/* Kao Electric visual refresh — additive stylesheet, September 2026.
   This file intentionally preserves the existing HTML, forms, tracking, routes,
   and approved logo files. Remove this link from index.html to roll back styling. */

:root {
  --kao-navy: #061b2c;
  --kao-navy-deep: #03111e;
  --kao-slate: #17324a;
  --kao-gold: #ddaa32;
  --kao-gold-soft: #f3d483;
  --kao-ivory: #f8f6f0;
  --kao-paper: #fffdfa;
  --kao-ink: #112334;
  --kao-muted: #597080;
  --kao-line: rgba(221, 170, 50, 0.46);
  --kao-ease: cubic-bezier(0.23, 1, 0.32, 1);
}

html { scroll-behavior: smooth; }
body {
  background: var(--kao-ivory);
  color: var(--kao-ink);
  font-family: "Open Sans", Arial, sans-serif;
}

.topbar {
  background: var(--kao-navy-deep);
  border-bottom: 1px solid rgba(221, 170, 50, 0.18);
  color: rgba(255,255,255,0.74);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}
.topbar a { color: var(--kao-gold-soft); text-decoration: none; }
.topbar a:hover { color: #fff; }

.header {
  background: rgba(6, 27, 44, 0.96);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 12px 32px rgba(3,17,30,0.18);
}
.header-inner { min-height: 82px; }
.logo-shine-wrap { display: inline-flex; align-items: center; gap: 0.65rem; }
.logo-img-nav { filter: none !important; }
.logo-text {
  color: #fff;
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
}
.logo-accent { color: var(--kao-gold); }
.nav a { color: rgba(255,255,255,0.82); font-size: 0.76rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.nav a:hover, .nav a:focus-visible { color: var(--kao-gold-soft); }
.nav-cta, .btn.btn-primary {
  background: var(--kao-gold);
  border-color: var(--kao-gold);
  color: #182536;
  border-radius: 4px;
  box-shadow: 0 12px 24px rgba(221,170,50,0.18);
  font-weight: 800;
  letter-spacing: 0.055em;
  text-transform: uppercase;
  transition: transform 160ms var(--kao-ease), box-shadow 160ms var(--kao-ease), background-color 160ms var(--kao-ease);
}
.nav-cta:hover, .btn.btn-primary:hover { background: #f0c45a; color: var(--kao-navy-deep); box-shadow: 0 16px 30px rgba(221,170,50,0.26); transform: translateY(-2px); }
.nav-cta:active, .btn.btn-primary:active { transform: scale(0.97); }

.hero {
  min-height: min(720px, calc(100vh - 70px));
  overflow: hidden;
  isolation: isolate;
  background: var(--kao-navy);
  border-bottom: 1px solid rgba(221,170,50,0.32);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.74;
  background:
    linear-gradient(90deg, rgba(3,17,30,0.08) 0%, rgba(3,17,30,0.06) 42%, var(--kao-navy) 52%, var(--kao-navy) 100%),
    linear-gradient(135deg, transparent 0 66%, rgba(221,170,50,0.27) 66.1% 66.25%, transparent 66.35%);
}
.hero::after {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 12% 4% auto auto;
  width: min(360px, 28vw);
  height: 280px;
  opacity: 0.4;
  background:
    radial-gradient(circle at 7px 7px, var(--kao-gold) 0 2px, transparent 2.5px) 0 0/58px 58px,
    linear-gradient(90deg, transparent 0 14%, var(--kao-line) 14.2% 14.6%, transparent 14.8%) 0 0/58px 58px,
    linear-gradient(0deg, transparent 0 14%, var(--kao-line) 14.2% 14.6%, transparent 14.8%) 0 0/58px 58px;
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%, 0 72%);
  pointer-events: none;
}
.hero-bg {
  object-position: 23% center;
  filter: saturate(0.82) contrast(1.06);
  transform: scale(1.015);
}
.hero-overlay { background: linear-gradient(90deg, rgba(3,17,30,0.06) 0%, rgba(6,27,44,0.03) 40%, rgba(6,27,44,0.95) 55%, var(--kao-navy) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 660px; margin-left: auto; padding-right: clamp(1.5rem, 7vw, 7rem); }
.hero-eyebrow, .section-eyebrow {
  color: var(--kao-gold);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.hero-headline, .section-title, .about-text .section-title, .calc-text .section-title {
  color: #fff;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 0.95;
}
.hero-headline { font-size: clamp(3.35rem, 5.7vw, 5.8rem); max-width: 12ch; }
.hero-sub { color: rgba(255,255,255,0.82); font-size: 1.04rem; line-height: 1.75; max-width: 58ch; }
.hero-actions { gap: 0.85rem; flex-wrap: wrap; }
.btn.btn-secondary, .btn.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.66);
  color: #fff;
  border-radius: 4px;
  transition: color 160ms var(--kao-ease), background-color 160ms var(--kao-ease), transform 160ms var(--kao-ease);
}
.btn.btn-secondary:hover, .btn.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: var(--kao-gold-soft); transform: translateY(-2px); }

