/* ==================================================================
   03 — ELECTRICAL, EV CHARGERS & SMART HOME
   Dark, precise, product-like. Near-black surfaces, one luminous
   accent, tight geometric sans, card/panel grid. Motion is glow,
   count-up and magnetic hover only.

   Composition is deliberately unlike 01 and 02: full-bleed hero (no
   split column), equal-weight 3-up service panels, a stats strip
   that doesn't exist in the other two templates, a horizontal
   swipeable carousel for Recent Installs instead of a grid, an
   asymmetric featured-quote testimonial layout, and a single-column
   contact section instead of a form/info split.
================================================================== */

:root {
  /* Colour — near-black + luminous accent */
  --color-bg: #0b0d0f;
  --color-panel: #14171a;
  --color-panel-alt: #1b1f23;
  --color-ink: #f4f6f5;
  --color-ink-muted: #9ba3a8;
  --color-accent: #3ddc97;
  --color-accent-dim: rgba(61, 220, 151, 0.18);
  --color-border: #262b30;
  --color-success: #3ddc97;
  --color-error: #ff7a68;

  /* Type — one tight geometric sans throughout */
  --font-base: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* Radius — soft on panels, product-like */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  /* Motion */
  --transition-fast: 200ms;
  --transition-base: 350ms;
  --transition-slow: 600ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --content-max: 1120px;
  --callbar-height: 64px;
}

/* ------------------------------------------------------------------
   ALTERNATE PALETTE — light-mode inversion.
   To retheme: comment out the colour block in :root above and
   uncomment this one. Type, spacing, motion and grid stay untouched,
   so the retheme stays coherent.
------------------------------------------------------------------
:root {
  --color-bg: #f4f6f5;
  --color-panel: #ffffff;
  --color-panel-alt: #eef1f0;
  --color-ink: #0b0d0f;
  --color-ink-muted: #5a6268;
  --color-accent: #0a6b74;
  --color-accent-dim: rgba(10, 107, 116, 0.12);
  --color-border: #dde2e1;
  --color-success: #0a6b74;
  --color-error: #b23a2b;
}
------------------------------------------------------------------- */

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

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.55;
  padding-bottom: calc(var(--callbar-height) + env(safe-area-inset-bottom, 0px));
  overflow-x: hidden;
}

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

h1,
h2,
h3,
h4,
p,
figure {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
}

.wrap {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 640px) {
  .wrap {
    padding-inline: var(--space-7);
  }
}

/* ------------------------------------------------------------------
   Accessibility helpers
------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-3);
  z-index: 100;
  background: var(--color-accent);
  color: var(--color-bg);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast) var(--ease-out);
  font-weight: 700;
}

.skip-link:focus {
  top: var(--space-3);
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ------------------------------------------------------------------
   Header
------------------------------------------------------------------- */
.site-header {
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.header-call {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: border-color var(--transition-fast) var(--ease-out),
    box-shadow var(--transition-fast) var(--ease-out);
}

.header-call:hover,
.header-call:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}

.icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

/* ------------------------------------------------------------------
   Eyebrow / label convention
------------------------------------------------------------------- */
.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

/* ------------------------------------------------------------------
   Media placeholders
------------------------------------------------------------------- */
.media {
  position: relative;
  aspect-ratio: var(--ar, 4 / 3);
  background: radial-gradient(120% 140% at 20% 0%, var(--color-panel-alt), var(--color-panel) 70%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3);
  overflow: hidden;
}

.media__icon {
  width: 30%;
  max-width: 110px;
  color: var(--color-accent);
  opacity: 0.55;
}

.media__label {
  position: absolute;
  left: var(--space-3);
  bottom: var(--space-3);
  font-size: 0.68rem;
  color: var(--color-ink-muted);
  background: rgba(11, 13, 15, 0.7);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  line-height: 1.3;
}

/* ------------------------------------------------------------------
   Reveal + glow motion
------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--transition-slow) var(--ease-out),
    transform var(--transition-slow) var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.panel {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition-base) var(--ease-out),
    border-color var(--transition-base) var(--ease-out);
}

.panel:hover,
.panel:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-dim), 0 20px 40px -28px var(--color-accent-dim);
}

@media (prefers-reduced-motion: reduce) {
  .panel {
    transition: none;
  }
}

/* ------------------------------------------------------------------
   Buttons — includes magnetic hover hook
------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: -0.005em;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform var(--transition-fast) var(--ease-out),
    box-shadow var(--transition-fast) var(--ease-out),
    border-color var(--transition-fast) var(--ease-out);
  min-height: 48px;
  will-change: transform;
}

