/* ============================================================
   Content
   ============================================================ */
.content {
    flex: 1;
    min-width: 0;
    display: flex; flex-direction: column;
    background: var(--view-bg);
    overflow: hidden;
}
.tabbar {
    display: flex; align-items: stretch;
    background: var(--headerbar-bg-backdrop);
    border-bottom: 1px solid var(--border);
    height: 36px; min-height: 36px;
    overflow-x: auto;
    overflow-y: hidden;
    flex-shrink: 0;
    scrollbar-width: thin;
}
.tabbar::-webkit-scrollbar { height: 3px; }
.tab {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 0 8px 0 14px;
    height: 100%;
    font-size: 13px;
    color: var(--fg-dim);
    background: transparent;
    border: none;
    border-right: 1px solid var(--border);
    cursor: pointer;
    white-space: nowrap;
    transition: background 120ms;
    position: relative;
    flex-shrink: 0;
}
.tab:hover { background: var(--card-shade); }
.tab.active {
    background: var(--view-bg);
    color: var(--fg);
    font-weight: 600;
}
.tab.active::after {
    content: ''; position: absolute;
    left: 0; right: 0; top: 0;
    height: 2px;
    background: var(--accent);
}
.tab-close {
    width: 22px; height: 22px;
    border: none; background: transparent;
    border-radius: 4px; cursor: pointer;
    color: var(--fg-dim);
    display: inline-flex; align-items: center; justify-content: center;
    opacity: 0.6;
}
.tab-close:hover { background: var(--border); opacity: 1; }
.tab-close svg { width: 10px; height: 10px; }
.tab-empty {
    padding: 0 14px;
    color: var(--fg-mute);
    font-size: 12px;
    font-style: italic;
    display: inline-flex; align-items: center;
}

.content-toolbar {
    display: flex; align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--headerbar-bg-backdrop);
    border-bottom: 1px solid var(--border);
    height: 40px; min-height: 40px;
    flex-shrink: 0;
}
.toolbar-breadcrumb {
    font-size: 12px;
    color: var(--fg-mute);
    font-family: var(--font-mono);
    padding: 0 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
}
.toolbar-breadcrumb .crumb-sep { color: var(--fg-mute); margin: 0 4px; }
.toolbar-breadcrumb .crumb-file { color: var(--fg); font-weight: 600; }

.editor-area {
    flex: 1;
    display: flex; flex-direction: column;
    min-height: 0;
    overflow: hidden;
}
.editor-wrap {
    position: relative;
    background: var(--view-bg);
    overflow: hidden;
    display: flex;
    flex: 1;
    min-height: 0;
}
.line-numbers {
    padding: 14px 10px 14px 14px;
    text-align: right;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--fg-mute);
    background: var(--view-bg);
    border-right: 1px solid var(--border);
    user-select: none;
    overflow: hidden;
    white-space: pre;
    min-width: 50px;
    line-height: 1.55;
    flex-shrink: 0;
}
.editor-inner {
    position: relative;
    flex: 1;
    min-width: 0;
    overflow: hidden;
}
.highlight-overlay, .code-editor {
    position: absolute;
    inset: 0;
    padding: 14px 16px;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.55;
    tab-size: 4;
    white-space: pre;
    overflow: auto;
    border: none;
}
.highlight-overlay {
    pointer-events: none;
    color: var(--fg);
    background: transparent;
    display: none;
}
.editor-inner.highlighted .highlight-overlay { display: block; }
.editor-inner.highlighted .code-editor {
    color: transparent;
    caret-color: var(--fg);
    background: transparent;
}
.code-editor {
    color: var(--fg);
    background: transparent;
    outline: none;
    resize: none;
}
.code-editor::selection { background: var(--accent-soft); }

