:root {
    color-scheme: light;
    --bg: #f5f7fb;
    --panel: #ffffff;
    --text: #162033;
    --muted: #667085;
    --line: #d9e1ee;
    --accent: #1d4ed8;
    --accent-soft: #e8f0ff;
    --danger: #b42318;
    --radius: 18px;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { color: inherit; text-decoration: none; }
input, select, textarea, button { font: inherit; }
input, select, textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 10px 12px;
    background: #fff;
}
textarea { resize: vertical; }

.topbar {
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    border-bottom: 1px solid var(--line);
    background: rgba(255,255,255,.86);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand { font-weight: 800; letter-spacing: .02em; }
.topbar nav { display: flex; gap: 18px; color: var(--muted); }
.shell { padding: 28px; }
.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 18px 42px rgba(23, 37, 84, .06);
}
.compact { padding: 22px; }
.hero {
    max-width: 1120px;
    margin: 36px auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 24px;
    align-items: stretch;
}
.hero > div { padding: 56px; background: var(--panel); border-radius: 28px; border: 1px solid var(--line); }
h1, h2 { margin: 0 0 12px; line-height: 1.1; }
h1 { font-size: clamp(36px, 5vw, 64px); }
h2 { font-size: 24px; }
.lead { max-width: 760px; color: var(--muted); font-size: 18px; line-height: 1.6; }
.eyebrow { margin: 0 0 8px; color: var(--accent); text-transform: uppercase; font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 10px 16px;
    background: #fff;
    cursor: pointer;
}
.button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.button.secondary { color: var(--muted); }
.button.danger { color: var(--danger); border-color: #ffd6d2; background: #fff8f7; }
.button.small { padding: 7px 12px; font-size: 14px; }
.muted { color: var(--muted); }
.steps { color: var(--muted); line-height: 2; }
.chat-layout {
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr);
    gap: 22px;
    min-height: calc(100vh - 120px);
}
.sidebar { padding: 18px; align-self: start; position: sticky; top: 86px; }
.sidebar-header, .chat-header, .form-actions { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.stack { display: grid; gap: 10px; margin: 16px 0; }
.conversation-list { display: grid; gap: 8px; max-height: calc(100vh - 300px); overflow: auto; padding-right: 4px; }
.conversation {
    display: grid;
    gap: 4px;
    padding: 12px;
    border: 1px solid transparent;
    border-radius: 14px;
}
.conversation:hover, .conversation.active { background: var(--accent-soft); border-color: #bed2ff; }
.conversation-title { font-weight: 700; }

.chat-title-block { display: grid; gap: 6px; min-width: 0; }
.chat-header-actions { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.chat-header-actions form { margin: 0; }
.conversation-title-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 4px; }
.conversation-title-form input { min-width: min(360px, 100%); }
.conversation-meta, .conversation-preview { color: var(--muted); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-main { padding: 22px; display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.empty-state { max-width: 880px; margin: auto; width: 100%; }
.alert { padding: 12px 14px; border-radius: 14px; background: #fff1f0; color: var(--danger); border: 1px solid #ffd6d2; }
.run-status { display: flex; gap: 10px; flex-wrap: wrap; padding: 12px 14px; border-radius: 14px; background: #f7f8fb; border: 1px solid var(--line); color: var(--muted); }
.run-status.success { background: #ecfdf3; border-color: #abefc6; color: #067647; }
.run-status.danger { background: #fff1f0; border-color: #ffd6d2; color: var(--danger); }
.run-status.info { background: var(--accent-soft); border-color: #bed2ff; color: var(--accent); }
.messages { display: grid; gap: 14px; }
.message { border: 1px solid var(--line); border-radius: 16px; padding: 14px; background: #fff; }
.message.user { margin-left: min(120px, 12%); background: #fbfdff; }
.message.assistant, .message.error { margin-right: min(120px, 12%); }
.message.error { border-color: #ffd6d2; }
.message header { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; color: var(--muted); font-size: 13px; }
.role { font-weight: 800; color: var(--text); text-transform: uppercase; font-size: 12px; }
.status { margin-right: auto; }
.copy-button { border: 0; color: var(--accent); background: transparent; cursor: pointer; }
.message-content {
    margin: 0;
    padding: 0;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    line-height: 1.55;
    background: transparent;
}
.message-error { color: var(--danger); }
.prompt-form { display: grid; gap: 12px; border-top: 1px solid var(--line); padding-top: 18px; }
.prompt-grid { display: grid; grid-template-columns: minmax(0, 1fr) 130px 130px; gap: 10px; }
.prompt-grid span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 13px; }
@media (max-width: 920px) {
    .hero, .chat-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .prompt-grid { grid-template-columns: 1fr; }
}

