:root {
    --bg: #0f172a;
    --panel: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --text-dim: #94a3b8;
    --accent: #38bdf8;
    --success: #4ade80;
    --warning: #fbbf24;
    --danger: #f87171;
    --code-bg: #0b1120;
    --radius: 8px;
    --font-mono: 'Consolas', 'Monaco', monospace;
}

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

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--panel);
    border-bottom: 2px solid var(--border);
}
.logo { font-weight: bold; font-size: 1.3rem; color: var(--accent); }
.level-info { display: flex; align-items: center; gap: 1rem; }
.badge {
    background: var(--border);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.workspace {
    display: grid;
    grid-template-columns: 250px 1fr 300px;
    gap: 1rem;
    padding: 1rem;
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.palette, .editor-panel, .output-panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.palette h3, .editor-header h3, .console-box h3, .vars-box h3 {
    color: var(--text-dim);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cmd-grid { display: flex; flex-direction: column; gap: 0.5rem; }
.cmd-btn {
    background: #0f172a;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    transition: 0.2s;
}
.cmd-btn:hover { border-color: var(--accent); background: #1e293b; }
.cmd-btn.loop { border-left: 3px solid var(--warning); }
.cmd-btn.cond { border-left: 3px solid var(--danger); }
.palette-hint { font-size: 0.8rem; color: var(--text-dim); text-align: center; margin-top: auto; }

.editor-header { display: flex; justify-content: space-between; align-items: center; }
.editor-actions { display: flex; gap: 0.5rem; }
.btn-sm {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
}
.btn-sm:hover { border-color: var(--text); color: var(--text); }

.code-editor {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    min-height: 200px;
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    overflow-y: auto;
    flex: 1;
}
.empty-state { color: var(--text-dim); font-style: italic; text-align: center; margin-top: 2rem; }
.code-line {
    padding: 0.4rem 0.5rem;
    border-radius: 4px;
    margin-bottom: 2px;
    display: flex;
    justify-content: space-between;
}
.code-line.active { background: rgba(56, 189, 248, 0.2); border-left: 2px solid var(--accent); }
.code-line.error { background: rgba(248, 113, 113, 0.2); border-left: 2px solid var(--danger); }
.code-line.success { background: rgba(74, 222, 128, 0.2); border-left: 2px solid var(--success); }
.remove-cmd { cursor: pointer; opacity: 0.5; }
.remove-cmd:hover { opacity: 1; color: var(--danger); }

.run-bar { display: flex; gap: 0.5rem; margin-top: auto; }
.btn-run {
    flex: 1;
    padding: 0.75rem;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    background: var(--accent);
    color: #0f172a;
}
.btn-run.secondary { background: var(--panel); color: var(--text); border: 1px solid var(--border); }
.btn-run:hover { filter: brightness(1.1); }
.btn-run:disabled { opacity: 0.5; cursor: not-allowed; }

.console-output {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.75rem;
    min-height: 120px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--success);
    overflow-y: auto;
    flex: 1;
}
.vars-display {
    background: #0f172a;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    min-height: 60px;
}
.var-item { margin-bottom: 4px; }
.var-name { color: var(--warning); }
.var-val { color: var(--accent); }

.feedback {
    background: #0f172a;
    border: 1px solid var(--border);
    padding: 1rem;
    border-radius: 6px;
    margin-top: 0.5rem;
}
.feedback.hidden { display: none; }
.feedback h4 { margin-bottom: 0.5rem; }
.feedback.success h4 { color: var(--success); }
.feedback.fail h4 { color: var(--danger); }
.feedback p { color: var(--text-dim); font-size: 0.9rem; line-height: 1.4; }

.footer { text-align: center; padding: 1.5rem; color: var(--text-dim); font-size: 0.8rem; }

@media (max-width: 1000px) {
    .workspace { grid-template-columns: 1fr; }
    .palette { order: 2; }
    .editor-panel { order: 1; }
    .output-panel { order: 3; }
}