/* ===================================
   CSS Custom Properties (Variables)
   =================================== */
:root {
    /* WHU Brand Colors */
    --color-navy: #002855;
    --color-navy-dark: #001a3d;
    --color-white: #ffffff;
    --color-light-gray: #f5f7fa;
    --color-medium-blue: #0066cc;
    --color-light-blue: #e6f2ff;
    --color-gold: #d4a574;

    /* Text Colors */
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #555555;
    --color-text-light: #777777;

    /* Link Colors */
    --color-link: #0066cc;
    --color-link-hover: #004499;

    /* Font Families */
    --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Font Sizes - Responsive with clamp() */
    --fs-h1: clamp(2.5rem, 5vw, 3.5rem);
    --fs-h2: clamp(2rem, 4vw, 2.75rem);
    --fs-h3: clamp(1.5rem, 3vw, 2rem);
    --fs-h4: clamp(1.25rem, 2.5vw, 1.5rem);
    --fs-body: clamp(1rem, 2vw, 1.125rem);
    --fs-small: 0.875rem;

    /* Line Heights */
    --lh-tight: 1.2;
    --lh-normal: 1.6;
    --lh-loose: 1.8;

    /* Font Weights */
    --fw-regular: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Container */
    --container-width: 1200px;
    --container-padding: 1.5rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 50%;
}

/* ===================================
   Language Toggle Styling
   =================================== */
.lang-toggle {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-left: var(--spacing-md);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--color-navy);
    font-size: 0.875rem;
    font-weight: var(--fw-semibold);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    opacity: 0.6;
}

.lang-btn.active {
    opacity: 1;
    background-color: var(--color-navy);
    color: var(--color-white);
}

.lang-btn:hover {
    opacity: 1;
}

/* Hide inactive language content */
.lang-en:not(.active),
.lang-de:not(.active) {
    display: none !important;
}

/* ===================================
   Reset & Base Styles
   =================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Account for sticky header */
}

body {
    font-family: var(--font-body);
    font-size: var(--fs-body);
    line-height: var(--lh-normal);
    color: var(--color-text-primary);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: var(--lh-tight);
    font-weight: var(--fw-bold);
    color: var(--color-navy-dark);
}

h1 {
    font-size: var(--fs-h1);
}

h2 {
    font-size: var(--fs-h2);
}

h3 {
    font-size: var(--fs-h3);
}

h4 {
    font-size: var(--fs-h4);
}

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

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

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

a:focus-visible {
    outline: 3px solid var(--color-medium-blue);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ===================================
   Utility Classes
   =================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--spacing-lg) 0;
}

.section-alt {
    background-color: var(--color-light-gray);
}

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

.section-intro {
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
}

/* Skip to content link for accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-navy);
    color: var(--color-white);
    padding: var(--spacing-sm);
    z-index: 100;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
}

/* ===================================
   Navigation
   =================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 1rem var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: var(--fw-bold);
    color: var(--color-navy);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text-primary);
    font-weight: var(--fw-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--color-navy);
    background-color: var(--color-light-gray);
}

.nav-link.active {
    color: var(--color-navy);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: var(--spacing-sm);
    right: var(--spacing-sm);
    height: 2px;
    background-color: var(--color-navy);
}

/* Mobile menu toggle */
.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-navy);
    position: relative;
    transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background-color: var(--color-navy);
    transition: transform var(--transition-normal);
}

.hamburger::before {
    transform: translateY(-8px);
}

.hamburger::after {
    transform: translateY(8px);
}

/* Mobile navigation */
@media (max-width: 767px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-white);
        box-shadow: var(--shadow-md);
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }

    .nav-menu.active {
        max-height: 400px;
    }

    .nav-link {
        display: block;
        padding: var(--spacing-sm) var(--container-padding);
        border-bottom: 1px solid var(--color-light-gray);
    }

    .nav-link.active::after {
        display: none;
    }

    .nav-toggle[aria-expanded="true"] .hamburger {
        background-color: transparent;
    }

    .nav-toggle[aria-expanded="true"] .hamburger::before {
        transform: rotate(45deg);
    }

    .nav-toggle[aria-expanded="true"] .hamburger::after {
        transform: rotate(-45deg);
    }
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    background: linear-gradient(135deg, var(--color-light-blue) 0%, var(--color-white) 100%);
    padding: var(--spacing-xl) 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    align-items: center;
}

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

.profile-image {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

.hero-title {
    margin-bottom: var(--spacing-sm);
    color: var(--color-navy);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    line-height: var(--lh-normal);
}

.hero-institution {
    font-size: 1.125rem;
    color: var(--color-navy);
    font-weight: var(--fw-semibold);
    margin-bottom: var(--spacing-xs);
}

