/* ====================================================================
   ESTRUCTURA & OBRA — HARMONIOUS & MINIMALIST CONSTRUCTION SYSTEM
   Inspired by Suffolk, Webcor, Amenabar & Swiss Architectural Design
   ==================================================================== */

:root {
  /* Paleta Premium: Hormigón Visto & Granito Negro Pulido */
  --c-bg: #D5D7DB;              /* Hormigón pulido / Fair-faced concrete */
  --c-surface: #E2E4E8;         /* Granito gris claro pulido */
  --c-surface-subtle: #C8CCD2;  /* Hormigón encofrado con textura de madera */
  --c-surface-card: #ECEEF1;
  
  --c-dark: #0C0D0F;            /* Granito negro absoluto / Nero Zimbabwe */
  --c-dark-soft: #181B20;       /* Basalto cortado */
  --c-dark-muted: #2C3038;      /* Pizarra negra natural */
  
  --c-accent: #A68B6B;          /* Latón envejecido / Bronce patinado */
  --c-accent-hover: #8E7558;
  --c-whatsapp: #25D366;
  --c-whatsapp-dark: #1EBE5D;
  
  --c-border: rgba(12, 13, 15, 0.14);
  --c-border-light: rgba(12, 13, 15, 0.07);
  --c-border-strong: rgba(12, 13, 15, 0.25);
  
  --c-text: #0C0D0F;
  --c-text-muted: #484D58;
  --c-text-light: #6B7182;
  
  /* Tipografía */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'Space Mono', SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  /* Espaciado y Radios */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  /* Contenedores */
  --container-max: 1280px;
  --touch-min: 48px;
}

/* 1. RESET Y BASE */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  overflow-x: hidden;
  padding-bottom: calc(76px + env(safe-area-inset-bottom));
}

@media (min-width: 992px) {
  body {
    padding-bottom: 0;
  }
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

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

button, input, select {
  font-family: inherit;
  font-size: 1rem;
  border: none;
  outline: none;
  background: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 2. HEADER Y NAVEGACIÓN */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(213, 215, 219, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  transition: transform 0.25s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 32px;
  height: 32px;
  background-color: var(--c-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.05em;
  border-radius: 2px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-dark);
}

.brand-subtext {
  display: block;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  color: var(--c-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 32px;
}

@media (min-width: 992px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-text-muted);
  transition: color 0.15s ease;
  letter-spacing: 0.02em;
}

.nav-link:hover {
  color: var(--c-dark);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-contact-quick {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 18px;
  background-color: var(--c-dark);
  color: #FFFFFF;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease;
}

.btn-contact-quick:hover {
  background-color: var(--c-dark-soft);
}

.btn-mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  color: var(--c-dark);
}

@media (min-width: 992px) {
  .btn-mobile-toggle {
    display: none;
  }
}

/* 3. HERO SECTION (MONOLITHIC POWER) */
.hero-section {
  padding: 56px 0 64px;
  border-bottom: 1px solid var(--c-border);
  background: linear-gradient(180deg, #D5D7DB 0%, #C8CCD2 100%);
}

@media (min-width: 992px) {
  .hero-section {
    padding: 88px 0 96px;
  }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 64px;
  }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero-tag-dot {
  width: 8px;
  height: 8px;
  background-color: var(--c-accent);
  border-radius: 50%;
}

.hero-title {
  font-size: clamp(2.1rem, 4.2vw, 3.8rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--c-dark);
  margin-bottom: 24px;
}

.hero-desc {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  color: var(--c-text-muted);
  line-height: 1.65;
  margin-bottom: 36px;
  max-width: 600px;
}

.hero-ctas {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 48px;
}

@media (min-width: 540px) {
  .hero-ctas {
    flex-direction: row;
    align-items: center;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: var(--touch-min);
  padding: 0 24px;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background-color: var(--c-dark);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--c-accent);
}

