/* ================================================
   GLOBAL — Reset, Base, Utilidades
   ================================================ */

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.65;
  color: var(--clr-text);
  background-color: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol { list-style: none; }

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

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

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

/* ---- Sección base ---- */
.section {
  padding-block: var(--section-py);
}

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

/* ---- Fondos ---- */
.bg-main       { background-color: var(--clr-bg); }
.bg-alt        { background-color: var(--clr-bg-alt); }
.bg-lavender   { background-color: var(--clr-bg-lavender); }
.bg-white      { background-color: var(--clr-white); }
.bg-primary    { background-color: var(--clr-primary); }
.bg-footer     { background-color: var(--clr-footer-bg); }

/* ---- Tipografía ---- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  color: var(--clr-text);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--clr-text);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.75rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--clr-primary-dark);
}

.section-subtitle {
  font-family: var(--font-sans);
  font-size: var(--text-md);
  font-weight: 300;
  color: var(--clr-text-soft);
  line-height: 1.7;
  max-width: 580px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-primary-soft);
  margin-bottom: var(--space-4);
}

.section-header {
  margin-bottom: var(--space-12);
}

.section-header--center {
  text-align: center;
}

.section-header--center .section-subtitle {
  margin-inline: auto;
}

.divider {
  width: 40px;
  height: 2px;
  background: var(--clr-primary);
  margin-bottom: var(--space-5);
}

.divider--center {
  margin-inline: auto;
}

/* ---- Grid helpers ---- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

.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);
}

/* ---- Imagen placeholder ---- */
.img-placeholder {
  width: 100%;
  background: linear-gradient(135deg, var(--clr-bg-lavender) 0%, var(--clr-primary-pale) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.img-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(155, 111, 204, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(107, 63, 160, 0.08) 0%, transparent 50%);
}

.img-placeholder__label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-primary-soft);
  opacity: 0.7;
  position: relative;
  z-index: 1;
  padding: var(--space-4);
  text-align: center;
}

/* ---- Ratio helpers ---- */
.ratio-16-9  { aspect-ratio: 16/9; }
.ratio-16-6  { aspect-ratio: 16/6; }
.ratio-4-3   { aspect-ratio: 4/3; }
.ratio-3-4   { aspect-ratio: 3/4; }
.ratio-4-5   { aspect-ratio: 4/5; }
.ratio-1-1   { aspect-ratio: 1/1; }

/* ---- Scroll reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  :root {
    --section-py: 72px;
    --section-py-sm: 48px;
  }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --section-py: 56px;
    --section-py-sm: 40px;
  }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
}