.trust-strip {
  background: var(--kao-paper);
  border-bottom: 1px solid rgba(17,35,52,0.11);
  color: var(--kao-navy);
}
.trust-item { color: var(--kao-navy); font-family: "Montserrat", Arial, sans-serif; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.055em; text-transform: uppercase; }

.section { background: var(--kao-ivory); padding: clamp(4.5rem, 9vw, 8rem) 0; }
.section-title { color: var(--kao-navy); font-size: clamp(2.65rem, 4.6vw, 4.5rem); max-width: 15ch; }
.section-sub { color: var(--kao-muted); font-size: 1.02rem; line-height: 1.75; max-width: 63ch; }
.project-router { background: var(--kao-paper); }
.router-grid, .services-grid, .why-grid { gap: 1.1rem; }
.router-card, .service-card, .why-card {
  background: #fff;
  border: 1px solid rgba(17,35,52,0.11);
  border-radius: 3px;
  box-shadow: 0 14px 34px rgba(3,17,30,0.055);
  transition: transform 220ms var(--kao-ease), box-shadow 220ms var(--kao-ease), border-color 220ms var(--kao-ease);
}
.router-card:hover, .service-card:hover, .why-card:hover { border-color: rgba(221,170,50,0.7); box-shadow: 0 24px 42px rgba(3,17,30,0.12); transform: translateY(-6px); }
.router-icon, .service-icon, .why-icon { color: var(--kao-gold); }
.router-card h3, .service-card h3, .why-card h3 { color: var(--kao-navy); font-family: "Montserrat", Arial, sans-serif; }
.router-link, .router-request, .service-link { color: #9a6710; font-family: "Montserrat", Arial, sans-serif; font-size: 0.78rem; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase; }
.router-link:hover, .router-request:hover, .service-link:hover { color: var(--kao-navy); }

.process-section, .calc-cta-section {
  background: var(--kao-navy);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.process-section::before, .calc-cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(135deg, transparent 49.6%, rgba(221,170,50,0.11) 49.8%, rgba(221,170,50,0.11) 50.2%, transparent 50.4%);
  background-size: 84px 84px;
  opacity: 0.25;
  pointer-events: none;
}
.process-section .container, .calc-cta-section .container { position: relative; z-index: 1; }
.process-section .section-title, .calc-cta-section .section-title { color: #fff; }
.process-section .section-sub, .calc-cta-section p { color: rgba(255,255,255,0.76); }
.process-step { border-top-color: var(--kao-gold); }
.process-number { background: var(--kao-navy); border-color: var(--kao-gold); color: var(--kao-gold-soft); }
.calc-preview-box { background: rgba(255,255,255,0.06); border-color: rgba(221,170,50,0.55); box-shadow: 0 28px 60px rgba(0,0,0,0.26); }

.codes-section { background: #eaf0f1; }
.code-card { border-radius: 3px; box-shadow: 0 16px 36px rgba(3,17,30,0.09); }
.code-blue { background: var(--kao-navy); }
.code-green { background: #1d4d49; }
.compliance-box { border-color: var(--kao-gold); background: #fff8e4; color: var(--kao-navy); }

.why-section { background: var(--kao-paper); }
.about { background: var(--kao-navy); }
.about-text .section-title { color: #fff; }
.about-text p { color: rgba(255,255,255,0.78); }
.about-image img { border-radius: 3px; box-shadow: 28px 28px 0 rgba(221,170,50,0.18); }
.badge { background: rgba(255,255,255,0.09); border-color: rgba(221,170,50,0.45); color: #fff; }

.areas-section { background: #f1eee7; }
.area-chip { border-color: rgba(17,35,52,0.18); color: var(--kao-navy); }
.area-chip:hover { background: var(--kao-navy); border-color: var(--kao-navy); color: #fff; }
.gallery-section { background: var(--kao-paper); }
.gallery-item { border-radius: 3px; overflow: hidden; border: 1px solid rgba(17,35,52,0.1); }
.gallery-caption { background: var(--kao-navy); color: #fff; }

