/* ==========================================================================
   PowerLine Engineering Contracting — Demo Website #1
   Design System implementation (see ../../DESIGN-SYSTEM.md)
   ========================================================================== */

/* ---- Design tokens ---- */
:root {
  /* Colors */
  --color-primary: #0f2a45;
  --color-primary-dark: #081726;
  --color-primary-light: #16385c;
  --color-steel: #4a5568;
  --color-steel-light: #718096;
  --color-accent: #f2a93b;
  --color-accent-dark: #d68f22;
  --color-neutral-light: #f7f8fa;
  --color-neutral-100: #eef1f4;
  --color-white: #ffffff;
  --color-text-dark: #111827;
  --color-text-body: #313b47;
  --color-text-light: #f5f6f7;
  --color-text-muted: #aab4c0;
  --color-border: #e2e6ea;
  --color-border-dark: #223650;

  /* Typography */
  --font-heading: "Segoe UI", "Helvetica Neue", Arial, system-ui, -apple-system, sans-serif;
  --font-body: "Segoe UI", "Helvetica Neue", Arial, system-ui, -apple-system, sans-serif;

  /* Spacing scale (8px base) */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 8rem;

  /* Layout */
  --container-max: 1240px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 2px 8px rgba(15, 42, 69, 0.08);
  --shadow-md: 0 8px 24px rgba(15, 42, 69, 0.12);
  --shadow-lg: 0 16px 40px rgba(15, 42, 69, 0.18);
  --transition-fast: 0.18s ease;
  --transition-base: 0.28s ease;
  --header-height: 84px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul[class], ol[class] { list-style: none; padding: 0; }
img, picture, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }

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

body {
  font-family: var(--font-body);
  color: var(--color-text-body);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-text-dark);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.25rem, 4.2vw, 3.4rem); }
h2 { font-size: clamp(1.75rem, 2.8vw, 2.35rem); }
h3 { font-size: 1.25rem; }
p { max-width: 62ch; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.section {
  padding-block: var(--space-7);
}

.section--tight { padding-block: var(--space-6); }

.section--dark {
  background: var(--color-primary);
  color: var(--color-text-light);
}
.section--dark h2, .section--dark h3 { color: var(--color-white); }
.section--dark p { color: var(--color-text-muted); }

.section--light { background: var(--color-neutral-light); }

.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.section-header {
  max-width: 720px;
  margin-bottom: var(--space-5);
}

.section-header p { margin-top: var(--space-2); font-size: 1.05rem; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.7rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; }

.btn--accent {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}
.btn--accent:hover { background: var(--color-accent-dark); box-shadow: var(--shadow-md); }

.btn--outline-light {
  border-color: rgba(245, 246, 247, 0.55);
  color: var(--color-text-light);
}
.btn--outline-light:hover { border-color: var(--color-white); background: rgba(255, 255, 255, 0.08); }

.btn--outline-dark {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--outline-dark:hover { background: var(--color-primary); color: var(--color-white); }

.btn--whatsapp {
  background: #1f7a5c;
  color: var(--color-white);
}
.btn--whatsapp:hover { background: #175f47; }

.btn--sm { padding: 0.6rem 1.1rem; font-size: 0.85rem; }
.btn--block { width: 100%; justify-content: center; }

/* ---- Header / Navigation ---- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--transition-base), box-shadow var(--transition-base), height var(--transition-base);
}

.site-header.is-scrolled,
.site-header.is-inner {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
  height: 72px;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: linear-gradient(145deg, var(--color-accent), var(--color-accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-mark svg { width: 22px; height: 22px; }

.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text .brand-sub {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.main-nav { display: flex; align-items: center; gap: var(--space-4); }
.nav-links { display: flex; gap: var(--space-3); }
.nav-links a {
  color: var(--color-text-light);
  font-weight: 600;
  font-size: 0.92rem;
  padding-block: 0.4rem;
  position: relative;
}
.nav-links a::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block-end: -2px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
}
.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after { width: 100%; }
.nav-links a[aria-current="page"] { color: var(--color-accent); }

.header-actions { display: flex; align-items: center; gap: 0.75rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: 0;
  padding: 0.5rem;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-block-start: var(--header-height);
  background:
    linear-gradient(120deg, rgba(8, 23, 38, 0.94) 0%, rgba(15, 42, 69, 0.88) 55%, rgba(15, 42, 69, 0.72) 100%),
    repeating-linear-gradient(115deg, rgba(255,255,255,0.035) 0 2px, transparent 2px 48px),
    var(--color-primary-dark);
  color: var(--color-text-light);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(242, 169, 59, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 169, 59, 0.08) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 75%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.hero-eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--color-accent);
}

