/* ──────────────────────────────────────────────────────
   DevraLint — Reset + Utilidades + Botones
────────────────────────────────────────────────────── */

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.2; letter-spacing: -.02em; }
p { font-size: var(--text-base); }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

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

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--radius);
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--ease);
  line-height: 1;
  white-space: nowrap;
}
/* Flat sólido: sin gradiente, un tono + press físico */
.btn-primary {
  background: var(--color-primary);
  color: #04121C;
  border-color: var(--color-primary);
  transition: background .15s ease, transform .1s ease;
}
.btn-primary:hover { background: #38BDF8; }
.btn-primary:active { transform: scale(.97); }

/* Link editorial: sin caja, subrayado + flecha que se separa al hover */
.btn-outline, .btn-outline-white {
  background: none; border: none; border-radius: 0; padding: var(--sp-1) 0;
  border-bottom: 1.5px solid var(--color-border);
  transition: border-color .2s ease, gap .2s ease;
}
.btn-outline { color: var(--color-text); }
.btn-outline-white { color: #fff; border-bottom-color: rgba(255,255,255,.35); }
.btn-outline::after, .btn-outline-white::after {
  content: "\2192"; display: inline-block; transition: transform .2s ease;
}
.btn-outline:hover, .btn-outline-white:hover { gap: var(--sp-3); }
.btn-outline:hover { border-color: var(--color-primary); }
.btn-outline-white:hover { border-color: #fff; }
.btn-outline:hover::after, .btn-outline-white:hover::after { transform: translateX(3px); }

/* ── Section shared ── */
.section          { padding: var(--sp-24) 0; }
.section-alt      { background: var(--color-bg-alt); }
.section-header   { text-align: center; margin-bottom: var(--sp-16); }

.section-tag {
  display: inline-block;
  background: rgba(14,165,233,.1);
  color: var(--color-primary-dark);
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--radius-full);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}
.section-tag--light {
  background: rgba(255,255,255,.15);
  color: rgba(255,255,255,.9);
}
.section-title    { font-size: var(--text-4xl); color: var(--color-text); margin-bottom: var(--sp-4); }
.section-subtitle { font-size: var(--text-lg); color: var(--color-text-secondary); max-width: 580px; margin: 0 auto; }

/* ── Fade-in animation ── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .fade-in { opacity: 1; transform: none; }
}