/* ==========================================================================
   STFGLOBAL - INGENIERÍA EN CELULARES
   Design System & Master Stylesheet
   Inspired by Apple, Linear & Stripe Design Language
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS & VARIABLES (Base 8px Grid System & Dark Mode Ready)
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette - Corporate & Engineering Trust */
  --primary: #1565C0;
  --primary-hover: #0D47A1;
  --primary-light: #E3F2FD;
  --primary-glow: rgba(21, 101, 192, 0.15);
  --secondary: #0D47A1;
  
  --bg-primary: #FFFFFF;
  --bg-secondary: #F7F8FA;
  --bg-tertiary: #EEF2F6;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-card: rgba(255, 255, 255, 0.9);

  --text-main: #1A1D20;
  --text-muted: #5A626A;
  --text-light: #88929A;
  --text-inverse: #FFFFFF;

  --border-subtle: #E6E8EC;
  --border-strong: #D1D5DB;
  --border-focus: #1565C0;

  /* Status & Accent Colors */
  --accent-green: #10B981;
  --accent-green-bg: #ECFDF5;
  --star-yellow: #F59E0B;

  /* Typography System */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;

  /* 8px Base Spatial Tokens */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;

  /* Grid & Layout System */
  --container-max: 1200px;
  --grid-gap: 24px;

  /* Component Properties */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  /* Figma Elevation & Soft Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 32px rgba(21, 101, 192, 0.08);
  --shadow-floating: 0 16px 40px rgba(0, 0, 0, 0.12);

  /* Transitions & Motion */
  --ease-apple: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.35s;
}

/* Dark Mode Token Overrides (Future-Ready & Accessible) */
@media (prefers-color-scheme: dark) {
  body.auto-dark-mode {
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;
    --bg-glass: rgba(15, 23, 42, 0.85);
    --bg-glass-card: rgba(30, 41, 59, 0.9);
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --text-light: #64748B;
    --border-subtle: #334155;
    --border-strong: #475569;
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.4);
  }
}

/* Force dark class if toggled */
body.dark-theme {
  --bg-primary: #0B1120;
  --bg-secondary: #162032;
  --bg-tertiary: #233148;
  --bg-glass: rgba(11, 17, 32, 0.88);
  --bg-glass-card: rgba(22, 32, 50, 0.92);
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-light: #64748B;
  --border-subtle: #233148;
  --border-strong: #334155;
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

/* --------------------------------------------------------------------------
   2. RESET & ACCESSIBILITY BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--duration-normal) var(--ease-apple), color var(--duration-normal) var(--ease-apple);
}

/* Accessibility Focus States (WCAG AA) */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Images & Media Optimization */
img, picture, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

/* --------------------------------------------------------------------------
   3. FIGMA 12-COLUMN GRID SYSTEM & LAYOUT
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gap);
}

/* Column Utilities */
.col-12 { grid-column: span 12; }
.col-10 { grid-column: span 10; }
.col-8  { grid-column: span 8; }
.col-7  { grid-column: span 7; }
.col-6  { grid-column: span 6; }
.col-5  { grid-column: span 5; }
.col-4  { grid-column: span 4; }
.col-3  { grid-column: span 3; }

/* Responsive Grid Adjustments */
@media (max-width: 1024px) {
  .col-10, .col-8, .col-7, .col-6 { grid-column: span 12; }
  .col-5, .col-4 { grid-column: span 6; }
  .col-3 { grid-column: span 6; }
}

@media (max-width: 640px) {
  .col-5, .col-4, .col-3 { grid-column: span 12; }
  .container {
    padding-left: var(--space-2);
    padding-right: var(--space-2);
  }
}

/* Section Spacing System */
.section {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
  position: relative;
}

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

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-8) auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background-color: var(--primary-light);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-2);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: var(--space-2);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* --------------------------------------------------------------------------
   4. BUTTONS & UI COMPONENTS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 14px 24px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-apple);
  white-space: nowrap;
  user-select: none;
  text-align: center;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--bg-primary);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: var(--primary-light);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background-color: #25D366;
  color: #FFFFFF;
  font-weight: 600;
}

.btn-whatsapp:hover {
  background-color: #1EBE5B;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.3);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  background-color: var(--bg-secondary);
  color: var(--text-main);
  transition: all var(--duration-fast) var(--ease-apple);
}

.btn-icon:hover {
  background-color: var(--primary-light);
  color: var(--primary);
}

/* Cards Base (12px Radius & Soft Shadows) */
.card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-md);
  transition: all var(--duration-normal) var(--ease-apple);
}

.card-hover:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(21, 101, 192, 0.2);
}

/* --------------------------------------------------------------------------
   5. HEADER & NAVIGATION BAR (Glassmorphism & Fixed)
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.6);
  transition: all var(--duration-fast) var(--ease-apple);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--border-subtle);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--text-main);
}

.brand-logo svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
}

.brand-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--duration-fast) var(--ease-apple);
  padding: var(--space-1) 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--duration-fast) var(--ease-apple);
  border-radius: var(--radius-pill);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-main);
  padding: var(--space-1);
}

