/* ==========================================================================
   FWEB - MAIN.CSS - DARK THEME
   Código optimizado, sin Google Fonts, PageSpeed 90+
   ========================================================================== */

/* ==========================================================================
   1. CSS RESET
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
   scroll-behavior: auto;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

/* ==========================================================================
   2. CSS VARIABLES - DARK THEME
   ========================================================================== */

:root {
  /* Colores Principales */
  --color-primary: #FFFFFF;
  --color-secondary: #f36907f1;
  --color-accent: #fb6006;

  /* Grises - Oscuros */
  --color-gray-50: #18181B;
  --color-gray-100: #27272A;
  --color-gray-200: #3F3F46;
  --color-gray-300: #52525B;
  --color-gray-400: #71717A;
  --color-gray-500: #A1A1AA;
  --color-gray-600: #D4D4D8;
  --color-gray-700: #E4E4E7;
  --color-gray-800: #F4F4F5;
  --color-gray-900: #FAFAFA;

  /* Colores de Estado */
  --color-success: #10B981;
  --color-success-light: #064E3B;
  --color-error: #f36907f1;
  --color-error-light: #431407;
  --color-warning: #F59E0B;
  --color-info: #3B82F6;

  /* Backgrounds - TEMA OSCURO */
  --color-bg-primary: #0A0A0A;
  --color-bg-secondary: #18181B;
  --color-bg-dark: #000000;

  /* Text Colors - TEMA OSCURO */
  --color-text-primary: #F4F4F5;
  --color-text-secondary: #A1A1AA;
  --color-text-inverse: #0A0A0A;

  /* Tipografía - SYSTEM FONTS */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Courier New', monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* Spacing */
  --spacing-0: 0;
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows - DARK THEME */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(243, 105, 7, 0.3);

  /* Transitions - SOLO transform y opacity */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* ==========================================================================
   3. BASE STYLES - DARK THEME
   ========================================================================== */

body {
  font-family: var(--font-primary);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
}

/* ==========================================================================
   4. LAYOUT UTILITIES
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-6);
  padding-right: var(--spacing-6);
}

.container-narrow {
  max-width: 800px;
}

.container-wide {
  max-width: 1400px;
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

.flex-col {
  flex-direction: column;
}

.flex-row {
  flex-direction: row;
}

.flex-wrap {
  flex-wrap: wrap;
}

.flex-nowrap {
  flex-wrap: nowrap;
}

.items-start {
  align-items: flex-start;
}

.items-center {
  align-items: center;
}

.items-end {
  align-items: flex-end;
}

.items-stretch {
  align-items: stretch;
}

.justify-start {
  justify-content: flex-start;
}

.justify-center {
  justify-content: center;
}

.justify-end {
  justify-content: flex-end;
}

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

.gap-1 {
  gap: var(--spacing-1);
}

.gap-2 {
  gap: var(--spacing-2);
}

.gap-3 {
  gap: var(--spacing-3);
}

.gap-4 {
  gap: var(--spacing-4);
}

.gap-6 {
  gap: var(--spacing-6);
}

.gap-8 {
  gap: var(--spacing-8);
}

/* Grid Utilities */
.grid {
  display: grid;
}

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

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Spacing Utilities */
.py-2 {
  padding-top: var(--spacing-2);
  padding-bottom: var(--spacing-2);
}

.py-4 {
  padding-top: var(--spacing-4);
  padding-bottom: var(--spacing-4);
}

.py-6 {
  padding-top: var(--spacing-6);
  padding-bottom: var(--spacing-6);
}

.py-8 {
  padding-top: var(--spacing-8);
  padding-bottom: var(--spacing-8);
}

.py-12 {
  padding-top: var(--spacing-12);
  padding-bottom: var(--spacing-12);
}

.py-16 {
  padding-top: var(--spacing-16);
  padding-bottom: var(--spacing-16);
}

.py-20 {
  padding-top: var(--spacing-20);
  padding-bottom: var(--spacing-20);
}

.py-24 {
  padding-top: var(--spacing-24);
  padding-bottom: var(--spacing-24);
}

/* Background Utilities */
.bg-primary {
  background-color: var(--color-bg-primary);
}

