/* ========================================
   CSS Variables - Modern Color Scheme
   ======================================== */
:root {
    /* Primary Colors - Teal/Blue Theme */
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --secondary: #14b8a6;
    --secondary-dark: #0d9488;
    
    /* Neutral Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    
    /* Accent Colors */
    --accent: #06b6d4;
    --accent-light: #67e8f9;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Border & Shadow */
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Consolas', monospace;
}

/* ========================================
   Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

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

.lead {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-secondary);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    max-width: 100%;
    overflow: hidden;
}

.nav-brand {
    flex-shrink: 0;
    max-width: calc(100% - 60px);
}

.nav-logo {
    width: 44px;
    height: 44px;
    max-width: 44px !important;
    max-height: 44px !important;
    min-width: 44px;
    min-height: 44px;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
}

.nav-text {
    color: var(--primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
    background-color: var(--bg-secondary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

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

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background-color: var(--primary);
    color: white;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-btn.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-image 1s ease-in-out;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(0px);
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    text-shadow: 0 2px 4px rgba(255, 255, 255, 0.8);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
    font-weight: 400;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    color: var(--text-secondary);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
    font-weight: 300;
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-description.dark {
    color: var(--text-primary);
    text-shadow: none;
    font-weight: 400;
}

.hero-description em {
    font-style: italic;
    font-weight: 500;
    color: var(--primary);
}

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

/* ========================================
   Page Header
   ======================================== */
.page-header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(1px);
    z-index: 0;
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    margin-bottom: var(--spacing-xs);
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(255, 255, 255, 0.8);
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    position: relative;
    z-index: 1;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-alt {
    background-color: var(--bg-secondary);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    padding-bottom: var(--spacing-md);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

.section-header-enhanced {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-md);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

/* ========================================
   About Section
   ======================================== */
/* ========================================
   About Section
   ======================================== */
.about-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.about-main {
    width: 100%;
}

.about-content {
    line-height: 1.8;
}

.about-text {
    font-size: 1.0625rem;
    color: #6b7280;
    line-height: 1.9;
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.about-text:last-child {
    margin-bottom: 0;
}

.about-text em {
    font-style: italic;
    color: var(--text-secondary);
}

.text-center {
    text-align: center;
}

/* ========================================
   Cards
   ======================================== */
.research-grid,
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.research-card,
.team-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.research-card:hover,
.team-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.team-card {
    text-align: center;
}

.team-card a {
    display: block;
    text-decoration: none;
    color: inherit;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.research-card h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.research-card.featured {
    border: 2px solid var(--primary-light);
    background: linear-gradient(to bottom, white 0%, var(--bg-secondary) 100%);
}

.research-card.featured:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
}

.research-highlights {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-md);
}

.research-highlights li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.research-highlights li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.team-avatar-wrapper {
    position: relative;
    width: 100%;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.team-avatar-wrapper img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-light);
}

.team-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
}

.team-role {
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.team-bio {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ========================================
   Updates/Posts Grid
   ======================================== */
.updates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

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

.update-card,
.post-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary);
}

.update-card:hover,
.post-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.update-date,
.post-date {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xs);
}

.post-card h3 {
    margin-bottom: var(--spacing-xs);
}

.post-card h3 a {
    color: var(--text-primary);
}

.post-card h3 a:hover {
    color: var(--primary);
}

.post-excerpt {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.post-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.tag {
    background-color: var(--bg-secondary);
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* ========================================
   Filter Bar
   ======================================== */
.filter-bar {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: center;
}

/* ========================================
   Publications
   ======================================== */
.publications-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.publication-item {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--secondary);
    transition: all 0.3s ease;
}

.publication-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

.publication-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--primary);
}

.publication-authors {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    font-style: italic;
}

.publication-journal {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

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

.publication-links a {
    padding: 0.25rem 0.75rem;
    background-color: var(--bg-secondary);
    border-radius: 6px;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.publication-links a:hover {
    background-color: var(--primary);
    color: white;
}