/* --------------------------------------------------------------------------
   6. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 140px;
  padding-bottom: var(--space-10);
  background: radial-gradient(circle at 80% 20%, var(--primary-light) 0%, transparent 40%);
  overflow: hidden;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 6px 14px;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-3);
  width: fit-content;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--primary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(21, 101, 192, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(21, 101, 192, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(21, 101, 192, 0); }
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--text-main);
  margin-bottom: var(--space-3);
}

.hero-title span {
  color: var(--primary);
}

.hero-subtitle {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  max-width: 540px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.hero-trust-metrics {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}

.metric-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-floating);
  border: 1px solid var(--border-subtle);
}

.hero-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-apple);
}

.hero-image-wrapper:hover img {
  transform: scale(1.03);
}

.hero-floating-card {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hero-floating-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  background-color: var(--accent-green-bg);
  color: var(--accent-green);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   7. SERVICES SECTION
   -------------------------------------------------------------------------- */
.service-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  transition: all var(--duration-normal) var(--ease-apple);
  position: relative;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.service-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
  transition: all var(--duration-fast) var(--ease-apple);
}

.service-card:hover .service-icon-box {
  background-color: var(--primary);
  color: var(--text-inverse);
  transform: scale(1.08);
}

.service-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: var(--space-1);
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--duration-fast) var(--ease-apple);
}

.service-card:hover .service-link {
  gap: 12px;
}

/* --------------------------------------------------------------------------
   8. WHY CHOOSE US SECTION
   -------------------------------------------------------------------------- */
.feature-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-apple);
}

.feature-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-check {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: var(--radius-pill);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   9. HOW WE WORK (PROCESS)
   -------------------------------------------------------------------------- */
.process-grid {
  position: relative;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-3);
  position: relative;
}

.process-number {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-pill);
  background-color: var(--bg-primary);
  border: 2px solid var(--primary);
  color: var(--primary);
  font-weight: 800;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-fast) var(--ease-apple);
}

.process-step:hover .process-number {
  background-color: var(--primary);
  color: var(--text-inverse);
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.process-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-1);
}

.process-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   10. TESTIMONIALS & REVIEWS
   -------------------------------------------------------------------------- */
.review-slider-container {
  overflow: hidden;
  position: relative;
  padding: var(--space-2) 0;
}

.review-track {
  display: flex;
  gap: var(--space-3);
  transition: transform 0.5s var(--ease-apple);
}

.review-card {
  min-width: calc(33.333% - 16px);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

@media (max-width: 1024px) {
  .review-card { min-width: calc(50% - 12px); }
}

@media (max-width: 640px) {
  .review-card { min-width: 100%; }
}

.review-stars {
  display: flex;
  gap: 4px;
  color: var(--star-yellow);
  margin-bottom: var(--space-2);
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: var(--space-3);
}

.review-author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.author-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.author-info span {
  font-size: 0.8rem;
  color: var(--accent-green);
  font-weight: 600;
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

/* --------------------------------------------------------------------------
   11. FAQ ACCORDION (Minimalist Accessibility Compliant)
   -------------------------------------------------------------------------- */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  background-color: var(--bg-primary);
  overflow: hidden;
  transition: all var(--duration-fast) var(--ease-apple);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.faq-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  background: none;
}

.faq-header:hover {
  color: var(--primary);
}

.faq-icon {
  width: 24px;
  height: 24px;
  transition: transform var(--duration-normal) var(--ease-apple);
  color: var(--primary);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease-apple), padding var(--duration-normal) var(--ease-apple);
  padding: 0 var(--space-4);
}

.faq-item.active .faq-body {
  max-height: 300px;
  padding: 0 var(--space-4) var(--space-4) var(--space-4);
}

.faq-content {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   12. CONTACT & LOCATION SECTION
   -------------------------------------------------------------------------- */
.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
}

.quote-box {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--space-3);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  font-size: 0.95rem;
  transition: all var(--duration-fast) var(--ease-apple);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  background-color: var(--bg-primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

/* --------------------------------------------------------------------------
   13. FOOTER
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-10);
  padding-bottom: var(--space-6);
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: var(--space-2);
}

.footer-links-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer-links-list a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--duration-fast) var(--ease-apple);
}

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

.social-links {
  display: flex;
  gap: var(--space-2);
}

.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-light);
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* --------------------------------------------------------------------------
   14. FLOATING WHATSAPP BUTTON (Always Visible CRO)
   -------------------------------------------------------------------------- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: #25D366;
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.4);
  font-weight: 700;
  font-size: 0.95rem;
  transition: all var(--duration-fast) var(--ease-apple);
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 14px 40px rgba(37, 211, 102, 0.5);
  background-color: #1EBE5B;
  color: #FFFFFF;
}

.whatsapp-float-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background-color: #FF3B30;
  color: #FFFFFF;
  font-size: 0.7rem;
  font-weight: 800;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #FFFFFF;
}

/* --------------------------------------------------------------------------
   15. ANIMATIONS & RESPONSIVE UTILITIES
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-apple), transform 0.8s var(--ease-apple);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .nav-menu {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: var(--space-4);
    gap: var(--space-3);
    transform: translateY(-150%);
    transition: transform var(--duration-normal) var(--ease-apple);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .mobile-toggle {
    display: block;
  }

  .hero-title {
    font-size: 2.25rem;
  }
}