/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
    --color-bg: #c0c0c0;
    --color-sidebar: #ffffff;
    --color-window: #eeeeee;
    --color-text: #000000;
    --color-text-light: #666666;
    --color-accent: #0000ff;
    --color-accent-hover: #000099;
    --color-border: #000000;
    --color-border-light: #808080;
    --color-shadow: #808080;
    --color-highlight: #ffffff;
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    --font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    --sidebar-width: 340px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    background-image: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.03) 2px,
            rgba(0, 0, 0, 0.03) 4px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.03) 2px,
            rgba(0, 0, 0, 0.03) 4px
        );
    color: var(--color-text);
    line-height: 1.6;
    font-size: 14px;
    display: flex;
    min-height: 100vh;
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-accent);
    text-decoration: underline;
    transition: color 0.2s ease;
}

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

/* ===========================
   Sidebar
   =========================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--color-sidebar);
    border-right: 2px solid var(--color-border);
    box-shadow: 
        inset -1px -1px 0 var(--color-shadow),
        inset 1px 1px 0 var(--color-highlight);
    padding: var(--spacing-lg);
    overflow-y: auto;
    z-index: 100;
    display: flex;
    flex-direction: column;
}

.sidebar-content {
    max-width: 100%;
    padding-top: 6rem;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.profile-pic {
    width: 90px;
    height: 90px;
    border: 0.5px solid var(--color-border);
    border-radius: 20%;
    float: right;
    margin-left: 1rem;
    margin-top: -5rem;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    object-fit: cover;
}

.site-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    text-shadow: 1px 1px 0 var(--color-highlight);
}

.site-subtitle {
    font-size: 0.875rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.quick-links {
    margin-bottom: 0;
    margin-top: auto;
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--color-border);
}

.quick-links h3 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-shadow);
    margin-bottom: var(--spacing-sm);
    padding: 0.25rem 0.5rem;
    background: var(--color-text);
    color: var(--color-highlight);
}

.quick-links a {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--color-text);
    font-weight: 500;
    text-decoration: none;
    border: 2px outset var(--color-border-light);
    background: var(--color-window);
    margin-bottom: 0.5rem;
    transition: all 0.1s ease;
    box-shadow: 1px 1px 0 var(--color-shadow);
}

.quick-links a:hover {
    border-style: inset;
    box-shadow: inset 1px 1px 2px var(--color-shadow);
    background: var(--color-border-light);
}

.quick-links a:active,
.quick-links a.active {
    background: var(--color-text);
    color: var(--color-highlight);
}

.contact-sidebar {
    font-size: 0.8rem;
    color: var(--color-text);
    margin-bottom: 0rem;
    line-height: 1.3;
}

.contact-sidebar p {
    margin-bottom: 0.15rem;
}

.contact-sidebar strong {
    color: var(--color-text);
    font-weight: 700;
}

/* ===========================
   Main Content
   =========================== */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 900px;
    margin-right: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.content-section {
    width: 100%;
    max-width: 900px;
}

.intro-text {
    margin-bottom: var(--spacing-xl);
}

.intro-text p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
}

/* ===========================
   Content Sections
   =========================== */
.content-section {
    margin-bottom: var(--spacing-xl);
    width: 100%;
}

.section-box {
    background: var(--color-sidebar);
    background-image: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 1px,
            rgba(0, 0, 0, 0.015) 1px,
            rgba(0, 0, 0, 0.015) 2px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 1px,
            rgba(0, 0, 0, 0.015) 1px,
            rgba(0, 0, 0, 0.015) 2px
        );
    border: 2px solid var(--color-border);
    box-shadow: 
        4px 4px 0 rgba(0, 0, 0, 0.15),
        6px 6px 0 rgba(0, 0, 0, 0.1),
        8px 8px 0 rgba(0, 0, 0, 0.05),
        inset 1px 1px 0 var(--color-highlight),
        inset -1px -1px 0 var(--color-shadow);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-box h2 {
    font-size: 1rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-highlight);
    background: linear-gradient(180deg, #333333 0%, #1a1a1a 100%);
    padding: 0.4rem 0.75rem;
    border-bottom: 2px solid var(--color-border);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    position: relative;
    display: flex;
    align-items: center;
}

.section-box h2::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--color-highlight);
    border: 1px solid var(--color-border);
    margin-right: 0.5rem;
    box-shadow: inset 2px 2px 0 rgba(255, 255, 255, 0.5);
}

.section-content {
    padding: 1rem;
}

/* Inner subsections within a section */
.subsection-inner {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--color-border);
}

.subsection-inner:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.subsection-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Publication List */
.publication-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.publication-list li {
    margin-bottom: 0.6rem;
    padding-left: 1.2rem;
    position: relative;
    line-height: 1.5;
}

.publication-list li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.publication-list li strong {
    font-weight: bold;
    color: #000;
}

.item-card.compact {
    margin-bottom: var(--spacing-xs);
    padding-bottom: var(--spacing-xs);
}

.item-card.compact h4 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.item-card.compact .meta {
    font-size: 0.75rem;
}

.item-card {
    margin-bottom: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border-light);
}

.item-card:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.item-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
    line-height: 1.4;
}

.item-card h3 a {
    color: var(--color-accent);
    text-decoration: underline;
}