.h-tag       { color: var(--h-tag); }
.h-tag-punct { color: var(--h-tag-punct); }
.h-attr      { color: var(--h-attr); }
.h-string    { color: var(--h-string); }
.h-doctype   { color: var(--h-doctype); font-weight: 600; }
.h-comment   { color: var(--h-comment); font-style: italic; }
.h-keyword   { color: var(--h-keyword); font-weight: 600; }
.h-number    { color: var(--h-number); }
.h-func      { color: var(--h-func); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 10px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: var(--fg-mute); background-clip: padding-box; border: 2px solid transparent; }

.editor-empty {
    flex: 1;
    display: grid; place-items: center;
    padding: 40px;
    text-align: center;
    color: var(--fg-mute);
}
.editor-empty .ee-title { font-size: 18px; font-weight: 600; color: var(--fg-dim); margin-bottom: 8px; }
.editor-empty .ee-desc { font-size: 13px; max-width: 380px; line-height: 1.6; }

/* ============================================================
   Output panel
   ============================================================ */
.output-panel {
    height: 260px;
    min-height: 120px;
    max-height: 85%;
    position: relative;
    background: var(--view-bg);
    display: flex; flex-direction: column;
    flex-shrink: 0;
    overflow: hidden;
    border-top: 1px solid var(--border);
}
.resize-handle {
    position: absolute;
    top: -5px;
    left: 0;
    right: 0;
    height: 10px;
    background: transparent;
    cursor: ns-resize;
    z-index: 5;
    touch-action: none;
}
/* Wider grab strip (mirrors .main-resize-handle::before). */
.resize-handle::before {
    content: '';
    position: absolute;
    left: 0; right: 0;
    top: 0; bottom: 0;
    background: transparent;
}
/* Painted line: centered in handle; same --resize-line-thickness as sidebar. */
.resize-handle::after {
    content: '';
    position: absolute;
    left: 0; right: 0;
    top: 50%;
    height: var(--resize-line-thickness);
    transform: translateY(-50%);
    background: var(--resize-line-idle);
    transition: background 120ms;
    pointer-events: none;
}
.resize-handle:hover::after,
.layout-resizing-output .resize-handle::after { background: var(--resize-line-hover); }

@media (prefers-contrast: more) {
    .resize-handle::after {
        height: var(--resize-line-thickness-hc);
    }
    .resize-handle:hover::after,
    .layout-resizing-output .resize-handle::after {
        background: var(--fg);
    }
}
.output-header {
    padding: 6px 12px;
    background: var(--headerbar-bg-backdrop);
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    color: var(--fg-dim);
    font-weight: 600;
    display: flex; align-items: center; gap: 8px;
    height: 34px; min-height: 34px;
    flex-shrink: 0;
}
.output-tabs { display: flex; gap: 2px; }
.output-tab {
    padding: 4px 10px;
    border-radius: var(--radius-button);
    cursor: pointer;
    font-size: 12px;
    color: var(--fg-dim);
    background: transparent;
    border: none;
    min-height: 26px;
}
.output-tab:hover { background: var(--card-shade); }
.output-tab.active { background: var(--card-shade); color: var(--fg); }
.output-clear {
    padding: 0 10px; height: 26px; border: none; background: transparent;
    color: var(--fg-dim); border-radius: var(--radius-button); font-size: 11px; cursor: pointer;
}
.output-clear:hover { background: var(--card-shade); color: var(--fg); }
.output-status {
    font-weight: 400;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--fg-dim);
}
.output {
    flex: 1;
    overflow: auto;
    padding: 12px 16px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    line-height: 1.55;
    color: var(--fg-dim);
    white-space: pre-wrap;
    word-break: break-word;
}
.terminal-prompt {
    color: #9cc2ff;
    font-family: "IBM Plex Mono","DejaVu Sans Mono","Liberation Mono",monospace;
    font-size: 12px;
    white-space: nowrap;
}
.output .empty {
    color: var(--fg-mute);
    font-style: italic;
    font-family: var(--font-body);
}
.traceback {
    background: var(--error-soft);
    border-left: 3px solid var(--error);
    padding: 10px 12px;
    margin: 0 0 10px 0;
    border-radius: 0 var(--radius-button) var(--radius-button) 0;
    color: var(--fg);
    white-space: pre-wrap;
}
.traceback .tb-title {
    color: var(--error); font-weight: 700;
    font-family: var(--font-body); font-size: 13px;
    margin-bottom: 4px; display: block;
}
.traceback .tb-muted { color: var(--fg-dim); }
.traceback.continue-mode {
    border-left-color: var(--warning);
}
.warn-continue-box {
    margin-top: 10px;
    margin-bottom: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid rgba(229, 165, 10, 0.45);
    background: rgba(229, 165, 10, 0.08);
    color: var(--fg);
    font-size: 13px;
    line-height: 1.45;
}

