, 6vw, 72px); align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

.panel {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px;
}
.section-ink .panel { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.16); }

/* Data rows — the certificate motif reused */
.rows { border-top: 1px solid var(--line); }
.section-ink .rows { border-top-color: rgba(255,255,255,.16); }
.row {
  display: flex; justify-content: space-between; gap: 20px;
  padding: 14px 0; border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
.section-ink .row { border-bottom-color: rgba(255,255,255,.16); }
.row dt { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--slate); margin: 0; }
.section-ink .row dt { color: rgba(255,255,255,.6); }
.row dd { margin: 0; font-weight: 500; text-align: right; }

/* --- Areas --------------------------------------------------------------- */

.areas { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 8px; }
.area-chip {
  font-size: 0.92rem; text-decoration: none;
  padding: 8px 15px; border: 1px solid var(--line); border-radius: 999px;
  background: #fff; color: var(--ink-80);
}
.area-chip:hover { border-color: var(--ink); color: var(--ink); }

/* --- Steps (a real sequence, so numbered) -------------------------------- */

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
@media (max-width: 780px) { .steps { grid-template-columns: 1fr; gap: 20px; } }
.step { border-top: 2px solid var(--volt); padding-top: 18px; }
.step-no { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: .14em; color: var(--slate); }
.step h3 { margin: 10px 0 6px; }
.step p { color: var(--slate); font-size: 0.95rem; margin: 0; }
.section-ink .step p { color: rgba(255,255,255,.7); }

/* --- FAQ ----------------------------------------------------------------- */

.faq { border-top: 1px solid var(--line); max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 20px 44px 20px 0; position: relative;
  font-family: var(--font-display); font-weight: 600; font-size: 1.06rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 8px; top: 17px;
  font-size: 1.5rem; font-weight: 400; color: var(--volt-ink); line-height: 1;
}
.faq details[open] summary::after { content: "\2013"; }
.faq details p { color: var(--slate); padding-right: 44px; margin-top: -4px; }

/* --- Contact / form ------------------------------------------------------ */

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field-full { grid-column: 1 / -1; }
@media (max-width: 620px) { .form-grid { grid-template-columns: 1fr; } }

label { display: block; font-family: var(--font-mono); font-size: 0.7rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--slate); margin-bottom: 7px; }
input, select, textarea {
  width: 100%; font-family: var(--font-body); font-size: 1rem; color: var(--ink);
  padding: 13px 14px; border: 1px solid var(--line); border-radius: 10px; background: #fff;
}
textarea { min-height: 130px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--ink); }
.form-note { font-size: 0.85rem; color: var(--slate); }

/* --- Footer -------------------------------------------------------------- */

.site-footer { background: var(--ink); color: rgba(255,255,255,.72); padding: 64px 0 32px; font-size: 0.94rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; } }
.site-footer h4 { font-size: 0.72rem; font-family: var(--font-mono); font-weight: 500;
  letter-spacing: .16em; text-transform: uppercase; color: var(--volt); margin-bottom: 14px; }
.site-footer a { color: rgba(255,255,255,.72); text-decoration: none; }
.site-footer a:hover { color: #fff; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 9px; }
.site-footer svg { height: 38px; width: auto; margin-bottom: 18px; }
.legal { border-top: 1px solid rgba(255,255,255,.14); margin-top: 48px; padding-top: 22px;
  font-size: 0.82rem; color: rgba(255,255,255,.5); display: flex; flex-wrap: wrap; gap: 8px 22px; }

/* --- Sticky mobile call bar ---------------------------------------------- */

.callbar { display: none; }
@media (max-width: 700px) {
  .callbar {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 60;
    background: var(--ink); border-top: 1px solid rgba(255,255,255,.16);
    padding: 10px 14px calc(10px + env(safe-area-inset-bottom)); gap: 10px;
  }
  .callbar .btn { flex: 1; justify-content: center; padding: 13px 12px; font-size: 0.95rem; }
  body { padding-bottom: 74px; }
}

/* --- Motion -------------------------------------------------------------- */

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}