/* ===================================================================
   Bera · Brand Guide Web · base.css
   Reset + typography setup + layout primitives + focus styles
   =================================================================== */

/* === Local fonts (referenciadas da raiz · já no SW da home) ===
   v2.1: Versos (Fabio Haag Type, licença Individual do Bera: webfont liberada, não redistribuir)
   em display e corpo; JetBrains Mono (OFL) na notação técnica. */
@font-face {
  font-family: 'Versos';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/VersosVariable.woff2') format('woff2-variations'),
       url('/fonts/VersosVariable.woff2') format('woff2');
}
@font-face {
  font-family: 'Versos';
  font-style: italic;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/VersosVariable.woff2') format('woff2-variations'),
       url('/fonts/VersosVariable.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/JetBrainsMono-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/fonts/JetBrainsMono-Medium.woff2') format('woff2');
}

/* === Reset enxuto === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-feature-settings: 'ss01'; /* v2.3 (2026-09-06): conjunto estilístico ligado em tudo; tnum via font-variant-numeric, que é aditivo */
  font-size: var(--fs-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  min-height: 100dvh;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

/* === Grid 12-col overlay (assinatura Atelier Técnico) === */
@media (prefers-reduced-motion: no-preference) {
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
      linear-gradient(to right, var(--grid) 1px, transparent 1px),
      linear-gradient(to right, transparent calc(8.333% - 0.5px), var(--grid-strong) 8.333%, transparent calc(8.333% + 0.5px));
    background-size: 8.333% 100%;
    z-index: 1;
    opacity: 0.5;
  }
}

/* === Status bar fixa (clock + scroll % + last input) === */
.status-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--status-bar-h);
  background: var(--status-bar-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  gap: var(--space-6);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
  user-select: none;
}
.status-bar .group { display: inline-flex; gap: var(--space-2); align-items: center; }
.status-bar .lab { color: var(--muted-2); }
.status-bar .val { color: var(--accent-text); font-variant-numeric: tabular-nums; }
.status-bar .spacer { flex: 1; }
[data-theme="light"] .status-bar { background: rgba(250, 250, 250, 0.95); }

@media (max-width: 700px) {
  .status-bar { font-size: 9px; padding: 0 12px; gap: 12px; }
  .status-bar .group:not(:first-child):not(:last-child) { display: none; }
}

main { position: relative; z-index: 2; padding-top: var(--status-bar-h); }
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button {
  font: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
  color: inherit;
}
input, textarea, select { font: inherit; color: inherit; }
ul, ol { list-style: none; }

/* === Skip link (a11y) === */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--gutter);
  padding: var(--space-3) var(--space-4);
  background: var(--accent);
  color: var(--accent-contrast);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  z-index: var(--z-toast);
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-3); outline: 2px solid var(--paper); outline-offset: 2px; }

/* === Focus visible canônico (3:1 mínimo) === */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}

/* === Type primitives === */
.eyebrow {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-eyebrow);
  color: var(--muted);
  text-transform: uppercase;
}
.eyebrow .dot { color: var(--accent); margin: 0 0.6em; }

.label {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  color: var(--muted-2);
  text-transform: uppercase;
}

.mono {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: var(--fs-mono);
  letter-spacing: 0.04em;
}

.display {
  font-family: var(--font-display);
  font-weight: var(--weight-display);
  font-size: var(--fs-display);
  letter-spacing: var(--tracking-display);
  line-height: 1.02;
  text-wrap: balance;
}

.section-title {
  font-family: var(--font-display);
  font-weight: var(--weight-title);
  font-size: var(--fs-section);
  letter-spacing: var(--tracking-section);
  line-height: 1.1;
  text-wrap: balance;
}
.section-title em { font-style: normal; color: var(--accent-text); }

.card-title {
  font-family: var(--font-display);
  font-weight: var(--weight-title);
  font-size: var(--fs-card);
  letter-spacing: var(--tracking-card);
  line-height: 1.2;
}

.body-l {
  font-size: var(--fs-body-l);
  line-height: 1.55;
  color: var(--muted);
  max-width: 56ch;
  text-wrap: pretty;
}

.body {
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--muted);
  max-width: 60ch;
  text-wrap: pretty;
}

/* === Layout primitives === */
.scene {
  position: relative;
  padding-block: var(--section-pad);
  padding-inline: var(--gutter);
  scroll-margin-top: var(--space-8);
}
.scene:first-of-type { padding-top: clamp(64px, 8vw, 128px); }

.container { width: 100%; margin-inline: auto; }
.container--narrow { max-width: var(--container-narrow); }
.container--text { max-width: var(--container-text); }
.container--wide { max-width: var(--container-wide); }
.container--max { max-width: var(--container-max); }

.scene-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--block-pad);
}
.scene-head .eyebrow + .section-title { margin-top: var(--space-2); }

/* === Page chrome (footer) === */
.page-chrome {
  margin-top: var(--section-pad);
  padding: var(--space-6) var(--gutter);
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-chrome);
  color: var(--muted-2);
  text-transform: uppercase;
}
.page-chrome a { transition: color var(--transition-fast); }
.page-chrome a:hover { color: var(--fg); }

/* === Utility · clear space marker === */
.surface-1 { background: var(--surface-1); }
.surface-2 { background: var(--surface-2); }
.rule-top { border-top: 1px solid var(--rule); }

/* === Hidden visually but accessible === */
.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;
}

/* === Sparkle keyframe (porta da home, 700ms · glow por tema) === */
@keyframes sparkle {
  0%   { transform: scale(1) rotate(0deg);    filter: drop-shadow(0 0 0 transparent); }
  35%  { transform: scale(1.45) rotate(60deg); filter: drop-shadow(0 0 18px var(--glow)); }
  70%  { transform: scale(0.95) rotate(95deg); filter: drop-shadow(0 0 8px var(--glow-soft)); }
  100% { transform: scale(1) rotate(90deg);   filter: drop-shadow(0 0 0 transparent); }
}

@media (prefers-reduced-motion: reduce) {
  body { transition: none; }
  .skip-link { transition: none; }
}