Extn-BottomPanelTabs.less

/*
 * GNU AGPL-3.0 License
 *
 * Copyright (c) 2021 - present core.ai . All rights reserved.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see https://opensource.org/licenses/AGPL-3.0.
 *
 */

/* Bottom panel tab bar — switches between tabbed bottom panels.
 * Visual style mirrors the file tab bar (Extn-TabBar.less) for consistency. */

#bottom-panel-container {
    background-color: @bc-panel-bg;
    border-top: 1px solid @bc-panel-border;
    display: flex;
    flex-direction: column;

    .dark & {
        background-color: @dark-bc-panel-bg;
        border-top: 1px solid @dark-bc-panel-border;
    }

    .bottom-panel {
        display: none !important;
        flex: 1;
        min-height: 0;
        border-top: none;
        height: auto !important;

        &.active-bottom-panel {
            display: flex !important;
            flex-direction: column;
        }

        .toolbar {
            box-shadow: none;
        }

        .resizable-content {
            flex: 1;
            min-height: 0;
            height: auto !important;
        }
    }
}

#bottom-panel-tab-bar {
    display: flex;
    align-items: center;
    height: 2rem;
    min-height: 2rem;
    background-color: #f5f5f5;
    border-bottom: 1px solid #d6d6d6;
    overflow: hidden;
    user-select: none;

    .dark & {
        background-color: #222222;
        border-bottom: 1px solid #333;
    }
}

.bottom-panel-tabs-overflow {
    flex: 1;
    display: flex;
    overflow-x: auto;
    overflow-y: hidden;
    height: 100%;

    /* Hide scrollbar but allow scrolling */
    &::-webkit-scrollbar {
        display: none;
    }
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.bottom-panel-tab {
    display: inline-flex;
    align-items: center;
    padding: 0 0.4rem 0 0.8rem;
    height: 100%;
    cursor: pointer;
    position: relative;
    flex: 0 0 auto;
    min-width: fit-content;
    color: #555;
    background-color: #f1f1f1;
    border-right: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    white-space: nowrap;
    transition: color 0.12s ease-out, background-color 0.12s ease-out;

    .dark & {
        color: #aaa;
        background-color: #292929;
        border-right: 1px solid rgba(255, 255, 255, 0.05);
    }

    &:hover {
        background-color: #e0e0e0;

        .dark & {
            background-color: #3b3a3a;
        }
    }

    &.active {
        color: #333;
        background-color: #fff;

        .dark & {
            color: #dedede;
            background-color: #1D1F21;
        }

        &::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 0.1rem;
            background-color: #0078D7;

            .dark & {
                background-color: #75BEFF;
            }
        }
    }
}

/* SVG icons rendered as masks so they inherit currentColor (works with light/dark themes).
   The mask-image URL is set inline via JS (PanelView.js, DefaultPanelView.js). */
.panel-titlebar-icon {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    vertical-align: middle;
    background-color: currentColor;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-size: contain;
    mask-size: contain;
    pointer-events: none;
}

/* Tab icon: hidden by default, shown when tabs are collapsed */
.bottom-panel-tab-icon {
    display: none;
}

/* Pinned Quick Access tab: icon-only, always visible */
.bottom-panel-tab.bottom-panel-tab-default .bottom-panel-tab-icon {
    display: inline-flex;
    width: 1.1rem;
    height: 1.1rem;
    margin: 0;
}

.default-panel-btn .panel-titlebar-icon {
    width: 20px;
    height: 20px;
}


.bottom-panel-tab-title {
    display: inline-flex;
    align-items: center;
    pointer-events: none;
}

/* Overflow button: shown when tabs overflow even after collapsing to icons */
.bottom-panel-overflow-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.9rem;
    height: 2rem;
    cursor: pointer;
    color: #666;
    font-size: 0.9rem;
    flex: 0 0 auto;
    transition: color 0.12s ease, background-color 0.12s ease;

    .dark & {
        color: #aaa;
    }

    &:hover {
        background-color: #e0e0e0;
        color: #333;

        .dark & {
            background-color: #333;
            color: #eee;
        }
    }

}

/* Drag-and-drop tab reordering */
.bottom-panel-tab-dragging {
    opacity: 0.5;
}

