/*
 * Adlantia Website - Main Stylesheet
 * Design System & Core Styles
 * Version: 1.0.0
 */

/* ==========================================================================
   CSS VARIABLES & DESIGN TOKENS
   ========================================================================== */

:root {
  /* Brand Colors */
  --color-primary: #da291c;
  --color-primary-dark: #b92217;
  --color-primary-light: #e85449;
  --color-secondary: #051c2c;
  --color-secondary-dark: #030f19;
  --color-secondary-light: #0a2d45;

  /* Neutral Colors */
  --color-gray: #879097;
  --color-gray-dark: #6a7279;
  --color-gray-light: #a4abb1;
  --color-gray-lighter: #d1d5d8;
  --color-white: #ffffff;
 --color-off-white: #ffffff;
  --color-black: #000000;

  /* Functional Colors */
  --color-success: #28a745;
  --color-error: #dc3545;
  --color-warning: #ffc107;
  --color-info: #17a2b8;

  /* Typography */
  --font-primary: 'Raleway', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Raleway', sans-serif;

  /* Font Sizes */
  --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: 2rem;        /* 32px */
  --font-size-3xl: 2.5rem;      /* 40px */
  --font-size-4xl: 3rem;        /* 48px */
  --font-size-5xl: 3.5rem;      /* 56px */
  --font-size-6xl: 4rem;        /* 64px */

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --line-height-loose: 2;

  /* Spacing Scale */
  --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 */
  --spacing-4xl: 6rem;          /* 96px */
  --spacing-5xl: 8rem;          /* 128px */

  /* Border Radius */
  --radius-sm: 0.25rem;         /* 4px */
  --radius-md: 0.5rem;          /* 8px */
  --radius-lg: 0.75rem;         /* 12px */
  --radius-xl: 1rem;            /* 16px */
  --radius-2xl: 1.5rem;         /* 24px */
  --radius-full: 9999px;

  /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

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

  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;

  /* Container Max-widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;

  /* Breakpoints */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* ==========================================================================
   RESET & NORMALIZE
   ========================================================================== */

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

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-secondary);
  background-color: var(--color-white);
  overflow-x: hidden;
}

/* Remove default list styles */
ul, ol {
  list-style: none;
}

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

/* Reset images */
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Reset form elements */
input, button, textarea, select {
  font: inherit;
  color: inherit;
}

/* Remove button styles */
button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

/* Reset table */
table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
}

h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

h5 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

h6 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Paragraphs */
p {
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

p:last-child {
  margin-bottom: 0;
}

/* Lead text */
.lead {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray);
}

/* Small text */
small, .text-small {
  font-size: var(--font-size-sm);
}

/* Links */
a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

a:focus-visible {
  color: var(--color-primary-dark);
}

/* Strong */
strong, b {
  font-weight: var(--font-weight-bold);
}

/* Emphasis */
em, i {
  font-style: italic;
}

/* Blockquote */
blockquote {
  padding-left: var(--spacing-xl);
  border-left: 4px solid var(--color-primary);
  font-style: italic;
  color: var(--color-gray);
  margin: var(--spacing-xl) 0;
}

/* ==========================================================================
   LAYOUT SYSTEM
   ========================================================================== */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

.container-sm {
  max-width: var(--container-sm);
}

.container-md {
  max-width: var(--container-md);
}

.container-lg {
  max-width: var(--container-lg);
}

.container-xl {
  max-width: var(--container-xl);
}

.container-2xl {
  max-width: var(--container-2xl);
}

.container-fluid {
  max-width: 100%;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* Column spans */
.col-span-1 { grid-column: span 1 / span 1; }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }
.col-span-4 { grid-column: span 4 / span 4; }
.col-span-6 { grid-column: span 6 / span 6; }
.col-span-full { grid-column: 1 / -1; }

/* Gap utilities */
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }
.gap-2xl { gap: var(--spacing-2xl); }

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

.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

/* Justify content */
.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; }

/* Align items */
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

/* Flex grow/shrink */
.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }

/* ==========================================================================
   SPACING UTILITIES
   ========================================================================== */

/* Margin utilities */
.m-0 { margin: 0; }
.m-xs { margin: var(--spacing-xs); }
.m-sm { margin: var(--spacing-sm); }
.m-md { margin: var(--spacing-md); }
.m-lg { margin: var(--spacing-lg); }
.m-xl { margin: var(--spacing-xl); }
.m-2xl { margin: var(--spacing-2xl); }
.m-3xl { margin: var(--spacing-3xl); }
.m-4xl { margin: var(--spacing-4xl); }

