/* ============================================================
   SIE — Smart Interior Engineering
   Design System v1.0
   ============================================================ */

:root {
  /* Palette */
  --charcoal: #0F1419;
  --charcoal-2: #1A2028;
  --charcoal-3: #2A323C;
  --paper: #F5F2ED;
  --paper-2: #EDE8DE;
  --white: #FFFFFF;
  --bronze: #C86D3C;
  --bronze-dark: #A85A2E;
  --bronze-tint: #F5E4D6;
  --concrete: #5A5F66;
  --concrete-2: #8A8F96;
  --rule: #E5DFD3;
  --rule-dark: #3A4148;
  --success: #4A7C59;
  --danger: #B54B3C;

  /* Type */
  --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* Scale */
  --step--1: clamp(0.75rem, 0.71rem + 0.2vw, 0.875rem);
  --step-0: clamp(0.9375rem, 0.9rem + 0.2vw, 1rem);
  --step-1: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  --step-2: clamp(1.25rem, 1.15rem + 0.6vw, 1.625rem);
  --step-3: clamp(1.625rem, 1.4rem + 1.2vw, 2.25rem);
  --step-4: clamp(1.9rem, 1.5rem + 1.9vw, 3.5rem);
  --step-5: clamp(2.15rem, 1.5rem + 3.2vw, 5rem);

  /* Layout */
  --wrap: 1240px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(4rem, 8vw, 7rem);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--charcoal);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; }
input, select, textarea { font: inherit; }
:focus-visible { outline: 2px solid var(--bronze); outline-offset: 3px; border-radius: 2px; }

/* ---------- Layout ---------- */
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: var(--section-y) 0; }
.section--tight { padding: calc(var(--section-y) * 0.6) 0; }
.section--dark { background: var(--charcoal); color: var(--paper); }
.section--dark .eyebrow { color: var(--bronze); }
.section--dark .rule { border-color: var(--rule-dark); }

.grid { display: grid; gap: 1.5rem; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid--split { grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 900px) { .grid--split { grid-template-columns: 5fr 7fr; gap: 4rem; } }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.1; letter-spacing: -0.015em; }
h1 { font-size: var(--step-5); font-weight: 500; letter-spacing: -0.025em; }
h2 { font-size: var(--step-4); font-weight: 500; letter-spacing: -0.02em; }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); }
p { max-width: 62ch; }
p + p { margin-top: 1rem; }
strong { font-weight: 600; }

.lead {
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--concrete);
  max-width: 60ch;
}
.section--dark .lead { color: rgba(245,242,237,0.75); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bronze);
  margin-bottom: 1.25rem;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
}

/* Drawing revision tag — signature element */
.rev-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.35rem 0.6rem 0.35rem 0.75rem;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--charcoal);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 2px;
}
.rev-tag--dark { background: var(--charcoal-2); border-color: var(--rule-dark); color: var(--paper); }
.rev-tag .dot { width: 6px; height: 6px; background: var(--bronze); border-radius: 50%; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.4rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-0);
  letter-spacing: -0.005em;
  border-radius: 2px;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--bronze); color: var(--white); }
.btn--primary:hover { background: var(--bronze-dark); }
.btn--ghost { background: transparent; color: var(--charcoal); border: 1px solid var(--charcoal); }
.btn--ghost:hover { background: var(--charcoal); color: var(--paper); }
.section--dark .btn--ghost { color: var(--paper); border-color: var(--paper); }
.section--dark .btn--ghost:hover { background: var(--paper); color: var(--charcoal); }
.btn--whatsapp { background: #25D366; color: var(--white); }
.btn--whatsapp:hover { background: #1EBE5A; }
.btn--sm { padding: 0.6rem 0.9rem; font-size: 0.875rem; }
.btn .arr { transition: transform 0.2s ease; }
.btn:hover .arr { transform: translateX(3px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245,242,237,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
  min-width: 0;
}
@media (max-width: 560px) {
  .logo { font-size: 0.95rem; }
  .logo span:last-child {
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 9.5rem;
  }
}
@media (max-width: 380px) {
  .logo span:last-child { display: none; }
}
.logo-mark {
  width: 30px; height: 30px;
  background: var(--charcoal);
  color: var(--bronze);
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 2px;
}
.nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}
@media (min-width: 1000px) { .nav { display: flex; } }
.nav a {
  font-size: 0.925rem;
  color: var(--charcoal);
  transition: color 0.15s ease;
  position: relative;
}
.nav a:hover { color: var(--bronze); }
.nav a.is-active { color: var(--bronze); }
.header-cta { display: flex; align-items: center; gap: 0.5rem; }
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
}
@media (min-width: 1000px) { .nav-toggle { display: none; } }
.nav-toggle span { display: block; width: 20px; height: 1.5px; background: var(--charcoal); }