.run-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.run-actions form { margin: 0; }
.run-status.warning { background: #fffaeb; border-color: #fedf89; color: #b54708; }
.run-status.secondary { background: #f2f4f7; border-color: var(--line); color: var(--muted); }

.markdown-body {
    font-family: inherit;
    line-height: 1.6;
    word-break: break-word;
    overflow-wrap: anywhere;
}
.markdown-body > :first-child { margin-top: 0; }
.markdown-body > :last-child { margin-bottom: 0; }
.markdown-body p { margin: 0 0 10px; }
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 { margin: 16px 0 8px; line-height: 1.25; }
.markdown-body h1 { font-size: 26px; }
.markdown-body h2 { font-size: 22px; }
.markdown-body h3 { font-size: 18px; }
.markdown-body ul,
.markdown-body ol { margin: 8px 0 12px 22px; padding: 0; }
.markdown-body li { margin: 4px 0; }
.markdown-body blockquote {
    margin: 12px 0;
    padding: 10px 14px;
    border-left: 4px solid var(--line);
    background: #f7f8fb;
    color: var(--muted);
    border-radius: 10px;
}
.markdown-body code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    background: #f2f4f7;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 1px 5px;
}
.markdown-body pre.markdown-code {
    margin: 12px 0;
    padding: 12px 14px;
    overflow: auto;
    background: #111827;
    border-radius: 14px;
}
.markdown-body pre.markdown-code code {
    display: block;
    padding: 0;
    border: 0;
    background: transparent;
    color: #f9fafb;
    white-space: pre;
}
.markdown-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.markdown-body hr { border: 0; border-top: 1px solid var(--line); margin: 14px 0; }
.markdown-table-wrap { overflow-x: auto; margin: 12px 0; }
.markdown-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.markdown-table th,
.markdown-table td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.markdown-table th { background: #f7f8fb; font-weight: 700; }
.markdown-task { display: inline-flex; gap: 8px; align-items: flex-start; }
.markdown-task input { width: auto; margin-top: 4px; }
.markdown-empty { color: var(--muted); }
.message-content.markdown-body { white-space: normal; font-family: inherit; }


.markdown-code-shell {
    position: relative;
    margin: 12px 0;
}
.markdown-code-shell pre.markdown-code { margin: 0; padding-top: 42px; }
.markdown-code-copy {
    position: absolute;
    top: 8px;
    right: 8px;
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 999px;
    padding: 5px 10px;
    background: rgba(17, 24, 39, .92);
    color: #f9fafb;
    cursor: pointer;
    font-size: 12px;
    z-index: 1;
}
.markdown-code-copy:hover { background: rgba(31, 41, 55, .98); }

.auth-card {
    max-width: 520px;
    margin: 48px auto;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
}

.topbar nav {
    display: flex;
    gap: 12px;
    flex: 1;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-badge {
    color: var(--muted);
    font-size: 0.9rem;
}

.inline-form {
    display: inline;
    margin: 0;
}

.link-button {
    background: transparent;
    border: 0;
    color: var(--link, #2563eb);
    cursor: pointer;
    font: inherit;
    padding: 0;
}

.link-button:hover {
    text-decoration: underline;
}

/* Developer mode shell */
.developer-shell {
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr);
    min-height: calc(100vh - 120px);
    overflow: hidden;
}

.developer-sidebar {
    border-right: 1px solid var(--line);
    background: #fbfcff;
    padding: 18px;
    min-width: 0;
}

.developer-sidebar-header,
.developer-hero,
.section-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.developer-sidebar-header h1,
.developer-hero h2,
.section-heading h3 {
    margin: 0;
}