.btn-outline {
  border: 1px solid var(--c-border-strong);
  color: var(--c-dark);
  background-color: var(--c-surface);
}

.btn-outline:hover {
  border-color: var(--c-dark);
}

.hero-image-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 12px 36px -8px rgba(21, 22, 25, 0.15);
  border: 1px solid var(--c-border);
}

.hero-image-card img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

@media (min-width: 992px) {
  .hero-image-card img {
    height: 480px;
  }
}

.hero-image-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  background: rgba(21, 22, 25, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #FFFFFF;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.badge-text-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.badge-text-sub {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: #A4A7B4;
}

/* 4. TRUST METRICS TICKER */
.metrics-section {
  padding: 36px 0;
  background-color: #C2C6CC;
  border-bottom: 1px solid var(--c-border);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (min-width: 768px) {
  .metrics-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
  }
}

.metric-item {
  border-left: 2px solid var(--c-dark);
  padding-left: 14px;
}

.metric-val {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  color: var(--c-dark);
  line-height: 1.1;
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.metric-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--c-dark);
  letter-spacing: 0.02em;
}

.metric-sub {
  font-size: 0.72rem;
  color: var(--c-text-light);
  line-height: 1.35;
}

/* 5. PORTFOLIO DE PROYECTOS (AMENABAR & WEBCOR STYLE) */
.section {
  padding: 64px 0;
}

@media (min-width: 992px) {
  .section {
    padding: 96px 0;
  }
}

.section-header {
  margin-bottom: 40px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.75rem);
  font-weight: 800;
  color: var(--c-dark);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.filter-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: 32px;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  white-space: nowrap;
  min-height: 40px;
  padding: 0 16px;
  font-size: 0.84rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid var(--c-border);
  background-color: var(--c-surface);
  color: var(--c-text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn.active, .filter-btn:hover {
  background-color: var(--c-dark);
  color: #FFFFFF;
  border-color: var(--c-dark);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  background-color: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px -8px rgba(21, 22, 25, 0.12);
}

.project-image-wrap {
  position: relative;
  height: 240px;
  background-color: var(--c-surface-subtle);
  overflow: hidden;
}

.project-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.project-card:hover .project-image-wrap img {
  transform: scale(1.03);
}

.project-category-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(21, 22, 25, 0.85);
  backdrop-filter: blur(6px);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--c-dark);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.project-loc {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  margin-bottom: 16px;
}

.project-specs-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  padding: 12px 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.spec-cell-label {
  color: var(--c-text-light);
  display: block;
}

.spec-cell-val {
  font-weight: 700;
  color: var(--c-dark);
}

.project-challenge {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  line-height: 1.5;
  margin-top: auto;
}

/* 6. CAPACIDADES TÉCNICAS (SUFFOLK STYLE) */
.capabilities-section {
  background-color: var(--c-dark);
  color: #FFFFFF;
  padding: 80px 0;
}

.capabilities-section .section-title {
  color: #FFFFFF;
}

.capabilities-section .section-eyebrow {
  color: var(--c-accent);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 40px;
}

@media (min-width: 768px) {
  .capabilities-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.cap-card {
  background-color: var(--c-dark-soft);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 32px 28px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
}

.cap-num {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-accent);
  margin-bottom: 16px;
}

.cap-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.cap-desc {
  font-size: 0.88rem;
  color: #A3A7B5;
  line-height: 1.6;
  margin-bottom: 20px;
}

.cap-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.cap-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 3px 8px;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  color: #D2D5E0;
}

/* 7. GARANTÍAS Y RIGOR CONTRACTUAL (TRUST SECTION) */
.guarantees-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 36px;
}

@media (min-width: 768px) {
  .guarantees-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.guarantee-card {
  background: #F8F9FA;
  border: 1px solid var(--c-border);
  padding: 28px 24px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--c-dark);
}

.guarantee-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--c-dark);
  margin-bottom: 10px;
}

