/* Modern Dark Mode Design with Sidebar */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: #1c2128;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --border: #30363d;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
}

/* Top Navigation */
.site-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 600;
    transition: color 0.2s;
}

.site-title a:hover {
    color: var(--accent);
}

.site-description {
    display: none;
}

.site-nav {
    display: flex;
    gap: 2rem;
}

.site-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--accent);
}

/* Main Layout with Sidebar */
.page-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem 2rem;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 4rem;
}

/* Sidebar - Sticky */
.sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.profile-section {
    text-align: center;
    margin-bottom: 2rem;
}

.profile-image {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: 3px solid var(--border);
    margin-bottom: 1.5rem;
    object-fit: cover;
}

.profile-name {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.profile-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.profile-info {
    text-align: left;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.profile-info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.profile-info-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

.profile-links {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.profile-links a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
    font-size: 0.9rem;
}

.profile-links a:hover {
    color: var(--accent);
}

.profile-links svg {
    width: 16px;
    height: 16px;
}

/* Main Content */
.main-content {
    min-height: 100vh;
    max-width: 800px;
}

.container {
    /* This is for non-sidebar pages */
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 {
    font-size: 2.2rem;
    margin-top: 0;
}

h2 {
    font-size: 1.6rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

h3 {
    font-size: 1.3rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

strong {
    color: var(--text-primary);
    font-weight: 600;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Lists */
ul, ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

li {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

li strong {
    color: var(--text-primary);
}

/* Code */
code {
    background: var(--bg-card);
    color: var(--accent);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Courier New', monospace;
}

pre {
    background: var(--bg-secondary);
    padding: 1.5rem;
    overflow-x: auto;
    border-left: 3px solid var(--accent);
    margin-bottom: 1.5rem;
    border-radius: 4px;
}

pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    border: 1px solid var(--border);
}

figure {
    margin: 2rem 0;
}

figcaption {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-style: italic;
}

/* Note boxes */
.note-box {
    background: var(--bg-card);
    border-left: 3px solid var(--accent);
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 4px;
}

.note-box strong {
    color: var(--accent);
}

/* Note cards (for listing) */
.note-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.2s;
}

.note-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88, 166, 255, 0.1);
    border-color: var(--accent);
}

.note-card h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.note-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.note-card .meta {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Section cards */
.section-card {
    background: var(--bg-secondary);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border);
    border-radius: 8px;
}

/* Blockquotes */
blockquote {
    border-left: 4px solid var(--accent);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    color: var(--text-muted);
    font-style: italic;
    background: var(--bg-card);
    padding: 1rem 1.5rem;
    border-radius: 4px;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--bg-card);
    color: var(--text-primary);
    font-weight: 600;
}

tr:hover {
    background: var(--bg-card);
}

/* Footer */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

.site-footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.social-links {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-links a {
    color: var(--text-secondary);
}

.social-links a:hover {
    color: var(--accent);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .page-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .sidebar {
        position: relative;
        top: 0;
    }

    .profile-section {
        display: flex;
        align-items: center;
        gap: 2rem;
        text-align: left;
    }

    .profile-image {
        width: 150px;
        height: 150px;
    }

    .profile-info,
    .profile-links {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        gap: 1rem;
    }

    .site-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .profile-section {
        flex-direction: column;
        text-align: center;
    }

    .profile-info,
    .profile-links {
        grid-template-columns: 1fr;
    }

    .page-container {
        padding: 2rem 1rem;
    }

    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.4rem; }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background: var(--accent);
    color: var(--bg-primary);
}

/* Collapsible sections (details/summary) */
details {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

details:hover {
    border-color: var(--accent);
}

details[open] {
    background: var(--bg-card);
}

summary {
    cursor: pointer;
    user-select: none;
    font-size: 1.1rem;
    color: var(--text-primary);
    list-style: none;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.2s;
}

summary::-webkit-details-marker {
    display: none;
}

summary::before {
    content: "▶";
    display: inline-block;
    margin-right: 0.5rem;
    transition: transform 0.3s;
    color: var(--accent);
}

details[open] summary::before {
    transform: rotate(90deg);
}

summary:hover {
    background: var(--bg-tertiary);
}

details ul {
    margin-top: 1rem;
    margin-left: 1.5rem;
}

details li {
    margin-bottom: 0.5rem;
}

/* Note card grid styling */
.note-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    min-height: 150px;
}

.note-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88, 166, 255, 0.1);
    border-color: var(--accent);
}

.note-card h3 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
    color: var(--text-primary);
}

.note-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    flex-grow: 1;
}

.note-card .meta {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

/* Section cards */
.section-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 8px;
}

.section-card h3 {
    margin-top: 0;
    color: var(--accent);
}

/* Keywords/Tags Styling */
.keywords-container {
    display: grid;
    gap: 1.5rem;
    margin: 2rem 0;
}

.keyword-category {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.keyword-category h4 {
    margin: 0 0 1rem 0;
    color: var(--accent);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.keyword-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: all 0.2s;
    cursor: default;
}

.tag:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(88, 166, 255, 0.2);
}

/* Alternative: Compact single-line tags */
.keyword-tags-compact {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.keyword-tags-compact .tag {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .keyword-tags {
        gap: 0.5rem;
    }

    .tag {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
}
/* 1. CSS for the List Item to align items horizontally */
.publication-item {
    /* Removes the default bullet point from the list item */
    list-style-type: none;

    /* Makes the children (Heading and Button) align on one line */
    display: flex;

    /* Pushes the button to the far right */
    justify-content: space-between;

    /* Vertically aligns the text of the heading and the button */
    align-items: center;

    /* Adds space below each list item */
    margin-bottom: 15px;
}

/* 2. CSS for the Button (same as before, but ensure it's present) */
.pdf-button {
    /* Basic Button Look */
    display: inline-block;
    padding: 8px 15px; /* Slightly smaller padding for a cleaner look */
    border: none;
    border-radius: 5px;
    text-decoration: none;

    /* Colors */
    background-color: #007bff;
    color: white;

    /* Font */
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;

    /* Optional: Ensure the button doesn't wrap */
    flex-shrink: 0;
    margin-left: 20px; /* Space between heading and button */
}

.pdf-button:hover {
    background-color: #0056b3;
}