/* ============================================================
   Companion de leitura — tema escuro + UI de marcações/notas.
   Tudo prefixado com .lv- para nao colidir com o CSS dos livros.
   ============================================================ */

/* ---------- variaveis da UI (seguem o tema) ---------- */
:root {
  --lv-surface: #ffffff;
  --lv-surface-2: #f4f1ea;
  --lv-ink: #1a1814;
  --lv-ink-soft: #5b554b;
  --lv-border: #e0dac9;
  --lv-accent: var(--accent, #c2410c);
  --lv-shadow: 0 6px 24px rgba(26,24,20,0.18);
  --lv-yellow: #ffd54a;
  --lv-green:  #6fce4f;
  --lv-blue:   #4aa8ff;
  --lv-pink:   #ff6fae;
}

/* ---------- TEMA ESCURO: override das variaveis dos livros ---------- */
html[data-theme="dark"] {
  color-scheme: dark;
  /* familia A (bases) + familia B (projetar/operacao) */
  --bg: #16130f;
  --bg-deep: #110e0b;
  --bg-darker: #0c0a07;
  --paper: #1e1a15;
  --ink: #ece6da;
  --ink-soft: #b3ab9c;
  --muted: #8a8273;
  --line: #322c24;
  --line-soft: #221d17;
  --rule: #322c24;
  --rule-soft: #221d17;
  --accent: #fb7a3c;
  --accent-deep: #f2691f;
  --accent-soft: rgba(251,122,60,0.22);
  --highlight: #b98a1f;
  --code-bg: #0d0b08;
  --code-fg: #f0ebe0;
  --code-ink: #f0ebe0;
  --shadow: 0 2px 8px rgba(0,0,0,0.5);
  --shadow-strong: 0 10px 30px rgba(0,0,0,0.6);
  --success: #4ade80;  --success-soft: rgba(74,222,128,0.15);
  --info:    #60a5fa;  --info-soft:    rgba(96,165,250,0.15);
  --warning: #fbbf24;  --warning-soft: rgba(251,191,36,0.15);
  --danger:  #f87171;  --danger-soft:  rgba(248,113,113,0.15);
  /* UI segue o tema */
  --lv-surface: #1e1a15;
  --lv-surface-2: #16130f;
  --lv-ink: #ece6da;
  --lv-ink-soft: #b3ab9c;
  --lv-border: #322c24;
  --lv-shadow: 0 10px 30px rgba(0,0,0,0.6);
}
/* superficies com fundo branco "hardcoded" no livro bases */
html[data-theme="dark"] .comp-card,
html[data-theme="dark"] .principle-card { background: rgba(255,255,255,0.05) !important; }
html[data-theme="dark"] img { filter: brightness(.85); }

html { transition: background-color .25s ease; }
body { transition: background-color .25s ease, color .25s ease; }

/* ---------- marcacoes (highlights) ---------- */
mark.lv-hl {
  background: color-mix(in srgb, var(--hlc, var(--lv-yellow)) 42%, transparent);
  color: inherit;
  border-radius: 2px;
  padding: 0 .5px;
  cursor: pointer;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  transition: background .15s ease;
}
html[data-theme="dark"] mark.lv-hl {
  background: color-mix(in srgb, var(--hlc, var(--lv-yellow)) 30%, transparent);
}
mark.lv-hl.lv-has-note { border-bottom: 2px solid var(--hlc, var(--lv-yellow)); }
mark.lv-hl:hover { background: color-mix(in srgb, var(--hlc, var(--lv-yellow)) 60%, transparent); }

/* ---------- barra flutuante ---------- */
.lv-fab {
  position: fixed; right: 16px; bottom: 16px; z-index: 2147483000;
  display: flex; flex-direction: column; gap: 10px;
}
.lv-fab button {
  width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--lv-border);
  background: var(--lv-surface); color: var(--lv-ink);
  box-shadow: var(--lv-shadow); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; line-height: 1; padding: 0;
  transition: transform .12s ease, background .2s ease;
  -webkit-tap-highlight-color: transparent;
}
.lv-fab button:hover { transform: translateY(-2px); }
.lv-fab button:active { transform: scale(.94); }
.lv-fab button svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; }

