/* ═══════════════════════════════════════════════
   BASE — Reset + Tipografia + Utilitários
   ═══════════════════════════════════════════════ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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;
}

/* --- Skip to Content (Acessibilidade) --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-magenta);
  color: var(--color-white);
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  z-index: 100;
  transition: top var(--transition-fast);
}

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

/* --- Tipografia --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-deep-purple);
  line-height: 1.2;
}

h1 { font-size: var(--font-size-hero); }
h2 { font-size: clamp(1.5rem, 4vw, var(--font-size-4xl)); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
  font-family: var(--font-body);
  color: var(--color-gray-dark);
  line-height: 1.7;
}

.text-display {
  font-family: var(--font-display);
  font-weight: 700;
}

.text-body {
  font-family: var(--font-body);
  font-weight: 400;
}

.text-caption {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--color-gray-medium);
}

.text-label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--font-size-xs);
  color: var(--color-gray-medium);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* --- Utilitários de Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

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

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

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

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

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* --- Utilitários de Cor --- */
.bg-primary { background-color: var(--color-deep-purple); }
.bg-alt { background-color: var(--color-gray-light); }
.bg-white { background-color: var(--color-white); }
.text-white { color: var(--color-white); }
.text-cyan { color: var(--color-cyan); }
.text-magenta { color: var(--color-magenta); }

/* --- Acessibilidade: 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;
  }
}

/* --- Focus Visible --- */
:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}

/* --- Seleção de Texto --- */
::selection {
  background: rgba(109, 204, 242, 0.3);
  color: var(--color-deep-purple);
}

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