/* ========================================
   Post Article
   ======================================== */
.post-article {
    padding: var(--spacing-xl) 0;
}

.post-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border);
}

.back-link {
    display: inline-block;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-weight: 500;
}

.back-link:hover {
    color: var(--primary);
}

.post-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.post-meta {
    display: flex;
    gap: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.post-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Markdown Content Styles */
.post-content h1,
.post-content h2,
.post-content h3 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.post-content h2 {
    border-bottom: 2px solid var(--border);
    padding-bottom: var(--spacing-xs);
}

.post-content p {
    margin-bottom: var(--spacing-md);
}

.post-content ul,
.post-content ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.post-content li {
    margin-bottom: var(--spacing-xs);
}

.post-content code {
    background-color: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--primary-dark);
}

.post-content pre {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--primary);
}

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

.post-content blockquote {
    border-left: 4px solid var(--primary);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.post-content a {
    color: var(--primary);
    text-decoration: underline;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-md) 0;
    box-shadow: var(--shadow);
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

.post-content table th,
.post-content table td {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border);
    text-align: left;
}

.post-content table th {
    background-color: var(--bg-secondary);
    font-weight: 600;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--text-primary);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xs);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

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

/* Extra small mobile devices (phones) */
@media (max-width: 480px) {
    .nav-logo {
        width: 32px !important;
        height: 32px !important;
        max-width: 32px !important;
        max-height: 32px !important;
        min-width: 32px;
        min-height: 32px;
    }

    .nav-brand a {
        font-size: 1rem;
        gap: 0.5rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

/* Standard mobile devices (tablets and phones) */
@media (max-width: 768px) {
    /* Navigation mobile optimization */
    .navbar {
        overflow: hidden;
    }

    .navbar .container {
        padding-top: var(--spacing-xs);
        padding-bottom: var(--spacing-xs);
        max-width: 100%;
    }

    .nav-brand {
        flex-shrink: 0;
        max-width: calc(100vw - 80px);
        overflow: hidden;
    }

    .nav-brand a {
        font-size: 1.125rem;
        gap: var(--spacing-xs);
        max-width: 100%;
    }

    .nav-logo {
        width: 36px !important;
        height: 36px !important;
        max-width: 36px !important;
        max-height: 36px !important;
        min-width: 36px;
        min-height: 36px;
        flex-shrink: 0;
    }

    .nav-text {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    /* Container mobile optimization */
    .container {
        padding: 0 var(--spacing-sm);
    }

    /* Hero section mobile optimization */
    .hero {
        min-height: 60vh;
        padding: var(--spacing-xl) var(--spacing-sm);
    }

    .hero-title {
        font-size: 2rem;
        margin-bottom: var(--spacing-sm);
    }

    .hero-subtitle {
        font-size: 1.125rem;
        margin-bottom: var(--spacing-sm);
    }

    .hero-description {
        font-size: 1rem;
        padding: 0 var(--spacing-sm);
    }

    .hero-actions {
        gap: var(--spacing-sm);
        flex-wrap: wrap;
    }

    .hero-actions .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.9rem;
    }

    /* Typography mobile optimization */
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    /* Section mobile optimization */
    .section {
        padding: var(--spacing-xl) 0;
    }

    .section-title {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-lg);
    }

    /* Grid mobile optimization */
    .research-grid,
    .team-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .research-card,
    .team-card {
        padding: var(--spacing-md);
    }

    /* Post mobile optimization */
    .post-title {
        font-size: 1.75rem;
    }

    .post-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
        font-size: 0.85rem;
    }

    /* Members mobile optimization */
    .members-grid {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .member-card {
        flex: 1 1 100%;
        min-width: auto;
    }

    .member-profile {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }

    .member-photo-large {
        width: 150px;
        height: 150px;
    }

    .member-name-large {
        font-size: 2rem;
    }

    /* About section mobile optimization */
    .about-text {
        font-size: 1rem;
        line-height: 1.8;
        margin-bottom: var(--spacing-md);
    }