.btn-primary {
  background: var(--color-accent);
  color: #06110c;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow: 0 0 0 6px var(--color-accent-dim);
}

.btn-secondary {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-border);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-dim);
}

@media (prefers-reduced-motion: reduce) {
  .btn {
    transition: box-shadow var(--transition-fast) var(--ease-out),
      border-color var(--transition-fast) var(--ease-out);
  }
}

/* ------------------------------------------------------------------
   Hero — full-bleed, no split column. Copy sits over a glow field.
------------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: var(--space-9) var(--space-8);
  background:
    radial-gradient(60% 50% at 85% 0%, var(--color-accent-dim), transparent 70%),
    radial-gradient(50% 40% at 10% 100%, var(--color-accent-dim), transparent 70%),
    var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.hero .wrap {
  position: relative;
  max-width: 760px;
}

.hero-heading {
  font-weight: 800;
  font-size: clamp(2.1rem, 7vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero-tagline {
  margin-top: var(--space-4);
  font-size: 1.05rem;
  color: var(--color-ink-muted);
  max-width: 44ch;
}

.hero-actions {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ------------------------------------------------------------------
   Section shell
------------------------------------------------------------------- */
.section {
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.section-head {
  max-width: 56ch;
  margin-bottom: var(--space-6);
}

.section-heading {
  font-weight: 800;
  font-size: clamp(1.55rem, 4vw, 2.05rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.section-lede {
  margin-top: var(--space-3);
  color: var(--color-ink-muted);
}

/* ------------------------------------------------------------------
   Services — equal-weight 3-up panel grid
------------------------------------------------------------------- */
.services-grid {
  display: grid;
  gap: var(--space-4);
}

.service-panel {
  padding: var(--space-5);
  display: grid;
  gap: var(--space-3);
}

.service-panel__icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-accent);
}

.service-panel__title {
  font-weight: 700;
  font-size: 1.08rem;
}

.service-panel__text {
  color: var(--color-ink-muted);
  font-size: 0.92rem;
}

@media (min-width: 700px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ------------------------------------------------------------------
   Why us — signature wiring diagram + credential list (2-col)
------------------------------------------------------------------- */
.why-grid {
  display: grid;
  gap: var(--space-6);
}

.diagram-panel {
  padding: var(--space-5);
  aspect-ratio: 4 / 3;
}

.diagram-panel svg {
  width: 100%;
  height: 100%;
  color: var(--color-border);
}

.diagram-panel svg .diagram-line {
  stroke: currentColor;
  transition: stroke var(--transition-slow) var(--ease-out),
    filter var(--transition-slow) var(--ease-out);
}

.diagram-panel svg .diagram-node {
  fill: currentColor;
  transition: fill var(--transition-slow) var(--ease-out),
    filter var(--transition-slow) var(--ease-out);
}

.diagram-panel.is-lit svg {
  color: var(--color-accent);
}

.diagram-panel.is-lit svg .diagram-line,
.diagram-panel.is-lit svg .diagram-node {
  filter: drop-shadow(0 0 6px var(--color-accent));
}

@media (prefers-reduced-motion: reduce) {
  .diagram-panel svg .diagram-line,
  .diagram-panel svg .diagram-node {
    transition: none;
  }
}

.credential-list {
  display: grid;
  gap: var(--space-4);
  align-content: start;
}

.credential-list li {
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}

.credential-list .value {
  font-weight: 700;
}

.credential-list .label {
  color: var(--color-ink-muted);
  font-size: 0.88rem;
}

.token {
  color: var(--color-ink-muted);
}

@media (min-width: 860px) {
  .why-grid {
    grid-template-columns: 6fr 6fr;
    align-items: center;
  }
}

/* ------------------------------------------------------------------
   By the Numbers — stat strip (unique to this template)
------------------------------------------------------------------- */
.stats-row {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(3, 1fr);
}

.stat {
  padding: var(--space-5) var(--space-3);
  text-align: center;
}

.stat__value {
  display: block;
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.stat__label {
  margin-top: var(--space-1);
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ------------------------------------------------------------------
   Recent Installs — horizontal scroll-snap carousel, not a grid
------------------------------------------------------------------- */
.carousel {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: var(--space-3);
  padding-inline: var(--space-4);
  scrollbar-width: thin;
}

@media (min-width: 640px) {
  .carousel {
    padding-inline: var(--space-7);
  }
}

.carousel-item {
  flex: 0 0 78%;
  scroll-snap-align: start;
  display: grid;
  gap: var(--space-3);
}

@media (min-width: 700px) {
  .carousel-item {
    flex-basis: 32%;
  }
}

.carousel-item .media {
  --ar: 4 / 3;
}

.carousel-item__caption {
  font-size: 0.88rem;
  color: var(--color-ink-muted);
}

