:root {
    --bg-color: #d8dee9;
    --card-bg: rgba(236, 240, 245, 0.65);
    --card-border: rgba(255, 255, 255, 0.6);
    --text-primary: #1e293b;
    --text-secondary: #334155;
    --accent-teal: #0f766e;
    --accent-teal-glow: rgba(15, 118, 110, 0.25);
    --accent-purple: #6b21a8;
    --accent-purple-glow: rgba(107, 33, 168, 0.25);
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem 1rem;
    position: relative;
    overflow-y: auto;
}

/* Background animated glass blobs */
.bg-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s infinite alternate ease-in-out;
}

.highlight-teal {
    background-color: var(--accent-teal-glow);
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
}

.highlight-purple {
    background-color: var(--accent-purple-glow);
    width: 500px;
    height: 500px;
    bottom: -150px;
    left: -150px;
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(50px, 30px) scale(1.1); }
    100% { transform: translate(-30px, 50px) scale(0.9); }
}

/* Glassmorphism Card Container */
.card-container {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2.5rem;
    width: 100%;
    max-width: 640px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    margin: 1rem auto;
}

/* Hero Section */
.hero-section {
    text-align: center;
}

.profile-avatar {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-teal), var(--accent-purple));
    margin: 0 auto 1.25rem;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 20px rgba(13, 148, 136, 0.3);
    position: relative;
}

.profile-avatar::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-teal), transparent, var(--accent-purple));
    z-index: -1;
    animation: spin 4s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

.avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    letter-spacing: -0.5px;
}

.credentials {
    font-size: 1.25rem;
    color: var(--accent-purple);
    font-weight: 600;
}

.title {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 0.75rem;
}

.bio {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.education {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--accent-teal);
    font-weight: 500;
    margin: 0.25rem 0;
}

.education i {
    margin-right: 0.3rem;
}

/* Accolades */
.accolades {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(13, 148, 136, 0.1);
    border-radius: 12px;
    padding: 0.85rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.accolades:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--accent-teal);
    transform: scale(1.02);
}

.accolades i {
    color: var(--accent-teal);
    font-size: 1.3rem;
}

/* ===== Tabs ===== */
.tabs-nav {
    display: flex;
    gap: 0.25rem;
    background: rgba(0, 0, 0, 0.04);
    border-radius: 12px;
    padding: 4px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.6rem 0.5rem;
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.4);
}

.tab-btn.active {
    background: white;
    color: var(--text-primary);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.tab-btn i {
    font-size: 0.8rem;
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-purple);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Research Grid */
.research-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.research-card {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1rem;
    transition: all 0.25s ease;
}

.research-card:hover {
    background: white;
    border-color: var(--accent-teal);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
}

.research-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--accent-teal-glow), var(--accent-purple-glow));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.6rem;
    color: var(--accent-teal);
    font-size: 1rem;
}

.research-card h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.research-card p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Metrics Bar */
.metrics-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 0.85rem 1.5rem;
}

.metric {
    text-align: center;
}

.metric-value {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-teal);
}

.metric-label {
    font-size: 0.72rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-divider {
    width: 1px;
    height: 28px;
    background: #e2e8f0;
}

/* Publications List */
.pub-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.pub-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    transition: all 0.2s ease;
}

.pub-item:hover {
    background: white;
    border-color: var(--accent-teal);
    transform: translateX(4px);
}

.pub-citations {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-teal);
    background: var(--accent-teal-glow);
    min-width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.pub-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    min-width: 0;
}

.pub-title {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.3;
}

.pub-year {
    font-size: 0.72rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.scholar-link-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding: 0.7rem 1.5rem;
    background: var(--text-primary);
    color: white;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.scholar-link-btn:hover {
    background: var(--accent-purple);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--accent-purple-glow);
}

/* Contact Section */
.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-row {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1rem;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all 0.25s ease;
}

.contact-row:hover {
    background: white;
    border-color: var(--accent-teal);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.contact-row i {
    font-size: 1.1rem;
    color: var(--accent-teal);
    width: 20px;
    text-align: center;
}

/* Responsive */
@media (max-width: 640px) {
    .card-container {
        border-radius: 16px;
        padding: 1.5rem;
    }

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

    .name {
        font-size: 1.5rem;
    }
}