.hero h1 { color: var(--color-white); margin-bottom: var(--space-3); }
.hero-lede { font-size: 1.15rem; color: var(--color-text-muted); max-width: 58ch; margin-bottom: var(--space-4); }
.hero-ctas { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-6); }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  border-top: 1px solid rgba(245, 246, 247, 0.15);
  padding-top: var(--space-4);
  max-width: 900px;
}
.stat-block .stat-num {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 700;
  color: var(--color-accent);
}
.stat-block .stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}

/* ---- Page (inner) hero ---- */
.page-hero {
  padding-block: calc(var(--header-height) + var(--space-6)) var(--space-6);
  background:
    linear-gradient(120deg, rgba(8, 23, 38, 0.96), rgba(15, 42, 69, 0.9)),
    repeating-linear-gradient(115deg, rgba(255,255,255,0.03) 0 2px, transparent 2px 48px),
    var(--color-primary-dark);
  color: var(--color-text-light);
}
.page-hero h1 { color: var(--color-white); max-width: 44rem; }
.page-hero .breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}
.page-hero .breadcrumb a:hover { color: var(--color-accent); }
.page-hero-lede { margin-top: var(--space-2); font-size: 1.05rem; color: var(--color-text-muted); max-width: 60ch; }

/* ---- Placeholder visual blocks (stand-in for future Higgsfield imagery) ---- */
.media-placeholder {
  position: relative;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 140% at 15% 0%, rgba(242, 169, 59, 0.14), transparent 55%),
    linear-gradient(150deg, var(--color-primary-light), var(--color-primary-dark));
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.6rem;
  padding: var(--space-4);
  min-height: 220px;
  color: var(--color-text-light);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.media-placeholder:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.media-placeholder .ph-icon {
  width: 44px;
  height: 44px;
  padding: 10px;
  box-sizing: content-box;
  border-radius: 999px;
  background: rgba(242, 169, 59, 0.16);
  color: var(--color-accent);
}
.media-placeholder .ph-label {
  font-weight: 700;
  color: var(--color-white);
  font-size: 0.95rem;
}
.media-placeholder .ph-tag {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--color-primary-dark);
  background: var(--color-accent);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}
.media-placeholder--tall { min-height: 340px; }
.media-placeholder--card { min-height: 170px; }

/* ---- Trust bar ---- */
.trust-bar {
  background: var(--color-neutral-light);
  border-bottom: 1px solid var(--color-border);
}
.trust-bar .container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  padding-block: var(--space-4);
}
.trust-bar .stat-block .stat-num { color: var(--color-primary); }
.trust-bar .stat-block .stat-label { color: var(--color-steel); }
.demo-note {
  font-size: 0.72rem;
  color: var(--color-steel-light);
  font-style: italic;
  width: 100%;
  margin-top: var(--space-1);
}

/* ---- Grids & Cards ---- */
.grid {
  display: grid;
  gap: var(--space-3);
}
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(242, 169, 59, 0.4);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(15, 42, 69, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
  color: var(--color-primary);
}
.card-icon svg { width: 24px; height: 24px; }

.card h3 { margin-bottom: 0.5rem; }
.card p { font-size: 0.95rem; color: var(--color-steel); margin-bottom: var(--space-2); }
.card-link {
  margin-top: auto;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.card-link svg { width: 14px; height: 14px; transition: transform var(--transition-fast); }
.card-link:hover svg { transform: translateX(3px); }
.card-link:hover { color: var(--color-accent-dark); }

/* Project cards */
.project-card { padding: 0; overflow: hidden; }
.project-card .media-placeholder { border-radius: 0; border-width: 0 0 1.5px 0; min-height: 190px; }
.project-card-body { padding: var(--space-3); display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.tag-row { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: rgba(15, 42, 69, 0.08);
  color: var(--color-primary);
}
.tag--accent { background: rgba(242, 169, 59, 0.16); color: var(--color-accent-dark); }

/* ---- CTA band ---- */
.cta-band {
  background: linear-gradient(120deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
  text-align: center;
  padding-block: var(--space-6);
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(115deg, rgba(255,255,255,0.03) 0 2px, transparent 2px 48px);
}
.cta-band .container { position: relative; z-index: 1; }
.cta-band h2 { color: var(--color-white); margin-bottom: var(--space-1); }
.cta-band p { color: var(--color-text-muted); margin-inline: auto; margin-bottom: var(--space-3); }
.cta-actions { display: flex; gap: var(--space-2); justify-content: center; flex-wrap: wrap; }

/* ---- HSE / stat blocks (light section variant) ---- */
.hse-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-5); align-items: center; }
.hse-points { display: grid; gap: var(--space-2); margin-top: var(--space-3); }
.hse-point { display: flex; gap: 0.9rem; align-items: flex-start; }
.hse-point .point-icon {
  width: 38px; height: 38px; flex-shrink: 0;
  border-radius: 50%;
  background: rgba(242, 169, 59, 0.14);
  color: var(--color-accent-dark);
  display: flex; align-items: center; justify-content: center;
}
.hse-point .point-icon svg { width: 19px; height: 19px; }
.hse-point h3 { font-size: 1rem; margin-bottom: 0.2rem; }
.hse-point p { font-size: 0.92rem; color: var(--color-steel); }