.item-card h3 a:hover {
    color: var(--color-accent-hover);
}

.item-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.item-card p {
    color: var(--color-text);
    line-height: 1.5;
    font-size: 0.875rem;
    margin-bottom: 0.35rem;
}

.meta {
    font-size: 0.8rem;
    color: var(--color-text-light);
    font-style: italic;
}

.coauthors {
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-xs);
}

.status {
    font-size: 0.8rem;
    color: var(--color-text-light);
    font-style: italic;
    padding: 0.25rem 0.5rem;
    background: var(--color-window);
    border: 1px solid var(--color-border-light);
    display: inline-block;
    margin-top: var(--spacing-xs);
}

/* ===========================
   Copyright
   =========================== */
.copyright {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: none;
    font-size: 0.6rem;
    color: rgba(102, 102, 102, 0.6);
    text-align: center;
    line-height: 1.4;
}

/* ===========================
   Scrollbar Styling (Classic Mac)
   =========================== */
::-webkit-scrollbar {
    width: 16px;
    height: 16px;
}

::-webkit-scrollbar-track {
    background: var(--color-window);
    border: 1px solid var(--color-border);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-light);
    border: 2px outset var(--color-highlight);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-shadow);
}

::-webkit-scrollbar-button {
    background: var(--color-window);
    border: 2px outset var(--color-border-light);
    height: 16px;
    width: 16px;
}

/* ===========================
   Responsive Design
   =========================== */

/* Larger screens - wider sidebar */
@media (min-width: 1400px) {
    :root {
        --sidebar-width: 420px;
    }
}

@media (max-width: 768px) {
    body {
        flex-direction: column;
    }
    
    .sidebar {
        position: sticky;
        top: 0;
        width: 100%;
        border-right: none;
        border-bottom: 2px solid var(--color-border);
        padding: var(--spacing-sm) var(--spacing-md);
        padding-top: var(--spacing-md);
        transition: padding 0.35s ease;
        background: var(--color-sidebar);
        z-index: 100;
    }
    
    .sidebar-content {
        padding-top: 0;
        min-height: 50px;
    }
    
    .profile-pic {
        width: 70px;
        height: auto;
        margin-top: 0;
        margin-bottom: var(--spacing-xs);
    }
    
    .site-title {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .site-subtitle {
        margin-bottom: var(--spacing-sm);
        font-size: 0.8rem;
        transition: opacity 0.35s ease, max-height 0.35s ease, margin 0.35s ease;
        max-height: 200px;
        opacity: 1;
        overflow: hidden;
    }
    
    .contact-sidebar {
        transition: opacity 0.35s ease, max-height 0.35s ease, margin 0.35s ease;
        max-height: 200px;
        opacity: 1;
        overflow: hidden;
    }
    
    /* Collapsed state - only hide subtitle and contact */
    body.mobile-scrolled .site-subtitle,
    body.mobile-scrolled .contact-sidebar {
        max-height: 0;
        opacity: 0;
        margin: 0;
        padding: 0;
    }
    
    body.mobile-scrolled .sidebar {
        padding: 0.5rem var(--spacing-md);
    }
    
    body.mobile-scrolled .quick-links {
        margin-top: 0.5rem;
        padding-top: 0.5rem;
    }
    
    .quick-links {
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-sm);
        display: flex;
        gap: 0.5rem;
        justify-content: center;
        transition: all 0.35s ease;
    }
    
    .quick-links a {
        padding: 0.4rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .copyright {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--spacing-sm);
        padding-top: 0;
    }
    
    .intro-text p {
        font-size: 0.875rem;
    }
    
    .content-section h2 {
        font-size: 1.5rem;
    }
    
    .section-box h2 {
        font-size: 0.85rem;
    }
    
    .subsection-title {
        font-size: 0.95rem;
    }
}

/* ===========================
   Utilities
   =========================== */
.hidden {
    display: none;
}

/* Vintage-style section transitions */
.section-fade-out {
    animation: fadeOutVintage 150ms ease-out forwards;
}

.section-fade-in {
    animation: fadeInVintage 300ms ease-out forwards;
}

@keyframes fadeOutVintage {
    0% {
        opacity: 1;
        transform: translateX(0);
    }
    100% {
        opacity: 0;
        transform: translateX(30px);
    }
}

@keyframes fadeInVintage {
    0% {
        opacity: 0;
        transform: translateX(-40px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===========================
   CV Content Styles
   =========================== */
.cv-content {
    padding: 1.5rem;
}

.cv-content p {
    margin: 0.35rem 0;
    line-height: 1.5;
}

.cv-subsection {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--color-border);
}

.cv-subsection:last-child {
    border-bottom: none;
}

.cv-subsection:first-child {
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
}

.contact-info-cv p {
    margin: 0.25rem 0;
}

.cv-section-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid var(--color-shadow);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-size: 0.95rem;
}

.cv-item {
    margin-bottom: 1.5rem;
    padding-left: 0.5rem;
}

.cv-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.cv-item p {
    margin: 0.25rem 0;
}

.cv-item .meta {
    font-style: italic;
    color: #444;
}

.cv-item .coauthors {
    font-size: 0.9rem;
    color: #333;
}

.cv-footer {
    text-align: center;
    color: var(--color-shadow);
    font-size: 0.9rem;
    margin-top: 0rem;
    padding-top: 0rem;
    border-bottom: 0px solid var(--color-border);
}