:root {
    --bg-color: #1e1e1e;
    --sidebar-bg: #252526;
    --activity-bar-bg: #333333;
    --status-bar-bg: #007acc;
    --status-bar-text: #ffffff;
    --tab-active-bg: #1e1e1e;
    --tab-inactive-bg: #2d2d2d;
    --tab-border: #252526;
    --text-color: #cccccc;
    --line-number: #858585;
    --selection-bg: #264f78;
    --scrollbar-bg: #424242;
    --scrollbar-thumb: #4f4f4f;
    
    /* Syntax Highlighting */
    --keyword: #569cd6;
    --control: #c586c0;
    --string: #ce9178;
    --function: #dcdcaa;
    --variable: #9cdcfe;
    --comment: #6a9955;
    --number: #b5cea8;
    --class: #4ec9b0;
}

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

body {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background-color: var(--bg-color);
    color: var(--text-color);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    font-size: 14px;
}

/* Layout */
.main-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Activity Bar */
.activity-bar {
    width: 48px;
    background-color: var(--activity-bar-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 10px;
}

.activity-icon {
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0.6;
}

.activity-icon.active {
    opacity: 1;
    border-left: 2px solid white;
}

.activity-icon svg {
    width: 24px;
    height: 24px;
    fill: #858585;
}

.activity-icon.active svg {
    fill: white;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 10px 20px;
    font-size: 11px;
    text-transform: uppercase;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-tree {
    padding: 0;
    list-style: none;
}

.file-item {
    padding: 3px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
}

.file-item:hover {
    background-color: #2a2d2e;
}

.file-item.active {
    background-color: #37373d;
}

.folder-header {
    padding: 5px 10px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Editor Area */
.editor-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color);
}

.tabs-bar {
    display: flex;
    background-color: var(--sidebar-bg);
    height: 35px;
    overflow-x: auto;
}

.tab {
    padding: 0 15px;
    display: flex;
    align-items: center;
    background-color: var(--tab-inactive-bg);
    border-right: 1px solid var(--tab-border);
    cursor: pointer;
    min-width: 120px;
    justify-content: space-between;
    font-size: 13px;
}

.tab.active {
    background-color: var(--tab-active-bg);
    color: white;
    border-top: 1px solid var(--status-bar-bg); /* Highlight active tab */
}

.tab-close {
    margin-left: 10px;
    font-size: 14px;
    opacity: 0;
}

.tab:hover .tab-close {
    opacity: 1;
}

.breadcrumbs {
    padding: 5px 15px;
    font-size: 13px;
    color: #858585;
    display: flex;
    gap: 5px;
}

.code-container {
    flex: 1;
    padding: 10px 0;
    overflow-y: auto;
    font-family: 'Consolas', 'Monaco', monospace;
    line-height: 1.5;
}

.code-line {
    display: flex;
    padding: 0 5px;
}

.code-line:hover {
    background-color: #2a2d2e; /* Subtle line highlight */
}

.line-number {
    width: 50px;
    text-align: right;
    padding-right: 15px;
    color: var(--line-number);
    user-select: none;
}

.code-content {
    white-space: pre;
}

/* Syntax Colors */
.kwd { color: var(--keyword); }
.str { color: var(--string); }
.com { color: var(--comment); }
.fun { color: var(--function); }
.num { color: var(--number); }
.cls { color: var(--class); }
.var { color: var(--variable); }
.ctl { color: var(--control); }

/* Status Bar */
.status-bar {
    height: 22px;
    background-color: var(--status-bar-bg);
    color: var(--status-bar-text);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 10px;
    font-size: 12px;
}

.status-left, .status-right {
    display: flex;
    gap: 15px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.status-item:hover {
    background-color: rgba(255,255,255,0.2);
}