/* ---
   Zen Minimal Academic Theme v3.0
   World-Class Design: Clarity, Sophistication, Impact
   --- */

/* ============================================= */
/* 1. DESIGN TOKENS & CUSTOM PROPERTIES          */
/* ============================================= */
:root {
    /* Enhanced Color System */
    --color-text: #0f172a;
    --color-secondary: #475569;
    --color-text-secondary: #475569;
    --color-text-tertiary: #94a3b8;
    --color-accent: #059669;
    --color-accent-hover: #047857;
    --color-accent-light: #d1fae5;
    --color-bg: #ffffff;
    --color-bg-soft: #f8fafc;
    --color-bg-hover: #f1f5f9;
    --color-border: #e2e8f0;
    --color-border-soft: #f1f5f9;
    --color-special: #ea580c;
    
    /* Sophisticated Typography Scale */
    --font-sans: 'Ubuntu', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
    
    /* Fluid Type Scale */
    --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.3vw, 0.9375rem);
    --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
    --text-lg: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.35rem + 0.75vw, 1.875rem);
    --text-3xl: clamp(1.875rem, 1.65rem + 1.1vw, 2.25rem);
    --text-4xl: clamp(2.25rem, 1.95rem + 1.5vw, 3rem);
    --text-5xl: clamp(3rem, 2.5rem + 2.5vw, 4rem);
    
    /* Refined Spacing System */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Layout & Components */
    --layout-width: 52rem;
    --border-radius: 0.75rem;
    --border-radius-sm: 0.375rem;
    --border-radius-lg: 1rem;
    
    /* Enhanced Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --color-text: #f1f5f9;
        --color-text-secondary: #cbd5e1;
        --color-text-tertiary: #94a3b8;
        --color-accent: #34d399;
        --color-accent-hover: #6ee7b7;
        --color-accent-light: #064e3b;
        --color-bg: #0f172a;
        --color-bg-soft: #1e293b;
        --color-bg-hover: #334155;
        --color-border: #334155;
        --color-border-soft: #1e293b;
        --color-special: #fb923c;
    }
}

/* ============================================= */
/* 2. BASE STYLES & RESET                        */
/* ============================================= */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: 'Ubuntu', sans-serif;
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    width: 100%;
    max-width: var(--layout-width);
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
}

/* ============================================= */
/* 3. TYPOGRAPHY                                 */
/* ============================================= */
h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

h1 { 
    font-size: var(--text-5xl);
    font-weight: 800;
    letter-spacing: -0.03em;
}

h2 {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-top: var(--space-3xl);
    margin-bottom: var(--space-xl);
}

h3 {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.year-heading {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-top: var(--space-3xl);
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-border);
}

p {
    margin: 0 0 var(--space-lg);
    color: var(--color-text-secondary);
    line-height: 1.75;
}

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

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

a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

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

em {
    font-style: italic;
}

::selection {
    background: var(--color-accent);
    color: var(--color-bg);
}

/* ============================================= */
/* 4. HEADER & NAVIGATION                        */
/* ============================================= */
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(200%) blur(20px);
    -webkit-backdrop-filter: saturate(200%) blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

@media (prefers-color-scheme: dark) {
    .site-header {
        background: rgba(15, 23, 42, 0.8);
    }
}

.nav-container {
    max-width: var(--layout-width);
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-xl);
}

.nav-home {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.01em;
    transition: opacity var(--transition-fast);
}

.nav-home:hover {
    color: var(--color-text);
    opacity: 0.8;
}

.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-link {
    padding: var(--space-xs) var(--space-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--color-accent);
    background: var(--color-bg-soft);
}

.nav-link.active {
    color: var(--color-text);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 2rem;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
}

/* ============================================= */
/* 5. HERO PROFILE SECTION                       */
/* ============================================= */
.profile {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-xl) 0 var(--space-xl);
}

.photo-wrapper {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto;
    margin-bottom: var(--space-xl);
}

.photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center;
    aspect-ratio: 1 / 1;
    display: block;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

.photo-ring {
    position: absolute;
    inset: -8px;
    border: 3px solid var(--color-accent);
    border-radius: 50%;
    opacity: 0.3;
    transition: all var(--transition-base);
}

