/* ============================================
   Neomorphism / Soft UI Design
   Color Scheme: Soft Gray + Teal Accent
   Style: Extruded/Inset soft shadows
   ============================================ */

:root {
    --color-bg: #e8ecef;
    --color-bg-dark: #d1d9e0;
    --color-text: #2d3748;
    --color-text-light: #5a6578;
    --color-text-muted: #8892a0;
    --color-accent: #0d9488;
    --color-accent-light: #14b8a6;
    --shadow-light: #ffffff;
    --shadow-dark: #c5cdd6;
    --shadow-convex: 8px 8px 16px var(--shadow-dark), -8px -8px 16px var(--shadow-light);
    --shadow-convex-sm: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light);
    --shadow-inset: inset 4px 4px 8px var(--shadow-dark), inset -4px -4px 8px var(--shadow-light);
    --shadow-flat: 2px 2px 4px var(--shadow-dark), -2px -2px 4px var(--shadow-light);
    --font-main: 'Manrope', -apple-system, sans-serif;
    --radius: 20px;
    --radius-sm: 12px;
    --radius-pill: 100px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

/* Neomorphism Base Classes */
.neo-convex {
    background: var(--color-bg);
    box-shadow: var(--shadow-convex);
    border-radius: var(--radius);
}

.neo-inset {
    background: var(--color-bg);
    box-shadow: var(--shadow-inset);
    border-radius: var(--radius-sm);
}

.neo-flat {
    background: var(--color-bg);
    box-shadow: var(--shadow-flat);
    border-radius: var(--radius-sm);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    margin-bottom: 3rem;
}

.logo {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--color-accent);
    border-radius: var(--radius-sm);
}

.nav {
    display: flex;
    gap: 0.75rem;
}

.nav-item {
    padding: 0.6rem 1.25rem;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-light);
    transition: all 0.3s ease;
}

.nav-item:hover {
    color: var(--color-accent);
}

.nav-item.neo-active {
    color: var(--color-accent);
    box-shadow: var(--shadow-inset);
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
}

.hero-content {
    display: flex;
    gap: 2rem;
    align-items: center;
    padding: 2.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-convex);
}

.hero-avatar {
    width: 120px;
    height: 120px;
    min-width: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent);
    border-radius: 50%;
}

.hero-info h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
    color: var(--color-text);
}

.hero-role {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.hero-affiliation {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.hero-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.4rem 0.9rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-light);
}

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stat-card {
    padding: 1.25rem;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Sections */
.section {
    margin-bottom: 4rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 1.5rem;
    padding-left: 1rem;
    border-left: 4px solid var(--color-accent);
}

/* About Section */
.about-card {
    padding: 2rem;
}

.about-card p {
    color: var(--color-text-light);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-card p:last-of-type {
    margin-bottom: 1.5rem;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.highlight {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
}

.highlight-icon {
    font-size: 1.25rem;
}

.highlight-text {
    display: flex;
    flex-direction: column;
}

.highlight-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.highlight-value {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text);
}

/* Research Section */
.research-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.research-card {
    padding: 1.75rem;
    transition: transform 0.3s ease;
}

.research-card:hover {
    transform: translateY(-4px);
}

.research-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.research-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.research-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.research-status {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background: var(--color-bg);
    box-shadow: var(--shadow-inset);
    border-radius: var(--radius-pill);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Publications Section */
.publications-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.pub-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1rem 1.25rem;
    transition: transform 0.3s ease;
}

.pub-card:hover {
    transform: translateX(4px);
}

.pub-year {
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-accent);
    min-width: 60px;
    text-align: center;
}

.pub-info {
    flex: 1;
}

.pub-info h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.15rem;
    line-height: 1.4;
}

.pub-journal {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.pub-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    font-size: 1rem;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.3s ease;
}

.pub-btn:hover {
    color: var(--color-accent);
    box-shadow: var(--shadow-inset);
}

.view-all {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-accent);
    transition: all 0.3s ease;
}

.view-all:hover {
    box-shadow: var(--shadow-inset);
}

/* Teaching Section */
.teaching-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.teaching-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
}

.course-badge {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-accent);
    white-space: nowrap;
}

.course-info {
    flex: 1;
}

.course-info h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.course-info p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.course-toggle {
    width: 50px;
    height: 28px;
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: var(--radius-pill);
    cursor: pointer;
}

.toggle-indicator {
    width: 20px;
    height: 20px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.contact-main {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.contact-details a,
.contact-details span:not(.contact-label) {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
}

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

.social-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    align-content: start;
}

.social-btn {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text-light);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-btn:hover {
    color: var(--color-accent);
    box-shadow: var(--shadow-inset);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
}

.footer p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Responsive */
@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        flex-direction: row;
        justify-content: center;
    }

    .stat-card {
        flex: 1;
        max-width: 150px;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

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

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

    .social-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }

    .header {
        flex-direction: column;
        gap: 1rem;
    }

    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-item {
        padding: 0.5rem 0.9rem;
        font-size: 0.8rem;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1.5rem;
    }

    .hero-tags {
        justify-content: center;
    }

    .hero-stats {
        flex-direction: column;
    }

    .stat-card {
        max-width: none;
    }

    .hero-info h1 {
        font-size: 1.75rem;
    }

    .teaching-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .course-toggle {
        align-self: flex-end;
    }

    .pub-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .pub-btn {
        align-self: flex-end;
    }
}