/* =========================================================
   Swartz Electric LLC — Design tokens
   Palette: charcoal-navy base, safety-amber + copper accents
   Type: Oswald (display / utility labels), Source Sans 3 (body)
   Signature: animated "circuit trace" divider (current flow)
   ========================================================= */

:root {
  --ink: #0F151C;
  --surface: #16202B;
  --surface-raised: #1D2A37;
  --line: #2B3946;
  --paper: #EEF1F4;
  --paper-dim: #AEB9C4;
  --amber: #F5A623;
  --amber-dim: #D6900F;
  --copper: #C77A3B;
  --safe-green: #3FAE6E;

  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;

  --radius: 4px;
  --wrap: 1120px;
  --speed: 220ms;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--amber);
  color: var(--ink);
  padding: 10px 16px;
  z-index: 1000;
  font-family: var(--font-mono);
  font-size: 14px;
}
.skip-link:focus { left: 12px; top: 12px; }

a { color: var(--amber); text-decoration-color: rgba(245,166,35,0.4); }
a:hover { text-decoration-color: var(--amber); }
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #FFFFFF;
  line-height: 1.15;
  margin: 0 0 0.6em;
}

h2 { font-size: clamp(1.6rem, 1.3rem + 1.4vw, 2.2rem); }
h3 { font-size: clamp(1.15rem, 1.05rem + 0.6vw, 1.4rem); color: var(--amber); }

p { margin: 0 0 1.1em; color: var(--paper-dim); }
strong { color: var(--paper); }

.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--amber);
  margin: 0 0 14px;
}
.eyebrow-light { color: var(--copper); }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.9rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform var(--speed) ease, background var(--speed) ease, border-color var(--speed) ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--amber);
  color: var(--ink);
}
.btn-primary:hover { background: #FFC15A; }
.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }
.btn-large { padding: 16px 32px; font-size: 0.95rem; }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 21, 28, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--paper);
}
.brand-mark {
  width: 14px;
  height: 22px;
  background: var(--amber);
  clip-path: polygon(60% 0, 0 55%, 45% 55%, 30% 100%, 100% 40%, 55% 40%);
  flex-shrink: 0;
}
.brand-text { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; letter-spacing: 0.02em; }
.brand-text em { color: var(--amber); font-style: normal; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.site-nav a {
  color: var(--paper-dim);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.site-nav a:hover { color: var(--amber); }
.nav-cta {
  border: 1px solid var(--amber-dim);
  padding: 8px 16px;
  border-radius: var(--radius);
  color: var(--amber) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--paper); display: block; }

/* ---------------- Hero ---------------- */
.hero {
  padding: 88px 0 64px;
  background:
    radial-gradient(ellipse at top right, rgba(245,166,35,0.10), transparent 55%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}
.hero-inner { max-width: 780px; }
.hero h1 {
  font-size: clamp(2rem, 1.55rem + 2.4vw, 3.1rem);
  margin-bottom: 0.5em;
}
.hero-lead {
  font-size: 1.08rem;
  max-width: 62ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 8px;
}

/* Signature element: animated circuit trace (current flow) */
.hero-trace {
  display: flex;
  align-items: center;
  margin-top: 56px;
  max-width: 420px;
}
.trace-line {
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, var(--amber-dim), var(--amber));
  position: relative;
  overflow: hidden;
}
.trace-line::after {
  content: "";
  position: absolute;
  top: 0; left: -40%;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, transparent, #FFE3AC, transparent);
  animation: current-flow 2.6s linear infinite;
}
.trace-node {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(245,166,35,0.18);
  flex-shrink: 0;
}
@keyframes current-flow {
  0% { left: -40%; }
  100% { left: 100%; }
}

/* ---------------- Article content ---------------- */
.content {
  padding: 72px 24px;
  max-width: 820px;
}
.content-block {
  margin-bottom: 3em;
  padding-top: 0.2em;
}
.content-block:not(:last-child) {
  border-bottom: 1px solid var(--line);
  padding-bottom: 2.6em;
}

.steps {
  margin: 0;
  padding-left: 1.3em;
  color: var(--paper-dim);
}
.steps li { margin-bottom: 0.9em; padding-left: 6px; }
.steps li::marker {
  font-family: var(--font-mono);
  color: var(--amber);
  font-weight: 600;
}

/* ---------------- FAQ accordion ---------------- */
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 4px 20px;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 28px 16px 0;
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--paper);
  position: relative;
  font-size: 1.02rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 14px;
  font-size: 1.4rem;
  color: var(--amber);
  transition: transform var(--speed) ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding-bottom: 16px; margin: 0; }

/* ---------------- Contact ---------------- */
.contact {
  background: var(--surface);
  border-top: 1px solid var(--line);
  padding: 72px 0;
}
.contact-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr auto;
  gap: 36px;
  align-items: center;
}
.contact-copy h2 { margin-bottom: 0.35em; }
.contact-copy p { margin: 0; max-width: 42ch; }

.contact-details {
  margin: 0;
  border-left: 2px solid var(--amber-dim);
  padding-left: 24px;
}
.contact-row { margin-bottom: 14px; }
.contact-row:last-child { margin-bottom: 0; }
.contact-row dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--copper);
  margin-bottom: 2px;
}
.contact-row dd { margin: 0; color: var(--paper); }
.contact-row a { color: var(--paper); text-decoration: none; }
.contact-row a:hover { color: var(--amber); }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--ink);
  border-top: 1px solid var(--line);
  padding: 24px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--paper-dim);
}
.footer-inner a { color: var(--paper-dim); text-decoration: none; }
.footer-inner a:hover { color: var(--amber); }

/* ---------------- Responsive ---------------- */
@media (max-width: 860px) {
  .contact-inner {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .contact-details { border-left: none; padding-left: 0; border-top: 2px solid var(--amber-dim); padding-top: 20px; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 16px;
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 0; width: 100%; }
  .nav-cta { margin-top: 8px; text-align: center; }

  .hero { padding: 56px 0 44px; }
  .content { padding: 48px 20px; }
  body { font-size: 16px; }
}