.photo-wrapper:hover .photo {
    transform: scale(1.02);
}

.photo-wrapper:hover .photo-ring {
    opacity: 0.5;
    transform: scale(1.05);
}

.profile-name {
    font-size: var(--text-5xl);
    font-weight: 800;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mission-statement {
    font-size: var(--text-xl);
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text-secondary);
    max-width: 60ch;
    margin: var(--space-md) auto var(--space-lg);
    font-style: italic;
}

.subtitle {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.affiliation {
    font-size: var(--text-base);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-2xl);
}

/* Enhanced Buttons */
.profile-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.primary-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-base);
    font-weight: 600;
    color: white;
    background: var(--color-accent);
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.primary-button:hover {
    color: white;
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.secondary-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
    cursor: pointer;
}

.secondary-button:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: var(--color-bg-soft);
    transform: translateY(-1px);
}

/* Social Links */
.social-links {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.social-link {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    background: var(--color-bg-soft);
    border: 2px solid var(--color-border);
    border-radius: 50%;
    font-size: var(--text-lg);
    transition: all var(--transition-base);
}

.social-link:hover {
    color: white;
    background: var(--color-accent);
    border-color: var(--color-accent);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ============================================= */
/* 6. CONTENT SECTIONS                           */
/* ============================================= */
.content-block {
    margin: var(--space-2xl) 0;
}

.section-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: var(--space-xl);
    color: var(--color-text);
}

/* Container Styling */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
}

.list-container {
    display: grid;
    gap: var(--space-lg);
}

/* Cards - Enhanced */
.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-accent);
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
}

.card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card:hover::before {
    transform: translateX(0);
}

/* Publication Cards - Compact & Elegant */
.publication-card {
    padding: var(--space-lg);
    border-left: 3px solid var(--color-accent);
}

.pub-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.pub-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
    line-height: 1.3;
    flex: 1;
}

.pub-year {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-light);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    white-space: nowrap;
}

.pub-authors {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0 0 var(--space-xs);
    line-height: 1.4;
}

.pub-venue {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    font-style: italic;
    margin: 0 0 var(--space-md);
}

.pub-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
}

.pub-link {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.pub-link:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.card-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.card-title a {
    color: var(--color-text);
}

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

.card-meta {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xs);
}

.category-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    background: var(--color-accent-light);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-accent);
}

.card-content {
    margin: var(--space-md) 0;
    color: var(--color-text-secondary);
    line-height: 1.75;
}

.card-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.card-link:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.cite-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    font-family: inherit;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.cite-button:hover {
    color: white;
    background: var(--color-special);
    border-color: var(--color-special);
    transform: translateY(-1px);
}

.cite-button.copied {
    color: white;
    background: var(--color-accent);
    border-color: var(--color-accent);
}

/* Service Section */
.service-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.service-item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: var(--space-md);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
}

.service-item:hover {
    background: var(--color-bg-soft);
}

.service-link {
    margin-left: var(--space-xs);
    font-size: var(--text-xs);
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.service-link:hover {
    opacity: 1;
}

.service-year {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-tertiary);
    white-space: nowrap;
}

/* Publications */
.pub-authors {
    color: var(--color-text-secondary);
}

.pub-venue {
    font-style: italic;
    color: var(--color-text-tertiary);
}

/* News Items */
.news-item {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: var(--space-xl);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border-soft);
}

.news-item:last-child {
    border-bottom: none;
}

.news-date {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-tertiary);
}

.news-content {
    color: var(--color-text-secondary);
}

.news-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.news-links a {
    font-size: var(--text-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--border-radius-sm);
}

/* Special Elements */
.talk-type,
.research-status {
    display: inline-block;
    margin-left: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-special);
    background: var(--color-bg-soft);
    border-radius: var(--border-radius-sm);
}

.section-link {
    text-align: right;
    margin-top: var(--space-xl);
}

.section-link a {
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.section-link a:hover {
    gap: var(--space-sm);
}

/* Blog */
.read-more {
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.read-more:hover {
    gap: var(--space-sm);
}

/* Page Header Styling */
.page-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    padding: var(--space-md) 0 var(--space-lg) 0;
}