.hero-expertise {
    font-size: 1.125rem;
    color: var(--color-medium-blue);
    font-weight: var(--fw-semibold);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: rgba(0, 102, 204, 0.1);
    border-radius: var(--radius-sm);
    display: inline-block;
}

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

.social-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-white);
    border: 2px solid var(--color-navy);
    border-radius: var(--radius-md);
    color: var(--color-navy);
    font-weight: var(--fw-medium);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-navy);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.social-link svg {
    flex-shrink: 0;
}

.social-link-youtube {
    background-color: #FF0000;
    border-color: #FF0000;
    color: var(--color-white);
}

.social-link-youtube:hover {
    background-color: #CC0000;
    border-color: #CC0000;
    color: var(--color-white);
}

/* Mobile hero layout */
@media (max-width: 767px) {
    .hero {
        min-height: auto;
        padding: var(--spacing-lg) 0;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
    }

    .profile-image {
        max-width: 200px;
    }

    .social-links {
        justify-content: center;
    }
}

/* ===================================
   About Section
   =================================== */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
}

.about-text p {
    text-align: justify;
    line-height: var(--lh-loose);
}

.about-highlights {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.highlights-title {
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.highlights-list {
    list-style: none;
}

.highlights-list li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-secondary);
    line-height: var(--lh-normal);
}

.highlights-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-navy);
    font-weight: var(--fw-bold);
}

@media (max-width: 767px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    .about-text p {
        text-align: left;
    }
}

/* ===================================
   GenAI Workshops Section
   =================================== */
.genai {
    background-color: var(--color-white);
}

.genai-highlight {
    margin-bottom: var(--spacing-lg);
}

.genai-youtube {
    background: linear-gradient(135deg, var(--color-light-blue) 0%, var(--color-white) 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.youtube-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.youtube-badge svg {
    flex-shrink: 0;
}

.youtube-title {
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
    font-size: 1.5rem;
}

.youtube-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: var(--lh-normal);
}

.btn-youtube {
    background-color: #FF0000;
    color: var(--color-white);
    border-color: #FF0000;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-youtube:hover {
    background-color: #CC0000;
    border-color: #CC0000;
    color: var(--color-white);
}

.btn-youtube svg {
    flex-shrink: 0;
}

/* YouTube Video Embed */
.videos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(0, 40, 85, 0.1);
}

@media (max-width: 992px) {
    .videos-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .videos-grid {
        grid-template-columns: 1fr;
    }
}

.youtube-embed {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.youtube-embed-title {
    color: var(--color-navy);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    text-align: center;
}

.video-thumbnail-link {
    display: block;
    max-width: 100%;
    margin: 0 auto;
    text-decoration: none;
}

.video-thumbnail {
    position: relative;
    width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-thumbnail:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.video-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.9;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.video-thumbnail:hover .play-button {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-md);
}

.genai-programs {
    margin-bottom: var(--spacing-lg);
}

.genai-programs-title {
    color: var(--color-navy);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    font-size: 2rem;
}

.genai-programs-intro {
    text-align: center;
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.program-card {
    background-color: var(--color-light-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.program-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.program-icon {
    color: var(--color-medium-blue);
    margin-bottom: var(--spacing-sm);
}

.program-title {
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.program-description {
    color: var(--color-text-secondary);
    line-height: var(--lh-normal);
    margin-bottom: var(--spacing-sm);
}

.program-highlights {
    list-style: none;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.program-highlights li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-secondary);
    line-height: var(--lh-normal);
}

.program-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-medium-blue);
    font-weight: var(--fw-bold);
}

.genai-collaboration {
    background-color: var(--color-light-blue);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
}

.collaboration-title {
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.collaboration-description {
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto var(--spacing-sm);
    line-height: var(--lh-normal);
}

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

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

@media (max-width: 767px) {
    .youtube-badge {
        flex-direction: column;
        text-align: center;
    }

    .programs-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Research Section
   =================================== */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.research-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.research-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.card-title {
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.card-description {
    color: var(--color-text-secondary);
    line-height: var(--lh-normal);
}

/* ===================================
   Publications Section
   =================================== */
.publications-list {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.publication-item {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-navy);
    transition: all var(--transition-fast);
}

.publication-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.publication-title {
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
    font-size: 1.125rem;
}

.publication-meta {
    font-size: var(--fs-small);
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-xs);
}

.publication-description {
    color: var(--color-text-secondary);
    line-height: var(--lh-normal);
    margin-bottom: 0;
}

.publications-cta {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
}

.publications-cta p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

/* ===================================
   AI Contributions Section
   =================================== */
.ai-contributions {
    background-color: var(--color-white);
}

.contributions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.contribution-card {
    display: flex;
    gap: var(--spacing-md);
    background-color: var(--color-light-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-navy);
    transition: all var(--transition-fast);
}

