/**
 * Design System - Exact Change
 * Sistema de variables CSS, tipografía y componentes reutilizables
 * Mejoras UX/UI implementadas
 */

/* ==========================================================================
   CSS Custom Properties (Variables)
   ========================================================================== */

:root {
  /* Colors - Primary */
  --color-primary: #0ab596;
  --color-primary-dark: #009486;
  --color-primary-light: #c7eee7;

  /* Colors - Secondary */
  --color-secondary: #2c3e52;
  --color-secondary-dark: #1a252f;

  /* Colors - Neutral */
  --color-white: #ffffff;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #f2f2f2;
  --color-gray-300: #e1e7ec;
  --color-gray-400: #dbe2e8;
  --color-gray-500: #838383;
  --color-gray-600: #666666;
  --color-gray-700: #606975;
  --color-gray-800: #222222;
  --color-black: #000000;

  /* Colors - Semantic */
  --color-success: #0ab596;
  --color-error: #f54a69;
  --color-warning: #ffc107;
  --color-info: #17a2b8;

  /* Typography - Font Families */
  --font-primary: 'Lato', Helvetica, Arial, sans-serif;
  --font-secondary: 'Montserrat', sans-serif;

  /* Typography - Font Sizes (using rem for accessibility) */
  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-md: 1.125rem;    /* 18px */
  --font-size-lg: 1.25rem;     /* 20px */
  --font-size-xl: 1.5rem;      /* 24px */
  --font-size-2xl: 1.9375rem;  /* 31px */
  --font-size-3xl: 2.1875rem;  /* 35px */
  --font-size-4xl: 2.5625rem;  /* 41px */
  --font-size-5xl: 3.3125rem;  /* 53px */

  /* Typography - Font Weights */
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Typography - Line Heights */
  --line-height-tight: 1.1;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Spacing */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 50px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-tooltip: 1070;
}


/* ==========================================================================
   Accessibility Utilities
   ========================================================================== */

/* Screen reader only - visually hidden but accessible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus visible styles for keyboard navigation */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/* ==========================================================================
   Typography Classes
   ========================================================================== */

/* Section Titles */
.section-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
}

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

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

.section-title--dark {
  color: var(--color-secondary);
}

/* Section Subtitles */
.section-subtitle {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-snug);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-md);
}

.section-subtitle--muted {
  color: var(--color-gray-500);
  font-weight: var(--font-weight-bold);
}

.section-subtitle--white {
  color: var(--color-white);
  font-weight: var(--font-weight-light);
  font-size: var(--font-size-xl);
}

.section-subtitle--light {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-light);
  margin-bottom: var(--spacing-lg);
}

/* Section Descriptions */
.section-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-normal);
  margin-bottom: var(--spacing-lg);
}

.section-description--spaced {
  margin-left: var(--spacing-lg);
  margin-right: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

/* Section Intro (larger text) */
.section-intro {
  font-size: 1.875rem; /* 30px */
  font-weight: var(--font-weight-light);
  line-height: var(--line-height-snug);
}

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

/* Text utilities */
.text-lg {
  font-size: var(--font-size-xl);
}

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

.section-cta-text {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}


/* ==========================================================================
   Spacing Utilities (replacing .space* divs)
   ========================================================================== */

.section-spacing-top {
  padding-top: var(--spacing-3xl);
}

.section-spacing-bottom {
  padding-bottom: var(--spacing-3xl);
}

.section-spacing-sm {
  height: var(--spacing-lg);
}

.section-spacing-lg {
  height: var(--spacing-3xl);
}


/* ==========================================================================
   Background Utilities
   ========================================================================== */

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

.bg-gray {
  background-color: var(--color-gray-200);
}


/* ==========================================================================
   Button Components (CTA)
   ========================================================================== */

.btn-cta {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-xl);
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  min-height: 44px; /* Accessibility: minimum touch target */
  line-height: 1.5;
}

.btn-cta--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border: 2px solid var(--color-primary);
}

.btn-cta--primary:hover,
.btn-cta--primary:focus {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-cta--outline:hover,
.btn-cta--outline:focus {
  background-color: var(--color-primary);
  color: var(--color-white);
}


