/* ═══════════════════════════════════════════
   ADMIN.CSS
   Ecrã de administração (#screen-admin):
   cabeçalho, colunas, painéis, badge Firebase
   e lista de sessões ativas.
═══════════════════════════════════════════ */

#screen-admin {
  align-items: center;
  justify-content: flex-start;
  padding: 48px 20px 60px;
  gap: 0;
}

/* Cabeçalho com título e subtítulo */
.masthead       { text-align: center; margin-bottom: 40px; }
.masthead h1    { font-size: clamp(3.5rem, 12vw, 8rem); color: var(--accent); }
.masthead .sub  { font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
                  color: var(--muted); margin-top: 8px; }

/* Layout de duas colunas */
.admin-cols { display: flex; gap: 20px; width: 100%; max-width: 860px; flex-wrap: wrap; }

/* Painéis de configuração */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  flex: 1; min-width: 290px;
  display: flex; flex-direction: column; gap: 16px;
}
.panel-title {
  font-size: 11px; letter-spacing: 1px;
  text-transform: uppercase; color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 9px; margin-bottom: 6px;
}

/* Badge de estado Firebase */
.fb-status       { display: flex; align-items: center; gap: 8px; font-size: 11px;
                   color: var(--muted); padding: 8px 12px; border: 1px solid var(--border);
                   background: var(--bg); border-radius: 7px; }
.fb-status .dot  { width: 8px; height: 8px; border-radius: 50%; background: var(--border); flex-shrink: 0; }
.fb-status.ok .dot  { background: var(--human); box-shadow: 0 0 6px var(--human); }
.fb-status.err .dot { background: var(--ai); box-shadow: 0 0 6px var(--ai); }

/* Linha de sessão na lista */
.sess-row         { display: flex; justify-content: space-between; align-items: center;
                    padding: 9px 13px; border: 1px solid var(--border); border-radius: 7px;
                    background: var(--bg); font-size: 12px; cursor: pointer;
                    transition: border-color .15s; margin-bottom: 8px; }
.sess-row:hover   { border-color: var(--accent); }
.sess-row .sr-code { font-weight: 600; letter-spacing: 1px; color: var(--text); }
.sess-row .sr-n    { color: var(--muted); font-size: 11px; }

/* ── Botão flutuante de acesso admin (FAB) ── */
.admin-fab {
  position: fixed;
  bottom: 22px; right: 22px;
  z-index: 400;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 1.2rem;
  cursor: pointer;
  opacity: .6;
  transition: all .2s;
  display: flex; align-items: center; justify-content: center;
  line-height: 1;
}
.admin-fab:hover {
  opacity: 1;
  border-color: var(--accent);
  color: var(--accent);
  transform: scale(1.05);
}

/* ── Modal de código admin ────────────────── */
.admin-modal-ov {
  position: fixed; inset: 0; z-index: 600;
  background: rgba(12, 14, 20, .8);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.admin-modal-ov.hidden { display: none; }

.admin-modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  width: 100%; max-width: 360px;
  display: flex; flex-direction: column; gap: 16px;
}
.admin-modal-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2rem; letter-spacing: 2px; color: var(--accent);
}
.admin-modal-sub {
  font-size: 11px; color: var(--muted); line-height: 1.6; margin-top: -8px;
}

/* Mensagem de erro de código inválido */
.code-error {
  display: none; font-size: 11px;
  background: rgba(248,113,113,.12);
  border: 1px solid rgba(248,113,113,.3);
  border-radius: 7px;
  color: var(--ai);
  padding: 8px 12px;
  letter-spacing: .5px;
}