/*
  BLOG STYLES - Postmodern Readability
  Maintains red/black brutalist aesthetic while optimizing for lecture notes
-------------------------------------------------------------------------------*/

/* ============================================================================
   BLOG INDEX PAGE STYLES
   ============================================================================ */

.blog-index-header {
    padding: 20px 15px 60px;
    text-align: left;
}

.blog-index-header .blog-main-title {
    font-size: 12vw;
    font-weight: 700;
    font-family: sans-serif;
    line-height: 0.9em;
    letter-spacing: -0.5vw;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.blog-index-header .blog-subtitle {
    font-family: 'courier-prime.regular', monospace;
    font-size: 1.1em;
    line-height: 1.5em;
    max-width: 600px;
}

/* Article List */
.article-list {
    padding: 0 15px;
}

.article-card {
    border-top: 3px solid #000;
    padding: 30px 0;
    display: block;
    text-decoration: none;
    color: #000;
    transition: background-color 0.15s ease;
}

.article-card:hover {
    background-color: rgba(0, 0, 0, 0.08);
    padding-left: 15px;
    margin-left: -15px;
    padding-right: 15px;
    margin-right: -15px;
}

.article-card:last-child {
    border-bottom: 3px solid #000;
}

.article-card .article-number {
    font-family: sans-serif;
    font-size: 1.5em;
    font-weight: 700;
    display: inline-block;
    width: 60px;
    vertical-align: top;
}

.article-card .article-info {
    display: inline-block;
    width: calc(100% - 70px);
    vertical-align: top;
}

.article-card .article-meta {
    font-family: 'courier-prime.regular', monospace;
    font-size: 0.85em;
    text-transform: uppercase;
    margin-bottom: 8px;
    opacity: 0.7;
}

.article-card .article-title {
    font-family: sans-serif;
    font-size: 2em;
    font-weight: 700;
    line-height: 1.1em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.article-card .article-excerpt {
    font-family: 'courier-prime.regular', monospace;
    font-size: 0.95em;
    line-height: 1.5em;
}

.article-card .read-more {
    display: inline-block;
    margin-top: 15px;
    font-family: sans-serif;
    font-weight: 700;
    font-size: 0.9em;
    border-bottom: 2px dashed #000;
    text-transform: uppercase;
}

/* Category Filter */
.category-filter {
    padding: 20px 15px;
    margin-bottom: 20px;
}

.category-filter span {
    font-family: 'courier-prime.regular', monospace;
    font-size: 0.9em;
    margin-right: 15px;
    cursor: pointer;
    text-transform: uppercase;
    opacity: 0.5;
    transition: opacity 0.15s ease;
}

.category-filter span:hover,
.category-filter span.active {
    opacity: 1;
    border-bottom: 2px solid #000;
}


/* ============================================================================
   ARTICLE PAGE STYLES - Optimized for Lecture Notes
   ============================================================================ */

.article-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 20px;
    padding-bottom: 60px;
}

/* Article Header */
.article-header {
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 5px solid #000;
}

.article-header .article-meta {
    font-family: 'courier-prime.regular', monospace;
    font-size: 0.9em;
    text-transform: uppercase;
    margin-bottom: 15px;
    letter-spacing: 0.05em;
}

.article-header .article-category {
    display: inline-block;
    background-color: #000;
    color: #f00;
    padding: 3px 10px;
    margin-right: 10px;
    font-weight: 700;
}

.article-header h1 {
    font-family: sans-serif;
    font-size: 3.5em;
    font-weight: 700;
    line-height: 1em;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.article-header .article-abstract {
    font-family: 'courier-prime.regular', monospace;
    font-size: 1.1em;
    line-height: 1.6em;
    border-left: 5px solid #000;
    padding-left: 20px;
    font-style: italic;
}

/* Article Content - Typography for Reading */
.article-content {
    font-family: 'courier-prime.regular', monospace;
    font-size: 1.05em;
    line-height: 1.8em;
    color: #000;
}

.article-content p {
    margin-bottom: 1.6em;
    text-align: justify;
    hyphens: auto;
}

