/* ==========================================================================
   Instituto Claudio Zeri — Estilos globais
   ========================================================================== */

html {
  font-size: 100%;
}

body {
  background-color: var(--color-off-white);
  color: var(--color-black);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
}

body.no-scroll {
  overflow: hidden;
  height: 100vh;
}

/* ---------- Tipografia ---------- */

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: var(--lh-heading);
  color: var(--color-black);
}

h1 {
  font-size: var(--fs-h1);
  line-height: var(--lh-tight);
  letter-spacing: -0.01em;
}

h2 {
  font-size: var(--fs-h2);
  letter-spacing: -0.005em;
}

h3 {
  font-size: var(--fs-h3);
}

h4 {
  font-size: var(--fs-h4);
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: var(--ls-mid);
  text-transform: uppercase;
}

p {
  color: var(--color-gray-dark);
}

.lede {
  font-size: var(--fs-body-lg);
  color: var(--color-gray-dark);
}

strong {
  font-weight: 700;
  color: var(--color-black);
}

.on-dark {
  color: var(--color-off-white);
}

.on-dark p,
.on-dark .lede {
  color: rgba(245, 243, 239, 0.78);
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-sans);
  font-size: var(--fs-micro);
  font-weight: 700;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-gold-dark);
}

.on-dark .eyebrow {
  color: var(--color-gold-soft);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 1px;
  background: currentColor;
}

/* ---------- Links ---------- */

a {
  transition: color var(--duration-fast) var(--ease-editorial);
}

.text-link {
  position: relative;
  display: inline-block;
  font-weight: 600;
  color: var(--color-black);
  padding-bottom: 2px;
}

.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background-color: currentColor;
  transform: scaleX(1);
  transform-origin: right;
  transition: transform var(--duration-mid) var(--ease-editorial);
}

.text-link:hover::after,
.text-link:focus-visible::after {
  transform-origin: left;
  transform: scaleX(0.35);
}

.on-dark .text-link {
  color: var(--color-white);
}

/* ---------- Foco / Acessibilidade ---------- */

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

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: var(--z-toast);
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-xs) var(--space-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top var(--duration-fast) var(--ease-editorial);
}

.skip-link:focus {
  top: var(--space-sm);
}

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

/* ---------- Layout ---------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

section {
  position: relative;
}

.section {
  padding-block: var(--space-2xl);
}

.section--tight {
  padding-block: var(--space-xl);
}

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

.section--soft {
  background-color: var(--color-off-white-warm);
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

.section-head + .section-head {
  margin-top: var(--space-lg);
}

.section-head__title {
  margin-top: var(--space-sm);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.grid {
  display: grid;
  gap: var(--space-md);
}

/* ---------- Reveal (scroll animation hook) ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-editorial),
    transform var(--duration-slow) var(--ease-editorial);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Divisores ---------- */

.divider {
  width: 100%;
  height: 1px;
  background: var(--color-border-subtle-dark);
  border: none;
}

.on-dark .divider {
  background: var(--color-border-subtle);
}

/* ---------- Imagens ---------- */

.media {
  overflow: hidden;
  background-color: var(--color-black-soft);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media--ratio-portrait {
  aspect-ratio: 4 / 5;
}

.media--ratio-square {
  aspect-ratio: 1 / 1;
}

.media--ratio-wide {
  aspect-ratio: 16 / 9;
}

.media--ratio-tall {
  aspect-ratio: 3 / 4;
}

/* ---------- Utilitários ---------- */

.u-mt-lg {
  margin-top: var(--space-lg);
}

.u-mt-md {
  margin-top: var(--space-md);
}

.u-center {
  text-align: center;
}