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

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

/* ==========================================================================
   5. BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-6);
  font-weight: 600;
  font-size: var(--text-sm);
  line-height: 1.5;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: transform var(--transition-normal), opacity var(--transition-normal), box-shadow var(--transition-normal);
}

.btn-primary {
  background-color: var(--color-secondary);
  color: var(--color-text-inverse);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--color-secondary);
  border: 2px solid var(--color-secondary);
}

.btn-outline:hover {
  background-color: var(--color-secondary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

/* ==========================================================================
   6. HEADER - DARK THEME
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-100);
  padding: var(--spacing-4) 0;
  z-index: var(--z-sticky);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  text-decoration: none;
}

.logo-svg {
  width: 40px;
  height: 40px;
}

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--text-sm);
  transition: color var(--transition-normal);
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
  }

  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    flex-direction: column;
    padding: var(--spacing-8) var(--spacing-6);
    gap: var(--spacing-6);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    z-index: 999;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
    border: 1px solid var(--color-gray-100);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    font-size: var(--text-lg);
    padding: var(--spacing-2) 0;
  }

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

  body.menu-open {
    overflow: hidden;
  }
}

/* ==========================================================================
   7. HERO SECTION - DARK THEME
   ========================================================================== */

.hero {
  padding-top: calc(80px + var(--spacing-24));
  padding-bottom: var(--spacing-20);
  background: var(--color-bg-dark);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: repeating-linear-gradient(90deg,
      transparent,
      transparent 50px,
      rgba(243, 105, 7, 0.03) 50px,
      rgba(243, 105, 7, 0.03) 51px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  background: var(--color-error-light);
  color: var(--color-secondary);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-6);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-6xl);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-6);
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
}

.hero h1 .highlight {
  color: var(--color-secondary);
}

.hero-description {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-8);
  line-height: 1.7;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: var(--text-4xl);
  }

  .hero-description {
    font-size: var(--text-lg);
  }
}

/* ==========================================================================
   8. STATS BAR - DARK THEME
   ========================================================================== */

.stats {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  padding: var(--spacing-12) 0;
  border-top: 1px solid var(--color-gray-100);
  border-bottom: 1px solid var(--color-gray-100);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-12);
  text-align: center;
}

.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-2);
  display: block;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ==========================================================================
   9. SECTION HEADERS - DARK THEME
   ========================================================================== */

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-16);
}

.section-badge {
  display: inline-block;
  background: var(--color-error-light);
  color: var(--color-secondary);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-4);
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.section-description {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   10. COMPARISON CARDS - DARK THEME
   ========================================================================== */

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-8);
  margin-top: var(--spacing-12);
}

.comparison-card {
  background: var(--color-bg-primary);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--color-gray-100);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.comparison-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-gray-200);
}

.comparison-card.winner {
  border-color: var(--color-secondary);
  position: relative;
}

.winner-badge {
  position: absolute;
  top: -12px;
  right: var(--spacing-6);
  background: var(--color-secondary);
  color: var(--color-text-inverse);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.comparison-card h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--spacing-6);
  font-weight: 700;
  color: var(--color-text-primary);
}

.comparison-list {
  list-style: none;
}

.comparison-list li {
  padding: var(--spacing-3) 0;
  border-bottom: 1px solid var(--color-gray-100);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  color: var(--color-text-secondary);
}

.comparison-list li:last-child {
  border-bottom: none;
}

.icon-check,
.icon-cross {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-xs);
}

.icon-check {
  background: var(--color-success-light);
  color: var(--color-success);
}

.icon-cross {
  background: var(--color-error-light);
  color: var(--color-error);
}

/* ==========================================================================
   11. SERVICE CARDS - DARK THEME
   ========================================================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-8);
  margin-top: var(--spacing-12);
}

.service-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  padding: var(--spacing-10);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.service-card:hover {
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: var(--color-error-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-3xl);
  margin-bottom: var(--spacing-6);
}

.service-icon i {
  font-size: 2rem;
  color: var(--color-error);
  transition: transform var(--transition-normal);
}

.service-card:hover .service-icon i {
  transform: scale(1.1);
}

.service-card h3 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-2);
  color: var(--color-text-primary);
}

.service-price {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-4);
}

.service-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-6);
  line-height: 1.6;
}