.developer-sidebar-header h1 { font-size: 26px; }
.developer-hero h2 { font-size: clamp(30px, 4vw, 48px); }
.section-heading h3 { font-size: 22px; }

.developer-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    margin: 18px 0;
}

.compact-actions .button {
    width: 100%;
}

.solution-tree,
.tree-branch {
    display: grid;
    gap: 6px;
}

.solution-tree {
    max-height: calc(100vh - 250px);
    overflow: auto;
    padding-right: 4px;
}

.solution-node,
.tree-folder {
    border-radius: 14px;
}

.solution-node > summary,
.tree-folder > summary,
.tree-file {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    padding: 8px 10px;
    border-radius: 12px;
    cursor: pointer;
}

.solution-node > summary::-webkit-details-marker,
.tree-folder > summary::-webkit-details-marker {
    display: none;
}

.solution-node.selected > summary,
.tree-file.selected,
.tree-file:hover,
.solution-node > summary:hover,
.tree-folder > summary:hover {
    background: var(--accent-soft);
}

.tree-branch {
    margin-left: 16px;
}

.tree-title,
.tree-file span:last-child {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tree-meta {
    margin-left: auto;
    color: var(--muted);
    font-size: 12px;
}

.tree-caret,
.project-icon {
    color: var(--accent);
    flex: 0 0 auto;
}

.developer-workspace {
    min-width: 0;
    padding: 24px;
    overflow: auto;
    display: grid;
    align-content: start;
    gap: 18px;
}

.developer-hero {
    padding-bottom: 6px;
}

.developer-hero .lead {
    margin-bottom: 0;
}

.developer-hero-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.developer-notice {
    border: 1px solid #bed2ff;
    background: var(--accent-soft);
    color: var(--accent);
    border-radius: 16px;
    padding: 14px 16px;
    line-height: 1.5;
}

.developer-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
}

.developer-tabs a {
    display: inline-flex;
    white-space: nowrap;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px 12px;
    background: #fff;
    color: var(--muted);
}

.developer-tabs a.active,
.developer-tabs a:hover {
    border-color: #bed2ff;
    background: var(--accent-soft);
    color: var(--accent);
}

.developer-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.developer-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 18px;
}

.metric-card {
    display: grid;
    gap: 8px;
}

.metric-value {
    font-size: 34px;
    line-height: 1;
    font-weight: 800;
}

.metric-label {
    color: var(--text);
    font-weight: 700;
}

.metric-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}

.developer-section {
    display: grid;
    gap: 16px;
}

.responsive-table {
    overflow-x: auto;
}

.developer-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

.developer-table th,
.developer-table td {
    border-bottom: 1px solid var(--line);
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
}

.developer-table th {
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 9px;
    font-size: 12px;
    font-weight: 700;
    color: var(--muted);
    background: #f2f4f7;
    border: 1px solid var(--line);
}

.status-pill.ready {
    color: #067647;
    background: #ecfdf3;
    border-color: #abefc6;
}

.status-pill.planned {
    color: #b54708;
    background: #fffaeb;
    border-color: #fedf89;
}

.file-preview-grid {
    display: grid;
    grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
    gap: 16px;
}

.file-tree-preview,
.file-empty-state {
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fbfcff;
    padding: 14px;
}

.file-tree-line {
    display: flex;
    gap: 8px;
    padding: 5px 0;
    color: var(--text);
}

.file-tree-line.depth-1 { padding-left: 18px; }
.file-tree-line.depth-2 { padding-left: 36px; color: var(--muted); }

.file-empty-state h4 {
    margin: 0 0 8px;
    font-size: 18px;
}

.file-empty-state p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}

.placeholder-list {
    display: grid;
    gap: 10px;
}

.placeholder-list > div {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 12px 14px;
    background: #fbfcff;
}

.placeholder-list span {
    color: var(--muted);
}

@media (max-width: 1100px) {
    .developer-shell {
        grid-template-columns: 1fr;
    }

    .developer-sidebar {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .solution-tree {
        max-height: 340px;
    }

    .developer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .developer-grid,
    .file-preview-grid {
        grid-template-columns: 1fr;
    }

