/* Ao abrir por #suporte, as abas ficam abaixo da barra fixa do topo. */
.course-comments { scroll-margin-top: 110px; }
/* O header herda justify-content:space-between; sem trilha 1fr a coluna encolhe e as abas não ocupam a largura no celular. */
.course-comments-heading { grid-template-columns: minmax(0, 1fr); }
.course-comment-tabs { display: flex; align-items: center; gap: 6px; width: max-content; max-width: 100%; margin-top: 8px; padding: 5px; border: 1px solid var(--line); border-radius: var(--radius-card); background: var(--surface); }
.course-comment-tabs button { position: relative; display: inline-flex; align-items: center; gap: 8px; min-height: 42px; padding: 0 16px; border: 0; border-radius: var(--radius-control); background: transparent; color: var(--muted); font-size: 15px; font-weight: 750; cursor: pointer; transition: background .15s ease, color .15s ease; }
.course-comment-tabs button:hover { background: var(--brand-soft); color: var(--brand-dark); }
.course-comment-tabs button:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; }
.course-comment-tabs button[aria-selected="true"] { background: var(--brand); color: #fff; }
.course-comment-tabs b { display: grid; min-width: 24px; height: 24px; padding: 0 7px; place-items: center; border-radius: 999px; background: var(--line-soft); color: var(--muted); font-size: 12px; }
.course-comment-tabs button[aria-selected="true"] b { background: rgba(255, 255, 255, .22); color: #fff; }
.course-support-unread { position: absolute; top: 6px; right: 6px; width: 10px; height: 10px; border: 2px solid var(--surface); border-radius: 50%; background: var(--danger); }
/* O painel herda a grade de .course-comments para manter o espaçamento entre formulário e lista. */
.course-comment-panel { display: grid; gap: inherit; }
.course-support-intro { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.45; }
.course-support-empty { margin: 0; color: var(--muted); text-align: center; }
/* Sobrescreve as regras genéricas de .course-comment-list article (grade avatar + conteúdo). */
.course-support-list .course-support-thread { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; }
.course-support-thread > .course-support-messages { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.course-support-thread > .course-comment-actions { display: flex; }
.course-support-thread > .course-comment-actions .course-comment-reply-trigger { margin-top: 0; }
.course-support-thread-header { display: flex; justify-content: flex-end; }
.course-support-state { display: inline-flex; align-items: center; gap: 7px; padding: 5px 10px; border-radius: 999px; color: var(--ink-soft); font-size: 12px; font-weight: 800; white-space: nowrap; }
.course-support-state::before { content: ""; width: 7px; height: 7px; border-radius: 50%; }
.course-support-state.is-awaiting { background: var(--warning-soft); }
.course-support-state.is-awaiting::before { background: var(--warning); }
.course-support-state.is-answered { background: var(--success-soft); }
.course-support-state.is-answered::before { background: var(--success); }
.course-support-messages { display: grid; gap: 12px; }
.course-support-message.is-staff { padding-left: 12px; border-left: 3px solid var(--brand); }
.course-support-staff-note { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 20px; border: 1px dashed var(--brand-line); border-radius: var(--radius-card); background: var(--brand-soft); }
.course-support-staff-note p { margin: 0; color: var(--ink-soft); line-height: 1.5; }
.course-comment-section-tabs a b { display: inline-grid; min-width: 22px; height: 22px; margin-left: 6px; padding: 0 6px; place-items: center; border-radius: 999px; background: var(--line-soft); color: var(--muted); font-size: 12px; }
.course-comment-section-tabs a.is-current b { background: rgba(255, 255, 255, .22); color: #fff; }
.course-support-admin-messages { display: grid; gap: 10px; padding: 20px 22px; }
.course-support-admin-message { padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius-control); background: var(--canvas); }
.course-support-admin-message.is-staff { border-color: var(--brand-line); background: var(--brand-soft); }
.course-support-admin-message > div { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.course-support-admin-message time { margin-left: auto; color: var(--muted); font-size: 12px; }
.course-support-admin-message p { margin: 6px 0 0; white-space: pre-line; overflow-wrap: anywhere; }

@media (max-width: 620px) {
  .course-comment-tabs { width: 100%; }
  .course-comment-tabs button { flex: 1; justify-content: center; padding: 0 10px; }
  .course-support-staff-note { align-items: stretch; flex-direction: column; }
  .course-support-admin-messages { padding: 16px; }
  .course-support-admin-message time { margin-left: 0; width: 100%; }
}