/* ==========================================================================
   TSN Electrical & Service — Industrial Supply Partner
   Design tokens
   ========================================================================== */
:root {
  /* Color */
  --charcoal:      #1B2027;   /* headers, footer, dark panels */
  --charcoal-soft:  #232A33;
  --steel:          #3C5064;  /* secondary headings / links */
  --steel-soft:     #55697D;
  --amber:          #E8A33D;  /* signature accent — safety amber */
  --amber-dark:     #C6821F;
  --paper:          #EEF0F2;  /* light section background, steel-tinted white */
  --paper-raised:   #FFFFFF;
  --ink:            #20242B;  /* body text */
  --ink-soft:       #545C66;
  --line:           #C7CDD3;
  --line-soft:      #DEE2E6;

  /* Type */
  --font-display: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --radius: 3px;
}

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

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--charcoal);
  margin: 0 0 0.5em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 600; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 600; }
h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: 0.06em; }

p { margin: 0 0 1em; color: var(--ink-soft); }

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber-dark);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--amber);
  display: inline-block;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, border-color .15s ease;
}
.btn-primary {
  background: var(--amber);
  color: var(--charcoal);
}
.btn-primary:hover { background: var(--amber-dark); transform: translateY(-1px); }
.btn-outline {
  border-color: var(--charcoal);
  color: var(--charcoal);
  background: transparent;
}
.btn-outline:hover { background: var(--charcoal); color: #fff; }
.btn-outline.on-dark {
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}
.btn-outline.on-dark:hover { background: #fff; color: var(--charcoal); }

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--charcoal);
  border-bottom: 3px solid var(--amber);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
}
.brand-mark {
  width: 40px; height: 40px;
  flex-shrink: 0;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-text strong {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 1.15rem;
}
.brand-text span {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--amber);
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
}
.nav-links a {
  color: #C9CFD6;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  padding: 10px 16px;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.nav-links a:hover,
.nav-links a.active {
  color: #fff;
  border-color: var(--amber);
}
.nav-cta {
  margin-left: 10px;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--charcoal);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height .25s ease;
  }
  .nav-links.open { max-height: 420px; border-top: 1px solid rgba(255,255,255,0.1); }
  .nav-links a { padding: 16px 24px; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav-cta { margin: 14px 24px 20px; }
}

/* ==========================================================================
   Hazard divider — signature structural device
   ========================================================================== */
.hazard-divider {
  height: 10px;
  background: repeating-linear-gradient(
    -45deg,
    var(--amber),
    var(--amber) 18px,
    var(--charcoal) 18px,
    var(--charcoal) 36px
  );
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  background: var(--charcoal);
  color: #fff;
  position: relative;
  overflow: hidden;
  padding: 90px 0 70px;
}
.hero::after {
  content: '';
  position: absolute;
  right: -10%;
  top: -20%;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(232,163,61,0.14) 0%, rgba(232,163,61,0) 70%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  position: relative;
}
.hero h1 { color: #fff; }
.hero .lede {
  color: #C9CFD6;
  font-size: 1.08rem;
  max-width: 46ch;
}
.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.plate {
  background: var(--charcoal-soft);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 26px;
  position: relative;
}
.plate::before, .plate::after,
.plate .bolt-tl, .plate .bolt-tr, .plate .bolt-bl, .plate .bolt-br {
  content: '';
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #9aa3ab, #4b535c 70%);
}
.plate::before { top: 10px; left: 10px; }
.plate::after { top: 10px; right: 10px; }
.plate .bolt-bl { bottom: 10px; left: 10px; }
.plate .bolt-br { bottom: 10px; right: 10px; }

.hero-plate-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 14px;
}
.spec-list { display: flex; flex-direction: column; gap: 12px; }
.spec-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(255,255,255,0.14);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.spec-row:last-child { border-bottom: none; padding-bottom: 0; }
.spec-row span:first-child { color: #9aa3ab; }
.spec-row span:last-child { color: #fff; text-align: right; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Sections
   ========================================================================== */
section { padding: 76px 0; }
.section-dark { background: var(--charcoal); color: #fff; }
.section-dark h2 { color: #fff; }
.section-dark p { color: #C9CFD6; }
.section-head {
  max-width: 640px;
  margin-bottom: 44px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---- Category / Nameplate cards ---- */
.grid { display: grid; gap: 24px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.nameplate {
  background: var(--paper-raised);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 28px 24px;
  position: relative;
  transition: border-color .15s ease, transform .15s ease;
}
.nameplate:hover { border-color: var(--amber); transform: translateY(-3px); }
.nameplate::before, .nameplate::after,
.nameplate .b3, .nameplate .b4 {
  content: '';
  position: absolute;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff, var(--line) 70%);
  border: 1px solid var(--line);
}
.nameplate::before { top: 9px; left: 9px; }
.nameplate::after { top: 9px; right: 9px; }
.nameplate .b3 { bottom: 9px; left: 9px; }
.nameplate .b4 { bottom: 9px; right: 9px; }