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--charcoal);
  color: var(--paper);
  padding: 5rem var(--gutter) 3rem;
  overflow-y: auto;
}
.mobile-nav.is-open { display: block; }
.mobile-nav__close {
  position: absolute;
  top: 1.25rem;
  right: var(--gutter);
  color: var(--paper);
  font-size: 1.5rem;
  padding: 0.5rem;
}
.mobile-nav a {
  display: block;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule-dark);
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--paper);
}
.mobile-nav .btn { margin-top: 2rem; width: 100%; justify-content: center; }

/* ---------- Hero ---------- */
.hero {
  padding: clamp(2rem, 8vw, 6rem) 0 clamp(3rem, 10vw, 8rem);
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: end;
}
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 7fr 5fr; gap: 4rem; }
}
.hero h1 { margin-top: 1.5rem; }
.hero .lead { margin-top: 1.5rem; }
.hero-ctas {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.hero-side {
  border-left: 1px solid var(--rule);
  padding-left: 2rem;
  display: grid;
  gap: 1.5rem;
}
@media (max-width: 899px) {
  .hero-side { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); padding-top: 2rem; }
}
.hero-stat {
  display: grid;
  gap: 0.25rem;
}
.hero-stat__num {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--charcoal);
}
.hero-stat__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--concrete);
}

/* ---------- Blueprint hero visual ---------- */
.blueprint {
  position: relative;
  background: var(--charcoal);
  border-radius: 3px;
  padding: 1.5rem;
  min-height: 320px;
  background-image:
    linear-gradient(to right, rgba(200,109,60,0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(200,109,60,0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--paper);
  overflow: hidden;
  box-shadow: 0 20px 60px -20px rgba(15,20,25,0.3);
}
.blueprint__corner {
  position: absolute;
  width: 12px; height: 12px;
  border: 1px solid var(--bronze);
}
.blueprint__corner--tl { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.blueprint__corner--tr { top: 8px; right: 8px; border-left: 0; border-bottom: 0; }
.blueprint__corner--bl { bottom: 8px; left: 8px; border-right: 0; border-top: 0; }
.blueprint__corner--br { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }
.blueprint__label {
  position: absolute;
  bottom: 1rem; left: 1.5rem; right: 1.5rem;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(245,242,237,0.6);
  border-top: 1px solid rgba(245,242,237,0.15);
  padding-top: 0.75rem;
}

/* ---------- Trust bar ---------- */
.trust {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 2rem 0;
  background: var(--paper-2);
}
.trust-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.trust-item h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bronze);
  margin-bottom: 0.5rem;
}
.trust-item p {
  font-size: 0.95rem;
  color: var(--concrete);
  line-height: 1.45;
}

