/* ============================================================
   MAQUIMOL Colombia - Main Stylesheet
   Reset / Variables / Base / Buttons / Grid / Sections / Animations / Accessibility
   ============================================================ */

/* --------------------------------------------
   1. RESET / NORMALIZE
   -------------------------------------------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

article, aside, details, figcaption, figure,
footer, header, hgroup, main, nav, section {
  display: block;
}

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

ul, ol {
  list-style: none;
}

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

button, input, textarea, select {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  outline: none;
}

button {
  cursor: pointer;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* --------------------------------------------
   2. CSS CUSTOM PROPERTIES
   -------------------------------------------- */
:root {
  --primary: #1a3a5c;
  --primary-light: #2d6da8;
  --primary-lighter: #4a9eff;
  --accent: #ff6b35;
  --accent-hover: #e55a2b;
  --bg: #f5f5f5;
  --text: #333;
  --text-light: #666;
  --white: #fff;
  --black: #000;
  --gray-100: #f0f0f0;
  --gray-200: #e0e0e0;
  --gray-300: #ccc;
  --gray-400: #999;
  --gray-500: #666;
  --gray-600: #444;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 50%;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-xl: 0 12px 48px rgba(0,0,0,0.15);
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --container-max: 1200px;
  --container-padding: 0 20px;
}

/* --------------------------------------------
   3. BASE STYLES
   -------------------------------------------- */
body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
  margin-bottom: 0.5em;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1em;
  color: var(--text);
}

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

a {
  color: var(--primary-light);
  transition: color var(--transition-base);
}

a:hover, a:focus {
  color: var(--primary-lighter);
}

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

ul, ol {
  padding-left: 1.25em;
  margin-bottom: 1em;
}

ul { list-style: disc; }
ol { list-style: decimal; }

li {
  margin-bottom: 0.25em;
}

blockquote {
  border-left: 4px solid var(--primary-lighter);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  background: var(--white);
  font-style: italic;
  color: var(--text-light);
}

hr {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: var(--spacing-xl) 0;
}

::selection {
  background: var(--primary-lighter);
  color: var(--white);
}

/* --------------------------------------------
   4. BUTTONS
   -------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px 28px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  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:focus-visible {
  outline: 3px solid var(--primary-lighter);
  outline-offset: 2px;
}

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

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

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

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

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

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

.btn-sm { padding: 8px 18px; font-size: 0.85rem; }
.btn-lg { padding: 16px 36px; font-size: 1.1rem; }
.btn-block { display: flex; width: 100%; }

.btn:disabled, .btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* --------------------------------------------
   5. GRID UTILITY
   -------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--container-padding);
}

.container-fluid {
  width: 100%;
  padding: var(--container-padding);
}

.grid-2, .grid-3, .grid-4 {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.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); }

.mb-0 { margin-bottom: 0; }
.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); }

.p-0 { padding: 0; }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

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

/* --------------------------------------------
   6. SECTIONS
   -------------------------------------------- */
.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-dark {
  background: var(--primary);
  color: var(--white);
}

.section-dark h1, .section-dark h2, .section-dark h3,
.section-dark h4, .section-dark h5, .section-dark h6 {
  color: var(--white);
}

.section-dark p {
  color: rgba(255, 255, 255, 0.85);
}

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

.section-accent h1, .section-accent h2, .section-accent h3,
.section-accent h4, .section-accent h5, .section-accent h6 {
  color: var(--white);
}

.section-accent p {
  color: rgba(255, 255, 255, 0.9);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

.section-dark .section-subtitle { color: rgba(255,255,255,0.7); }
.section-accent .section-subtitle { color: rgba(255,255,255,0.8); }

/* --------------------------------------------
   7. ANIMATIONS
   -------------------------------------------- */
.fade-in {
  opacity: 0;
  transition: opacity 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
}

.slide-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }

.animate__animated {
  animation-duration: 0.6s;
  animation-fill-mode: both;
}

.animate__fadeIn { animation-name: animateFadeIn; }
.animate__fadeInUp { animation-name: animateFadeInUp; }
.animate__fadeInDown { animation-name: animateFadeInDown; }
.animate__fadeInLeft { animation-name: animateFadeInLeft; }
.animate__fadeInRight { animation-name: animateFadeInRight; }

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

@keyframes animateFadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes animateFadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes animateFadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes animateFadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* --------------------------------------------
   8. ACCESSIBILITY
   -------------------------------------------- */
.screen-reader-text {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  z-index: 10000;
  transition: top var(--transition-base);
}

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

:focus-visible {
  outline: 3px solid var(--primary-lighter);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  html { scroll-behavior: auto; }
  .fade-in, .slide-up, .slide-in-left, .slide-in-right, .scale-in {
    opacity: 1;
    transform: none;
  }
}