/* Margin Top */
.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }
.mt-3xl { margin-top: var(--spacing-3xl); }
.mt-4xl { margin-top: var(--spacing-4xl); }

/* Margin Bottom */
.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }
.mb-3xl { margin-bottom: var(--spacing-3xl); }
.mb-4xl { margin-bottom: var(--spacing-4xl); }

/* Margin Left/Right */
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Padding utilities */
.p-0 { padding: 0; }
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }
.p-2xl { padding: var(--spacing-2xl); }
.p-3xl { padding: var(--spacing-3xl); }
.p-4xl { padding: var(--spacing-4xl); }

/* Padding Top */
.pt-0 { padding-top: 0; }
.pt-xs { padding-top: var(--spacing-xs); }
.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }
.pt-2xl { padding-top: var(--spacing-2xl); }
.pt-3xl { padding-top: var(--spacing-3xl); }
.pt-4xl { padding-top: var(--spacing-4xl); }

/* Padding Bottom */
.pb-0 { padding-bottom: 0; }
.pb-xs { padding-bottom: var(--spacing-xs); }
.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }
.pb-2xl { padding-bottom: var(--spacing-2xl); }
.pb-3xl { padding-bottom: var(--spacing-3xl); }
.pb-4xl { padding-bottom: var(--spacing-4xl); }

/* Padding X (Left & Right) */
.px-0 { padding-left: 0; padding-right: 0; }
.px-xs { padding-left: var(--spacing-xs); padding-right: var(--spacing-xs); }
.px-sm { padding-left: var(--spacing-sm); padding-right: var(--spacing-sm); }
.px-md { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.px-lg { padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }
.px-xl { padding-left: var(--spacing-xl); padding-right: var(--spacing-xl); }

/* Padding Y (Top & Bottom) */
.py-0 { padding-top: 0; padding-bottom: 0; }
.py-xs { padding-top: var(--spacing-xs); padding-bottom: var(--spacing-xs); }
.py-sm { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-md { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-lg { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-xl { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.py-2xl { padding-top: var(--spacing-2xl); padding-bottom: var(--spacing-2xl); }
.py-3xl { padding-top: var(--spacing-3xl); padding-bottom: var(--spacing-3xl); }

/* ==========================================================================
   COLOR UTILITIES
   ========================================================================== */

/* Text colors */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-gray { color: var(--color-gray); }
.text-gray-dark { color: var(--color-gray-dark); }
.text-gray-light { color: var(--color-gray-light); }
.text-white { color: var(--color-white); }
.text-black { color: var(--color-black); }

/* Background colors */
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-gray { background-color: var(--color-gray); }
.bg-white { background-color: var(--color-white); }
.bg-off-white { background-color: var(--color-off-white); }
.bg-black { background-color: var(--color-black); }

/* ==========================================================================
   TEXT UTILITIES
   ========================================================================== */

.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

.text-uppercase { text-transform: uppercase; }
.text-lowercase { text-transform: lowercase; }
.text-capitalize { text-transform: capitalize; }

.font-light { font-weight: var(--font-weight-light); }
.font-regular { font-weight: var(--font-weight-regular); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }
.font-extrabold { font-weight: var(--font-weight-extrabold); }

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  user-select: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Primary */
.btn-primary,
.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

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

.btn-primary:active,
.btn--primary:active {
  transform: translateY(0);
}

/* Button Secondary */
.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-color: var(--color-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Button Outline */
.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

/* Button Outline White */
.btn-outline-white {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

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

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-lg);
}

/* Button Block */
.btn-block {
  display: flex;
  width: 100%;
}

/* ==========================================================================
   CARDS
   ========================================================================== */

.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-lighter);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-lighter);
  background-color: var(--color-off-white);
}

.card-img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-secondary);
}

.card-text {
  color: var(--color-gray);
  line-height: var(--line-height-relaxed);
}

/* Icon Card */
.card-icon {
  text-align: center;
  padding: var(--spacing-2xl);
}

.card-icon-image {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-off-white);
  border-radius: var(--radius-xl);
}

/* ==========================================================================
   FORMS
   ========================================================================== */

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-secondary);
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-secondary);
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-lighter);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(218, 41, 28, 0.1);
}

.form-control::placeholder {
  color: var(--color-gray-light);
}

/* Textarea */
textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* Select */
select.form-control {
  cursor: pointer;
  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='%23879097' d='M10.293 3.293L6 7.586 1.707 3.293A1 1 0 00.293 4.707l5 5a1 1 0 001.414 0l5-5a1 1 0 10-1.414-1.414z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  background-size: 12px;
  padding-right: var(--spacing-3xl);
  appearance: none;
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.form-check-input {
  width: 20px;
  height: 20px;
  margin-right: var(--spacing-sm);
  cursor: pointer;
}

