/* ============================================
   MUDANZAS GyG — Industrial Swiss Style
   Catálogo técnico / Ficha industrial
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors - Industrial Swiss Palette */
  --color-paper: #f4f5f7;
  --color-white: #ffffff;
  --color-ink: #14181d;
  --color-ink-light: #2d333b;
  --color-ink-muted: #6b7280;
  --color-accent: #e8542a;
  --color-accent-dark: #c9441f;
  --color-steel: #2b4c7e;
  --color-steel-light: #3d6098;
  --color-border: #d1d5db;
  --color-border-light: #e5e7eb;

  /* Typography */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --container-max: 1200px;
  --header-height: 72px;
  --border-radius: 2px;
  --border-radius-lg: 4px;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 200ms var(--ease-out);
  --transition-base: 350ms var(--ease-out);
  --transition-slow: 600ms var(--ease-out);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-paper);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent);
}

ul, ol {
  list-style: none;
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(244, 245, 247, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  height: var(--header-height);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.logo-code {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-ink-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.02em;
}

/* Desktop Navigation */
.nav-desktop {
  display: block;
}

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

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-ink-light);
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

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

.nav-link:hover::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-ink);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-icon {
  top: 50%;
  transform: translate(-50%, -50%);
}

.menu-icon::before {
  content: '';
  top: -6px;
  left: 0;
  transform: none;
}

.menu-icon::after {
  content: '';
  top: 6px;
  left: 0;
  transform: none;
}

.menu-toggle[aria-expanded="true"] .menu-icon {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Mobile Navigation */
.nav-mobile {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.nav-mobile.is-open {
  display: flex;
}

.nav-mobile-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  width: 100%;
}

.nav-mobile-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-ink-light);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border-light);
  display: block;
}

.nav-mobile-link:hover {
  color: var(--color-accent);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  padding-bottom: var(--space-3xl);
  background: var(--color-paper);
  overflow: hidden;
}

.grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(var(--color-border-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border-light) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.5;
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-3xl);
  align-items: start;
  position: relative;
  z-index: 1;
}

.hero-main {
  padding-top: var(--space-2xl);
}

.hero-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  display: inline-block;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: var(--space-xl);
}

.hero-accent {
  color: var(--color-accent);
  display: block;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-ink-muted);
  max-width: 520px;
  margin-bottom: var(--space-2xl);
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-code {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.6;
  margin-bottom: 2px;
}

.btn-text {
  font-size: 0.9rem;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(232, 84, 42, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.btn-secondary:hover {
  background: var(--color-ink);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
  align-items: center;
  text-align: center;
}

/* Hero Specs Table */
.hero-specs {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  margin-top: var(--space-2xl);
}

.specs-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.specs-code {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.specs-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.specs-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-md);
}

.spec-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  flex-shrink: 0;
}

.spec-value {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-ink);
  text-align: right;
}

/* --- Section Shared Styles --- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-code {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}

.section-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-ink-muted);
}

/* --- Services Section --- */
.services {
  padding: var(--space-4xl) 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.service-card {
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  position: relative;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.service-code {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(232, 84, 42, 0.08);
  border-radius: var(--border-radius);
  display: inline-block;
}

.service-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}

.service-desc {
  font-size: 0.9rem;
  color: var(--color-ink-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.service-features li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-ink-light);
  padding-left: var(--space-md);
  position: relative;
}

.service-features li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* --- Process Section --- */
.process {
  padding: var(--space-4xl) 0;
  background: var(--color-paper);
}

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

.process-step {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl) var(--space-lg);
  position: relative;
  text-align: center;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.process-step:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
}

.step-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.step-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}

.step-desc {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
  line-height: 1.5;
}

.step-arrow {
  position: absolute;
  right: -18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--color-accent);
  font-weight: 700;
  z-index: 1;
}

