/* ========================================
   CAUCES PSICOLOGÍA — Base / Reset
   ======================================== */

/* ── Box-sizing border-box global ── */
*, *::before, *::after { box-sizing: border-box; }

/* ── Reset ── */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

ul, ol { list-style: none; padding: 0; margin: 0; }

h1, h2, h3, h4, h5, h6, p, figure, blockquote {
  margin: 0;
}

/* ── Encabezados ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: var(--lh-heading);
  letter-spacing: var(--letter-spacing-display);
  color: var(--color-text);
}

h1 { font-size: var(--fs-4xl); font-weight: 500; }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); }
h5 { font-size: var(--fs-lg); }
h6 { font-size: var(--fs-md); }

/* ── Accesibilidad: Skip link ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 10000;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top var(--duration-fast) var(--ease);
}
.skip-link:focus {
  top: 0;
}

/* ── Focus visible ── */
:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
  border-radius: 2px;
}
:focus:not(:focus-visible) {
  outline: none;
}

/* ── Reduced motion ── */
@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;
  }
}

/* ── Selection ── */
::selection {
  background: var(--color-primary);
  color: #fff;
}

/* ── HR ── */
hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: var(--space-7) 0;
}

/* ── Utilidades ── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

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

.section {
  padding: var(--space-8) 0;
}

@media (max-width: 768px) {
  .section { padding: var(--space-7) 0; }
}

/* ── Imágenes responsive ── */
.img-responsive {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ── Grid helper ── */
.grid {
  display: grid;
  gap: var(--space-6);
}

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

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

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* ── Text ── */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-lg { font-size: var(--fs-lg); }
.text-sm { font-size: var(--fs-sm); }

/* ── Buttons base ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.8125rem 1.75rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-sm);
  line-height: 1.2;
  border-radius: var(--radius);
  transition: all var(--duration) var(--ease);
  text-decoration: none;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent-800);
  color: #fff;
  border-color: var(--color-accent-800);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--color-accent-700);
  border-color: var(--color-accent-700);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover, .btn-secondary:focus-visible {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  padding: 0.5rem 1rem;
}
.btn-ghost:hover, .btn-ghost:focus-visible {
  color: var(--color-primary);
  background: var(--color-surface-2);
}