.form-check-label {
  cursor: pointer;
  user-select: none;
}

/* Form validation */
.form-control.is-invalid {
  border-color: var(--color-error);
}

.form-control.is-valid {
  border-color: var(--color-success);
}

.invalid-feedback {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.valid-feedback {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-success);
}

/* Form field groups */
.form__group {
  position: relative;
  display: flex;
  flex-direction: column;
}

/* Form error messages - inline bajo el campo */
.form__error {
  display: block;
  margin-top: 4px;
  margin-bottom: 8px;
  padding: 0 var(--spacing-lg);
  font-size: 12px;
  font-weight: var(--font-weight-bold);
  color: #ffffff;
  background: none;
}

.form__error-general,
.form__message--error {
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  background-color: #fff5f5;
  border: 1px solid #dc3545;
  border-radius: var(--radius-md);
  color: #721c24;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-align: center;
}

.form__message--success {
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  background-color: rgba(40, 167, 69, 0.1);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-md);
  color: var(--color-success);
  font-size: var(--font-size-sm);
  text-align: center;
}

.form__group--error .form-control,
.form__input--error {
  border-color: var(--color-error) !important;
}

.form__success {
  display: none;
  padding: var(--spacing-md);
  margin-top: var(--spacing-lg);
  background-color: rgba(40, 167, 69, 0.1);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-md);
  color: var(--color-success);
  font-size: var(--font-size-sm);
  text-align: center;
}

.form__success--visible {
  display: block;
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */

/* Display */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Position */
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* Width */
.w-full { width: 100%; }
.w-auto { width: auto; }

/* Height */
.h-full { height: 100%; }
.h-auto { height: auto; }

/* Border radius */
.rounded { border-radius: var(--radius-md); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadow */
.shadow { box-shadow: var(--shadow-md); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-none { box-shadow: none; }

/* Opacity */
.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

/* User select */
.select-none { user-select: none; }

/* Pointer events */
.pointer-events-none { pointer-events: none; }

/* Visibility */
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* Object fit */
.object-cover { object-fit: cover; }
.object-contain { object-fit: contain; }

/* ==========================================================================
   SECTION STYLES
   ========================================================================== */

.section {
  padding: var(--spacing-4xl) 0;
}

.section-sm {
  padding: var(--spacing-3xl) 0;
}

.section-lg {
  padding: var(--spacing-5xl) 0;
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--color-secondary);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  text-align: center;
  color: var(--color-gray);
  margin-bottom: var(--spacing-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fadeIn {
  animation: fadeIn var(--transition-base);
}

.animate-fadeInUp {
  animation: fadeInUp var(--transition-base);
}

.animate-fadeInDown {
  animation: fadeInDown var(--transition-base);
}

/* ==========================================================================
   ACCESSIBILITY
   ========================================================================== */

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

/* Skip to main content */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}


/* ======================================== */
/* LIGHTBOX / GALERIA DE CERTIFICADOS       */
/* ======================================== */
.cert-lightbox-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.92);
  z-index: 99999;
  justify-content: center;
  align-items: center;
  animation: certFadeIn 0.3s ease;
}
.cert-lightbox-overlay.active {
  display: flex;
}
@keyframes certFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.cert-lightbox-container {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.cert-lightbox-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: certImgFadeIn 0.3s ease;
}
@keyframes certImgFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}
.cert-lightbox-close {
  position: fixed;
  top: 20px; right: 24px;
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  width: 44px; height: 44px;
  border-radius: 50%;
  font-size: 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 100000;
}
.cert-lightbox-close:hover { background: rgba(255,255,255,0.3); }
.cert-lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  width: 48px; height: 48px;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 100000;
}
.cert-lightbox-nav:hover { background: rgba(255,255,255,0.3); }
.cert-lightbox-prev { left: 20px; }
.cert-lightbox-next { right: 20px; }
.cert-lightbox-counter {
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  font-family: sans-serif;
}
.cert-lightbox-thumbnails {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.cert-lightbox-thumb {
  width: 70px;
  height: 50px;
  object-fit: cover;
  border-radius: 4px;
  cursor: pointer;
  opacity: 0.6;
  border: 2px solid transparent;
  transition: opacity 0.2s, border-color 0.2s;
}
.cert-lightbox-thumb:hover,
.cert-lightbox-thumb.active {
  opacity: 1;
  border-color: #fff;
}
@media (max-width: 600px) {
  .cert-lightbox-nav { display: none; }
  .cert-lightbox-img { max-height: 70vh; }
}