/* ---------- popover de selecao ---------- */
.lv-pop {
  position: absolute; z-index: 2147483001;
  display: none; align-items: center; gap: 6px;
  padding: 7px 9px; border-radius: 12px;
  background: var(--lv-surface); border: 1px solid var(--lv-border);
  box-shadow: var(--lv-shadow);
  transform: translate(-50%, -100%);
}
.lv-pop.lv-show { display: flex; }
.lv-pop .lv-swatch {
  width: 24px; height: 24px; border-radius: 50%; cursor: pointer;
  border: 2px solid rgba(0,0,0,.12);
}
html[data-theme="dark"] .lv-pop .lv-swatch { border-color: rgba(255,255,255,.18); }
.lv-pop .lv-swatch:hover { transform: scale(1.12); }
.lv-pop .lv-iconbtn {
  width: 28px; height: 28px; border-radius: 8px; border: none; cursor: pointer;
  background: transparent; color: var(--lv-ink); font-size: 15px;
  display: flex; align-items: center; justify-content: center;
}
.lv-pop .lv-iconbtn:hover { background: var(--lv-surface-2); }

/* ---------- painel lateral (drawer) ---------- */
.lv-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.35); z-index: 2147483400;
  opacity: 0; pointer-events: none; transition: opacity .2s ease;
}
.lv-overlay.lv-show { opacity: 1; pointer-events: auto; }
.lv-panel {
  position: fixed; top: 0; right: 0; height: 100%; width: 380px; max-width: 92vw;
  background: var(--lv-surface); color: var(--lv-ink);
  border-left: 1px solid var(--lv-border); box-shadow: var(--lv-shadow);
  z-index: 2147483401; transform: translateX(100%); transition: transform .25s ease;
  display: flex; flex-direction: column;
  font-family: var(--sans, system-ui, sans-serif);
}
.lv-panel.lv-show { transform: translateX(0); }
.lv-panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 18px; border-bottom: 1px solid var(--lv-border);
}
.lv-panel-head h2 { margin: 0; font-size: 17px; font-weight: 700; }
.lv-panel-head .lv-x { background: none; border: none; font-size: 22px; cursor: pointer; color: var(--lv-ink-soft); }
.lv-tabs { display: flex; gap: 4px; padding: 10px 14px 0; border-bottom: 1px solid var(--lv-border); flex-wrap: wrap; }
.lv-tab {
  border: none; background: none; cursor: pointer; padding: 8px 10px;
  font-size: 13px; font-weight: 600; color: var(--lv-ink-soft);
  border-bottom: 2px solid transparent;
}
.lv-tab.lv-active { color: var(--lv-accent); border-bottom-color: var(--lv-accent); }
.lv-panel-body { flex: 1; overflow-y: auto; padding: 12px 14px 28px; }
.lv-section { display: none; }
.lv-section.lv-active { display: block; }
.lv-empty { color: var(--lv-ink-soft); font-size: 14px; text-align: center; padding: 36px 10px; line-height: 1.5; }

.lv-item {
  border: 1px solid var(--lv-border); border-radius: 12px; padding: 12px 12px;
  margin-bottom: 10px; cursor: pointer; transition: border-color .15s ease, background .15s ease;
  background: var(--lv-surface-2);
}
.lv-item:hover { border-color: var(--lv-accent); }
.lv-item .lv-quote { font-size: 14px; line-height: 1.5; border-left: 3px solid var(--qc, var(--lv-yellow)); padding-left: 10px; }
.lv-item .lv-note { font-size: 13px; color: var(--lv-ink-soft); margin-top: 8px; white-space: pre-wrap; }
.lv-item .lv-meta { font-size: 11px; color: var(--lv-ink-soft); margin-top: 8px; display: flex; gap: 10px; align-items: center; }
.lv-item .lv-actions { margin-left: auto; display: flex; gap: 8px; }
.lv-item .lv-actions button { background: none; border: none; cursor: pointer; color: var(--lv-ink-soft); font-size: 12px; padding: 2px 4px; }
.lv-item .lv-actions button:hover { color: var(--lv-accent); }

