/* ==========================================================================
   NÓRDIKA REFORMAS — hoja de estilos principal
   ========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600&family=Inter:wght@400;500;600&display=swap");

:root {
  /* Paleta */
  --color-bg: #faf8f5;
  --color-bg-alt: #f1ede7;
  --color-carbon: #1c1b19;
  --color-carbon-soft: #2c2b28;
  --color-text: #2c2b28;
  --color-text-muted: #6f6b64;
  --color-border: #e4dfd8;

  --color-accent: #c1502e;       /* terracota */
  --color-accent-dark: #a6421f;
  --color-accent-soft: #f3ddd2;
  --color-sage: #5f7a5a;         /* verde salvia */
  --color-sage-dark: #4a6146;
  --color-sage-soft: #e2e9df;

  /* Tipografía */
  --font-heading: "Poppins", sans-serif;
  --font-body: "Inter", sans-serif;

  /* Espaciado */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;

  --radius: 6px;
  --radius-lg: 14px;
  --shadow-soft: 0 20px 45px -25px rgba(28, 27, 25, 0.35);
  --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);

  --container-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.15;
  margin: 0;
  letter-spacing: -0.01em;
}

h1 { font-weight: 300; }

p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-accent);
  display: inline-block;
}

.muted {
  color: var(--color-text-muted);
}

.section {
  padding: var(--space-xl) 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-heading {
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

.section-heading.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading h2 {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
}

.section-heading p {
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* ---------- Botones ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.9rem;
  background: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}

.button:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.button-ghost {
  background: transparent;
  color: var(--color-carbon);
  border-color: var(--color-carbon);
}

.button-ghost:hover {
  background: var(--color-carbon);
  color: #fff;
  border-color: var(--color-carbon);
}

.button-light {
  background: #fff;
  color: var(--color-carbon);
  border-color: #fff;
}

.button-light:hover {
  background: var(--color-bg-alt);
  transform: translateY(-2px);
}

.button-small {
  padding: 0.6rem 1.3rem;
  font-size: 0.85rem;
}

.button-block {
  width: 100%;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  color: var(--color-carbon);
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
  transition: color var(--transition), gap var(--transition);
}

.text-link:hover {
  color: var(--color-accent);
  gap: 0.6rem;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 245, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  height: 84px;
}

.brand {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
}

.brand-accent {
  color: var(--color-accent);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-carbon);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-carbon);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(28, 27, 25, 0.35) 0%, rgba(28, 27, 25, 0.75) 100%);
}

.hero-content {
  position: relative;
  padding-bottom: var(--space-xl);
  max-width: 700px;
}

.hero-content .eyebrow {
  color: #f0c4ac;
}

.hero-content .eyebrow::before {
  background: #f0c4ac;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  margin-bottom: var(--space-sm);
}

.hero-text {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 540px;
  margin-bottom: var(--space-md);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-simple {
  min-height: 46vh;
  align-items: center;
}

.hero-simple .hero-content {
  padding-bottom: 0;
}

/* ---------- Trust strip ---------- */
.trust-strip {
  border-bottom: 1px solid var(--color-border);
  background: #fff;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  text-align: center;
}

.trust-grid strong {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 500;
  color: var(--color-carbon);
}

.trust-grid span {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ---------- Split section (imagen + texto) ---------- */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.split-section.reverse .split-media {
  order: 2;
}

.split-media img {
  border-radius: var(--radius-lg);
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
}

.split-copy h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: var(--space-sm);
}

.split-copy p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  font-size: 1.05rem;
}

/* ---------- Tarjetas ---------- */
.card-grid {
  display: grid;
  gap: var(--space-md);
}

.three-up { grid-template-columns: repeat(3, 1fr); }
.four-up { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
}

.service-card {
  padding: var(--space-md);
  text-align: left;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.service-icon svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
}

.service-card:nth-child(2) .service-icon {
  background: var(--color-sage-soft);
  color: var(--color-sage);
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
}

.service-card p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.project-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.card-body {
  padding: 1.4rem;
}

.card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
}

.card-body p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.9rem;
}

/* ---------- Proceso / pasos ---------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  position: relative;
}

.steps-grid::before {
  content: "";
  position: absolute;
  top: 26px;
  left: 6%;
  right: 6%;
  height: 1px;
  background: var(--color-border);
}

.step-card {
  position: relative;
  padding-top: var(--space-md);
}

.step-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-carbon);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  margin-bottom: var(--space-sm);
  position: relative;
  z-index: 1;
}

.step-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.step-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ---------- Testimonios ---------- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.testimonial-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
}

.stars {
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-sm);
  font-size: 0.95rem;
}

.testimonial-quote {
  font-size: 1.02rem;
  margin-bottom: var(--space-md);
  color: var(--color-carbon-soft);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.testimonial-author img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial-author strong {
  display: block;
  font-size: 0.95rem;
}

.testimonial-author span {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ---------- CTA final con formulario ---------- */
.contact-cta {
  background: var(--color-carbon);
  color: #fff;
}

.contact-cta .eyebrow { color: #e79c78; }
.contact-cta .eyebrow::before { background: #e79c78; }
.contact-cta p:not(.eyebrow) { color: rgba(255,255,255,0.7); }

.contact-cta-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.contact-cta-shell h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: #fff;
  margin-bottom: var(--space-sm);
}

/* ---------- Formularios ---------- */
.form-grid {
  display: grid;
  gap: 1.1rem;
}

.form-grid.two-col {
  grid-template-columns: 1fr 1fr;
}

.form-grid label,
.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.contact-cta .form-grid label,
.contact-cta .contact-form label {
  color: rgba(255, 255, 255, 0.75);
}

input,
select,
textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
  width: 100%;
}