.nameplate .code {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--amber-dark);
  margin-bottom: 10px;
  display: block;
}
.nameplate .icon {
  width: 42px; height: 42px;
  margin-bottom: 16px;
  color: var(--steel);
}
.nameplate h3 { margin-bottom: 10px; }
.nameplate ul { display: flex; flex-direction: column; gap: 6px; margin-top: 10px; }
.nameplate li {
  font-size: 0.92rem;
  color: var(--ink-soft);
  padding-left: 14px;
  position: relative;
}
.nameplate li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.6em;
  width: 6px; height: 2px;
  background: var(--amber);
}

/* ---- Feature / why-choose rows ---- */
.feature-row {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}
.feature-row:last-child { border-bottom: none; }
.feature-num {
  font-family: var(--font-mono);
  color: var(--amber-dark);
  font-size: 0.85rem;
  padding-top: 3px;
  flex-shrink: 0;
  width: 42px;
}
.feature-row h3 { margin-bottom: 4px; }
.feature-row p { margin: 0; }

/* ---- Brand strip ---- */
.brand-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.brand-chip {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 18px;
  color: var(--steel);
  background: var(--paper-raised);
}

/* ---- CTA banner ---- */
.cta-banner {
  background: var(--steel);
  color: #fff;
  border-radius: var(--radius);
  padding: 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-banner h2 { color: #fff; margin-bottom: 6px; }
.cta-banner p { color: #DDE3E9; margin: 0; }

/* ---- Table (products page spec table) ---- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper-raised);
  border: 1px solid var(--line-soft);
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.94rem;
}
.spec-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: var(--paper);
}
.spec-table tr:last-child td { border-bottom: none; }

/* ---- Contact page ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

.field { margin-bottom: 20px; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.field input, .field textarea, .field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.96rem;
  background: var(--paper-raised);
  color: var(--ink);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(232,163,61,0.2);
}
.field textarea { resize: vertical; min-height: 120px; }

.contact-card {
  background: var(--charcoal);
  color: #fff;
  border-radius: var(--radius);
  padding: 32px;
}
.contact-card h3 { color: #fff; }
.contact-line {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.contact-line:last-child { border-bottom: none; }
.contact-line .ic { width: 20px; height: 20px; color: var(--amber); flex-shrink: 0; margin-top: 2px; }
.contact-line span, .contact-line a { color: #C9CFD6; font-size: 0.95rem; }
.contact-line a:hover { color: #fff; }

.map-embed {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 30px;
}
.map-embed iframe { width: 100%; height: 320px; border: 0; display: block; }

.form-note {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-top: -8px;
}

/* ==========================================================================
   Page hero (inner pages)
   ========================================================================== */
.page-hero {
  background: var(--charcoal);
  color: #fff;
  padding: 60px 0 44px;
}
.page-hero h1 { color: #fff; margin-bottom: 10px; }
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--amber);
  text-transform: uppercase;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--charcoal);
  color: #C9CFD6;
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer-grid h4 {
  color: #fff;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.footer-grid ul li { margin-bottom: 10px; font-size: 0.92rem; }
.footer-grid ul a:hover { color: #fff; }
.footer-brand p { color: #9aa3ab; max-width: 32ch; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  font-size: 0.82rem;
  color: #7d848c;
  flex-wrap: wrap;
  gap: 10px;
}
.whatsapp-fab {
  position: fixed;
  bottom: 22px;
  right: 22px;
  background: #25D366;
  color: #fff;
  width: 56px; height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
  z-index: 90;
  transition: transform .15s ease;
}
.whatsapp-fab:hover { transform: scale(1.08); }
.whatsapp-fab svg { width: 28px; height: 28px; }

/* Utility */
.mt-0 { margin-top: 0; }
.text-center { text-align: center; }
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.in { opacity: 1; transform: none; }

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