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

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #6e6e73;
    --background: #fafafa;
    --background-alt: #ffffff;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --border-color: #e5e5e7;
    --hover-color: #f5f5f7;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    --max-width: 1200px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 17px;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.011em;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.022em;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: 1rem;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(250, 250, 250, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

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

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

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

.nav-link {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    position: relative;
    overflow: hidden;
    background: var(--background);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(100, 100, 110, 0.06) 0%, transparent 60%),
        radial-gradient(circle at 80% 70%, rgba(120, 120, 130, 0.06) 0%, transparent 60%),
        radial-gradient(circle at 50% 50%, rgba(110, 110, 120, 0.04) 0%, transparent 75%);
    animation: gradientShift 30s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
    will-change: transform;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 0% 0%, rgba(100, 100, 110, 0.03) 0%, transparent 60%),
        radial-gradient(circle at 100% 100%, rgba(120, 120, 130, 0.03) 0%, transparent 60%);
    animation: backgroundPulse 25s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
    will-change: opacity;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 2;
}

.hero-title {
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) 0.1s forwards;
}

.hero-title span {
    display: inline-block;
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.25s forwards;
}

.hero-title br + * {
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.4s forwards;
}

.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradientFlow 15s ease infinite;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.55s forwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.7s forwards;
}

.hero-buttons .btn {
    opacity: 0;
    animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.hero-buttons .btn:nth-child(1) {
    animation-delay: 0.85s;
}

.hero-buttons .btn:nth-child(2) {
    animation-delay: 0.9s;
}

.hero-buttons .btn:nth-child(3) {
    animation-delay: 0.95s;
}

.hero-buttons .btn:nth-child(4) {
    animation-delay: 1s;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 50px;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: var(--transition);
    display: inline-block;
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.btn-secondary {
    background: #f5f5f7 !important;
    color: var(--text-primary) !important;
    border-color: rgba(0, 0, 0, 0.1) !important;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.btn-secondary:hover {
    background: #ffffff !important;
    border-color: rgba(0, 0, 0, 0.2) !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.75rem;
    opacity: 0;
    animation: fadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) 1.2s forwards,
               bounce 2s ease-in-out 2s infinite;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: var(--border-color);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background: var(--text-primary);
    opacity: 0.3;
    animation: scrollLine 2s ease-in-out 2.6s infinite;
}

/* Sections */
.section {
    padding: var(--spacing-lg) var(--spacing-md);
}

#about.section {
    padding-top: calc(var(--spacing-lg) + 80px);
    padding-right: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
}

#research.section {
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
}

#publications.section {
    padding-top: 80px;
    padding-bottom: var(--spacing-md);
}

.dishes-page .section {
    padding-top: calc(var(--spacing-md) + 80px);
}

#cv.section {
    padding-top: 80px;
}

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

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-title {
    text-align: center;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.dishes-page .section-title {
    margin-top: calc(var(--spacing-sm) / 2);
}

#research .section-title {
    margin-bottom: var(--spacing-sm);
}

#publications .section-header .section-title {
    margin-top: 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.section-header .section-title {
    margin-bottom: 0;
    text-align: left;
    font-size: 1.5rem;
}

.btn-view-all {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 500;
}

.btn-view-all:hover {
    color: var(--text-primary);
    gap: 0.5rem;
}

.publications-page-header {
    text-align: left;
    margin-bottom: var(--spacing-md);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.back-link {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: var(--transition);
    font-weight: 500;
}

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

.page-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.03em;
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 300;
}

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

.nav-link.active::after {
    width: 100%;
}

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

.about-wrapper {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.about-image {
    position: relative;
}

.about-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.about-greeting {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.about-greeting .gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradientFlow 20s ease infinite;
}

.profile-img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    object-fit: cover;
    aspect-ratio: 1;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    background: linear-gradient(135deg, var(--background-alt) 0%, var(--hover-color) 100%);
}

.profile-img:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.lead {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
    line-height: 1.6;
}

.social-links-about {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-top: var(--spacing-sm);
}

.social-link-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
    opacity: 0.7;
}

.social-link-icon:hover {
    color: var(--text-primary);
    opacity: 1;
    transform: translateY(-2px);
}

.social-link-icon svg {
    width: 20px;
    height: 20px;
}

p.lead a,
.about-text p.lead a,
.about-text .lead a {
    color: #667eea !important;
    text-decoration: none !important;
    border-bottom: 1px solid rgba(102, 126, 234, 0.3) !important;
    transition: var(--transition);
}

.lead .no-break {
    white-space: nowrap;
}

p.lead a:hover,
.about-text p.lead a:hover,
.about-text .lead a:hover {
    color: #764ba2 !important;
    border-bottom-color: #764ba2 !important;
    border-bottom-width: 1.5px !important;
}

.skills {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

.skills h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag {
    padding: 0.5rem 1rem;
    background: var(--background-alt);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.tag:hover {
    background: var(--primary-color);
    color: var(--background);
    border-color: var(--primary-color);
}