/* Collapsed tab bar: show icons, hide titles for tabs that have icons */
.bottom-panel-tabs-collapsed {
    .bottom-panel-tab-icon {
        display: inline-flex;
    }
    .bottom-panel-tab-icon ~ .bottom-panel-tab-title {
        display: none;
    }
    /* Increase spacing in collapsed mode */
    .bottom-panel-tab {
        padding: 0 0.6rem 0 0.8rem;
    }
    .bottom-panel-tab-close-btn {
        margin-left: 0.8rem;
    }
    /* Fix all collapsed tabs to the same width so the UI doesn't shake
       when switching active tab. The width matches the active tab's
       natural content (icon + close button) using fixed px since the
       icon has a fixed size. */
    .bottom-panel-tab {
        min-width: 63px;
        box-sizing: border-box;
        justify-content: center;
    }
    .bottom-panel-tab:not(.active) .bottom-panel-tab-close-btn {
        display: none;
    }
    /* Pinned Quick Access tab: icon-only, keeps its natural width */
    .bottom-panel-tab.bottom-panel-tab-default {
        min-width: auto;
    }
}

.bottom-panel-tab-close-btn {
    margin-left: 0.55rem;
    border-radius: 3px;
    cursor: pointer;
    color: #999;
    font-size: 1.25rem;
    font-weight: 500;
    padding: 0 4px;
    line-height: 1;
    opacity: 0;
    transition: opacity 0.12s ease, color 0.12s ease, background-color 0.12s ease;

    .dark & {
        color: #666;
    }

    .bottom-panel-tab:hover & {
        opacity: 1;
        color: #666;

        .dark & {
            color: #888;
        }
    }

    .bottom-panel-tab.active & {
        opacity: 1;
        color: #666;

        .dark & {
            color: #888;
        }
    }

    &:hover {
        opacity: 1;
        color: #333;
        background-color: rgba(0, 0, 0, 0.1);

        .dark & {
            color: #fff;
            background-color: rgba(255, 255, 255, 0.12);
        }
    }
}

/* Pinned Quick Access tab: icon-only with separator */
.bottom-panel-tab.bottom-panel-tab-default {
    padding: 0 0.6rem;
    min-width: auto;
    justify-content: center;
    border-right: 1px solid rgba(0, 0, 0, 0.15);
    background-color: transparent;

    .dark & {
        border-right: 1px solid rgba(255, 255, 255, 0.1);
        background-color: transparent;
    }
}

.bottom-panel-tab-bar-actions {
    display: flex;
    align-items: center;
    height: 100%;
    margin-left: auto;
    margin-right: 6px;
    gap: 6px;
    flex: 0 0 auto;
}

.bottom-panel-maximize-btn,
.bottom-panel-hide-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.9rem;
    height: 2rem;
    cursor: pointer;
    color: #666;
    font-size: 0.88rem;
    transition: color 0.12s ease, background-color 0.12s ease;

    .dark & {
        color: #aaa;
    }

    &:hover {
        background-color: #e0e0e0;
        color: #333;

        .dark & {
            background-color: #333;
            color: #eee;
        }
    }
}

.default-panel-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    padding: 16px;
    gap: 12px;
    user-select: none;
    overflow-y: auto;
}

.default-panel-heading {
    font-size: 14px;
    letter-spacing: 0.6px;
    word-spacing: 1px;
    font-weight: 500;
    color: #555;
    margin-top: auto;
    margin-bottom: 4px;
    flex-shrink: 0;

    .dark & {
        color: #bbb;
    }
}

.default-panel-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-bottom: auto;
    flex-shrink: 0;
}

.default-panel-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 120px;
    height: 72px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.03);
    color: #444;
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s;

    i {
        font-size: 20px;
    }

    .default-panel-btn-label {
        font-size: 11px;
        text-align: center;
        line-height: 1.2;
        max-width: 110px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    &:hover {
        background: rgba(0, 0, 0, 0.07);
        border-color: rgba(0, 0, 0, 0.25);
    }

    &:active {
        background: rgba(0, 0, 0, 0.12);
    }

    .dark & {
        border-color: rgba(255, 255, 255, 0.15);
        background: rgba(255, 255, 255, 0.05);
        color: #ccc;

        &:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.3);
        }

        &:active {
            background: rgba(255, 255, 255, 0.15);
        }
    }
}