.contact-cta input,
.contact-cta select,
.contact-cta textarea {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
}

.contact-cta ::placeholder { color: rgba(255,255,255,0.45); }

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.checkbox-field {
  flex-direction: row !important;
  align-items: flex-start;
  gap: 0.6rem !important;
  font-weight: 400 !important;
}

.checkbox-field input {
  width: auto;
  margin-top: 0.25rem;
}

.form-success {
  margin-top: 0.9rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-sage);
  min-height: 1.2em;
}

.contact-cta .form-success { color: #9fd6a6; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-carbon);
  color: rgba(255, 255, 255, 0.75);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 0.8rem;
  display: block;
}

.footer-grid h3 {
  color: #fff;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-grid ul li {
  margin-bottom: 0.6rem;
  font-size: 0.92rem;
}

.footer-grid ul a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.45);
}

/* Firma personal del diseñador (assets/signature-kit) — sello de autoría discreto.
   Footer oscuro de Nórdika → versión sobre fondo oscuro. Único valor a ajustar
   por proyecto: --signature-color (ver signature-kit/README.md). */
.site-signature {
  --signature-color: rgba(255, 255, 255, 0.45);
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--signature-color);
  transition: opacity 0.25s ease;
}

.site-signature:hover,
.site-signature:focus-within {
  opacity: 0.85;
}

.site-signature__mark {
  width: 18px;
  height: 18px;
  display: block;
  flex: none;
}

.site-signature__text {
  font-size: 0.68rem;
  letter-spacing: 0.03em;
  font-family: inherit;
}

/* ---------- WhatsApp flotante ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 1.6rem;
  right: 1.6rem;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.5);
  z-index: 200;
  transition: transform var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.08);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: #fff;
}

/* ---------- Página Estudio ---------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.value-box {
  text-align: left;
}

.value-box .service-icon {
  margin-bottom: var(--space-sm);
}

.value-box h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.value-box p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.team-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.team-card .card-body {
  text-align: center;
}

.team-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.2rem;
}

.team-card span {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* ---------- Página Servicios ---------- */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.service-detail:last-of-type {
  border-bottom: none;
}

.service-detail.reverse .service-detail-media {
  order: 2;
}

.service-detail-media {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.service-detail-media img {
  border-radius: var(--radius-lg);
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 4;
}

.service-detail-media img:first-child {
  margin-top: 2.5rem;
}

.service-detail-copy .eyebrow.sage {
  color: var(--color-sage);
}

.service-detail-copy .eyebrow.sage::before {
  background: var(--color-sage);
}

.service-detail-copy h2 {
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  margin-bottom: var(--space-sm);
}

.service-detail-copy p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.service-detail-list {
  margin: var(--space-sm) 0 var(--space-md);
}

.service-detail-list li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--color-text-muted);
}

.service-detail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ---------- FAQ acordeón ---------- */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.3rem 0;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--color-carbon);
}

.faq-question .plus {
  font-size: 1.4rem;
  color: var(--color-accent);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-item.open .faq-question .plus {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
}

.faq-answer p {
  padding-bottom: 1.3rem;
  color: var(--color-text-muted);
  max-width: 640px;
}

/* ---------- Página Proyectos ---------- */
.filter-bar {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.filter-btn {
  padding: 0.6rem 1.3rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-carbon);
}

.filter-btn.active {
  background: var(--color-carbon);
  border-color: var(--color-carbon);
  color: #fff;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.project-item {
  display: none;
}

.project-item.visible {
  display: block;
  animation: fadeIn 400ms ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.project-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-sage);
  background: var(--color-sage-soft);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
}

.project-location {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.6rem;
}

.project-photos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.project-photos img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  aspect-ratio: 4 / 3;
}

/* ---------- Página Contacto ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-lg);
}

.contact-info-list li {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-info-list strong {
  display: block;
  font-size: 0.95rem;
}

.contact-info-list span {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-icon svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
}

.contact-quick-actions {
  display: flex;
  gap: 0.8rem;
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

.map-embed {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-top: var(--space-md);
}

.map-embed iframe {
  width: 100%;
  height: 320px;
  border: 0;
  display: block;
}

.contact-form-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .three-up,
  .four-up { grid-template-columns: repeat(2, 1fr); }
  .steps-grid,
  .values-grid,
  .team-grid,
  .trust-grid,
  .testimonial-grid,
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .site-nav {
    position: fixed;
    top: 84px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-md) 1.5rem;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-130%);
    opacity: 0;
    transition: transform var(--transition), opacity var(--transition);
    gap: var(--space-md);
  }

  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .nav-toggle {
    display: flex;
  }

  .split-section,
  .split-section.reverse .split-media,
  .service-detail,
  .service-detail.reverse .service-detail-media,
  .contact-cta-shell {
    grid-template-columns: 1fr;
  }

  .split-section.reverse .split-media,
  .service-detail.reverse .service-detail-media {
    order: 0;
  }
}

@media (max-width: 640px) {
  :root {
    --space-xl: 4.5rem;
    --space-lg: 2.5rem;
  }

  .three-up,
  .four-up,
  .steps-grid,
  .values-grid,
  .team-grid,
  .trust-grid,
  .testimonial-grid,
  .project-grid,
  .footer-grid,
  .form-grid.two-col {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 82vh;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .service-detail-media {
    grid-template-columns: 1fr;
  }

  .service-detail-media img:first-child {
    margin-top: 0;
  }

  .whatsapp-float {
    width: 52px;
    height: 52px;
    bottom: 1.1rem;
    right: 1.1rem;
  }

  .project-photos {
    grid-template-columns: 1fr 1fr;
  }
}