.page-header h1 {
    font-size: var(--text-5xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
    letter-spacing: -0.025em;
}

.post-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-border);
}

.post-date {
    color: var(--color-text-tertiary);
    font-size: var(--text-base);
}

.post-content {
    font-size: var(--text-lg);
    line-height: 1.8;
}

.post-content > * + * {
    margin-top: var(--space-lg);
}

.post-content h2,
.post-content h3 {
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.post-content pre {
    background: var(--color-bg-soft);
    padding: var(--space-lg);
    border-radius: var(--border-radius);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.6;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--color-bg-soft);
    padding: 0.125em 0.375em;
    border-radius: var(--border-radius-sm);
}

.post-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--space-lg);
    color: var(--color-text-secondary);
    font-style: italic;
}

/* ============================================= */
/* 7. FOOTER                                     */
/* ============================================= */
.site-footer-main {
    margin-top: var(--space-3xl);
    padding: var(--space-2xl) var(--space-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.site-footer-main p {
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
    margin: 0;
}

/* ============================================= */
/* 8. ANIMATIONS                                 */
/* ============================================= */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-slow);
}

.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================= */
/* 9. RESPONSIVE DESIGN                          */
/* ============================================= */
@media (max-width: 768px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
        --text-3xl: 1.75rem;
        --text-2xl: 1.5rem;
    }
    
    main {
        padding: var(--space-2xl) var(--space-md);
    }
    
    .nav-container {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .nav-link.active::after {
        display: none;
    }
    
    .photo {
        width: 220px;
        height: 220px;
    }
    
    .profile-actions {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
    }
    
    .primary-button,
    .secondary-button {
        width: 100%;
        justify-content: center;
    }
    
    .news-item {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
    
    .service-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }
}

@media (max-width: 480px) {
    .photo {
        width: 180px;
        height: 180px;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .social-links {
        gap: var(--space-sm);
    }
    
    .social-link {
        width: 44px;
        height: 44px;
        font-size: var(--text-base);
    }
}

/* ============================================= */
/* 10. PRINT STYLES                              */
/* ============================================= */
@media print {
    :root {
        --color-text: #000;
        --color-bg: #fff;
        --color-border: #ddd;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .site-header,
    .site-footer-main,
    .profile-actions,
    .social-links,
    .card-links {
        display: none;
    }
    
    main {
        max-width: 100%;
        padding: 0;
    }
    
    .card {
        page-break-inside: avoid;
        border: 1px solid #ddd;
        box-shadow: none;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
}

/* ============================================= */
/* 11. SEARCH AND FILTER STYLES                 */
/* ============================================= */
.search-controls {
    display: flex;
    justify-content: center;
    margin: var(--space-xl) 0 var(--space-2xl) 0;
}

.search-box {
    position: relative;
    max-width: 400px;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    border: 2px solid var(--color-border);
    border-radius: 50px;
    font-size: var(--text-base);
    background: var(--color-bg);
    color: var(--color-text);
    transition: all 0.3s ease;
    text-align: center;
    font-weight: 400;
}

.search-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.1);
    text-align: left;
    transform: translateY(-2px);
}

.search-input::placeholder {
    color: var(--color-secondary);
    transition: opacity 0.3s ease;
}

.search-input:focus::placeholder {
    opacity: 0.7;
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.sort-controls label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-secondary);
}

.sort-select {
    padding: var(--space-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    background: var(--color-bg);
    color: var(--color-text);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.sort-select:focus {
    outline: none;
    border-color: var(--color-accent);
}

@media (max-width: 768px) {
    .search-box {
        max-width: 100%;
        margin: 0 var(--space-md);
    }
    
    .search-input {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--text-sm);
    }
}

/* ============================================= */
/* 12. HOMEPAGE COMPONENTS                       */
/* ============================================= */

/* Hero Section */
.hero-section {
    padding: var(--space-2xl) 0;
    text-align: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
}

.hero-text h1 {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.hero-tagline {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 600px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

.hero-photo {
    order: -1;
}

.hero-photo .photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-border);
}

/* Bio Section */
.bio-section {
    padding: var(--space-2xl) 0;
    text-align: center;
}