/* Headings */
.article-content h2 {
    font-family: sans-serif;
    font-size: 2em;
    font-weight: 700;
    text-transform: uppercase;
    margin-top: 2.5em;
    margin-bottom: 1em;
    padding-left: 20px;
    border-left: 8px solid #000;
    line-height: 1.2em;
}

.article-content h3 {
    font-family: sans-serif;
    font-size: 1.4em;
    font-weight: 700;
    text-transform: uppercase;
    margin-top: 2em;
    margin-bottom: 0.8em;
    position: relative;
}

.article-content h3::before {
    content: "//";
    margin-right: 10px;
    opacity: 0.5;
}

.article-content h4 {
    font-family: sans-serif;
    font-size: 1.1em;
    font-weight: 700;
    text-transform: uppercase;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    text-decoration: underline;
    text-decoration-style: dashed;
    text-underline-offset: 4px;
}

/* Lists */
.article-content ul,
.article-content ol {
    margin-bottom: 1.6em;
    padding-left: 30px;
}

.article-content li {
    margin-bottom: 0.6em;
    line-height: 1.6em;
}

.article-content ul li {
    list-style-type: none;
    position: relative;
}

.article-content ul li::before {
    content: "→";
    position: absolute;
    left: -25px;
    font-weight: bold;
}

.article-content ol {
    counter-reset: item;
}

.article-content ol li {
    list-style-type: none;
    counter-increment: item;
    position: relative;
}

.article-content ol li::before {
    content: counter(item) ".";
    position: absolute;
    left: -30px;
    font-weight: bold;
    font-family: sans-serif;
}

/* Code Blocks - Terminal Aesthetic */
.article-content pre {
    background-color: #000;
    color: #0f0;
    padding: 25px;
    margin: 2em 0;
    overflow-x: auto;
    border: none;
    font-family: 'courier-prime.regular', Consolas, monospace;
    font-size: 0.9em;
    line-height: 1.5em;
    position: relative;
}

.article-content pre::before {
    content: "$ CODE";
    position: absolute;
    top: 0;
    left: 0;
    background-color: #0f0;
    color: #000;
    padding: 2px 10px;
    font-size: 0.75em;
    font-weight: bold;
    font-family: sans-serif;
}

.article-content code {
    font-family: 'courier-prime.regular', Consolas, monospace;
    background-color: rgba(0, 0, 0, 0.1);
    padding: 2px 6px;
}

.article-content pre code {
    background: none;
    padding: 0;
}

/* Blockquotes */
.article-content blockquote {
    background-color: #000;
    color: #f00;
    padding: 25px 30px;
    margin: 2em 0;
    font-style: italic;
    font-size: 1.1em;
    line-height: 1.6em;
    position: relative;
}

.article-content blockquote::before {
    content: """;
    font-size: 4em;
    font-family: sans-serif;
    position: absolute;
    top: 10px;
    left: 10px;
    opacity: 0.3;
    line-height: 1;
}

.article-content blockquote p {
    margin-bottom: 0;
}

.article-content blockquote cite {
    display: block;
    margin-top: 15px;
    font-size: 0.85em;
    font-style: normal;
    text-align: right;
}

/* Math (MathJax) */
.article-content .math-block {
    background-color: rgba(0, 0, 0, 0.05);
    padding: 20px;
    margin: 2em 0;
    overflow-x: auto;
    border-left: 5px solid #000;
}

/* Tables */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2em 0;
    font-size: 0.95em;
}

.article-content th,
.article-content td {
    border: 2px solid #000;
    padding: 12px 15px;
    text-align: left;
}

.article-content th {
    background-color: #000;
    color: #f00;
    font-family: sans-serif;
    font-weight: 700;
    text-transform: uppercase;
}

.article-content tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.05);
}

/* Images */
.article-content img {
    max-width: 100%;
    height: auto;
    margin: 2em 0;
    border: 5px solid #000;
}

.article-content figure {
    margin: 2em 0;
}

.article-content figcaption {
    font-size: 0.85em;
    font-style: italic;
    margin-top: 10px;
    padding-left: 15px;
    border-left: 3px solid #000;
}

