/* 
  NIH Corporate Design System
  Primary Color: #E40888 (Vibrant Corporate Pink/Magenta)
  Theme: Dark, Premium, Glassmorphic
*/

:root {
    --color-bg: #FAFAFA;
    --color-surface: rgba(255, 255, 255, 0.7);
    --color-surface-hover: rgba(255, 255, 255, 0.95);
    --color-primary: #E40888;
    --color-primary-glow: rgba(228, 8, 136, 0.2);
    --color-text-main: #111111;
    --color-text-muted: #666666;
    --color-border: rgba(0, 0, 0, 0.08);

    --font-main: 'Inter', sans-serif;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-main);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1,
h2,
h3,
h4 {
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-weight: 600;
}

.highlight {
    color: var(--color-primary);
    text-shadow: 0 0 20px var(--color-primary-glow);
}

.dot {
    color: var(--color-primary);
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.mt-8 {
    margin-top: 2rem;
}

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

/* 3D Canvas */
#webgl-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    /* Let clicks pass through to HTML */
}

/* UI Overlay - Content wrapper over 3D */
.content-wrapper {
    position: relative;
    z-index: 1;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.5rem 0;
    background: rgba(250, 250, 250, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(250, 250, 250, 0.9);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--color-text-main);
    letter-spacing: -0.05em;
}

.logo-img-wrap {
    display: inline-flex;
    align-items: center;
}

.logo-img {
    height: 42px;
    width: auto;
    display: block;
    transition: var(--transition);
}

.logo-img:hover {
    opacity: 0.8;
}

.logo-img--footer {
    height: 34px;
    opacity: 0.75;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--color-text-main);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:not(.btn-primary):hover {
    color: var(--color-primary);
}

/* Buttons */
.btn-primary {
    background: var(--color-primary);
    color: #fff !important;
    padding: 0.6rem 1.5rem;
    border-radius: 4px;
    /* professional, slight rounding */
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    border: 1px solid transparent;
    display: inline-block;
}

.btn-primary:hover {
    background: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary) !important;
    box-shadow: 0 0 20px var(--color-primary-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-main) !important;
    padding: 0.6rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    border: 1px solid var(--color-text-muted);
    display: inline-block;
}

.btn-secondary:hover {
    border-color: var(--color-text-main);
    background: rgba(0, 0, 0, 0.05);
}

.large {
    padding: 1rem 2.5rem;
    font-size: 1rem;
}

/* Hero Section */
.hero-section {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: 1.5rem;
    text-transform: tight;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--color-text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    opacity: 0.7;
}

.scroll-indicator span {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--color-text-muted);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.wheel {
    width: 4px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% {
        transform: translateY(0);
        opacity: 1;
    }

    100% {
        transform: translateY(12px);
        opacity: 0;
    }
}

/* Sections */
.content-section {
    padding: 8rem 0;
    border-top: 1px solid rgba(0, 0, 0, 0.03);
    background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.4) 100%);
}

.section-label {
    display: block;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    margin-bottom: 3rem;
    max-width: 800px;
}

.section-text {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 600px;
}

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.grid-2-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.stat-item {
    padding: 2rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.stat-num {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.stat-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 3rem 2rem;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    background: var(--color-surface-hover);
    border-color: rgba(228, 8, 136, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 2rem;
    opacity: 0.5;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--color-text-muted);
    font-size: 1rem;
}

/* Footer */
.footer {
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--color-border);
    background: #F0F0F0;
    position: relative;
    z-index: 10;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.footer p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

/* Portfolio */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    border-color: rgba(228, 8, 136, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.portfolio-image {
    height: 200px;
    background: linear-gradient(45deg, #f0f0f0, #e0e0e0);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.portfolio-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent, rgba(228, 8, 136, 0.1));
}

.portfolio-content {
    padding: 1.5rem;
}

.portfolio-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.portfolio-content p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Team */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.team-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 2.5rem 1.5rem;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.team-card:hover {
    transform: translateY(-5px);
    border-color: rgba(228, 8, 136, 0.3);
    background: var(--color-surface-hover);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: #f0f0f0;
    margin: 0 auto 1.5rem;
    border: 2px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.team-avatar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle, transparent 30%, rgba(228, 8, 136, 0.2) 150%);
}

.team-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.team-role {
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--color-bg);
    width: 90%;
    max-width: 900px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    position: relative;
    transform: translateY(30px);
    transition: var(--transition);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: transparent;
    border: none;
    font-size: 2rem;
    color: var(--color-text-muted);
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--color-primary);
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.modal-image {
    background: linear-gradient(45deg, #e0e0e0, #f0f0f0);
    min-height: 300px;
}

.modal-text {
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.modal-text h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--color-text-main);
}

.modal-text p {
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* Responsive */
@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .nav-links {
        display: none;
        /* In a real app, add a hamburger menu */
    }

    .modal-body {
        grid-template-columns: 1fr;
    }

    .modal-image {
        min-height: 200px;
    }

    .modal-text {
        padding: 2rem;
    }
}