:root {
    --bg-main: #1e1e1e;
    --bg-side: #252526;
    --bg-tab: #2d2d2d;
    --bg-hover: #2a2d2e;
    --border: #3c3c3c;
    --text-main: #d4d4d4;
    --text-muted: #858585;
    
    /* Syntax */
    --keyword: #569cd6;
    --variable: #9cdcfe;
    --string: #ce9178;
    --number: #b5cea8;
    --function: #dcdcaa;
    --comment: #6a9955;
    --key: #4fc1ff;
    
    /* UI */
    --accent: #007acc;
    --yellow: #cca700;
    --blue: #4fc1ff;
    --orange: #e36209;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: 'Fira Code', 'Inter', monospace;
    font-size: 14px;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.dev-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.dev-sidebar {
    width: 250px;
    background-color: var(--bg-side);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.dev-sidebar-title {
    font-size: 11px;
    padding: 10px 20px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.dev-folder {
    padding: 5px 20px;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
}

.dev-folder i {
    margin-right: 5px;
    font-size: 10px;
}

.dev-files {
    list-style: none;
}

.dev-files li {
    padding: 4px 20px 4px 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dev-files li:hover {
    background-color: var(--bg-hover);
}

.dev-files li.active {
    background-color: #37373d;
    color: #fff;
}

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

/* Tabs */
.dev-tabs {
    display: flex;
    background-color: var(--bg-side);
    border-bottom: 1px solid var(--border);
}

.dev-tab {
    padding: 10px 15px;
    background-color: var(--bg-tab);
    border-right: 1px solid var(--border);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.6;
}

.dev-tab.active {
    background-color: var(--bg-main);
    opacity: 1;
    border-top: 1px solid var(--accent);
}

/* Code Content */
.dev-content {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.dev-code-block {
    line-height: 1.6;
    font-family: 'Fira Code', monospace;
}

.line-num {
    display: inline-block;
    width: 40px;
    text-align: right;
    color: var(--text-muted);
    padding-right: 15px;
    user-select: none;
}

.keyword { color: var(--keyword); }
.variable { color: var(--variable); }
.string { color: var(--string); }
.number { color: var(--number); }
.comment { color: var(--comment); }
.key { color: var(--key); }

a.string {
    text-decoration: underline;
    text-decoration-color: transparent;
    transition: text-decoration-color 0.2s;
}

a.string:hover {
    text-decoration-color: var(--string);
}

/* Utilities */
.text-yellow { color: var(--yellow); }
.text-blue { color: var(--blue); }
.text-orange { color: var(--orange); }

/* Footer */
.dev-footer {
    height: 25px;
    background-color: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    padding: 0 10px;
    font-size: 12px;
}

.dev-footer-item {
    padding: 0 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
}

.dev-footer-item:hover {
    background-color: rgba(255,255,255,0.1);
}

/* Responsive */
@media (max-width: 768px) {
    .dev-sidebar {
        display: none;
    }
}