.cert-strip { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.cert-chip {
  border: 1px dashed var(--color-border-dark);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-steel);
  background: var(--color-white);
}

/* ---- About page specifics ---- */
.about-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: var(--space-5); align-items: center; }
.strength-list { display: grid; gap: var(--space-3); margin-top: var(--space-3); }
.strength-item { display: flex; gap: var(--space-2); }
.strength-num {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-accent);
  font-size: 1.3rem;
  flex-shrink: 0;
  width: 2.2rem;
}

/* ---- Forms ---- */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-5); align-items: start; }

.form-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.form-row { display: grid; gap: var(--space-1); margin-bottom: var(--space-2); }
.form-row--split { grid-template-columns: 1fr 1fr; gap: var(--space-2); display: grid; }
.form-row label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
}
.form-row input,
.form-row select,
.form-row textarea {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  font-size: 0.95rem;
  background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(242, 169, 59, 0.2);
}
.form-note { font-size: 0.8rem; color: var(--color-steel-light); margin-top: var(--space-2); }
.form-status {
  margin-top: var(--space-2);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  display: none;
}
.form-status.is-visible { display: block; }
.form-status.is-success { background: rgba(31, 122, 92, 0.12); color: #1f7a5c; }

.contact-info-card {
  background: var(--color-primary-dark);
  color: var(--color-text-light);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}
.contact-info-card h3 { color: var(--color-white); }
.contact-info-list { display: grid; gap: var(--space-3); margin-top: var(--space-3); }
.contact-info-item { display: flex; gap: 0.9rem; align-items: flex-start; }
.contact-info-item .ci-icon {
  width: 38px; height: 38px; flex-shrink: 0; border-radius: var(--radius-sm);
  background: rgba(242, 169, 59, 0.16); color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
}
.contact-info-item .ci-icon svg { width: 18px; height: 18px; }
.contact-info-item .ci-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); font-weight: 700; }
.contact-info-item .ci-value { font-weight: 600; color: var(--color-white); }

/* ---- Floating WhatsApp button ---- */
.whatsapp-float {
  position: fixed;
  inset-block-end: var(--space-3);
  inset-inline-end: var(--space-3);
  z-index: 90;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #1f7a5c;
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-fast), background var(--transition-fast);
}
.whatsapp-float:hover { transform: scale(1.08); background: #175f47; }
.whatsapp-float svg { width: 28px; height: 28px; }

/* ---- Footer ---- */
.site-footer {
  background: var(--color-primary-dark);
  color: var(--color-text-muted);
}
.footer-main {
  padding-block: var(--space-6);
  display: grid;
  grid-template-columns: 1.3fr 0.9fr 1fr 1.1fr;
  gap: var(--space-4);
}
.footer-brand p { color: var(--color-text-muted); font-size: 0.92rem; margin-top: var(--space-2); }
.footer-col h3 {
  color: var(--color-white);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.footer-col ul { display: grid; gap: 0.6rem; }
.footer-col a { font-size: 0.9rem; transition: color var(--transition-fast); }
.footer-col a:hover { color: var(--color-accent); }
.footer-social { display: flex; gap: 0.6rem; margin-top: var(--space-2); }
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(245,246,247,0.08);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition-fast);
}
.footer-social a:hover { background: var(--color-accent); color: var(--color-primary-dark); }
.footer-social svg { width: 16px; height: 16px; }

.footer-bottom {
  border-top: 1px solid rgba(245, 246, 247, 0.1);
  padding-block: var(--space-2);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
}

/* ---- Scroll-reveal animation ---- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---- Skip link (accessibility) ---- */
.skip-link {
  position: absolute;
  inset-inline-start: var(--space-2);
  inset-block-start: -60px;
  background: var(--color-accent);
  color: var(--color-primary-dark);
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 200;
  transition: top var(--transition-fast);
}
.skip-link:focus { inset-block-start: var(--space-2); }

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

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-grid,
  .hse-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links,
  .header-actions .btn--outline-light { display: none; }
  .main-nav.is-open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    inset-inline: 0;
    top: 72px;
    background: var(--color-primary-dark);
    padding: var(--space-3);
    gap: var(--space-2);
    box-shadow: var(--shadow-md);
  }
  .nav-toggle { display: flex; }
  .grid--3, .grid--2, .grid--4 { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; padding-block: var(--space-5); }
  .form-row--split { grid-template-columns: 1fr; }
  .hero-ctas .btn,
  .cta-actions .btn { width: 100%; justify-content: center; }
  .hero-ctas, .cta-actions { flex-direction: column; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .section { padding-block: var(--space-6); }
  .whatsapp-float { width: 50px; height: 50px; inset-block-end: var(--space-2); inset-inline-end: var(--space-2); }
}