/* Caixa de entrada do admin/instrutor (views/inbox/*) e sininho do cabeçalho */

.inbox-page { max-width: 820px; }

.inbox-header {
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid var(--border-subtle);
}

.inbox-header-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--accent-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.inbox-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin: 18px 0 12px;
}

.inbox-tabs { display: flex; gap: 8px; }

.inbox-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: var(--radius-full, 999px);
    border: 1px solid var(--border-default);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
}

.inbox-tab span {
    font-size: 11px;
    padding: 1px 7px;
    border-radius: 999px;
    background: var(--bg-tertiary);
}

.inbox-tab.is-selected {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.inbox-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
}

.inbox-list li + li { border-top: 1px solid var(--border-subtle); }

.inbox-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    color: var(--text-secondary);
    text-decoration: none;
}

.inbox-item:hover { background: var(--bg-hover); }

.inbox-item-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
}

.inbox-item.is-unread .inbox-item-icon {
    background: var(--accent-muted);
    color: var(--accent-primary);
}

.inbox-item-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.inbox-item-top {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    font-size: 12px;
}

.inbox-item-from {
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.inbox-item-date {
    color: var(--text-tertiary);
    white-space: nowrap;
    flex-shrink: 0;
}

.inbox-item-title {
    color: var(--text-secondary);
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.inbox-item-preview {
    color: var(--text-tertiary);
    font-size: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* não lida: negrito + ponto, como num e-mail */
.inbox-item.is-unread .inbox-item-title,
.inbox-item.is-unread .inbox-item-from {
    color: var(--text-primary);
    font-weight: 700;
}

.inbox-item-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--accent-primary);
    flex-shrink: 0;
    margin-top: 6px;
}

.inbox-empty {
    text-align: center;
    padding: 48px 16px;
    color: var(--text-tertiary);
    border: 1px dashed var(--border-default);
    border-radius: var(--radius-lg);
}

.inbox-empty svg { opacity: .5; margin-bottom: 10px; }
.inbox-empty p { color: var(--text-secondary); font-weight: 600; margin: 0 0 6px; }

.inbox-pager {
    display: flex;
    justify-content: space-between;
    margin-top: 12px;
}

/* mensagem aberta */
.inbox-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 14px;
}

.inbox-message {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.inbox-message-header h1 {
    font-size: 20px;
    margin: 0 0 6px;
    line-height: 1.3;
}

.inbox-message-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
    font-size: 13px;
    color: var(--text-tertiary);
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-subtle);
}

.inbox-message-from { color: var(--text-secondary); font-weight: 600; }

.inbox-message-body {
    white-space: pre-line;
    line-height: 1.6;
    color: var(--text-primary);
    font-size: 15px;
    margin: 16px 0;
}

.inbox-message-image {
    display: block;
    max-width: 100%;
    max-height: 60vh;
    border-radius: var(--radius-md);
    margin: 12px 0;
}

.inbox-message-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

/* sininho no cabeçalho */
.header-inbox {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    color: var(--text-secondary);
    text-decoration: none;
}

.header-inbox:hover { background: var(--bg-hover); color: var(--text-primary); }

.header-inbox-badge {
    position: absolute;
    top: 2px;
    right: 0;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 9px;
    background: var(--accent-primary);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    line-height: 18px;
    text-align: center;
}

.nav-badge {
    margin-left: auto;
    min-width: 20px;
    padding: 1px 7px;
    border-radius: 10px;
    background: var(--accent-primary);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    text-align: center;
}

/* alvo de toque de 44px no celular (revisão de UX) */
@media (max-width: 768px) {
    .header-inbox {
        width: 44px;
        height: 44px;
    }
}