.guarantee-desc {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.55;
}

/* 8. CALCULADOR INSTANTÁNEO DE COSTE (FAST SIMULATOR) */
.calc-section {
  background-color: var(--c-surface-subtle);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.calc-box {
  background: #F8F9FA;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-top: 32px;
  box-shadow: 0 8px 24px -4px rgba(21, 22, 25, 0.05);
}

@media (min-width: 992px) {
  .calc-box {
    padding: 40px;
  }
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 992px) {
  .calc-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
  }
}

.calc-group-title {
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--c-dark);
  margin-bottom: 12px;
}

.calc-types-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

@media (min-width: 600px) {
  .calc-types-row {
    flex-direction: row;
  }
}

.calc-type-btn {
  flex: 1;
  padding: 14px 16px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background-color: var(--c-surface);
  color: var(--c-text);
  font-size: 0.85rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
}

.calc-type-btn.active {
  border-color: var(--c-dark);
  background-color: var(--c-dark);
  color: #FFFFFF;
}

.calc-slider-wrap {
  margin-bottom: 28px;
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.slider-val-display {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--c-accent);
}

.calc-range {
  width: 100%;
  height: 6px;
  background: var(--c-surface-subtle);
  border-radius: 3px;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.calc-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--c-dark);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  border: 2px solid #FFFFFF;
}

.tiers-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.tier-btn {
  padding: 12px 10px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background-color: var(--c-surface);
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tier-btn.active {
  background-color: var(--c-dark-soft);
  border-color: var(--c-dark-soft);
  color: #FFFFFF;
}

.calc-result-card {
  background-color: var(--c-dark);
  color: #FFFFFF;
  padding: 32px 28px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #A3A7B5;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.result-price-main {
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 2.8vw, 2.4rem);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.15;
  margin-bottom: 6px;
}

.result-disclaimer {
  font-size: 0.74rem;
  color: #8C90A0;
  margin-bottom: 24px;
}

.result-breakdown-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

.btn-whatsapp-quote {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  background-color: var(--c-whatsapp);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  margin-top: 24px;
  transition: background-color 0.15s ease;
}

.btn-whatsapp-quote:hover {
  background-color: var(--c-whatsapp-dark);
}

/* 9. CONTACTO Y FOOTER */
.site-footer {
  background-color: var(--c-dark);
  color: #FFFFFF;
  padding: 64px 0 32px;
  border-top: 1px solid var(--c-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

.footer-brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 0.86rem;
  color: #9A9EA8;
  line-height: 1.6;
  max-width: 360px;
}

.footer-col-title {
  font-size: 0.84rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  margin-bottom: 14px;
}

.footer-link-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.86rem;
  color: #C0C3CC;
}

.footer-link-list a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.74rem;
  font-family: var(--font-mono);
  color: #747884;
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: space-between;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* 10. STICKY MOBILE CONVERSION BAR */
.sticky-conversion-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(21, 22, 25, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  display: flex;
  gap: 10px;
}

@media (min-width: 992px) {
  .sticky-conversion-bar {
    display: none;
  }
}

.sticky-bar-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.sticky-btn-call {
  background-color: var(--c-dark-soft);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.sticky-btn-wa {
  background-color: var(--c-whatsapp);
  color: #FFFFFF;
}

/* ====================================================================
   11. FULLSCREEN HERO WITH BACKGROUND IMAGE
   ==================================================================== */
.hero-fullscreen {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-bottom: none;
  background: none;
  overflow: hidden;
}

.hero-bg-image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 40%;
  background-repeat: no-repeat;
  will-change: transform;
}

.hero-bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  will-change: transform;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(12, 13, 15, 0.55) 0%,
    rgba(12, 13, 15, 0.72) 50%,
    rgba(12, 13, 15, 0.88) 100%
  );
}

.hero-content-centered {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 140px 20px 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-fullscreen .hero-tag {
  color: var(--c-accent);
  margin-bottom: 24px;
}