/* Backend scold, the school-IT rejection block. Distinct from a
   normal lint traceback: red border on the left, italicized quoted
   complaint at the top, fact list below. The whole block reads as
   if the school server got annoyed at the user. */
.traceback.backend-scold {
    border-left: 3px solid var(--error);
    background: rgba(192, 28, 40, 0.06);
    margin-bottom: 12px;
}
.traceback.backend-scold .tb-title {
    color: var(--error);
}
.traceback.backend-scold .scold-quote {
    font-style: italic;
    font-size: 14px;
    line-height: 1.5;
    color: var(--fg);
    padding: 6px 0 8px;
    border-bottom: 1px dashed rgba(192, 28, 40, 0.35);
    margin-bottom: 8px;
}
.traceback.backend-scold .scold-meta {
    font-size: 12.5px;
    color: var(--fg-dim);
    line-height: 1.55;
}
.traceback.backend-scold .scold-meta code {
    color: var(--fg);
    background: rgba(192, 28, 40, 0.1);
}
.traceback.backend-scold .scold-meta em {
    color: var(--fg);
    font-style: normal;
    font-weight: 600;
}

.traceback code {
    color: var(--error); font-weight: 600;
    font-family: var(--font-mono);
    background: rgba(192,28,40,0.08);
    padding: 1px 4px;
    border-radius: 3px;
}
.success-box {
    background: rgba(38,162,105,0.10);
    border-left: 3px solid var(--success);
    padding: 10px 12px;
    margin: 0 0 10px 0;
    border-radius: 0 var(--radius-button) var(--radius-button) 0;
    color: var(--fg);
    font-family: var(--font-body);
}
.success-box b { color: var(--success); }
.console-line {
    font-family: var(--font-mono);
    font-size: 12.5px;
    line-height: 1.5;
    margin: 2px 0;
    padding: 2px 6px;
    white-space: pre-wrap;
    word-break: break-word;
    border-left: 2px solid transparent;
    color: var(--fg);
}
.console-line.console-warn {
    color: #e5a50a;
    border-left-color: rgba(229, 165, 10, 0.5);
    background: rgba(229, 165, 10, 0.06);
}
.console-line.console-error {
    color: #f66151;
    border-left-color: rgba(246, 97, 81, 0.55);
    background: rgba(246, 97, 81, 0.08);
}
.console-line.console-debug { color: var(--fg-dim); }
.console-line.console-info { color: #62a0ea; }
.preview-frame {
    flex: 1;
    border: none;
    background: white;
}


/* Documentation table inside the GDX Debugger help pages. Compact
   layout so the URL params reference fits comfortably in the
   typically-narrow help pane. */
.dbg-help-page .dbg-help-table {
    width: 100%;
    border-collapse: collapse;
    margin: 6px 0 10px;
    font-size: 12px;
}
.dbg-help-page .dbg-help-table th,
.dbg-help-page .dbg-help-table td {
    text-align: left;
    padding: 4px 8px;
    border-bottom: 1px solid var(--border, #d4d0c8);
    vertical-align: top;
}
.dbg-help-page .dbg-help-table th {
    background: rgba(255, 255, 255, 0.04);
    font-weight: 600;
}
.dbg-help-page .dbg-help-table code {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    background: rgba(255, 255, 255, 0.06);
    padding: 1px 4px;
    border-radius: 3px;
}