.contact-section, .footer { background: var(--kao-navy-deep); }
.contact-section .section-title, .footer h2, .footer h3 { color: #fff; }
.contact-section p, .footer p, .footer li, .footer a { color: rgba(255,255,255,0.76); }
.footer a:hover { color: var(--kao-gold-soft); }
.mobile-quote-dock { box-shadow: 0 -10px 30px rgba(3,17,30,0.18); }
.mobile-quote-request { background: var(--kao-gold); color: var(--kao-navy-deep); font-weight: 800; }

@media (max-width: 900px) {
  .hero { min-height: 650px; }
  .hero::after { width: 230px; opacity: 0.3; }
  .hero-content { margin-left: 48%; padding-right: 1.5rem; }
  .hero-headline { font-size: clamp(3rem, 8vw, 4.5rem); }
}

@media (max-width: 700px) {
  .topbar { display: none; }
  .header { background: var(--kao-navy); }
  .header-inner { min-height: 68px; }
  .hero { min-height: 580px; }
  .hero-bg { opacity: 0.27; object-position: 30% center; }
  .hero-overlay { background: linear-gradient(90deg, rgba(6,27,44,0.92), rgba(6,27,44,0.93)); }
  .hero::after { display: none; }
  .hero-content { margin-left: 0; padding: 6.5rem 1.4rem 5.5rem; text-align: left; }
  .hero-headline { font-size: clamp(3rem, 14vw, 4.35rem); }
  .hero-sub { font-size: 0.96rem; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .section { padding: 4rem 0; }
  .section-title { font-size: clamp(2.55rem, 12vw, 3.6rem); }
  .nav-cta { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}

/* Focused primary navigation with an accessible overflow menu. */
.header-inner {
  gap: clamp(0.75rem, 1.75vw, 1.75rem);
  min-height: 76px;
}
.nav { gap: clamp(0.55rem, 1.1vw, 1.05rem); }
.nav > a,
.nav-more summary {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0.25rem 0;
  color: rgba(255,255,255,0.84);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: clamp(0.66rem, 0.75vw, 0.74rem);
  font-weight: 750;
  letter-spacing: 0.075em;
  text-transform: uppercase;
  white-space: nowrap;
}
.nav-more { position: relative; }
.nav-more summary { cursor: pointer; list-style: none; gap: 0.4rem; }
.nav-more summary::-webkit-details-marker { display: none; }
.nav-more summary span { color: var(--kao-gold); font-size: 1rem; font-weight: 400; line-height: 1; }
.nav-more[open] summary,
.nav-more summary:hover,
.nav-more summary:focus-visible { color: var(--kao-gold-soft); outline: none; }
.nav-more[open] summary span { transform: rotate(45deg); }
.nav-more-menu {
  position: absolute;
  top: calc(100% + 0.55rem);
  right: -0.65rem;
  z-index: 1100;
  display: grid;
  min-width: 176px;
  padding: 0.55rem;
  border: 1px solid rgba(221,170,50,0.42);
  border-radius: 4px;
  background: #071c2e;
  box-shadow: 0 18px 42px rgba(3,17,30,0.28);
}
.nav-more-menu a {
  display: block;
  padding: 0.7rem 0.8rem;
  border-radius: 2px;
  color: rgba(255,255,255,0.82);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.065em;
  text-transform: uppercase;
}
.nav-more-menu a:hover,
.nav-more-menu a:focus-visible { background: rgba(221,170,50,0.12); color: var(--kao-gold-soft); outline: none; }
.header .nav-cta { margin-left: 0.15rem; padding: 0.7rem clamp(0.85rem, 1.3vw, 1.2rem); font-size: 0.74rem; white-space: nowrap; }

@media (max-width: 920px) {
  .header-inner { gap: 0.9rem; }
  .nav { gap: 0.65rem; }
  .nav > a,
  .nav-more summary { font-size: 0.64rem; letter-spacing: 0.055em; }
  .header .nav-cta { padding-inline: 0.8rem; font-size: 0.68rem; }
}