    .developer-sidebar-header,
    .developer-hero,
    .section-heading,
    .placeholder-list > div {
        flex-direction: column;
        align-items: stretch;
    }

    .developer-hero-actions {
        justify-content: flex-start;
    }
}

.developer-sidebar-empty,
.tree-empty,
.developer-empty-state {
    border: 1px dashed var(--line);
    border-radius: 14px;
    background: #fff;
    color: var(--muted);
    padding: 12px;
    line-height: 1.5;
}

.developer-sidebar-empty {
    display: grid;
    gap: 4px;
}

.tree-empty {
    margin: 2px 0 2px 18px;
    padding: 7px 10px;
    font-size: 13px;
}

.developer-notice.warning {
    border-color: #fedf89;
    background: #fffaeb;
    color: #b54708;
}

.solution-card {
    display: grid;
    gap: 16px;
}

.developer-definition-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin: 0;
}

.developer-definition-grid div {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fbfcff;
    padding: 12px;
}

.developer-definition-grid dt {
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 5px;
}

.developer-definition-grid dd {
    margin: 0;
    font-weight: 700;
    overflow-wrap: anywhere;
}

.developer-empty-state h4 {
    margin: 0 0 8px;
    font-size: 18px;
    color: var(--text);
}

.developer-empty-state p {
    margin: 0;
}

@media (max-width: 920px) {
    .developer-definition-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .developer-definition-grid {
        grid-template-columns: 1fr;
    }
}

/* Stage A276: Visual Studio-like solution explorer */
.vs-tree,
.solution-explorer-panel {
    display: grid;
    gap: 2px;
    min-width: 0;
}

.solution-explorer-panel {
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fbfcff;
    padding: 12px;
    overflow: auto;
    max-height: 520px;
}

.compact-vs-tree {
    gap: 1px;
}

.vs-tree-row {
    display: flex;
    align-items: center;
    gap: 7px;
    min-width: 0;
    border-radius: 10px;
    padding: 6px 8px;
    color: var(--text);
    line-height: 1.25;
}

.vs-tree-row:hover {
    background: var(--accent-soft);
}

.vs-tree-row.depth-0 { padding-left: 8px; }
.vs-tree-row.depth-1 { padding-left: 24px; }
.vs-tree-row.depth-2 { padding-left: 42px; }
.vs-tree-row.depth-3 { padding-left: 60px; }
.vs-tree-row.depth-4 { padding-left: 78px; }
.vs-tree-row.depth-5 { padding-left: 96px; }
.vs-tree-row.depth-6 { padding-left: 114px; }

.vs-tree-icon {
    flex: 0 0 auto;
    width: 18px;
    text-align: center;
    color: var(--accent);
    font-size: 13px;
}

.vs-tree-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.vs-tree-meta {
    margin-left: auto;
    flex: 0 0 auto;
    color: var(--muted);
    font-size: 12px;
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.vs-tree-row.kind-solution {
    font-weight: 800;
}

.vs-tree-row.kind-folder .vs-tree-name,
.vs-tree-row.kind-source-project .vs-tree-name {
    font-weight: 700;
}

.vs-tree-row.kind-file {
    color: var(--muted);
}

.vs-tree-row.sensitive,
.vs-tree-row.kind-placeholder {
    color: #b54708;
}

.vs-tree-row.sensitive .vs-tree-icon,
.vs-tree-row.kind-placeholder .vs-tree-icon {
    color: #b54708;
}

.file-tree-panel {
    max-height: 420px;
}

.compact-empty {
    padding: 10px;
}

@media (max-width: 720px) {
    .solution-explorer-panel {
        max-height: 360px;
    }

    .vs-tree-meta {
        display: none;
    }
}

/* Stage A277: empty solution creation wizard */
.developer-notice.success {
    border-color: #abefc6;
    background: #ecfdf3;
    color: #067647;
}

.wizard-layout {
    display: grid;
    grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

.wizard-steps {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.wizard-steps li {
    display: grid;
    gap: 4px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fbfcff;
    padding: 12px 14px;
}

.wizard-steps span,
.developer-form small {
    color: var(--muted);
    line-height: 1.45;
}

