/* Hero Section - Modern Clinical Research */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px var(--space-md) var(--space-xl);
    overflow: hidden;
    background: linear-gradient(135deg, #1a365d 0%, #2d4a6e 50%, #4a7ba7 100%);
}

/* Subtle medical/scientific pattern overlay */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 25% 25%, rgba(0, 168, 150, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(0, 119, 204, 0.08) 0%, transparent 50%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-eyebrow {
    color: rgba(255, 255, 255, 0.85);
    font-family: var(--font-heading);
    font-weight: 500;
    margin-bottom: var(--space-md);
    letter-spacing: 3px;
    text-transform: uppercase;
    font-size: 0.85rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.2s;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    color: #ffffff;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.4s;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255, 255, 255, 0.9);
    max-width: 650px;
    margin: 0 auto var(--space-xl);
    line-height: 1.6;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.6s;
}

.hero-cta {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.8s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}