/* Research Section */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.research-card {
    background: var(--background-alt);
    padding: var(--spacing-lg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    text-align: left;
}

.research-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.06);
    border-color: var(--text-secondary);
}

.research-card h3 {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    letter-spacing: -0.02em;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.research-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    color: var(--text-primary);
    flex-shrink: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    vertical-align: middle;
}

.research-card:hover .research-icon {
    transform: scale(1.1);
}

.research-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* Publications Section */
.publications-list {
    max-width: 800px;
    margin: 0 auto;
}

.publications-list .publication-item {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
}

.publication-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
}

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

/* Dishes Gallery */
.dishes-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.dish-item {
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--background-alt);
    transition: var(--transition);
    overflow: hidden;
}

.dish-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--text-secondary);
}

.dish-item img {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    display: block;
}

.dish-name {
    padding: var(--spacing-xs) var(--spacing-sm);
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
    white-space: pre-line;
}


.pub-year {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 60px;
}

.pub-content {
    flex: 1;
}

.pub-title {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.pub-authors {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.pub-venue {
    color: var(--text-secondary);
    font-size: 0.8125rem;
    margin-bottom: var(--spacing-xs);
    font-style: italic;
}

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

.pub-link {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: var(--transition);
}

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

.pub-abstract-toggle {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    text-decoration: none;
    transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    -webkit-tap-highlight-color: transparent;
    line-height: 1.5;
    position: relative;
}

.pub-abstract-toggle::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 1px;
    background: currentColor;
    opacity: 0;
    transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.pub-abstract-toggle:hover {
    color: var(--text-primary);
}

.pub-abstract-toggle:hover::before {
    opacity: 0.3;
}

.pub-abstract-toggle:active {
    opacity: 0.6;
}

.pub-abstract-toggle .arrow-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 12px;
    height: 12px;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
    flex-shrink: 0;
    opacity: 0.5;
    margin-left: 0.125rem;
}

.pub-abstract-toggle:hover .arrow-icon {
    opacity: 0.8;
}

.pub-abstract-toggle.active {
    color: var(--text-primary);
}

.pub-abstract-toggle.active .arrow-icon {
    transform: rotate(180deg);
    opacity: 1;
}

.pub-abstract {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                margin-top 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0;
    margin-top: 0;
}

.pub-abstract.active {
    max-height: 1000px;
    padding: var(--spacing-sm) 0;
    margin-top: var(--spacing-sm);
    opacity: 1;
    visibility: visible;
}

.pub-abstract p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin: 0;
    padding-left: 1.5rem;
    position: relative;
}

.pub-abstract p::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 2px;
    background: var(--border-color);
    border-radius: 1px;
}

/* CV Section */
.cv-content {
    max-width: 900px;
    margin: 0 auto;
}

.cv-download {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding: 0;
    background: transparent;
}

.cv-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
}

.cv-download .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.cv-download .btn svg {
    transition: var(--transition);
}

.cv-download .btn:hover svg {
    transform: translateY(2px);
}

.cv-preview {
    display: grid;
    gap: 0;
}

.cv-item {
    background: transparent;
    padding: 0;
    border-radius: 0;
    border: none;
    padding-bottom: var(--spacing-lg);
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
}

.cv-item:last-child {
    padding-bottom: 0;
}

.cv-item h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.cv-entry {
    margin-bottom: var(--spacing-md);
}

.cv-entry:last-child {
    margin-bottom: 0;
}

.cv-entry-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.cv-entry-header h4 {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.cv-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
    white-space: nowrap;
}

.cv-institution {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-style: italic;
}

.cv-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.cv-skill {
    padding: 0.5rem 1rem;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: var(--transition);
}

.cv-skill:hover {
    background: var(--primary-color);
    color: var(--background-alt);
    border-color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--background-alt);
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

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

.social-link {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

@keyframes gradientFlow {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

@keyframes gradientShift {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg) scale(1);
        opacity: 1;
    }
    25% {
        transform: translate(7%, 7%) rotate(40deg) scale(1.1);
        opacity: 0.94;
    }
    50% {
        transform: translate(-7%, -7%) rotate(80deg) scale(0.92);
        opacity: 0.88;
    }
    75% {
        transform: translate(5%, -5%) rotate(120deg) scale(1.05);
        opacity: 0.94;
    }
}

@keyframes backgroundPulse {
    0%, 100% {
        opacity: 0.4;
    }
    50% {
        opacity: 0.75;
    }
}

@keyframes scrollLine {
    0% {
        transform: translateY(-100%);
        opacity: 0;
    }
    50% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(100%);
        opacity: 0;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--background);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .publication-item {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .pub-year {
        min-width: auto;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

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

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

    .about-image {
        max-width: 280px;
        margin: 0 auto;
    }

    .cv-entry-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .cv-date {
        margin-top: 0.25rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .section-header .section-title {
        text-align: left;
    }

    .btn-view-all {
        align-self: flex-end;
    }

    .dishes-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }

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