.developer-form {
    display: grid;
    gap: 14px;
}

.developer-form label {
    display: grid;
    gap: 6px;
    font-weight: 700;
}

.developer-form label > input,
.developer-form label > textarea {
    font-weight: 400;
}

.field-validation {
    color: var(--danger);
    font-size: 13px;
    min-height: 1em;
}

.validation-alert:empty {
    display: none;
}

.button[disabled],
input[disabled],
textarea[disabled] {
    cursor: not-allowed;
    opacity: .68;
}

@media (max-width: 820px) {
    .wizard-layout {
        grid-template-columns: 1fr;
    }
}

/* Stage A278: developer archive upload wizard */
.developer-form label > select,
.developer-form label > input[type="file"] {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    color: var(--text);
    padding: 10px 12px;
    font-weight: 400;
}

.developer-form label > select:disabled,
.developer-form label > input[type="file"]:disabled {
    cursor: not-allowed;
    opacity: .68;
}

.upload-result-card {
    display: grid;
    gap: 12px;
    border: 1px solid #abefc6;
    border-radius: 16px;
    background: #ecfdf3;
    padding: 14px;
}

.upload-result-card h4 {
    margin: 0;
    color: #067647;
}

.compact-definition-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.upload-warning-list {
    display: grid;
    gap: 6px;
    margin: 0;
    padding-left: 18px;
    color: #b54708;
}

.upload-warning-list code,
.upload-result-card code {
    overflow-wrap: anywhere;
}

@media (max-width: 620px) {
    .compact-definition-grid {
        grid-template-columns: 1fr;
    }
}

/* Stage A279: developer archive import preview/confirm */
.import-preview-card {
    background: #f8fafc;
    border-color: var(--line);
}

.compact-heading {
    margin-bottom: 0;
}

.import-preview-subsection {
    display: grid;
    gap: 8px;
}

.import-preview-subsection h5 {
    margin: 0;
    color: var(--text);
}

.compact-list {
    display: grid;
    gap: 6px;
    margin: 0;
    padding-left: 18px;
}

.compact-list code,
.compact-table code {
    overflow-wrap: anywhere;
}

.compact-table th,
.compact-table td {
    padding: 8px 10px;
}

.compact-confirm-form {
    border-top: 1px solid var(--line);
    padding-top: 12px;
}

/* Stage A280: developer read-only text file preview */
.file-content-panel {
    display: grid;
    gap: 12px;
    min-width: 0;
}

.file-content-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fbfcff;
    padding: 14px;
}

.file-content-header h4 {
    margin: 0 0 6px;
    font-size: 18px;
}

.file-content-header code,
.file-meta-grid dd {
    overflow-wrap: anywhere;
}

.file-meta-grid {
    margin: 0;
}

.file-content-pre {
    margin: 0;
    max-height: 620px;
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #0f172a;
    color: #e5e7eb;
    padding: 16px;
    line-height: 1.5;
    font-size: 13px;
    tab-size: 4;
}

.file-content-pre code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    white-space: pre;
}

@media (max-width: 720px) {
    .file-content-header {
        flex-direction: column;
    }

    .file-content-pre {
        max-height: 420px;
    }
}

/* Stage A281: developer AI task creation form */
.developer-form-grid {
    display: grid;
    gap: 12px;
}

.developer-form-grid.two-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.developer-form-grid.three-columns {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.checkbox-label {
    display: flex !important;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 10px !important;
    font-weight: 700;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
}

.ai-task-form {
    min-width: 0;
}

.ai-task-result-card {
    background: #f8fafc;
    border-color: var(--line);
}

.remaining-task-list {
    grid-column: 1 / -1;
}

@media (max-width: 720px) {
    .developer-form-grid.two-columns,
    .developer-form-grid.three-columns {
        grid-template-columns: 1fr;
    }
}

/* Stage A282: developer linked tasks/changesets overview */
.button.small {
    padding: 6px 10px;
    font-size: 12px;
}

.work-items-summary-card {
    display: grid;
    gap: 12px;
    grid-column: 1 / -1;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fbfcff;
    padding: 14px;
}