.process-step:last-child .step-arrow {
  display: none;
}

/* --- Stats Section --- */
.stats {
  padding: var(--space-4xl) 0;
  background: var(--color-ink);
  color: var(--color-white);
}

.stats .section-code {
  color: var(--color-accent);
}

.stats .section-title {
  color: var(--color-white);
}

.stats .section-desc {
  color: rgba(255, 255, 255, 0.6);
}

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

.stat-card {
  text-align: center;
  padding: var(--space-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-lg);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color var(--transition-base), background var(--transition-base);
}

.stat-card:hover {
  border-color: var(--color-accent);
  background: rgba(232, 84, 42, 0.05);
}

.stat-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-unit {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

/* --- Gallery Section --- */
.gallery {
  padding: var(--space-4xl) 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-border-light);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 220px;
  gap: var(--space-md);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item-large {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-item-wide {
  grid-column: span 2;
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  background: linear-gradient(transparent, rgba(20, 24, 29, 0.8));
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-code {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.gallery-caption {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-white);
  font-weight: 500;
}

/* --- Contact Section --- */
.contact {
  padding: var(--space-4xl) 0;
  background: var(--color-paper);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.info-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
}

.info-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.info-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-md);
}

.info-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  flex-shrink: 0;
}

.info-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-ink);
  text-align: right;
}

.info-value a {
  color: var(--color-steel);
  transition: color var(--transition-fast);
}

.info-value a:hover {
  color: var(--color-accent);
}

.map-container {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.map-container iframe {
  display: block;
}

/* Contact Form */
.contact-form {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
}

.form-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.form-code {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.form-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-ink);
}

.form-row {
  margin-bottom: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-ink);
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(232, 84, 42, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* --- Footer --- */
.footer {
  background: var(--color-ink);
  color: var(--color-white);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-code {
  color: rgba(255, 255, 255, 0.4);
}

.footer-brand .logo-text {
  color: var(--color-white);
}

.footer-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: var(--space-md);
  max-width: 300px;
  line-height: 1.6;
}

.footer-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-list li,
.footer-list a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-list a:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.meta-code {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.meta-text {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.3);
}

/* --- WhatsApp Float Button --- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

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

/* --- Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }

/* --- Responsive --- */

/* Tablet */
@media (max-width: 980px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .hero-specs {
    margin-top: 0;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .process-flow {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  .step-arrow {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 200px;
  }

  .gallery-item-large {
    grid-column: span 2;
    grid-row: span 1;
  }

  .gallery-item-wide {
    grid-column: span 2;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

  .footer-brand {
    grid-column: span 2;
  }
}

/* Mobile */
@media (max-width: 760px) {
  :root {
    --header-height: 64px;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .nav-desktop {
    display: none;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + var(--space-xl));
    padding-bottom: var(--space-2xl);
  }

  .hero-title {
    font-size: clamp(2.2rem, 10vw, 3.5rem);
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
    align-items: center;
  }

  .services {
    padding: var(--space-2xl) 0;
  }

  .process {
    padding: var(--space-2xl) 0;
  }

  .process-flow {
    grid-template-columns: 1fr;
  }

  .stats {
    padding: var(--space-2xl) 0;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .stat-value {
    font-size: 2.2rem;
  }

  .gallery {
    padding: var(--space-2xl) 0;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 200px;
  }

  .gallery-item-large,
  .gallery-item-wide {
    grid-column: span 1;
  }

  .contact {
    padding: var(--space-2xl) 0;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer-brand {
    grid-column: span 1;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .whatsapp-float {
    bottom: 16px;
    right: 16px;
    width: 50px;
    height: 50px;
  }

  .whatsapp-float svg {
    width: 24px;
    height: 24px;
  }
}

/* Small Mobile */
@media (max-width: 420px) {
  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .spec-item {
    flex-direction: column;
    gap: 2px;
  }

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

  .info-item {
    flex-direction: column;
    gap: 2px;
  }

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