:root {
    --primary: #4338ca;
    --primary-hover: #3730a3;
    --primary-light: #e0e7ff;
    --secondary: #0284c7;
    --accent: #0891b2;
    --dark-bg: #0f172a;
    --card-bg: #ffffff;
    --body-bg: #f8fafc;
    --text-main: #39595d; /*#0f172a;*/
    --text-muted: #475569;
    --border-color: #e2e8f0;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.08);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--body-bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--dark-bg);
}

.nav-logo-icon {
    width: 300px;
    height: 80px;
    background-image: url("./images/ixlab-logo_02.svg");
    background-repeat: no-repeat;
    background-size: contain;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #fff;
}

.nav-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--dark-bg);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
    list-style: none;
}

.nav-links a {
    color: #334155;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

.btn-nav {
    background: #fcba03;
    color: #ffffff !important;
    padding: 0.6rem 1.25rem;
    border-radius: 30px;
    font-weight: 600 !important;
    box-shadow: 0 4px 12px rgba(67, 56, 202, 0.25);
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(67, 56, 202, 0.35);
}

/* Banner & Hero Section */
.hero-banner {
    position: relative;
    min-height: 520px;
    background: url('https://images.unsplash.com/photo-1526374965328-7f61d4dc18c5?auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    padding: 4rem 2rem;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.88) 0%, rgba(248, 250, 252, 0.98) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-light);
    border: 1px solid rgba(79, 70, 229, 0.3);
    color: var(--primary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 3.25rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    letter-spacing: -0.03em;
    color: #0f172a;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #475569;
    max-width: 780px;
    margin: 0 auto 2.5rem;
    font-weight: 400;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

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

.stat-number {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
}

.stat-label {
    font-size: 0.875rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Section Layouts */
.section {
    /* padding: 5rem 0; */
    padding: 1rem 0rem 3rem 0;
    scroll-margin-top: 10rem; /* so nav doesn't cover the section */
}

.section-header {
    text-align: center;
    max-width: 750px;
    margin: 0 auto 3.5rem;
}

.section-tag {
    color: var(--primary);
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    display: block;
}

.section-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* Group Description Section */
.group-about {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: center;
}

.about-text h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.75rem;
    color: var(--dark-bg);
    margin-bottom: 1.25rem;
}

.about-text p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 1.25rem;
}

.pillars-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-top: 1.75rem;
}

.pillar-card {
    background: var(--body-bg);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.pillar-icon {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.pillar-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--dark-bg);
    margin-bottom: 0.25rem;
}

.pillar-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image-wrapper img {
    width: 100%;
    /* height: 480px; */
    object-fit: cover;
    display: block;
}

.about-overlay-card {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    color: var(--dark-bg);
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: var(--shadow-lg);
}

.about-overlay-card h4 {
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.about-overlay-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

/* Labs Section */
.labs-section {
    background-color: var(--body-bg);
}

.labs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 2rem;
}

.lab-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    scroll-margin-top: 8rem;
}

.lab-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(67, 56, 202, 0.3);
}

.lab-image-container {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.lab-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top; /* aligns to the top, cropping the bottom */
    transition: transform 0.5s ease;
}

.lab-card:hover .lab-image-container img {
    transform: scale(1.05);
}

.lab-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    color: var(--primary);
    padding: 0.35rem 0.8rem;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    box-shadow: var(--shadow-sm);
}

.lab-logo {
    position: absolute;
    bottom: 20px;
    left: 20px;
    width: 150px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    color: var(--dark-bg);
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: var(--shadow-lg);
}

.lab-content {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.lab-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.lab-director {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.lab-description {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.lab-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    background: var(--body-bg);
    color: var(--text-main);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
}

.lab-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lab-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: var(--transition);
}

.lab-link:hover {
    color: var(--primary-hover);
    gap: 0.6rem;
}

/* Faculty Section */
.faculty-section {
    background-color: #ffffff;
    border-top: 1px solid var(--border-color);
}

.faculty-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 2rem;
}

.faculty-card {
    background: var(--body-bg);
    border-radius: var(--radius-lg);
    padding: 1.75rem 1.5rem;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.faculty-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    background: #ffffff;
    border-color: rgba(67, 56, 202, 0.3);
}

.faculty-avatar-container {
    position: relative;
    width: 110px;
    height: 110px;
    margin: 0 auto 1.25rem;
}

.faculty-avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #ffffff;
    box-shadow: var(--shadow-md);
}

.faculty-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 0.25rem;
}

.faculty-role {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.faculty-lab {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    background: rgba(226, 232, 240, 0.6);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    display: inline-block;
}

.faculty-research {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    line-height: 1.4;
}

.faculty-socials {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
}

.social-icon {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

/* Highlights & News Section */
.highlights-section {
    background: #f1f5f9;
    color: var(--text-main);
    padding: 5rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.75rem;
}

.news-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.news-card:hover {
    background: #ffffff;
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.news-date {
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: block;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 0.75rem;
    line-height: 1.35;
}

.news-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    background-color: #f8fafc;
    color: #475569;
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 1rem;
    display: inline-block;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    color: #64748b;
}

.footer-heading {
    color: var(--dark-bg);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-links li {
    margin-bottom: 0.6rem;
}

.footer-links a {
    color: #475569;
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: #64748b;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero-title {
        font-size: 2rem;
    }

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

    .pillars-list {
        grid-template-columns: 1fr;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}