/* ============================================================================
   STYLE.CSS — Sistema base do design
   ----------------------------------------------------------------------------
   Este arquivo contém: variáveis de design (tokens), reset, tipografia,
   grid/layout e utilitários. Estilos de componentes específicos (nav, cards,
   botões, seções) estão em components.css — mantendo o CSS modular e fácil
   de manter conforme o projeto cresce.
   ============================================================================ */

/* ----------------------------------------------------------------------
   1. TOKENS — paleta, tipografia, espaçamento, motion
   ------------------------------------------------------------------- */
:root {
  /* Cor — estúdio escuro, quase preto, com um único acento.
     O acento é uma referência direta à luz "tally" (REC) de câmeras
     de transmissão: o único ponto de cor em um ambiente de edição. */
  --bg-void: #0a0a0b;
  --bg-graphite: #101012;
  --bg-graphite-2: #17171a;
  --bg-graphite-3: #1e1e21;
  --line: rgba(245, 245, 242, 0.09);
  --line-strong: rgba(245, 245, 242, 0.16);
  --ink: #f5f5f2;
  --ink-dim: #9a9a9f;
  --ink-faint: #616166;
  --accent: #ff4b2b;
  --accent-dim: #a8331d;
  --accent-wash: rgba(255, 75, 43, 0.1);

  /* Tipografia */
  --font-display: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  --fs-display-xl: clamp(2.75rem, 3.2rem + 4vw, 7.5rem);
  --fs-display-lg: clamp(2.25rem, 2rem + 3vw, 4.75rem);
  --fs-display-md: clamp(1.75rem, 1.5rem + 1.6vw, 3rem);
  --fs-display-sm: clamp(1.375rem, 1.2rem + 0.8vw, 1.875rem);
  --fs-body-lg: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
  --fs-body: 1rem;
  --fs-body-sm: 0.9rem;
  --fs-mono: 0.8125rem;
  --fs-mono-sm: 0.6875rem;

  --lh-tight: 1.04;
  --lh-snug: 1.2;
  --lh-normal: 1.55;

  --tr-tight: -0.045em;
  --tr-snug: -0.02em;
  --tr-wide: 0.08em;
  --tr-wider: 0.18em;

  /* Espaçamento fluido */
  --space-2xs: 0.375rem;
  --space-xs: 0.75rem;
  --space-sm: 1.25rem;
  --space-md: 2rem;
  --space-lg: clamp(2.5rem, 2rem + 2vw, 4.5rem);
  --space-xl: clamp(4rem, 3rem + 4vw, 8rem);
  --space-2xl: clamp(6rem, 4rem + 8vw, 12rem);

  --container-max: 1360px;
  --container-pad: clamp(1.25rem, 1rem + 2vw, 3.5rem);

  --radius-sm: 3px;
  --radius-md: 6px;
  --radius-lg: 10px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 0.22s;
  --dur-med: 0.5s;
  --dur-slow: 0.9s;

  --z-nav: 100;
  --z-cursor: 200;
  --z-overlay: 300;
  --z-lightbox: 400;
}

/* ----------------------------------------------------------------------
   2. RESET
   ------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--bg-void);
  color-scheme: dark;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg-void);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }
input, textarea { font: inherit; color: inherit; }

::selection { background: var(--accent); color: var(--bg-void); }

/* Scrollbar (webkit) — discreta, sem gradientes/excesso */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-void); }
::-webkit-scrollbar-thumb { background: var(--bg-graphite-3); border-radius: 10px; border: 2px solid var(--bg-void); }
::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); }

/* Foco visível — acessibilidade, nunca removido, apenas estilizado */
:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ----------------------------------------------------------------------
   3. TIPOGRAFIA
   ------------------------------------------------------------------- */
.display-xl {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: var(--fs-display-xl);
  line-height: var(--lh-tight);
  letter-spacing: var(--tr-tight);
}

.display-lg {
  font-family: var(--font-display);
  font-weight: 630;
  font-size: var(--fs-display-lg);
  line-height: var(--lh-tight);
  letter-spacing: var(--tr-tight);
}

.display-md {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-display-md);
  line-height: var(--lh-snug);
  letter-spacing: var(--tr-snug);
}

.display-sm {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-display-sm);
  line-height: var(--lh-snug);
  letter-spacing: var(--tr-snug);
}

.body-lg { font-size: var(--fs-body-lg); line-height: var(--lh-normal); color: var(--ink-dim); font-weight: 400; }
.body { font-size: var(--fs-body); line-height: var(--lh-normal); color: var(--ink-dim); }
.body-sm { font-size: var(--fs-body-sm); line-height: var(--lh-normal); color: var(--ink-dim); }

.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.02em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: var(--tr-wider);
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-wash);
  flex-shrink: 0;
}

.text-ink { color: var(--ink); }
.text-dim { color: var(--ink-dim); }
.text-faint { color: var(--ink-faint); }
.text-accent { color: var(--accent); }

/* ----------------------------------------------------------------------
   4. LAYOUT
   ------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  position: relative;
  padding-block: var(--space-2xl);
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 640px);
  gap: var(--space-lg);
  align-items: end;
  margin-bottom: var(--space-xl);
}

.section-head__title { display: flex; flex-direction: column; gap: var(--space-sm); }

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

.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;
}

.skip-link {
  position: fixed;
  top: -60px;
  left: var(--space-sm);
  z-index: 1000;
  background: var(--accent);
  color: var(--bg-void);
  padding: 0.75em 1.25em;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: var(--space-sm); }

@media (max-width: 860px) {
  .section-head { grid-template-columns: 1fr; align-items: start; }
}