/* Definition/Term Blocks */
.article-content .definition {
    background-color: rgba(0, 0, 0, 0.05);
    border: 2px solid #000;
    padding: 20px;
    margin: 2em 0;
}

.article-content .definition-term {
    font-family: sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 10px;
}

/* Note/Warning Boxes */
.article-content .note {
    background-color: rgba(0, 0, 0, 0.08);
    padding: 20px;
    margin: 2em 0;
    border-left: 5px solid #000;
}

.article-content .note::before {
    content: "NOTE:";
    font-family: sans-serif;
    font-weight: 700;
    display: block;
    margin-bottom: 10px;
}

.article-content .warning {
    background-color: #000;
    color: #f00;
    padding: 20px;
    margin: 2em 0;
}

.article-content .warning::before {
    content: "⚠ WARNING:";
    font-family: sans-serif;
    font-weight: 700;
    display: block;
    margin-bottom: 10px;
}

/* Links */
.article-content a {
    color: #000;
    text-decoration: none;
    border-bottom: 2px dashed #000;
    transition: background-color 0.15s ease;
}

.article-content a:hover {
    background-color: #000;
    color: #f00;
}

/* Horizontal Rule */
.article-content hr {
    border: none;
    height: 3px;
    background-color: #000;
    margin: 3em 0;
}

/* Table of Contents */
.toc {
    background-color: rgba(0, 0, 0, 0.05);
    padding: 25px;
    margin-bottom: 40px;
    border: 2px solid #000;
}

.toc-title {
    font-family: sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.toc ol {
    margin: 0;
    padding-left: 20px;
}

.toc li {
    margin-bottom: 8px;
}

.toc a {
    color: #000;
    text-decoration: none;
    border-bottom: 1px dashed #000;
}

.toc a:hover {
    background-color: #000;
    color: #f00;
}

/* Article Footer */
.article-footer {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 3px dashed #000;
}

.article-nav {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 40px;
}

.article-nav a {
    font-family: sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    color: #000;
    text-decoration: none;
    border-bottom: 3px solid #000;
    padding-bottom: 5px;
    transition: background-color 0.15s ease;
}

.article-nav a:hover {
    background-color: #000;
    color: #f00;
}

.article-nav .nav-prev::before {
    content: "← ";
}

.article-nav .nav-next::after {
    content: " →";
}

/* Tags */
.article-tags {
    margin-top: 30px;
}

.article-tags span {
    display: inline-block;
    background-color: #000;
    color: #f00;
    padding: 5px 12px;
    margin-right: 8px;
    margin-bottom: 8px;
    font-family: 'courier-prime.regular', monospace;
    font-size: 0.85em;
    text-transform: uppercase;
}


/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media screen and (max-width: 768px) {
    
    .blog-index-header .blog-main-title {
        font-size: 15vw;
    }
    
    .article-card .article-number {
        display: block;
        width: 100%;
        margin-bottom: 5px;
    }
    
    .article-card .article-info {
        display: block;
        width: 100%;
    }
    
    .article-card .article-title {
        font-size: 1.5em;
    }
    
    .article-container {
        padding: 15px;
    }
    
    .article-header h1 {
        font-size: 2.2em;
    }
    
    .article-content {
        font-size: 1em;
        line-height: 1.7em;
    }
    
    .article-content h2 {
        font-size: 1.5em;
    }
    
    .article-content h3 {
        font-size: 1.2em;
    }
    
    .article-content pre {
        padding: 20px 15px;
        padding-top: 35px;
        font-size: 0.85em;
    }
    
    .article-content blockquote {
        padding: 20px;
        padding-left: 25px;
    }
    
    .article-nav {
        flex-direction: column;
    }
    
    .article-nav a {
        text-align: center;
        display: block;
        padding: 15px;
        border: 2px solid #000;
        border-bottom: 3px solid #000;
    }
}

@media screen and (max-width: 480px) {
    
    .article-header h1 {
        font-size: 1.8em;
    }
    
    .article-header .article-abstract {
        font-size: 1em;
    }
    
    .article-content p {
        text-align: left;
    }
}