.work-items-table {
    min-width: 980px;
}

.work-items-table td small,
.work-items-table th small {
    display: block;
    color: var(--muted);
    margin-top: 4px;
    line-height: 1.35;
}

.warning-text {
    color: #b54708;
    overflow-wrap: anywhere;
}

/* Stage A284: developer UI protection for sensitive/large/binary file preview */
.vs-tree-row.preview-blocked {
    cursor: not-allowed;
    user-select: none;
    opacity: .86;
}

.vs-tree-row.preview-blocked:hover {
    background: #fffaeb;
}

.vs-tree-row.preview-sensitive,
.vs-tree-row.preview-large,
.vs-tree-row.preview-binary,
.vs-tree-row.preview-warning {
    color: #b54708;
}

.vs-tree-row.preview-sensitive .vs-tree-icon,
.vs-tree-row.preview-large .vs-tree-icon,
.vs-tree-row.preview-binary .vs-tree-icon,
.vs-tree-row.preview-warning .vs-tree-icon {
    color: #b54708;
}

.vs-tree-row.preview-binary .vs-tree-meta,
.vs-tree-row.preview-large .vs-tree-meta,
.vs-tree-row.preview-sensitive .vs-tree-meta {
    border: 1px solid #fedf89;
    border-radius: 999px;
    background: #fffaeb;
    color: #b54708;
    padding: 2px 7px;
}

.file-protection-summary {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    border: 1px solid #fedf89;
    border-radius: 16px;
    background: #fffaeb;
    color: #713b12;
    padding: 14px;
    margin-bottom: 12px;
}

.file-protection-summary p {
    margin: 4px 0 0;
    color: #8a4b13;
    line-height: 1.45;
}

.file-protection-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.file-protection-list > span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    max-width: 100%;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: #fff;
    padding: 6px 10px;
}

.file-protection-list code {
    max-width: 320px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-protection-list small {
    color: #b54708;
    font-weight: 700;
}

@media (max-width: 720px) {
    .file-protection-summary {
        flex-direction: column;
    }

    .file-protection-list code {
        max-width: 220px;
    }
}

/* Stage A285: developer empty/error/loading state coverage */
.developer-state-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin: 12px 0 16px;
}

.developer-state-card {
    display: grid;
    gap: 6px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fbfcff;
    color: var(--text);
    padding: 12px;
    min-width: 0;
}

.developer-state-card:hover {
    background: var(--accent-soft);
}

.developer-state-card small {
    color: var(--muted);
    line-height: 1.4;
}

.developer-state-card.error,
.developer-error-state {
    border-color: #fecdca;
    background: #fffbfa;
    color: #b42318;
}

.developer-state-card.blocked {
    border-color: #fedf89;
    background: #fffaeb;
}

.developer-state-card.empty {
    border-style: dashed;
}

.status-pill.error {
    color: #b42318;
    background: #fef3f2;
    border-color: #fecdca;
}

.status-pill.empty {
    color: var(--muted);
    background: #f8fafc;
    border-color: var(--line);
}

.status-pill.blocked {
    color: #b54708;
    background: #fffaeb;
    border-color: #fedf89;
}

.developer-error-state {
    border: 1px solid #fecdca;
    border-radius: 14px;
    padding: 12px;
    line-height: 1.5;
}

.developer-error-state h4 {
    margin: 0 0 8px;
    font-size: 18px;
    color: #b42318;
}

.developer-error-state p {
    margin: 0;
    color: #912018;
}

.compact-error {
    padding: 10px;
}

.developer-loading-state {
    display: none;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fbfcff;
    color: var(--muted);
    padding: 10px 12px;
}

form[data-submit-in-progress="true"] .developer-loading-state {
    display: flex;
}

.loading-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--accent);
    animation: developer-loading-pulse 1s ease-in-out infinite;
}

@keyframes developer-loading-pulse {
    0%, 100% { opacity: .35; transform: scale(.9); }
    50% { opacity: 1; transform: scale(1.15); }
}

.button.is-loading,
a[data-developer-download="true"][aria-busy="true"] {
    cursor: progress;
    opacity: .72;
}

@media (max-width: 980px) {
    .developer-state-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .developer-state-strip {
        grid-template-columns: 1fr;
    }
}