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

:root {
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d30;
    --border-color: #3e3e42;
    --text-primary: #cccccc;
    --text-secondary: #858585;
    --accent-color: #0e639c;
    --accent-hover: #1177bb;
    --success-color: #4ec9b0;
    --error-color: #f48771;
    --warning-color: #dcdcaa;
    --info-color: #9cdcfe;
    --topbar-height: 50px;
}

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
}

.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Top Bar */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--topbar-height);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.topbar-left label {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

#example-select {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 14px;
    min-width: 250px;
    cursor: pointer;
}

#example-select:hover {
    border-color: var(--accent-color);
}

#example-select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.topbar-right {
    display: flex;
    gap: 10px;
}

/* Buttons */
.btn-run {
    background: var(--success-color);
    color: #1e1e1e;
    border: none;
    padding: 8px 20px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s;
}

.btn-run:hover {
    background: #3db89a;
}

.btn-stop {
    background: var(--error-color);
    color: #1e1e1e;
    border: none;
    padding: 8px 20px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s;
}

.btn-stop:hover {
    background: #d67661;
}

.btn-stop:active {
    transform: scale(0.98);
}

.btn-run:active {
    transform: scale(0.98);
}

.btn-run .icon {
    font-size: 12px;
}

.btn-clear {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 4px 12px;
    border-radius: 3px;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-clear:hover {
    background: var(--bg-tertiary);
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Editor */
.editor-container {
    flex: 1;
    border-right: 1px solid var(--border-color);
    overflow: hidden;
}

.editor {
    width: 100%;
    height: 100%;
}

/* Console */
.console-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    overflow: hidden;
}

.console-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.console-output {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    font-family: "Consolas", "Monaco", "Courier New", monospace;
    font-size: 13px;
    line-height: 1.6;
}

.console-output:empty::before {
    content: "No output yet...";
    color: var(--text-secondary);
    font-style: italic;
}

/* Console Entries */
.console-entry {
    padding: 4px 0;
    border-bottom: 1px solid rgba(62, 62, 66, 0.3);
    word-wrap: break-word;
}

.console-entry:last-child {
    border-bottom: none;
}

.console-entry.print {
    color: var(--text-primary);
}

.console-entry.error {
    color: var(--error-color);
}

.console-entry.warning {
    color: var(--warning-color);
}

.console-entry.info {
    color: var(--info-color);
}

.console-entry .timestamp {
    color: var(--text-secondary);
    font-size: 11px;
    margin-right: 8px;
}

.console-entry .prefix {
    font-weight: 500;
    margin-right: 6px;
}

.console-entry.error .prefix {
    color: var(--error-color);
}

.console-entry.warning .prefix {
    color: var(--warning-color);
}

.console-entry.info .prefix {
    color: var(--info-color);
}

.console-entry .message {
    white-space: pre-wrap;
}

/* Scrollbar */
.console-output::-webkit-scrollbar {
    width: 10px;
}

.console-output::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

.console-output::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
}

.console-output::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }

    .editor-container {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        min-height: 50%;
    }

    .topbar-left label {
        display: none;
    }

    #example-select {
        min-width: 200px;
    }
}