/* Bottom-docked terminal for user-owned, SSH-backed ACP models. */

.acp-terminal-toggle.active {
    color: var(--primary-color);
    background: color-mix(in srgb, var(--primary-color) 18%, transparent);
}

.acp-terminal-toggle[hidden] {
    /*
     * The shared main-header button rule sets display:flex, which otherwise
     * overrides the browser's built-in [hidden] display:none declaration.
     */
    display: none !important;
}

.acp-terminal-panel {
    display: flex;
    flex: 0 0 auto;
    flex-direction: column;
    width: 100%;
    height: 0;
    min-height: 0;
    max-height: 70dvh;
    background: var(--background);
    border-top: 0 solid transparent;
    overflow: hidden;
    position: relative;
    visibility: hidden;
    pointer-events: none;
    opacity: 0;
    transform: translateY(24px);
    transition:
        height 280ms cubic-bezier(0.32, 0.72, 0, 1),
        transform 280ms cubic-bezier(0.32, 0.72, 0, 1),
        opacity 180ms ease,
        border-top-width 180ms ease,
        border-top-color 180ms ease,
        visibility 0s linear 280ms;
    will-change: height, transform, opacity;
}

.acp-terminal-panel.is-open {
    height: var(--acp-terminal-target-height, min(38dvh, 360px));
    visibility: visible;
    pointer-events: auto;
    opacity: 1;
    transform: translateY(0);
    border-top-width: 1px;
    border-top-color: var(--border-color);
    transition-delay: 0s;
}

.acp-terminal-panel.is-closing {
    /*
     * Keep the last terminal frame visible while height collapses. JavaScript
     * disposes xterm only after this transition has completed.
     */
    visibility: visible;
    pointer-events: none;
}

.acp-terminal-panel.is-resizing {
    /*
     * Pointer dragging must track the hand directly; open/close and keyboard
     * height changes retain the smooth transition.
     */
    transition: none;
}

.acp-terminal-panel.is-open .acp-terminal-toolbar,
.acp-terminal-panel.is-open .acp-terminal-host {
    animation: acp-terminal-content-reveal 220ms cubic-bezier(0.32, 0.72, 0, 1) both;
}

.chat-container.acp-terminal-is-open {
    overflow: hidden;
}

.chat-container.acp-terminal-is-open > .chat-container-main {
    /*
     * The terminal is a sibling below the main viewport. Allow the main region
     * to consume exactly the remaining parent height as the terminal animates,
     * instead of retaining its normal full-viewport minimum height.
     */
    flex: 1 1 0;
    min-height: 0;
    max-height: none;
    overflow: hidden;
}

.chat-container.acp-terminal-is-open > .chat-container-main > .chat-area,
.chat-container.acp-terminal-is-open > .chat-container-main > .split-screen-wrapper {
    min-height: 0;
}

.chat-container.acp-terminal-fullscreen > .chat-container-main {
    /*
     * The panel's animated 100% height naturally collapses this flexible
     * sibling. Removing the remaining border lets the terminal use every pixel
     * of the chat workspace below the application header.
     */
    border-top-width: 0;
}

.chat-container.acp-terminal-fullscreen > .acp-terminal-panel.is-open {
    height: 100%;
    max-height: none;
}

.chat-container.acp-terminal-fullscreen .acp-terminal-resize-handle {
    /*
     * A full-workspace panel cannot be resized. JavaScript also removes this
     * separator from the tab order until the normal panel size is restored.
     */
    visibility: hidden;
    pointer-events: none;
}

.acp-terminal-resize-handle {
    position: absolute;
    z-index: 2;
    top: -4px;
    left: 0;
    width: 100%;
    height: 9px;
    cursor: row-resize;
    touch-action: none;
}

.acp-terminal-resize-handle::after {
    content: "";
    position: absolute;
    top: 3px;
    left: calc(50% - 24px);
    width: 48px;
    height: 3px;
    border-radius: 999px;
    background: var(--border-color);
}

.acp-terminal-resize-handle:focus-visible::after {
    background: var(--primary-color);
}

.acp-terminal-toolbar {
    display: flex;
    align-items: center;
    min-height: 38px;
    padding: 0 8px 0 12px;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.acp-terminal-tab {
    display: flex;
    align-items: center;
    min-width: 0;
    gap: 7px;
    font-size: 13px;
    font-weight: 600;
}

.acp-terminal-tab-icon,
.acp-terminal-tab-icon svg,
.acp-terminal-action svg {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
}

.acp-terminal-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.acp-terminal-status {
    min-width: 0;
    margin-inline-start: auto;
    color: var(--text-color-secondary);
    font-size: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.acp-terminal-status.is-connected {
    color: var(--success-color, var(--primary-color));
}

.acp-terminal-status.is-error {
    color: var(--error-color, var(--danger-color));
}

.acp-terminal-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    color: var(--text-color-secondary);
}

@media (hover: hover) and (pointer: fine) {
    .acp-terminal-action:hover {
        color: var(--text-color);
        background: var(--hover);
    }
}

.acp-terminal-host {
    /*
     * Keep terminal metrics independent from ChatUI's application font. Courier
     * New leaves unusually large side bearings on macOS and made normal terminal
     * output look as though spaces had been inserted between every character.
     */
    --acp-terminal-font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    flex: 1;
    min-height: 0;
    padding: 8px 10px 6px;
    background: var(--background);
    overflow: hidden;
}

.acp-terminal-host .xterm,
.acp-terminal-host .xterm * {
    /*
     * ChatUI intentionally applies its UI font and border-box sizing globally.
     * Reset both inside xterm because its character measurement and renderer
     * must use identical, unmodified typography and content-box dimensions.
     */
    box-sizing: content-box;
    font-family: var(--acp-terminal-font-family);
    font-kerning: none;
    font-variant-ligatures: none;
    font-feature-settings: "liga" 0, "calt" 0;
    letter-spacing: 0;
    word-spacing: 0;
}

.acp-terminal-host .xterm,
.acp-terminal-host .xterm-viewport {
    height: 100%;
}

.acp-terminal-host .xterm-viewport {
    scrollbar-color: var(--text-color-tertiary) transparent;
}

@media (max-width: 700px) {
    .acp-terminal-panel.is-open {
        height: var(--acp-terminal-target-height, min(44dvh, 360px));
        max-height: 75dvh;
    }

    .acp-terminal-toolbar {
        padding-inline: 8px;
    }
}

[data-reduce-animations="true"] .acp-terminal-panel {
    transition: none;
    transform: none;
}

[data-reduce-animations="true"] .acp-terminal-panel.is-open .acp-terminal-toolbar,
[data-reduce-animations="true"] .acp-terminal-panel.is-open .acp-terminal-host {
    animation: none;
}

@media (prefers-reduced-motion: reduce) {
    html:not([data-reduce-animations="false"]) .acp-terminal-panel {
        transition: none;
        transform: none;
    }

    html:not([data-reduce-animations="false"]) .acp-terminal-panel.is-open .acp-terminal-toolbar,
    html:not([data-reduce-animations="false"]) .acp-terminal-panel.is-open .acp-terminal-host {
        animation: none;
    }
}