/* ================================================================
   HERÓDOTO — Tema Manuscrito Histórico
   Paleta: pergaminho, pigmentos naturais, iluminação de vela
   ================================================================ */

/* Fontes via HTML <link> — IM Fell English + Crimson Text */

/* ─── Variáveis de pigmentos históricos ─── */
:root {
  --perg-claro:   #f6f1e4;
  --perg-medio:   #e8dfc8;
  --perg-escuro:  #c8b898;
  --tinta-pena:   #2a1e0f;
  --tinta-desbotada: #5a4030;
  --borda-pergaminho: #b09870;
  --vermelho-ocre: #8b3a2a;
  --azul-lapislazuli: #2b4b7e;
  --dourado-velho: #7a6228;

  --fonte-titulo: 'IM Fell English', 'Palatino Linotype', Palatino, Georgia, serif;
  --fonte-texto:  'Crimson Text', 'Palatino Linotype', Palatino, Georgia, serif;
}

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

/* ─── FUNDO GLOBAL: textura de pergaminho com vinheta ─── */
body {
  font-family: var(--fonte-texto);
  color: var(--tinta-pena);
  overflow: hidden;
  background-color: #a89070;

  /* Textura base */
  background-image: url('../assets/pergaminho.jpg');
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
}

/* Overlay: escurecimento + vinheta (pseudo-element via wrapper) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at center, transparent 30%, rgba(15,8,2,0.42) 100%),
    rgba(15,8,2,0.16);
  pointer-events: none;
  z-index: 0;
}

/* ─── CABEÇALHO: como faixa de manuscrito iluminado ─── */
header {
  position: relative;
  z-index: 10;
  background:
    linear-gradient(180deg, #2a1e0f 0%, #3d2e1a 100%);
  color: var(--perg-medio);
  padding: 1rem 2rem;
  border-bottom: 3px solid var(--dourado-velho);
  box-shadow: 0 3px 18px rgba(0,0,0,0.55);
}

header::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--borda-pergaminho), transparent);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1800px;
  margin: 0 auto;
}

.titulo h1 {
  font-family: var(--fonte-titulo);
  font-size: 1.7rem;
  font-weight: 400;
  font-variant: small-caps;
  letter-spacing: 0.08em;
  color: var(--perg-claro);
  text-shadow: 0 1px 6px rgba(0,0,0,0.6);
  margin-bottom: 0.1rem;
}

.titulo p {
  font-family: var(--fonte-texto);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--perg-escuro);
  opacity: 0.88;
  letter-spacing: 0.02em;
}

.controls-top {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.fontes-btn {
  font-family: var(--fonte-texto);
  font-size: 0.85rem;
  font-variant: small-caps;
  letter-spacing: 0.06em;
  color: var(--perg-medio);
  text-decoration: none;
  padding: 0.38rem 0.85rem;
  border: 1px solid var(--borda-pergaminho);
  border-radius: 2px;
  background: rgba(255,255,255,0.06);
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}
.fontes-btn:hover {
  background: rgba(255,255,255,0.15);
  color: var(--perg-claro);
}

.lang-label {
  font-family: var(--fonte-texto);
  font-size: 0.85rem;
  font-variant: small-caps;
  letter-spacing: 0.05em;
  color: var(--perg-escuro);
}

select {
  padding: 0.45rem 2rem 0.45rem 0.75rem;
  border: 1px solid var(--borda-pergaminho);
  background: rgba(42, 30, 15, 0.55);
  color: var(--perg-claro);
  border-radius: 2px;
  cursor: pointer;
  font-size: 0.88rem;
  font-family: var(--fonte-texto);
  font-variant: small-caps;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23c8b898' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  min-width: 120px;
  letter-spacing: 0.03em;
}

select:hover {
  background-color: rgba(42, 30, 15, 0.75);
  border-color: var(--perg-claro);
}

select option {
  background: #2a1e0f;
  color: var(--perg-claro);
}

/* ─── LAYOUT PRINCIPAL ─── */
.container {
  display: flex;
  /* dvh = dynamic viewport height (mobile c/ barra retrátil), fallback para --app-height */
  height: calc(var(--app-height, 100dvh) - 88px);
  position: relative;
  z-index: 1;
}

/* ─── SIDEBAR: índice de manuscrito ─── */
.sidebar {
  width: 280px;
  background: rgba(38, 26, 12, 0.88);
  padding: 1.2rem 1rem;
  /* Fita decorativa: border-image não rola com o conteúdo */
  border-left: 5px solid transparent;
  border-image: linear-gradient(
    180deg,
    var(--dourado-velho)   0%,
    var(--vermelho-ocre)  35%,
    var(--dourado-velho)  65%,
    var(--vermelho-ocre)  85%,
    var(--dourado-velho) 100%
  ) 1;
  border-right: 3px solid var(--borda-pergaminho);
  overflow-y: auto;
  flex-shrink: 0;
  position: relative;
  box-shadow: 3px 0 20px rgba(0,0,0,0.4);
}

.sidebar h2 {
  font-family: var(--fonte-titulo);
  font-size: 1.05rem;
  font-variant: small-caps;
  letter-spacing: 0.12em;
  color: var(--perg-escuro);
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(184, 152, 112, 0.35);
  text-align: center;
  font-weight: 400;
}

/* ─── ÁREA DO GRAFO: folha de pergaminho aberta ─── */
.main-content {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: stretch;
  padding: 16px;
}

#grafo {
  width: 100%;
  height: 100%;
  background: var(--perg-claro);
  border-radius: 3px;
  box-shadow:
    0 0 0 1px var(--borda-pergaminho),
    0 4px 40px rgba(0,0,0,0.45),
    inset 0 0 60px rgba(180,155,110,0.12);
  position: relative;
}

/* Scrollbar da sidebar: estilo antiquado */
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-track { background: rgba(0,0,0,0.2); }
.sidebar::-webkit-scrollbar-thumb {
  background: var(--borda-pergaminho);
  border-radius: 1px;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .header-inner { flex-direction: column; gap: 0.75rem; text-align: center; }
}

@media (max-width: 768px) {
  header { padding: 0.75rem 1rem; }
  .titulo h1 { font-size: 1.35rem; }
  .container { flex-direction: column; }
  .sidebar {
    width: 100%;
    max-height: 38vh;
    border-right: none;
    border-bottom: 3px solid var(--borda-pergaminho);
  }
  .main-content { padding: 8px; }
}