:root {
    --bg-main: #1e1e1e;
    --bg-header: #252526;
    --bg-gutter: #1e1e1e;
    --border-color: #3c3c3c;
    --text-main: #d4d4d4;
    --text-gutter: #858585;
    --accent-color: #0e639c;
    --accent-hover: #1177bb;
    --font-mono: 'Consolas', 'Fira Code', 'Courier New', monospace;

    /* Syntax Colors */
    --token-keyword: #c586c0;    /* Control: if, elif, else, when, repeat */
    --token-builtin: #dcdcaa;    /* Core commands: say, ask, list */
    --token-task: #4fc1ff;       /* Function keywords: task */
    --token-string: #ce9178;     /* Strings */
    --token-number: #b5cea8;     /* Integers/Decimals */
    --token-boolean: #569cd6;    /* yes / no constants */
    --token-comment: #6a9955;    /* Code Comments */
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.navbar {
    background-color: var(--bg-header);
    padding: 0 20px;
    height: 45px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 13px;
    font-weight: 600;
    color: #e1e1e1;
}

#run-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 6px 16px;
    font-size: 13px;
    cursor: pointer;
    border-radius: 4px;
    font-weight: 500;
}

#run-btn:hover { background-color: var(--accent-hover); }

.container {
    display: flex;
    flex: 1;
    height: calc(100vh - 45px);
}

.pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.pane:first-child {
    border-right: 1px solid var(--border-color);
}

.pane-title {
    background-color: #2d2d2d;
    padding: 8px 16px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-gutter);
    border-bottom: 1px solid var(--border-color);
    height: 32px;
}

.ide-wrapper {
    position: relative;
    flex: 1;
    display: flex;
    overflow: hidden;
    background-color: var(--bg-main);
    height: calc(100% - 32px);
}

.gutter {
    width: 45px;
    background-color: var(--bg-gutter);
    color: var(--text-gutter);
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
    padding-top: 15px;
    text-align: right;
    padding-right: 12px;
    user-select: none;
    border-right: 1px solid #2d2d2d;
    overflow: hidden;
}

/* Perfect Match Overlay Layout Architecture */
#editor, #highlight-layer {
    position: absolute;
    top: 0;
    left: 45px;
    width: calc(100% - 45px);
    height: 100%;
    margin: 0;
    padding: 15px !important;
    font-family: var(--font-mono) !important;
    font-size: 14px !important;
    line-height: 1.5 !important;
    tab-size: 4;
    white-space: pre !important;
    word-wrap: normal !important;
    overflow: auto !important;
    box-sizing: border-box !important;
}

#editor {
    z-index: 2;
    background: transparent !important;
    color: transparent !important;
    caret-color: #ffffff !important;
    border: none;
    resize: none;
    outline: none;
}

#highlight-layer {
    z-index: 1;
    pointer-events: none;
    background-color: transparent !important;
    color: #9cdcfe !important;
}

#highlight-code {
    font-family: var(--font-mono) !important;
    font-size: 14px !important;
    line-height: 1.5 !important;
    white-space: pre !important;
}

#output {
    flex: 1;
    background-color: #151515;
    color: #e1e1e1;
    padding: 15px;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
    white-space: pre-wrap;
    overflow-y: auto;
    height: calc(100% - 32px);
}

/* Color Tokens Rules */
.token-keyword { color: var(--token-keyword); font-weight: bold; }
.token-builtin { color: var(--token-builtin); }
.token-task { color: var(--token-task); font-weight: bold; }
.token-string { color: var(--token-string); }
.token-number { color: var(--token-number); }
.token-boolean { color: var(--token-boolean); }
.token-operator { color: #b4b4b4; font-weight: bold; }
.token-symbol { color: #ffd700; }
.token-comment { color: var(--token-comment); font-style: italic; }

/* In-Terminal Active Input Line */
.terminal-input-line {
    display: flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 14px;
    color: #e1e1e1;
    margin-top: 2px;
}

.terminal-prompt-text {
    margin-right: 8px;
    white-space: pre;
}

.terminal-input-box {
    background: transparent;
    border: none;
    outline: none;
    color: #ffd700; 
    font-family: var(--font-mono);
    font-size: 14px;
    flex: 1;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: #424242; border-radius: 4px; }