/* ------------------------------------------------------------------
   Testimonials — asymmetric: one featured quote + two supporting
------------------------------------------------------------------- */
.testimonial-layout {
  display: grid;
  gap: var(--space-4);
}

.testimonial-featured {
  padding: var(--space-6);
}

.testimonial-featured blockquote {
  margin: 0;
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.005em;
}

.testimonial-featured cite {
  display: block;
  margin-top: var(--space-4);
  font-style: normal;
  color: var(--color-ink-muted);
  font-size: 0.88rem;
}

.testimonial-support {
  display: grid;
  gap: var(--space-4);
}

.testimonial-support .panel {
  padding: var(--space-5);
  display: grid;
  gap: var(--space-2);
}

.testimonial-support blockquote {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
}

.testimonial-support cite {
  font-style: normal;
  color: var(--color-ink-muted);
  font-size: 0.82rem;
}

@media (min-width: 860px) {
  .testimonial-layout {
    grid-template-columns: 7fr 5fr;
    align-items: stretch;
  }
}

/* ------------------------------------------------------------------
   Coverage Area — single-column, full-bleed glow panel
------------------------------------------------------------------- */
.area {
  text-align: center;
  background: radial-gradient(60% 80% at 50% 0%, var(--color-accent-dim), transparent 70%),
    var(--color-bg);
}

.area .wrap {
  max-width: 640px;
}

.area .section-heading {
  font-size: clamp(1.7rem, 5vw, 2.4rem);
}

.area .section-lede {
  margin-inline: auto;
  max-width: 48ch;
}

/* ------------------------------------------------------------------
   FAQ
------------------------------------------------------------------- */
.faq-list {
  display: grid;
  gap: var(--space-3);
}

.faq-item {
  padding: var(--space-2) var(--space-4);
}

.faq-item summary {
  cursor: pointer;
  padding-block: var(--space-3);
  font-weight: 700;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.2rem;
  color: var(--color-accent);
  transition: transform var(--transition-fast) var(--ease-out);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding-block: 0 var(--space-4);
  color: var(--color-ink-muted);
}

/* ------------------------------------------------------------------
   Contact — single column, info strip above the form
------------------------------------------------------------------- */
.contact .wrap {
  max-width: 640px;
}

.contact-strip {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

@media (min-width: 560px) {
  .contact-strip {
    grid-template-columns: repeat(3, 1fr);
  }
}

.contact-strip__item {
  padding: var(--space-4);
  text-align: center;
  display: grid;
  gap: var(--space-1);
}

.contact-strip__label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.contact-strip__value {
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
}

.contact-strip__value:hover,
.contact-strip__value:focus-visible {
  color: var(--color-accent);
}

.form {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-5);
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field label {
  font-size: 0.85rem;
  font-weight: 600;
}

.field input,
.field textarea {
  font: inherit;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-ink);
}

.field input:focus-visible,
.field textarea:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 1px;
}

.field textarea {
  resize: vertical;
  min-height: 7rem;
}

.form-status {
  font-size: 0.9rem;
  min-height: 1.2em;
}

.form-status[data-state="success"] {
  color: var(--color-success);
}

.form-status[data-state="error"] {
  color: var(--color-error);
}

/* ------------------------------------------------------------------
   Footer
------------------------------------------------------------------- */
.site-footer {
  background: var(--color-bg);
  color: var(--color-ink);
  padding-block: var(--space-7);
}

.footer-grid {
  display: grid;
  gap: var(--space-6);
}

.footer-brand {
  font-size: 1.15rem;
  font-weight: 800;
}

.footer-tagline {
  margin-top: var(--space-2);
  color: var(--color-ink-muted);
  font-size: 0.9rem;
  max-width: 32ch;
}

.footer-nav {
  display: grid;
  gap: var(--space-2);
  font-size: 0.9rem;
}

.footer-nav a {
  text-decoration: none;
  color: var(--color-ink-muted);
  transition: color var(--transition-fast) var(--ease-out);
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--color-accent);
}

.footer-meta {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  font-size: 0.78rem;
  color: var(--color-ink-muted);
  display: grid;
  gap: var(--space-1);
}

@media (min-width: 700px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr;
  }
}

/* ------------------------------------------------------------------
   Sticky click-to-call bar
------------------------------------------------------------------- */
.call-bar {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 50;
  background: var(--color-panel);
  border-top: 1px solid var(--color-border);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.call-bar a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: var(--callbar-height);
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 800;
  font-size: 1rem;
}

@media (min-width: 860px) {
  .call-bar {
    display: none;
  }

  body {
    padding-bottom: 0;
  }
}