/* Lessons 4.2 (title-hover) and 5.2 (ai). The 4.2 settings window is the shared mock
   (demos/settings.css, .set-*); .xs-* adds its scrollbar, .xa-* the coding-agent terminal and
   the restyled fences. */

/* settings page scrollbar: main::-webkit-scrollbar 12 px, thumb #0000005c inside a 4 px border */
.xs-thumb { right: 4px; top: 0; width: 4px; border-radius: 2px; background: rgba(0, 0, 0, .36) }

/* ---------- coding-agent terminal (5.2) ---------- */

.xa-term {
    left: 0;
    top: 0;
    overflow: hidden;
    border-radius: 9px;
    background: #0b172d;
    color: #d7e0f2;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, .07), 0 0 0 1.5px rgba(10, 16, 34, .5), 0 18px 42px rgba(22, 26, 64, .34);
}

.xa-bar { left: 0; right: 0; top: 0; height: 30px; background: #101f3a }

.xa-tab {
    left: 8px;
    top: 5px;
    height: 25px;
    padding: 0 14px 0 30px;
    border-radius: 6px 6px 0 0;
    background: #0b172d;
    color: #c9d4ea;
    font-size: 11.5px;
    line-height: 25px;
    white-space: nowrap;
}

.xa-tab svg { left: 11px; top: 7px; width: 12px; height: 12px }
.xa-btns { right: 0; top: 0; width: 108px; height: 30px }
.xa-btns svg { top: 10px; width: 10px; height: 10px; overflow: visible }

.xa-view { left: 16px; right: 14px; top: 42px; overflow: hidden }
.xa-log { left: 0; right: 0; top: 0 }
.stage-inner .xa-log * { position: relative }

.xa-turn {
    display: block;
    margin: 0 0 10px;
    color: #eef2fb;
    font-size: 12.5px;
    line-height: 1.6;
}

.xa-turn.agent { margin: 2px 0 0; color: #c9d4ea }

.xa-who {
    display: inline-block;
    min-width: 38px;
    margin-right: 8px;
    padding: 0 7px;
    border-radius: 999px;
    background: #1c2d4d;
    color: #9db4e6;
    font-size: 10.5px;
    font-weight: 600;
    line-height: 18px;
    letter-spacing: .04em;
    text-align: center;
    vertical-align: 1px;
}

.xa-cmd {
    display: grid;
    grid-template-columns: 14px minmax(0, 1fr);
    column-gap: 8px;
    margin: 0 0 7px;
}

.xa-ic { width: 14px; height: 14px; margin-top: 2px }

.stage-inner .xa-ic > * { position: absolute; left: 0; top: 0 }

.xa-spin {
    width: 12px;
    height: 12px;
    margin: 1px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, .16);
    border-top-color: #9fb4ff;
}

.xa-ok { width: 14px; height: 14px }

.xa-line {
    color: #e6ebff;
    font: 400 11.5px/1.5 "Cascadia Code", "Cascadia Mono", Consolas, "Microsoft YaHei UI", monospace;
    overflow-wrap: anywhere;
}

.xa-bin { color: #8fa8ff }

.xa-res {
    grid-column: 2;
    overflow: hidden;
    color: #79d6a8;
    font: 400 10.5px/1.5 "Cascadia Code", "Cascadia Mono", Consolas, "Microsoft YaHei UI", monospace;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.xa-input {
    left: 14px;
    right: 14px;
    bottom: 12px;
    min-height: 36px;
    padding: 8px 12px 8px 28px;
    border-radius: 8px;
    background: #12223f;
    box-shadow: inset 0 0 0 1px #24375c;
    color: #eef2fb;
    font-size: 12.5px;
    line-height: 20px;
}

.xa-input.focus { box-shadow: inset 0 0 0 1px #4d6bb3 }
.stage-inner .xa-input span { position: static }
.xa-gt { left: 12px; top: 8px; color: #6f8cff; font: 600 12.5px/20px "Cascadia Code", Consolas, monospace }

.xa-caret {
    display: inline-block;
    width: 1.5px;
    height: 15px;
    margin-left: 1px;
    vertical-align: -3px;
    background: #9fb4ff;
}

.keys.xa-keys { left: 20px; right: auto; width: 404px; top: 176px; bottom: auto }

/* fences re-themed live: the demo sets these per frame */
.xa-fence { color: var(--xa-ink, #1b2133) }
.xa-fence .ico span { text-shadow: var(--xa-halo, 0 0 6px rgba(255, 255, 255, .7)) }

/* side column: command names */
[data-lesson="ai"] .side code {
    padding: 1px 5px;
    border-radius: 5px;
    background: #eef1f8;
    color: var(--ink);
    font: 500 13px/1.4 "Cascadia Code", "Cascadia Mono", Consolas, monospace;
    overflow-wrap: anywhere;
}

.xa-view {
    -webkit-mask-image: linear-gradient(to bottom, transparent, #000 10px);
    mask-image: linear-gradient(to bottom, transparent, #000 10px);
}

/* side column: the example request with a copy button (sits like .tip, in the lesson's blue) */
.xa-prompt {
    margin-top: 22px;
    padding: 14px 18px 15px;
    border-radius: 12px;
    background: #f1f4fd;
    box-shadow: inset 0 0 0 1px #dde3f7;
}

.xa-prompt-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 6px;
}

.xa-prompt h3 { margin: 0; color: var(--accent); font-size: 14px }

.xa-prompt p {
    margin: 0;
    color: var(--ink);
    font-size: 14.5px;
    line-height: 1.7;
}

.xa-copy {
    flex: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px 3px 8px;
    border: 0;
    border-radius: 7px;
    background: #fff;
    box-shadow: 0 0 0 1px #d5dcf2, 0 1px 2px rgba(25, 36, 58, .06);
    color: var(--accent);
    font: 600 13px/20px var(--font);
    cursor: pointer;
}

.xa-copy svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.3 }
.xa-copy:hover { background: #f8f9fe }
.xa-copy:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px }
.xa-copy.done { color: #2e8a5e; box-shadow: 0 0 0 1px #bfe3cf }