/* ==========================================================================
   DESIGN SYSTEM — Concurso Procompetencia 2026
   Variables, tokens, reset y base tipográfica
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Google Fonts
   Cargadas vía <link> en el HTML para evitar render-blocking.
   -------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------
   2. Design Tokens (CSS Custom Properties)
   -------------------------------------------------------------------------- */
:root {
  /* Paleta de marca Procompetencia */
  --color-primary:       #005197;
  --color-primary-dark:  #003d73;
  --color-primary-light: #1a6ab5;
  --color-primary-50:    #e6f0fa;
  --color-primary-100:   #b3cfe9;

  --color-accent:        #de0809;
  --color-accent-dark:   #b50607;
  --color-accent-light:  #ff3b3b;
  --color-accent-50:     #fde8e8;

  /* Superficies y fondo */
  --color-bg:            #f4f7fb;
  --color-surface:       #ffffff;
  --color-surface-alt:   #eef2f8;
  --color-surface-dark:  #0a1929;

  /* Texto */
  --color-text:          #1a2332;
  --color-text-secondary:#3d5068;
  --color-text-muted:    #5a6a7e;
  --color-text-inverse:  #ffffff;

  /* Bordes */
  --color-border:        #d0dae8;
  --color-border-light:  #e8eef6;

  /* Feedback */
  --color-success:       #16a34a;
  --color-warning:       #d97706;
  --color-info:          #0284c7;

  /* --------------------------------------------------------------------------
     Tipografía
     -------------------------------------------------------------------------- */
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Poppins', system-ui, -apple-system, sans-serif;
  --font-mono:    'Courier New', monospace;

  --font-size-xs:   0.75rem;    /* 12px */
  --font-size-sm:   0.875rem;   /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg:   1.125rem;   /* 18px */
  --font-size-xl:   1.25rem;    /* 20px */
  --font-size-2xl:  1.5rem;     /* 24px */
  --font-size-3xl:  1.875rem;   /* 30px */
  --font-size-4xl:  2.25rem;    /* 36px */
  --font-size-5xl:  3rem;       /* 48px */
  --font-size-6xl:  3.75rem;    /* 60px */

  --font-weight-normal:   400;
  --font-weight-medium:   500;
  --font-weight-semibold: 600;
  --font-weight-bold:     700;
  --font-weight-extrabold:800;

  --line-height-tight:  1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed:1.75;

  /* --------------------------------------------------------------------------
     Espaciado
     -------------------------------------------------------------------------- */
  --space-1:  0.25rem;   /* 4px */
  --space-2:  0.5rem;    /* 8px */
  --space-3:  0.75rem;   /* 12px */
  --space-4:  1rem;      /* 16px */
  --space-5:  1.25rem;   /* 20px */
  --space-6:  1.5rem;    /* 24px */
  --space-8:  2rem;      /* 32px */
  --space-10: 2.5rem;    /* 40px */
  --space-12: 3rem;      /* 48px */
  --space-16: 4rem;      /* 64px */
  --space-20: 5rem;      /* 80px */
  --space-24: 6rem;      /* 96px */
  --space-32: 8rem;      /* 128px */

  /* --------------------------------------------------------------------------
     Radios de borde
     -------------------------------------------------------------------------- */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   32px;
  --radius-2xl:  48px;
  --radius-full: 9999px;

  /* --------------------------------------------------------------------------
     Sombras
     -------------------------------------------------------------------------- */
  --shadow-xs:     0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:     0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:     0 4px 16px rgba(0,81,151,0.10), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg:     0 8px 32px rgba(0,81,151,0.16), 0 4px 8px rgba(0,0,0,0.06);
  --shadow-xl:     0 16px 48px rgba(0,81,151,0.20), 0 8px 16px rgba(0,0,0,0.08);
  --shadow-accent: 0 4px 20px rgba(222,8,9,0.30);

  /* --------------------------------------------------------------------------
     Transiciones
     -------------------------------------------------------------------------- */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* --------------------------------------------------------------------------
     Layout
     -------------------------------------------------------------------------- */
  --container-sm:  640px;
  --container-md:  768px;
  --container-lg:  1024px;
  --container-xl:  1280px;
  --container-2xl: 1440px;

  --navbar-height: 70px;

  /* --------------------------------------------------------------------------
     Z-Index
     -------------------------------------------------------------------------- */
  --z-base:    0;
  --z-raised:  10;
  --z-overlay: 100;
  --z-modal:   200;
  --z-toast:   300;
  --z-navbar:  400;
}

/* --------------------------------------------------------------------------
   3. CSS Reset moderno
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: clip;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    /* Línea de margen izquierda */
    linear-gradient(
      90deg,
      transparent 118px,
      rgba(210, 80, 80, 0.30) 118px,
      rgba(210, 80, 80, 0.30) 120px,
      transparent 120px
    ),
    /* Líneas horizontales del renglón */
    repeating-linear-gradient(
      to bottom,
      transparent 0px,
      transparent 78px,
      rgba(90, 150, 210, 0.22) 78px,
      rgba(90, 150, 210, 0.22) 79px
    );
  pointer-events: none;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}

img,
video,
svg {
  display: block;
  max-width: 100%;
}

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

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

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

p {
  line-height: var(--line-height-relaxed);
}

/* --------------------------------------------------------------------------
   4. Utilidades base
   -------------------------------------------------------------------------- */

/* Contenedor responsivo */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (max-width: 768px) {
  .container {
    padding-inline: var(--space-4);
  }

  .section {
    padding-block: var(--space-12); /* 3rem en lugar de 5rem */
  }

  .section--sm {
    padding-block: var(--space-8); /* 2rem en lugar de 3rem */
  }

  .section-header {
    margin-bottom: var(--space-8); /* 2rem en lugar de 3rem */
  }

  .page-hero {
    padding-block: var(--space-16) var(--space-12); /* Reducido en móvil */
  }
}

/* Separador de sección */
.section {
  padding-block: var(--space-20);
}

.section--sm {
  padding-block: var(--space-12);
}

.section--lg {
  padding-block: var(--space-32);
}

/* Cabecera de sección */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-header__eyebrow {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section-header__title {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-5xl));
  color: var(--color-primary-dark);
  margin-bottom: var(--space-4);
}

.section-header__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
}

/* Grids responsivos */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  align-items: stretch;
}

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-4,
  .grid-3,
  .grid-2 { grid-template-columns: 1fr; }
}

/* Flex helpers */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

/* Visibilidad */
.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;
}

/* Padding de página (para navbar fija) */
.page-content {
  padding-top: var(--navbar-height);
}

/* Hero pequeño para páginas internas */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
  padding-block: var(--space-24) var(--space-16);
  text-align: center;
  color: var(--color-text-inverse);
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--color-bg);
  clip-path: ellipse(55% 100% at 50% 100%);
}

.page-hero__eyebrow {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
  color: rgba(255,255,255,0.9);
}

.page-hero__title {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  color: #fff;
  margin-bottom: var(--space-4);
}

.page-hero__subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.8);
  max-width: 560px;
  margin-inline: auto;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.65);
  justify-content: center;
  margin-bottom: var(--space-6);
}

.breadcrumb a {
  color: rgba(255,255,255,0.75);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover { color: #fff; }

.breadcrumb__sep { opacity: 0.4; }