    /* Updates grid mobile optimization */
    .updates-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    /* Footer mobile optimization */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* ========================================
   Members Page Styles
   ======================================== */
.member-year-group {
    margin-bottom: var(--spacing-2xl);
}

.member-year-group:last-child {
    margin-bottom: 0;
}

.member-year-title {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border);
    font-weight: 600;
}

.members-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.member-card {
    flex: 0 0 220px;
    width: 220px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    overflow: hidden;
}

.member-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.member-card a {
    display: block;
    text-decoration: none;
    color: inherit;
}

.member-photo-wrapper {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background-color: var(--bg-secondary);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.member-photo-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.member-avatar-fallback {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: 700;
}

.member-card-info {
    padding: var(--spacing-md);
    text-align: center;
}

.member-card-info h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.member-card-role {
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.member-card-year,
.member-card-degree {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
}

/* ========================================
   Individual Member Page Styles
   ======================================== */
.member-article {
    padding: var(--spacing-xl) 0;
}

.member-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border);
}

.member-profile {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    margin-top: var(--spacing-lg);
}

.member-photo-container {
    flex-shrink: 0;
}

.member-photo-large {
    width: 200px;
    height: 200px;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--bg-primary);
}

.member-info {
    flex: 1;
}

.member-name-large {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.member-role-large {
    font-size: 1.25rem;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.member-year,
.member-degree {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.member-email {
    margin-top: var(--spacing-sm);
}

.member-email a {
    color: var(--primary);
    font-weight: 500;
}

.member-content {
    max-width: 900px;
    margin: 0 auto;
}

.member-section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.member-section:last-child {
    border-bottom: none;
}

.member-section h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--border);
}

.member-bio-content {
    line-height: 1.8;
}

.member-bio-content p {
    margin-bottom: var(--spacing-md);
}

.research-interests-list {
    list-style: none;
    padding: 0;
}

.research-interests-list li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--primary);
    border-radius: 4px;
}

.member-publications-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.member-cv-content {
    line-height: 1.8;
}

.member-cv-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.member-cv-content h3:first-child {
    margin-top: 0;
}

.member-cv-content ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   Photo Wall Styles
   ======================================== */
.gallery-toolbar {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: 8px;
}

.gallery-hint {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.gallery-hint code {
    background-color: var(--bg-tertiary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    color: var(--primary);
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.photo-card {
    position: relative;
    aspect-ratio: 4 / 3;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    background-color: var(--bg-secondary);
}

.photo-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.photo-card-button {
    width: 100%;
    height: 100%;
    padding: 0;
    border: none;
    background: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.photo-card-button {
    position: relative;
}

.photo-card-button img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.photo-card-button img.photo-lazy {
    opacity: 0.7;
    filter: blur(5px);
}

.photo-card-button img.loaded {
    opacity: 1;
    filter: blur(0);
}

.photo-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.9rem;
    opacity: 0.8;
    pointer-events: none;
    transition: opacity 0.3s;
}

.photo-card-button img.loaded ~ .photo-loading {
    opacity: 0;
}

.photo-card:hover .photo-card-button img {
    transform: scale(1.05);
}


/* Photo Modal */
.photo-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.photo-modal.active {
    opacity: 1;
    visibility: visible;
}

.photo-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(4px);
}

.photo-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    z-index: 1;
}

.photo-modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.photo-modal-close:hover {
    background-color: white;
    transform: rotate(90deg);
}

.photo-modal-content img {
    max-width: 100%;
    max-height: 90vh;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    padding: var(--spacing-lg);
}

@media (max-width: 768px) {
    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--spacing-md);
    }

    .photo-modal-content {
        max-width: 95vw;
        max-height: 95vh;
    }

    .photo-modal-content img {
        max-height: 85vh;
        padding: var(--spacing-md);
    }
}