/* Split Pane Inbox Layout */
.inbox-container {
    display: flex;
    height: calc(100vh - 64px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    overflow: hidden;
    background-color: var(--color-bg-primary);
}

.thread-list-pane {
    width: 320px;
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    background-color: var(--color-bg-secondary);
}

.thread-detail-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* Thread Item styles */
.thread-item {
    padding: 14px 16px;
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color 0.15s;
}

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

.thread-item.active {
    background-color: var(--color-bg-active);
}

.thread-item-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 4px;
}

.thread-item-sender {
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

.thread-item-time {
    font-size: 11px;
    color: var(--color-text-secondary);
}

.thread-item-subject {
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.thread-item.unread .thread-item-subject,
.thread-item.unread .thread-item-sender {
    font-weight: 700;
}

.thread-item-snippet {
    font-size: 12px;
    color: var(--color-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Thread Message Detail styles */
.thread-header-bar {
    padding: 16px 24px;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-bg-primary);
}

.thread-title {
    font-size: 16px;
    font-weight: 600;
}

.messages-scroller {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    background-color: var(--color-bg-primary);
}

.message-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    margin-bottom: 16px;
    background-color: var(--color-bg-primary);
}

.message-card-header {
    padding: 12px 16px;
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    font-size: 12px;
}

.message-sender {
    font-weight: 600;
}

.message-recipient {
    color: var(--color-text-secondary);
}

.message-time {
    color: var(--color-text-secondary);
}

.message-card-body {
    padding: 16px;
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Attachments */
.attachments-list {
    margin-top: 12px;
    padding: 12px 16px;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg-secondary);
}

.attachments-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.attachment-item {
    display: inline-block;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    padding: 4px 8px;
    font-size: 12px;
    margin-right: 8px;
    margin-bottom: 8px;
}

.attachment-link {
    cursor: pointer;
    font-weight: 600;
    text-decoration: underline;
}

/* Reply Composer */
.reply-composer {
    padding: 24px;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg-secondary);
}

.reply-composer textarea {
    height: 100px;
    resize: none;
    margin-bottom: 12px;
}

/* Mailbox List Pane styles */
.mailbox-list-pane {
    width: 250px;
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    background-color: var(--color-bg-secondary);
}

.mailbox-item-nav {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color 0.15s;
}

.mailbox-item-nav:hover {
    background-color: var(--color-bg-hover);
}

.mailbox-item-nav.active {
    background-color: var(--color-bg-active);
}

.mailbox-item-nav-addr {
    font-weight: 600;
    font-size: 12px;
    word-break: break-all;
    margin-bottom: 4px;
}

.mailbox-item-nav-meta {
    font-size: 10.5px;
    color: var(--color-text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Searchable Select styles */
.searchable-select-dropdown {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 1000;
}

.searchable-student-item {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 13px;
    border-bottom: 1px solid var(--color-border);
    transition: background-color 0.15s;
    color: var(--color-text-primary);
}

.searchable-student-item:last-child {
    border-bottom: none;
}

.searchable-student-item:hover {
    background-color: var(--color-bg-hover);
}

.searchable-student-item.active {
    background-color: var(--color-bg-active);
    font-weight: 600;
}

/* Student Profile Summary Card */
.student-profile-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background-color: var(--color-bg-secondary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.profile-card-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.profile-card-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text-primary);
}

.profile-card-meta {
    font-size: 12.5px;
    color: var(--color-text-secondary);
}

.profile-card-stats {
    display: flex;
    gap: 16px;
}

.profile-stat-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border-radius: 4px;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    min-width: 90px;
}

.profile-stat-val {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text-primary);
}

.profile-stat-lbl {
    font-size: 10px;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    font-weight: 600;
    margin-top: 2px;
}