:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --border-color: #000000;
    --accent-color: #000000;
    --highlight-bg: #e5e5e5;
    --title-bar-bg: #000000;
    --title-bar-text: #ffffff;
    
    --font-ui: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: #f0f0f0;
    font-family: var(--font-ui);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* Main Window Container */
.portfolio-container {
    width: 100%;
    max-width: 1400px;
    height: 95vh;
    background-color: var(--bg-color);
    border: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    box-shadow: 8px 8px 0px rgba(0,0,0,1);
}

/* IDE Layout */
.ide-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 300px;
    border-right: 2px solid var(--border-color);
    background-color: #fafafa;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    font-size: 0.75rem;
    font-weight: 800;
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    letter-spacing: 1px;
}

.file-tree {
    list-style: none;
    padding: 10px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.file-tree li {
    padding: 4px 0;
    cursor: pointer;
}

.file-tree .nested {
    padding-left: 20px;
    list-style: none;
}

.file {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 8px !important;
}

.file:hover, .file.active {
    background-color: var(--highlight-bg);
    outline: 1px solid var(--border-color);
}

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

.editor-tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    background-color: #f9f9f9;
}

.tab {
    padding: 8px 16px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    border-right: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.tab.active {
    background-color: var(--bg-color);
    border-bottom: 2px solid var(--bg-color);
    margin-bottom: -2px;
    font-weight: bold;
}

.close-tab {
    font-size: 1.2rem;
    line-height: 1;
}

/* Content View */
.editor-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.markdown-body {
    max-width: 900px;
}

.markdown-body h2 {
    font-family: var(--font-mono);
    font-size: 2rem;
    margin-bottom: 5px;
    text-transform: uppercase;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.subtitle {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 30px;
    color: #555;
}

.sys-info-box {
    background-color: var(--title-bar-bg);
    color: #00ff00;
    font-family: var(--font-mono);
    padding: 15px;
    border: 2px solid var(--border-color);
    margin-bottom: 30px;
    font-size: 0.9rem;
}

.markdown-body h3 {
    font-family: var(--font-mono);
    margin-top: 30px;
    margin-bottom: 15px;
}

.markdown-body p {
    line-height: 1.6;
    margin-bottom: 15px;
}

.tech-list {
    list-style: none;
}

.tech-list li {
    margin-bottom: 10px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.tag {
    background-color: var(--border-color);
    color: var(--bg-color);
    padding: 2px 6px;
    font-weight: bold;
    display: inline-block;
    margin-right: 10px;
}

/* Status Bar */
.status-bar {
    display: flex;
    justify-content: space-between;
    background-color: var(--title-bar-bg);
    color: var(--title-bar-text);
    padding: 4px 10px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    border-top: 2px solid var(--border-color);
}

.status-left, .status-right {
    display: flex;
    gap: 20px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    body {
        padding: 5px;
    }
    .portfolio-container {
        height: 98vh;
        max-height: 98vh;
    }

    .ide-layout {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 2px solid var(--border-color);
        flex: none;
        max-height: 180px;
        overflow-y: auto;
    }
    .editor-pane {
        flex: 1;
        overflow-y: auto;
    }
    .editor-content {
        padding: 15px;
    }
    .markdown-body h2 {
        font-size: 1.4rem;
    }
    .status-bar {
        flex-wrap: wrap;
    }
    .status-right {
        display: none; /* Hide right status info on mobile */
    }
}