/* =========================================================
   @font-face
   ========================================================= */

@font-face {
  font-family: 'Crimson Pro';
  src: url('../fonts/CrimsonPro-VariableFont_wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Crimson Pro';
  src: url('../fonts/CrimsonPro-Italic-VariableFont_wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Urbanist';
  src: url('../fonts/Urbanist-VariableFont_wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Urbanist';
  src: url('../fonts/Urbanist-Italic-VariableFont_wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

/* =========================================================
   Custom Properties
   ========================================================= */

:root {
  /* Cores */
  --color-blue-foundation: #0136A8;
  --color-academic-ivory:  #F6EFE7;
  --color-blue-clarity:    #3C91C8;
  --color-coral-dialogue:  #FE6E54;
  --color-coral-hover:     #E85A3F;
  --color-ink:             #111111;
  --color-ink-muted:       #555555;
  --color-border:          #E2D9CE;
  --color-white:           #FFFFFF;

  /* Tipografia — famílias */
  --font-display: 'Crimson Pro', serif;
  --font-body:    'Urbanist', sans-serif;

  /* Tipografia — escala */
  --text-display: clamp(3.5rem, 9vw, 7rem);
  --text-h1:      clamp(2.25rem, 5vw, 4rem);
  --text-h2:      clamp(2rem, 4vw, 2.4rem);
  --text-h3:      clamp(1.375rem, 2vw, 1.75rem);
  --text-body:    1.0625rem;
  --text-sm:      0.9375rem;
  --text-label:   0.6875rem;

  --leading-display: 1.05;
  --leading-body:    1.65;
  --leading-heading: 1.2;

  /* Espaçamento */
  --space-4:   0.25rem;
  --space-8:   0.5rem;
  --space-12:  0.75rem;
  --space-16:  1rem;
  --space-24:  1.5rem;
  --space-32:  2rem;
  --space-48:  3rem;
  --space-64:  4rem;
  --space-80:  5rem;
  --space-120: 7.5rem;

  --section-padding-y-mobile:  var(--space-80);
  --section-padding-y-desktop: var(--space-120);
  --section-padding-x-mobile:  var(--space-24);
  --section-padding-x-desktop: var(--space-48);

  --container-max:   1200px;
  --container-prose: 760px;

  --grid-gap:     var(--space-24);
  --card-padding: var(--space-32);
  --card-radius:  8px;
  --card-border:  1px solid var(--color-border);
}

/* =========================================================
   Reset
   ========================================================= */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-ink);
  background: var(--color-academic-ivory);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* =========================================================
   Utilitários globais
   ========================================================= */

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

.btn-primary {
  display: inline-block;
  background: var(--color-coral-dialogue);
  color: var(--color-white);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-body);
  padding: 14px 32px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background 200ms ease, transform 150ms ease;
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--color-coral-hover);
  transform: translateY(-1px);
}

.btn-primary:focus-visible {
  outline: 3px solid var(--color-blue-clarity);
  outline-offset: 3px;
}

.btn-blue {
  display: inline-block;
  background: var(--color-blue-foundation);
  color: var(--color-white);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-body);
  padding: 14px 36px;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: background 200ms ease, transform 150ms ease;
  text-decoration: none;
}

.btn-blue:hover {
  background: #0128a0;
  transform: translateY(-1px);
}

.btn-blue:focus-visible {
  outline: 3px solid var(--color-coral-dialogue);
  outline-offset: 3px;
}

/* =========================================================
   Animações — reveal on scroll
   ========================================================= */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 500ms cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 500ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* stagger dos cards */
.ecosystem-card:nth-child(1) { transition-delay: 0ms; }
.ecosystem-card:nth-child(2) { transition-delay: 80ms; }
.ecosystem-card:nth-child(3) { transition-delay: 160ms; }
.ecosystem-card:nth-child(4) { transition-delay: 240ms; }
.ecosystem-card:nth-child(5) { transition-delay: 320ms; }
.ecosystem-card:nth-child(6) { transition-delay: 400ms; }
.ecosystem-card:nth-child(7) { transition-delay: 480ms; }

/* =========================================================
   Acessibilidade — prefers-reduced-motion
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}