@media (max-width: 760px) {
  .header-inner { min-height: 68px; }
  .nav { display: none; }
  .nav.open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    z-index: 1100;
    padding: 0.75rem 1.25rem 1rem;
    border-bottom: 1px solid rgba(221,170,50,0.38);
    background: #071c2e;
    box-shadow: 0 18px 32px rgba(3,17,30,0.24);
  }
  .nav.open > a,
  .nav.open .nav-more summary { width: 100%; min-height: 46px; padding: 0.5rem 0; font-size: 0.75rem; }
  .nav-more-menu { position: static; min-width: 0; margin: 0.1rem 0 0.4rem; box-shadow: none; }
  .hamburger { display: block; color: #fff; }
  .header .nav-cta { display: none; }
}

/* V4 header: one legible Kao Electric identity and a compact navigation hierarchy. */
.header-inner {
  min-height: 74px;
  gap: clamp(0.9rem, 1.6vw, 1.5rem);
}
.logo-shine-wrap { gap: 0.55rem; }
.logo-img-nav {
  width: 42px;
  height: 42px;
  animation: none !important;
  filter: none !important;
}
.logo-text {
  display: inline-block;
  background: none !important;
  color: #fff !important;
  -webkit-text-fill-color: #fff !important;
  font-size: clamp(0.95rem, 1.2vw, 1.14rem) !important;
  font-weight: 850;
  letter-spacing: 0.055em;
  line-height: 1;
  white-space: nowrap;
  animation: none !important;
}
.logo-accent {
  display: inline;
  background: none !important;
  color: var(--kao-gold) !important;
  -webkit-text-fill-color: var(--kao-gold) !important;
  animation: none !important;
}
.nav { margin-left: auto; }
.nav > a,
.nav-more summary {
  min-height: 40px;
  font-size: clamp(0.67rem, 0.73vw, 0.73rem);
  font-weight: 700;
  letter-spacing: 0.06em;
}
.header .nav-cta {
  min-height: 42px;
  padding-inline: clamp(0.9rem, 1.35vw, 1.22rem);
  font-size: 0.71rem;
  letter-spacing: 0.065em;
}

@media (max-width: 980px) {
  .header-inner { gap: 0.7rem; }
  .logo-text { font-size: 0.9rem !important; }
  .nav { gap: 0.55rem; }
  .nav > a,
  .nav-more summary { font-size: 0.63rem; letter-spacing: 0.045em; }
  .header .nav-cta { padding-inline: 0.72rem; font-size: 0.65rem; }
}

@media (max-width: 760px) {
  .logo-img-nav { width: 34px; height: 34px; }
  .logo-text { font-size: 0.92rem !important; letter-spacing: 0.045em; }
}

/* V4 service-routing cards: restore the reviewed image-led first decision point. */
.project-router .router-grid { gap: clamp(0.8rem, 1.35vw, 1.2rem); }
.router-card--visual {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}
.router-card-image {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 0.72;
  object-fit: cover;
  object-position: center;
  background: #d9dee1;
  transition: transform 220ms var(--kao-ease);
}
.router-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.3rem 1.25rem 1.35rem;
}
.router-card-body h3 { margin: 0 0 0.55rem; }
.router-card-body p { margin: 0 0 1.1rem; }
.router-card-body .router-request { margin-top: 0.45rem; }
.router-card--visual:hover .router-card-image { transform: scale(1.025); }

/* Restore depth on small screens while preserving usable contrast and actions. */
@media (max-width: 700px) {
  .hero { min-height: 610px; }
  .hero-bg {
    opacity: 0.64;
    object-position: 22% center;
    filter: saturate(0.86) contrast(1.03) brightness(0.9);
  }
  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(3,17,30,0.42) 0%, rgba(3,17,30,0.62) 52%, rgba(3,17,30,0.86) 100%),
      linear-gradient(90deg, rgba(6,27,44,0.42) 0%, rgba(6,27,44,0.18) 100%);
  }
  .hero::before {
    opacity: 0.52;
    background:
      linear-gradient(135deg, transparent 0 64%, rgba(221,170,50,0.23) 64.2% 64.5%, transparent 64.7%),
      linear-gradient(90deg, rgba(3,17,30,0.20), rgba(6,27,44,0.18));
  }
  .hero::after {
    display: block;
    top: auto;
    right: -2.5rem;
    bottom: 1.5rem;
    width: 220px;
    height: 190px;
    opacity: 0.19;
  }
  .hero-content { padding: 5.35rem 1.4rem 5.5rem; }
  .router-card-image { aspect-ratio: 16 / 9; }
  .router-card-body { padding: 1.15rem 1.1rem 1.25rem; }
}

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