.hero-title-big {
  font-size: clamp(2.6rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: #FFFFFF;
  margin-bottom: 24px;
  max-width: 900px;
}

.hero-desc-big {
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.65;
  margin-bottom: 40px;
  max-width: 640px;
}

.hero-fullscreen .hero-ctas {
  margin-bottom: 0;
  justify-content: center;
}

.btn-lg {
  min-height: 56px;
  padding: 0 32px;
  font-size: 1rem;
}

.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #FFFFFF;
  background: transparent;
}

.btn-outline-light:hover {
  border-color: #FFFFFF;
  background: rgba(255, 255, 255, 0.08);
}

/* Scroll Indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hero-scroll-indicator span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--c-accent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0% { top: -100%; }
  50% { top: 0%; }
  100% { top: 100%; }
}

/* Header scroll effect */
.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

/* ====================================================================
   12. SCROLL REVEAL ANIMATIONS
   ==================================================================== */
.reveal-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-up.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-up.delay-1 { transition-delay: 0.12s; }
.reveal-up.delay-2 { transition-delay: 0.24s; }
.reveal-up.delay-3 { transition-delay: 0.36s; }

.reveal-section {
  opacity: 0;
  transition: opacity 0.8s ease;
}

.reveal-section.revealed {
  opacity: 1;
}

/* ====================================================================
   13. BEFORE / AFTER INTERACTIVE SLIDER
   ==================================================================== */
.before-after-section {
  padding: 80px 0;
  background-color: var(--c-dark);
}

.before-after-section .section-eyebrow {
  color: var(--c-accent);
}

.before-after-section .section-title {
  color: #FFFFFF;
}

.ba-slider-wrap {
  max-width: 960px;
  margin: 0 auto;
}

.ba-slider {
  --ba-pos: 50%;
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius-lg);
  cursor: col-resize;
  user-select: none;
  -webkit-user-select: none;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.ba-image {
  position: absolute;
  inset: 0;
}

.ba-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ba-before {
  clip-path: inset(0 calc(100% - var(--ba-pos)) 0 0);
}

.ba-after {
  z-index: 1;
  clip-path: inset(0 0 0 var(--ba-pos));
}

.ba-handle {
  position: absolute;
  left: var(--ba-pos);
  top: 0;
  bottom: 0;
  z-index: 10;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 3px;
  pointer-events: auto;
}

.ba-handle-line {
  flex: 1;
  width: 2px;
  background: #FFFFFF;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.4);
}

.ba-handle-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
  cursor: col-resize;
  color: var(--c-dark);
  flex-shrink: 0;
}

.ba-label {
  position: absolute;
  bottom: 16px;
  z-index: 5;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #FFFFFF;
  background: rgba(12, 13, 15, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
}

.ba-label-before { left: 16px; }
.ba-label-after { right: 16px; }

/* ====================================================================
   14. PROCESS CONSTRUCTION STRIP
   ==================================================================== */
.process-section {
  padding: 80px 0 0;
  overflow: hidden;
}

.process-strip {
  display: flex;
  gap: 4px;
  margin-top: 48px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-snap-type: x mandatory;
  padding-bottom: 2px;
}

.process-strip::-webkit-scrollbar {
  display: none;
}

.process-item {
  position: relative;
  flex: 0 0 280px;
  height: 380px;
  overflow: hidden;
  scroll-snap-align: start;
}

@media (min-width: 992px) {
  .process-item {
    flex: 1;
    height: 420px;
  }
}

.process-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.process-item:hover img {
  transform: scale(1.06);
}

.process-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(12, 13, 15, 0.85) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px 20px;
  transition: background 0.3s ease;
}

.process-item:hover .process-item-overlay {
  background: linear-gradient(180deg, transparent 20%, rgba(12, 13, 15, 0.9) 100%);
}

.process-step-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  margin-bottom: 6px;
}

.process-step-name {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.02em;
}