/* ---------- Service cards ---------- */
.service-card {
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 2rem;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 3px;
  transition: transform 0.2s ease, border-color 0.2s ease;
  position: relative;
  overflow: hidden;
}
.service-card:hover { transform: translateY(-3px); border-color: var(--bronze); }
.service-card__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--concrete);
  letter-spacing: 0.06em;
  margin-bottom: 1.25rem;
}
.service-card h3 {
  font-size: var(--step-1);
  margin-bottom: 0.75rem;
}
.service-card p {
  color: var(--concrete);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}
.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--charcoal);
  font-weight: 500;
  font-size: 0.9rem;
  border-top: 1px solid var(--rule);
  padding-top: 1.25rem;
}
.service-card__link:hover { color: var(--bronze); }

/* ---------- Problem/solution split ---------- */
.problem-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
.problem-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.9rem 1.1rem;
  background: var(--paper);
  border-left: 3px solid var(--rule);
  font-size: 0.95rem;
}
.problem-list li::before {
  content: "×";
  color: var(--danger);
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1;
}
.solution-list li { border-left-color: var(--bronze); background: var(--white); }
.solution-list li::before { content: "→"; color: var(--bronze); }

/* ---------- Workflow diagram ---------- */
.workflow {
  display: grid;
  gap: 0.5rem;
  padding: 2rem;
  background: var(--charcoal);
  color: var(--paper);
  border-radius: 3px;
  position: relative;
}
.workflow-step {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule-dark);
}
.workflow-step:last-child { border-bottom: 0; }
.workflow-step__id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--bronze);
  letter-spacing: 0.06em;
}
.workflow-step__label {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
}
.workflow-step__arr {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(245,242,237,0.5);
  font-size: 0.8rem;
  margin-top: 0.25rem;
}

/* Before/After compare */
.compare {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .compare { grid-template-columns: 1fr 1fr; } }
.compare__col {
  padding: 1.75rem;
  border-radius: 3px;
}
.compare__col--before {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  color: var(--charcoal);
}
.compare__col--before h4 { color: var(--bronze-dark); }
.compare__col--before li::before { color: var(--concrete); }
.compare__col--after {
  background: var(--charcoal);
  color: var(--paper);
}
.compare__col h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  color: var(--bronze);
}
.compare__col ul { list-style: none; padding: 0; display: grid; gap: 0.5rem; font-size: 0.95rem; }
.compare__col li { padding-left: 1.25rem; position: relative; }
.compare__col--before li::before { content: "—"; position: absolute; left: 0; color: var(--concrete); }
.compare__col--after li::before { content: "→"; position: absolute; left: 0; color: var(--bronze); }

/* ---------- Steps ---------- */
.steps {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step {
  padding: 1.75rem;
  background: var(--white);
  border-top: 3px solid var(--bronze);
  border-radius: 0 0 3px 3px;
}
.step__id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--bronze);
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
.step h4 { margin-bottom: 0.5rem; font-size: var(--step-1); }
.step p { color: var(--concrete); font-size: 0.95rem; }

/* ---------- Industries ---------- */
.industries {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.industries div {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0.85rem 1.15rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: background 0.15s ease;
}
.industries div:hover { background: var(--white); border-color: var(--bronze); }
.industries div::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--bronze);
  border-radius: 50%;
}

/* ---------- Portfolio ---------- */
.portfolio-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.portfolio-item {
  background: var(--white);
  border: 1px solid var(--rule);
  overflow: hidden;
  border-radius: 3px;
  transition: transform 0.2s ease;
}
.portfolio-item:hover { transform: translateY(-3px); }
.portfolio-item__thumb {
  aspect-ratio: 4/3;
  background: var(--paper-2);
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.portfolio-item__thumb svg { width: 60%; height: 60%; opacity: 0.4; }
.portfolio-item__thumb .sample-tag {
  position: absolute;
  top: 0.75rem; left: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  background: var(--charcoal);
  color: var(--bronze);
  letter-spacing: 0.06em;
}
.portfolio-item__body { padding: 1.25rem 1.5rem 1.5rem; }
.portfolio-item__cat {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bronze);
  margin-bottom: 0.5rem;
}
.portfolio-item h4 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.portfolio-item p { font-size: 0.9rem; color: var(--concrete); }