/* editor de nota inline */
.lv-noteedit { margin-top: 8px; }
.lv-noteedit textarea {
  width: 100%; box-sizing: border-box; border: 1px solid var(--lv-border); border-radius: 8px;
  padding: 8px; font: inherit; font-size: 13px; resize: vertical; min-height: 60px;
  background: var(--lv-surface); color: var(--lv-ink);
}
.lv-btn {
  border: 1px solid var(--lv-border); background: var(--lv-surface); color: var(--lv-ink);
  border-radius: 8px; padding: 8px 12px; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer;
}
.lv-btn.lv-primary { background: var(--lv-accent); color: #fff; border-color: var(--lv-accent); }
.lv-btn:hover { filter: brightness(1.05); }
.lv-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* aba sincronizacao */
.lv-sync-code {
  font-family: var(--mono, monospace); font-size: 15px; letter-spacing: .04em;
  background: var(--lv-surface-2); border: 1px dashed var(--lv-border); border-radius: 8px;
  padding: 10px 12px; word-break: break-all; user-select: all;
}
.lv-help { font-size: 13px; color: var(--lv-ink-soft); line-height: 1.55; margin: 10px 0; }
.lv-input {
  width: 100%; box-sizing: border-box; border: 1px solid var(--lv-border); border-radius: 8px;
  padding: 9px 10px; font: inherit; font-size: 14px; background: var(--lv-surface); color: var(--lv-ink);
}
.lv-status { font-size: 12px; color: var(--lv-ink-soft); margin-top: 8px; }
.lv-status.lv-ok { color: var(--success, #15803d); }
.lv-status.lv-err { color: var(--danger, #b91c1c); }

/* toast "continuar de onde parou" */
.lv-toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%) translateY(20px);
  background: var(--lv-surface); color: var(--lv-ink); border: 1px solid var(--lv-border);
  box-shadow: var(--lv-shadow); border-radius: 999px; padding: 10px 16px; z-index: 2147483002;
  display: flex; gap: 12px; align-items: center; font-size: 14px; font-family: var(--sans, system-ui);
  opacity: 0; pointer-events: none; transition: opacity .25s ease, transform .25s ease;
}
.lv-toast.lv-show { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0); }
.lv-toast button { border: none; background: var(--lv-accent); color: #fff; border-radius: 999px; padding: 6px 12px; font-weight: 700; cursor: pointer; font-size: 13px; }
.lv-toast .lv-close { background: none; color: var(--lv-ink-soft); padding: 6px; }

/* swatch de cores para escolher cor padrao */
.lv-colors { display: flex; gap: 8px; }
.lv-colors .lv-swatch { width: 26px; height: 26px; border-radius: 50%; cursor: pointer; border: 2px solid transparent; }
.lv-colors .lv-swatch.lv-sel { border-color: var(--lv-ink); }

@media print { .lv-fab, .lv-pop, .lv-panel, .lv-overlay, .lv-toast { display: none !important; } }

/* ============================================================
   Correcao de layout mobile (consolidada). Nao afeta desktop.
   ============================================================ */
@media (max-width: 820px) {
  html, body { overflow-x: hidden !important; max-width: 100% !important; }
  body * { min-width: 0 !important; max-width: 100% !important; }
  .chapter, .comparison, .hero-stats { grid-template-columns: 1fr !important; }
  .chapter { margin-left: 0 !important; }
  pre, .code-block, .code-block pre, .code-header { overflow-x: auto !important; }
  table { display: block !important; overflow-x: auto !important; }
  h1, h2, h3, h4, h5, h6, p, li, blockquote, figcaption, a,
  .hero-lede, .cover-sub, .masthead-title, .chapter-toc-mini a { overflow-wrap: break-word; }
  :not(pre) > code { overflow-wrap: anywhere; word-break: break-word; }
  .cover-foot, .hero-foot { flex-wrap: wrap; gap: 6px 16px; }
  img, svg, video, canvas { max-width: 100% !important; height: auto !important; }
  /* a barra flutuante nao tapa o conteudo final */
  body { padding-bottom: 0; }
}