/* Tab bar — first child of #center-column, fills toolbar zone */
.tab-bar {
    display: flex;
    flex-wrap: wrap;
    /* Align with notebook top bars: left = 10px padding + 36px margin, right = 10px padding + 8px scrollbar */
    margin: 0 20px 0 45px;
    padding: 0 6px;
    gap: 0px;
    align-items: flex-end;
    font-size: 0.85em;
    flex-shrink: 0;
    z-index: 4;
    height: var(--toolbar-height, 37px);
}

.tab-bar .tab {
    position: relative;
    padding: 2px 13px 1px 13px !important;
    background-color: #ffecb9;
    cursor: pointer;
    border-radius: 5px 5px 0 0;
    white-space: nowrap;
    color: #1a1a1a;
    border: 0.5px solid #666666;
    border-bottom: 0.5px solid #1d1d1d;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
    user-select: none;
    -webkit-user-select: none;
    font-size: 11px;
    font-family: var(--font-sans);
    line-height: 1.8;
}

.tab-bar .tab.active {
    background-color: #ffe39e;
    color: #1a1a1a;
    z-index: 1;
    padding: 3px 13px 1px 13px !important;
    margin-bottom: -1px;
    border-bottom: none;
    line-height: 1.8;
}

.tab-bar .tab.sticky {
    border-top: 2px solid #ffc630;
}

/* Close button */
.tab-bar .tab-close-btn {
    position: absolute;
    top: 3px;
    right: 3px;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background-color: #333333;
    color: #fafafa;
    font-size: 15px;
    line-height: 12px;
    font-weight: 400;
    text-align: center;
    cursor: pointer;
    display: none;
    border: none;
    padding: 1px 0px 0px 0px;
    font-family: Arial, sans-serif;
}

.tab-bar .tab:hover .tab-close-btn {
    display: block;
}

/* Preview (transient) tab — italic label */
.tab-bar .tab.tab-preview {
    font-style: italic;
}

/* Tab with icon (service tabs) */
.tab-bar .tab .tab-icon {
    width: 13px;
    height: 13px;
    margin-right: 5px;
    vertical-align: text-top;
    /* border-radius: 2px; */
}

/* Service iframe container (inside center-column) */
#service-tab-container {
    flex: 1;
    display: none;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
    min-height: 0;
    background: var(--bg-primary);
    border-radius: 5px 5px 0px 0px;
}

#service-tab-container iframe {
    flex: 1;
    width: 100%;
    border: none;
    border-left: 0.5px solid #666666;
    border-right: 0.5px solid #666666;
    display: block;
    min-height: 0;
    box-sizing: border-box;
}

/* Disable iframe pointer events during splitter drag to prevent mouse capture */
body.resizing #service-tab-container iframe {
    pointer-events: none;
}

/* Service top bar — mirrors notebook top bar */
.service-top-bar {
    height: 25px;
    background: #ffe39e;
    display: flex;
    align-items: center;
    padding: 2px 6px 0px 12px;
    gap: 8px;
    font-size: 11px;
    font-family: var(--font-sans);
    flex-shrink: 0;
    border-bottom: 0.5px solid #666666;
    border-left: 0.5px solid #666666;
    border-right: 0.5px solid #666666;
}

.service-top-bar-title {
    color: #1a1a1a;
}

.service-top-bar-spacer {
    flex: 1;
}

/* Second bar below service top bar */
.service-second-bar {
    height: 26px;
    background: #fff2bc;
    display: flex;
    align-items: center;
    padding: 0 12px;
    gap: 8px;
    font-size: 11px;
    font-family: var(--font-sans);
    flex-shrink: 0;
    border-bottom: 0.5px solid #aeaeae;
    border-left: 0.5px solid #666666;
    border-right: 0.5px solid #666666;
    position: relative;
}

.service-second-bar-left {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-right: auto;
}

.service-second-bar-right {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
}

/* Connection status LED */
.service-status-led {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
    background-color: #999999;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.15);
    transition: background-color 0.3s;
}

.service-status-led.connected {
    background-color: #4caf50;
    box-shadow: 0 0 4px rgba(76, 175, 80, 0.5), 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.service-status-led.disconnected {
    background-color: #f44336;
    box-shadow: 0 0 4px rgba(244, 67, 54, 0.4), 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.service-status-label {
    font-size: 10px;
    color: #555555;
    font-family: var(--font-sans);
}

/* Breadcrumb segments in second bar */
.breadcrumb-segment {
    font-size: 11px;
    font-family: var(--font-sans);
    color: #333333;
}

.breadcrumb-segment.breadcrumb-current {
    color: #333333;
}

.breadcrumb-sep {
    font-size: 11px;
    color: #999999;
    margin: 0 2px;
    font-family: var(--font-sans);
}

@media (max-width: 900px) {
    .tab-bar .tab {
        max-width: 120px;
        padding: 3px 10px 3px 10px;
    }
    .tab-bar .tab.active {
        padding: 5px 10px 3px 10px;
    }
}