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.price-card {
  padding: 2rem;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 3px;
  display: flex;
  flex-direction: column;
}
.price-card--featured {
  background: var(--charcoal);
  color: var(--paper);
  border-color: var(--charcoal);
}
.price-card__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bronze);
  margin-bottom: 0.75rem;
}
.price-card h3 { font-size: var(--step-1); margin-bottom: 1rem; }
.price-card__price {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
  line-height: 1;
}
.price-card__from { font-family: var(--font-mono); font-size: 0.75rem; color: var(--concrete); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 1.5rem; }
.price-card--featured .price-card__from { color: rgba(245,242,237,0.6); }
.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  display: grid;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--concrete);
  flex: 1;
}
.price-card--featured ul { color: rgba(245,242,237,0.8); }
.price-card li { padding-left: 1.25rem; position: relative; }
.price-card li::before { content: "→"; position: absolute; left: 0; color: var(--bronze); }
.price-card .btn { width: 100%; justify-content: center; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.faq-item { border-bottom: 1px solid var(--rule); }
.faq-item summary {
  padding: 1.5rem 3rem 1.5rem 0;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-1);
  position: relative;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0.5rem;
  top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--bronze);
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p {
  padding: 0 0 1.5rem;
  color: var(--concrete);
  max-width: 68ch;
}

/* ---------- Forms ---------- */
.form {
  display: grid;
  gap: 1.25rem;
}
.form-row {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .form-row--2 { grid-template-columns: 1fr 1fr; } }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--concrete);
  margin-bottom: 0.5rem;
}
.field label .req { color: var(--bronze); }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 2px;
  font-size: 0.95rem;
  color: var(--charcoal);
  transition: border-color 0.15s ease;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--bronze); outline: 0; }
.field input[type="file"] { padding: 0.6rem; background: var(--paper); }
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.form-note {
  font-size: 0.85rem;
  color: var(--concrete);
  margin-top: 0.5rem;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--charcoal);
  color: var(--paper);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
  margin-bottom: 3rem;
}
@media (min-width: 700px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bronze);
  margin-bottom: 1.25rem;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}
.footer-col a {
  color: rgba(245,242,237,0.75);
  font-size: 0.925rem;
  transition: color 0.15s ease;
}
.footer-col a:hover { color: var(--bronze); }
.footer-brand p {
  color: rgba(245,242,237,0.65);
  font-size: 0.9rem;
  margin-top: 1rem;
  max-width: 42ch;
}
.footer-bottom {
  border-top: 1px solid var(--rule-dark);
  padding-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: 0.825rem;
  color: rgba(245,242,237,0.55);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* ---------- Floating WhatsApp ---------- */
.wa-float {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: 40;
  width: 56px; height: 56px;
  background: #25D366;
  color: white;
  border-radius: 50%;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 24px -6px rgba(37,211,102,0.5);
  transition: transform 0.2s ease;
}
.wa-float:hover { transform: scale(1.08); }
.wa-float svg { width: 28px; height: 28px; }

/* ---------- Utility ---------- */
.rule { border: 0; border-top: 1px solid var(--rule); margin: 0; }
.center { text-align: center; }
.mt-4 { margin-top: 2rem; }
.mt-6 { margin-top: 3rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-6 { margin-bottom: 3rem; }
.mono { font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.02em; }
.text-concrete { color: var(--concrete); }
.section-head {
  display: grid;
  gap: 1rem;
  margin-bottom: 3rem;
  max-width: 68ch;
}
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head--center .eyebrow { justify-self: center; }

/* Breadcrumbs */
.crumbs {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--concrete);
  padding: 1.5rem 0 0;
}
.crumbs a { color: var(--concrete); }
.crumbs a:hover { color: var(--bronze); }
.crumbs .sep { color: var(--rule); margin: 0 0.5rem; }

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