.mail-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: row;
    background: var(--bg-window-inside);
    font-family: var(--font-main);
    overflow: hidden;
}

.mail-sidebar {
    width: 120px;
    background: var(--bg-panel);
    border-right: 2px solid var(--k-black);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.folder-btn {
    padding: 12px 5px;
    cursor: pointer;
    text-align: center;
    border-bottom: 2px solid var(--k-black);
    font-size: 12px;
    font-weight: bold;
    text-transform: uppercase;
    background: var(--bg-panel);
    color: var(--k-black);
}

.folder-btn:hover {
    background: var(--k-gray-shadow);
}

.folder-btn.active {
    background: var(--k-black);
    color: var(--k-white);
}

.mail-list-pane {
    width: 200px;
    display: flex;
    flex-direction: column;
    background: var(--k-white);
    border-right: 2px solid var(--k-black);
    flex-shrink: 0;
}

.mail-list-header {
    background: var(--bg-panel);
    padding: 8px;
    font-size: 12px;
    font-weight: bold;
    border-bottom: 2px solid var(--k-black);
    color: var(--k-black);
    text-transform: uppercase;
}

.mail-list-scroll {
    flex: 1;
    overflow-y: auto;
}

.mail-item {
    padding: 12px 10px;
    cursor: pointer;
    border-bottom: 1px solid var(--k-gray-shadow);
    font-size: 13px;
    color: var(--k-black);
}

.mail-item.selected {
    background: var(--k-accent-red);
    color: var(--k-white);
}

.mail-content-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--k-white);
    min-width: 0;
}

.mail-header-info {
    padding: 12px;
    background: var(--k-gray-light);
    border-bottom: 2px solid var(--k-black);
    font-size: 13px;
    line-height: 1.4;
}

.mail-body-text {
    flex: 1;
    padding: 20px;
    font-size: 15px; /* Fonte aumentada */
    line-height: 1.6;
    overflow-y: auto;
    white-space: pre-wrap;
    color: var(--k-black);
}

/* Responsivo Mobile */
@media (max-width: 768px) {
    .mail-sidebar {
        width: 80px;
    }

    .folder-btn {
        font-size: 10px;
        padding: 15px 2px;
    }

    .mail-list-pane {
        width: 140px;
    }

    .mail-item {
        font-size: 12px;
        padding: 15px 8px;
    }

    .mail-body-text {
        font-size: 16px; /* Ainda maior no mobile para facilitar leitura */
        padding: 15px;
    }
}