/* Linux Environment - Global Styles */

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

:root {
    /* --- Light Mode Variables (Sepia/Paper Theme) --- */
    --bg-light: #FBF8F4; /* Soft, warm off-white */
    --text-light: #4A453E; /* Softened dark brown text */
    --accent: #667eea;
    --code-light: #E8E5DF;
    --border-light: #D6D0C4; 

    /* --- Dark Mode Variables (Palette 2: Soothing Amethyst) --- */
    --bg-dark: #1A1C2C; 
    --container-dark: #282A3A; 
    --text-dark: #EDEDED;
    --accent-dark: #C28FFF; 
    --secondary-dark: #95D1FF;
    --code-dark: #212338; 
    --border-dark: #404258; 
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-light);
    color: var(--text-light);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    background: var(--bg-dark);
    color: var(--text-dark);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 30px 40px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    background: var(--bg-light); /* Default light mode container background */
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
}

body.dark-mode .container {
    background: var(--container-dark);
    color: var(--text-dark);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* Navigation */
.breadcrumb {
    color: var(--accent);
    font-size: 0.95rem;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-light);
}

body.dark-mode .breadcrumb {
    border-bottom-color: var(--border-dark);
}

.breadcrumb a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

body.dark-mode .breadcrumb a {
    color: var(--accent-dark);
}

.breadcrumb a:hover {
    color: #764ba2; /* Kept a light-mode specific hover */
    text-decoration: underline;
}

body.dark-mode .breadcrumb a:hover {
    color: var(--secondary-dark); 
}

/* Header */
header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-light);
}

h1 {
    font-size: 2.2rem;
    color: var(--text-light);
    margin-bottom: 15px;
    font-weight: 700;
}

body.dark-mode h1 {
    color: var(--text-dark);
}

h2 {
    font-size: 1.6rem;
    color: var(--accent);
    margin-top: 35px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-light);
    font-weight: 600;
}

body.dark-mode h2 {
    color: var(--accent-dark);
    border-bottom-color: var(--border-dark);
}

h3 {
    font-size: 1.2rem;
    color: #764ba2;
    margin-top: 25px;
    margin-bottom: 15px;
    font-weight: 600;
}

body.dark-mode h3 {
    color: var(--secondary-dark);
}

h4, h5, h6 {
    color: var(--text-light);
    margin-top: 20px;
    margin-bottom: 10px;
    font-weight: 600;
}

body.dark-mode h4, body.dark-mode h5, body.dark-mode h6 {
    color: var(--text-dark);
}


/* Content Styling */
p {
    margin-bottom: 15px;
    line-height: 1.8;
    color: var(--text-light);
}

body.dark-mode p {
    color: var(--text-dark);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s ease;
    border-bottom: 1px solid rgba(102, 126, 234, 0.3);
}

body.dark-mode a {
    color: var(--accent-dark);
    border-bottom-color: rgba(194, 143, 255, 0.3); /* Soothing Amethyst RGBA */
}

a:hover {
    color: #764ba2;
    border-bottom-color: #764ba2;
}

body.dark-mode a:hover {
    color: var(--secondary-dark);
    border-bottom-color: var(--secondary-dark);
}

/* Lists */
ul, ol {
    margin: 15px 0;
    padding-left: 30px;
    color: var(--text-light);
}

body.dark-mode ul, body.dark-mode ol {
    color: var(--text-dark);
}


li {
    margin-bottom: 8px;
    line-height: 1.8;
}

li code {
    background: var(--code-light);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
}

/* Code */
code, kbd, pre, samp {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
    border-radius: 4px;
}

code {
    padding: 3px 7px;
    font-size: 0.9em;
    background: var(--code-light);
    color: #d63384; /* Light mode inline code color */
    font-weight: 500;
}

body.dark-mode code {
    background: var(--code-dark);
    color: var(--accent-dark); /* Use accent color for inline code highlights */
}

pre {
    background: #282c34;
    color: #abb2bf;
    padding: 16px;
    margin: 20px 0;
    border-radius: 8px;
    overflow-x: auto;
    border-left: 4px solid var(--accent);
    line-height: 1.4;
    font-size: 0.95em;
}

body.dark-mode pre {
    background: var(--code-dark);
    color: var(--text-dark); /* Ensure pre text color matches main text */
    border-left-color: var(--accent-dark);
}

pre code {
    background: none;
    color: inherit;
    padding: 0;
    font-size: inherit;
}

/* Tables */
table {
    border-collapse: collapse;
    width: 100%;
    margin: 20px 0;
    background: var(--bg-light);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    overflow: hidden;
}

body.dark-mode table {
    background: var(--container-dark);
    border-color: var(--border-dark);
}

table th {
    background: var(--code-light);
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-light);
    border-bottom: 2px solid var(--border-light);
}

body.dark-mode table th {
    background: color-mix(in srgb, var(--code-dark) 80%, black); /* Make table header a bit darker */
    color: var(--text-dark);
    border-bottom-color: var(--border-dark);
}

table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-light);
}

body.dark-mode table td {
    border-bottom-color: var(--border-dark);
    color: var(--text-dark);
}

table tr:hover {
    background: var(--code-light);
}

body.dark-mode table tr:hover {
    background: var(--code-dark);
}

/* Blockquotes */
blockquote {
    border-left: 4px solid var(--accent);
    padding-left: 20px;
    margin: 20px 0;
    color: var(--text-light);
    font-style: italic;
    background: var(--code-light);
    padding: 15px 15px 15px 20px;
    border-radius: 4px;
}

body.dark-mode blockquote {
    border-left-color: var(--accent-dark);
    background: var(--code-dark);
    color: var(--text-dark);
}

/* Strong/Emphasis */
strong {
    font-weight: 600;
    color: var(--text-light);
}

body.dark-mode strong {
    color: var(--text-dark);
}

em {
    font-style: italic;
}

/* Back to Index Link */
.back-to-index {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 2px solid var(--border-light);
    text-align: center;
}

body.dark-mode .back-to-index {
    border-top-color: var(--border-dark);
}

.back-to-index a {
    display: inline-block;
    background: linear-gradient(45deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 10px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
}

.back-to-index a:hover {
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
    transform: translateY(-2px);
}

/* Footer */
footer {
    text-align: center;
    color: var(--text-light);
    padding: 30px 0;
    margin-top: 50px;
    border-top: 2px solid var(--border-light);
    font-size: 0.9rem;
}

body.dark-mode footer {
    color: var(--text-dark);
    border-top-color: var(--border-dark);
}

footer a {
    color: var(--accent);
}

/* Dark Mode Toggle */
.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--accent);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.3em;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.6);
}

body.dark-mode .theme-toggle {
    background: var(--accent-dark);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 1.6rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    .breadcrumb {
        font-size: 0.9rem;
    }

    table {
        font-size: 0.9rem;
    }

    table th, table td {
        padding: 8px;
    }

    .theme-toggle {
        width: 45px;
        height: 45px;
        font-size: 1.1em;
    }
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

body.dark-mode img {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* Markdown generated content fixes */
.markdown-body {
    display: none;
}