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

.contribution-icon {
    flex-shrink: 0;
    color: var(--color-navy);
}

.contribution-content {
    flex: 1;
}

.contribution-source {
    display: inline-block;
    font-size: var(--fs-small);
    font-weight: var(--fw-semibold);
    color: var(--color-medium-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.contribution-title {
    color: var(--color-navy);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    line-height: var(--lh-tight);
}

.contribution-description {
    color: var(--color-text-secondary);
    font-size: var(--fs-small);
    line-height: var(--lh-normal);
    margin-bottom: var(--spacing-sm);
}

.contribution-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-medium-blue);
    font-weight: var(--fw-medium);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contribution-link:hover {
    color: var(--color-navy);
    text-decoration: underline;
}

.contribution-link svg {
    flex-shrink: 0;
}

@media (max-width: 480px) {
    .contribution-card {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .contributions-grid {
        grid-template-columns: 1fr;
    }
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: var(--fw-semibold);
    text-align: center;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

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

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

/* ===================================
   Career Section
   =================================== */
.career-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.career-subtitle {
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-light-gray);
}

.timeline-item {
    position: relative;
    padding-left: var(--spacing-md);
    padding-bottom: var(--spacing-md);
}

.timeline-marker {
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    border-radius: var(--radius-full);
    background-color: var(--color-white);
    border: 3px solid var(--color-navy);
}

.timeline-marker.active {
    background-color: var(--color-navy);
}

.timeline-year {
    display: inline-block;
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    color: var(--color-navy);
    background-color: var(--color-light-blue);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

.timeline-title {
    margin-bottom: 0.25rem;
    color: var(--color-navy-dark);
    font-size: 1.125rem;
}

.timeline-institution {
    color: var(--color-text-secondary);
    font-weight: var(--fw-medium);
    margin-bottom: 0.25rem;
}

.timeline-detail {
    color: var(--color-text-light);
    font-size: var(--fs-small);
    line-height: var(--lh-normal);
    margin: 0;
}

@media (max-width: 767px) {
    .career-content {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Contact Section
   =================================== */
.contact-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.contact-item svg {
    color: var(--color-navy);
    flex-shrink: 0;
}

.contact-label {
    font-size: 1rem;
    font-weight: var(--fw-semibold);
    color: var(--color-navy);
    margin-bottom: 0.25rem;
}

.contact-link {
    color: var(--color-link);
    font-weight: var(--fw-medium);
}

.contact-link:hover {
    text-decoration: underline;
}

.contact-text {
    color: var(--color-text-secondary);
    line-height: var(--lh-normal);
    margin: 0;
}

.contact-links {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.contact-links-title {
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

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

.links-list li {
    border-bottom: 1px solid var(--color-light-gray);
}

.links-list li:last-child {
    border-bottom: none;
}

.profile-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.profile-link:hover {
    color: var(--color-navy);
    padding-left: var(--spacing-xs);
}

.profile-link svg {
    color: var(--color-navy);
    flex-shrink: 0;
}

@media (max-width: 767px) {
    .contact-content {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   FAQ Section
   =================================== */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.faq-item {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-medium-blue);
    transition: all var(--transition-normal);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.faq-question {
    color: var(--color-navy);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--fw-semibold);
}

.faq-answer {
    color: var(--color-text-secondary);
    line-height: var(--lh-loose);
    margin: 0;
}

@media (max-width: 767px) {
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--color-navy-dark);
    color: var(--color-white);
    padding: var(--spacing-md) 0;
    text-align: center;
}

.footer-text {
    margin-bottom: 0.25rem;
    font-size: var(--fs-small);
}

.footer-affiliation {
    margin: 0;
    font-size: var(--fs-small);
    color: rgba(255, 255, 255, 0.7);
}

/* ===================================
   Animations & Transitions
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Accessibility - Reduced Motion
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .fade-in {
        transition: none;
    }
}

/* ===================================
   Easter Eggs
   =================================== */
.easter-egg {
    color: var(--color-navy);
    text-decoration: none;
    font-weight: var(--fw-bold);
    cursor: default;
    transition: color var(--transition-fast);
}

.easter-egg:hover {
    color: var(--color-medium-blue);
    cursor: pointer;
}

.easter-egg-icon {
    cursor: pointer;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.easter-egg-icon:hover {
    transform: scale(1.1);
    color: #e91e63;
}

.easter-egg-icon:hover svg {
    stroke: #e91e63;
}

.easter-egg-year {
    color: inherit;
    text-decoration: none;
    cursor: text;
    transition: color var(--transition-fast);
}

.easter-egg-year:hover {
    color: var(--color-medium-blue);
    cursor: pointer;
}

/* ===================================
   Print Styles
   =================================== */
@media print {
    .header,
    .nav,
    .social-links,
    .skip-link {
        display: none;
    }

    body {
        font-size: 12pt;
        color: black;
    }

    a {
        text-decoration: underline;
    }

    .section {
        page-break-inside: avoid;
    }
}