/* ==========================================================================
   Section Components
   ========================================================================== */

/* Steps Section */
.section-steps {
  margin-top: var(--spacing-3xl);
}

/* Comparison Section */
.section-comparison {
  background-color: var(--color-primary);
}

/* Benefits Section */
.section-benefits__container {
  padding-top: var(--spacing-xl);
}

.benefits-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.benefit-item {
  padding: var(--spacing-md);
}

.benefit-icon {
  margin-bottom: var(--spacing-sm);
}

.benefit-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  margin-top: var(--spacing-xs);
}

/* Discover Section */
.section-discover {
  padding-top: 0;
  padding-bottom: var(--spacing-3xl);
}

/* Offices Section */
.section-offices {
  background-position: 0% 78%;
}

.section-offices__container {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
}

.section-offices__content {
  padding: 5%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* App Section */
.section-app {
  margin-bottom: var(--spacing-xl);
}

.app-stores {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.app-store-link {
  display: inline-block;
  transition: transform var(--transition-fast);
}

.app-store-link:hover {
  transform: scale(1.05);
}


/* ==========================================================================
   Table Components - Mobile Responsive
   ========================================================================== */

.table-responsive-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-comparison {
  width: 100%;
  border-collapse: collapse;
}

.table-comparison thead th {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  padding: var(--spacing-md);
  border-bottom: 2px solid rgba(255, 255, 255, 0.3);
}

.table-comparison .feature-col {
  width: 60%;
  text-align: left;
}

.table-comparison .option-col {
  width: 20%;
}

.table-comparison tbody td {
  padding: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  vertical-align: middle;
}

/* Icon styles for comparison table */
.icon-check-yes {
  color: var(--color-white);
}

.icon-check-no {
  color: var(--color-error);
}

/* Mobile responsive table - card layout */
@media screen and (max-width: 600px) {
  .table-comparison thead {
    display: none;
  }

  .table-comparison tbody tr {
    display: block;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
  }

  .table-comparison tbody td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    text-align: left;
  }

  .table-comparison tbody td:last-child {
    border-bottom: none;
  }

  .table-comparison tbody td::before {
    content: attr(data-label);
    font-weight: var(--font-weight-bold);
    margin-right: var(--spacing-md);
    flex: 1;
  }

  .table-comparison tbody td:first-child {
    font-weight: var(--font-weight-bold);
    background: rgba(255, 255, 255, 0.15);
    margin: calc(var(--spacing-md) * -1);
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }

  .table-comparison tbody td:first-child::before {
    display: none;
  }

  /* Hide first column label on mobile, show content directly */
  .table-comparison tbody td[data-label="Compra"],
  .table-comparison tbody td[data-label="Reserva"] {
    justify-content: flex-start;
    gap: var(--spacing-sm);
  }
}


/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Tablet */
@media screen and (max-width: 991px) {
  .section-title {
    font-size: var(--font-size-xl);
  }

  .section-subtitle {
    font-size: var(--font-size-md);
  }

  .section-description {
    font-size: var(--font-size-base);
  }

  .section-intro {
    font-size: var(--font-size-xl);
  }

  .section-description--spaced {
    margin-left: var(--spacing-md);
    margin-right: var(--spacing-md);
  }
}

/* Mobile */
@media screen and (max-width: 767px) {
  :root {
    --spacing-3xl: 2.5rem;
  }

  .section-title {
    font-size: var(--font-size-lg);
  }

  .section-offices__content {
    padding: var(--spacing-lg);
  }

  .btn-cta {
    width: 100%;
    padding: var(--spacing-md);
  }
}


/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  .section-comparison {
    background: none !important;
    color: var(--color-black) !important;
  }

  .table-comparison,
  .table-comparison th,
  .table-comparison td {
    color: var(--color-black) !important;
    border: 1px solid var(--color-gray-400) !important;
  }

  .icon-check-yes::after {
    content: "Sí";
  }

  .icon-check-no::after {
    content: "No";
  }

  .icon-check-yes i,
  .icon-check-no i {
    display: none;
  }
}