.bio-section h2 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.bio-content {
    max-width: 800px;
    margin: 0 auto var(--space-xl) auto;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.interests-section h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.interests-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.interest-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* Content Sections */
.content-section {
    padding: var(--space-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-header h2 {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-footer {
    text-align: center;
    margin-top: var(--space-xl);
}

.view-all-link {
    display: inline-block;
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-base);
}

.view-all-link:hover {
    color: var(--color-accent-hover);
}

/* Divider */
.divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-2xl) 0;
    max-width: 200px;
    margin-left: auto;
    margin-right: auto;
}

/* Service Items */
.service-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-xs);
    background: var(--color-surface);
}

.service-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.service-title {
    font-weight: 600;
    color: var(--color-text);
}

.service-year {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.service-link {
    color: var(--color-accent);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
}

.service-link:hover {
    color: var(--color-accent-hover);
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 768px) {
    .hero-content {
        flex-direction: row;
        text-align: left;
    }
    
    .hero-photo {
        order: 1;
    }
    
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================= */
/* ENHANCED SERVICE SECTION STYLES              */
/* ============================================= */

/* Service Section Spacing - Reduced for more compact layout */
.service-section {
    padding: var(--space-xl) 0;
}

/* Service section headers */
.service-section-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text);
    margin: var(--space-xl) 0 var(--space-lg) 0;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--space-sm);
}

.service-section-title:first-of-type {
    margin-top: 0;
}

/* Leadership items */
.leadership-item {
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border-soft);
}

.leadership-item:last-child {
    border-bottom: none;
}

.service-content {
    flex: 1;
}

.service-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.5;
}

.service-subtitle {
    font-size: var(--text-sm);
    font-style: italic;
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
}

.service-venue {
    color: var(--color-accent);
    font-weight: 500;
}

.service-date {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-accent);
    white-space: nowrap;
}

/* Conference service groups */
.service-group {
    margin-bottom: var(--space-xl);
}

.service-group-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.service-role {
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-text);
    margin-top: var(--space-xs);
    white-space: nowrap;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.service-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.service-tag:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.service-tag-highlight {
    background: linear-gradient(135deg, #fef3c7, #fed7aa);
    border-color: #f59e0b;
    color: #92400e;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.1);
}

.service-tag-highlight .service-venue {
    color: #92400e;
    font-weight: 600;
}

.service-highlight {
    font-size: var(--text-xs);
    font-weight: 600;
    background: rgba(245, 158, 11, 0.2);
    color: #92400e;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* --- Elysian Blockquote Design: The Hanging Quote --- */
blockquote {
    position: relative;
    padding-left: 2rem;
    padding-right: 0;
    padding-top: 1rem;
    padding-bottom: 1rem;
    margin-top: 2rem;
    margin-bottom: 2rem;
    margin-left: 2rem;
    border-left: none;
    background: transparent;
    font-family: 'Ubuntu', sans-serif;
    font-style: italic;
    font-size: var(--text-lg);
    line-height: 1.7;
    color: var(--color-secondary);
}

blockquote::before {
    content: '"';
    position: absolute;
    left: -2rem;
    top: 0;
    font-family: "Playfair Display", serif;
    font-size: 6rem;
    line-height: 0.8;
    font-weight: 400;
    color: rgba(5, 150, 105, 0.4);
    pointer-events: none;
}

/* Dark mode blockquote styles */
@media (prefers-color-scheme: dark) {
    blockquote {
        color: var(--color-text-secondary);
    }
    
    blockquote::before {
        color: rgba(52, 211, 153, 0.4);
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .service-group-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .service-role {
        margin-top: 0;
    }
    
    .service-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    blockquote {
        padding-left: 3rem;
        padding-right: 0.75rem;
        padding-top: 1rem;
        padding-bottom: 1rem;
    }
    
    blockquote::before {
        font-size: 4rem;
    }
}

.social-links {
  display: flex;
  gap: 1.5rem;              /* space between icons */
  justify-content: center;  /* center align */
  margin-top: 2.5rem;
}

.social-links a {
  color: #6c757d;           /* default gray */
  font-size: 2.5rem;        /* icon size */
  transition: color 0.3s ease;
}

.social-links a:hover {
  color: #059669;           /* dark on hover */
}