.service-features {
  list-style: none;
  margin-bottom: var(--spacing-8);
}

.service-features li {
  padding: var(--spacing-2) 0;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.service-features li::before {
  content: '✓';
  color: var(--color-secondary);
  font-weight: 700;
  flex-shrink: 0;
}

/* ==========================================================================
   12. PROCESS STEPS - DARK THEME
   ========================================================================== */

.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
  margin-top: var(--spacing-12);
}

.process-step {
  text-align: center;
}

.step-number {
  width: 64px;
  height: 64px;
  background: var(--color-secondary);
  color: var(--color-text-inverse);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-3xl);
  font-weight: 900;
  margin: 0 auto var(--spacing-6);
  font-family: var(--font-display);
}

.process-step h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-3);
  color: var(--color-text-primary);
}

.process-step p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   13. PORTFOLIO CARDS - DARK THEME
   ========================================================================== */

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 1024px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

.portfolio-card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-100);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.portfolio-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-secondary);
}

.portfolio-image {
  width: 100%;
  height: 240px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 4rem;
  position: relative;
}

.portfolio-content {
  padding: var(--spacing-8);
}

.portfolio-card h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-3);
  color: var(--color-text-primary);
}

.portfolio-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-6);
  line-height: 1.6;
}

.portfolio-metrics {
  display: flex;
  gap: var(--spacing-4);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-4);
}

.metric-badge {
  background: var(--color-gray-100);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.portfolio-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: gap var(--transition-normal);
}

.portfolio-link:hover {
  gap: var(--spacing-3);
}

/* ==========================================================================
   14. CONTACT FORM - DARK THEME
   ========================================================================== */

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-6);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--spacing-4);
  border: 2px solid var(--color-gray-100);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-family: inherit;
  transition: outline var(--transition-normal), border-color var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
  border-color: transparent;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-info {
  margin-top: var(--spacing-12);
  text-align: center;
}

.contact-info a {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-normal);
}

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

/* ==========================================================================
   15. FOOTER - DARK THEME
   ========================================================================== */

.footer {
  background: var(--color-bg-dark);
  color: var(--color-text-secondary);
  padding: var(--spacing-16) 0 var(--spacing-8);
  border-top: 1px solid var(--color-gray-100);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-12);
}

.footer-column h4 {
  color: var(--color-text-primary);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-3);
}

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

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

.social-links {
  display: flex;
  gap: var(--spacing-4);
  margin-top: var(--spacing-4);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--color-gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.social-link:hover {
  background: var(--color-secondary);
  color: var(--color-text-inverse);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-100);
  padding-top: var(--spacing-8);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.footer-bottom a {
  color: var(--color-secondary);
  text-decoration: none;
}

/* ==========================================================================
   16. WHATSAPP FLOAT BUTTON
   ========================================================================== */

.whatsapp-float {
  position: fixed;
  bottom: var(--spacing-8);
  right: var(--spacing-8);
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
  text-decoration: none;
  box-shadow: var(--shadow-xl);
  z-index: var(--z-fixed);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 24px rgba(37, 211, 102, 0.4);
}

/* ==========================================================================
   17. RESPONSIVE ADJUSTMENTS
   ========================================================================== */

@media (max-width: 768px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

/* === ICON SYSTEM (SVG Inline) === */

.icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    vertical-align: middle;
    color: currentColor;
    fill: currentColor;
}

.icon-sm {
    width: 20px;
    height: 20px;
}

.icon-lg {
    width: 48px;
    height: 48px;
}

/* Contextos específicos */
.stat-card .icon {
    color: var(--color-secondary);
}

.service-card .icon {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.step-icon .icon {
    color: var(--color-secondary);
}

.comparison-list .icon {
    flex-shrink: 0;
}

.comparison-list .good .icon {
    color: var(--color-secondary);
}

.comparison-list .bad .icon {
    color: var(--color-accent);
}

.contact-item .icon {
    color: var(--color-secondary);
    width: 32px;
    height: 32px;
}

.social-links .icon {
    width: 24px;
    height: 24px;
    transition: transform var(--transition-fast);
}

.social-links a:hover .icon {
    transform: translateY(-2px);
}

.whatsapp-float .icon {
    width: 32px;
    height: 32px;
}

.btn-link .icon {
    transition: transform var(--transition-fast);
}

.btn-link:hover .icon {
    transform: translateX(4px);
}