::selection {
    background: #c7d2fe;
    color: #312e81;
}

body {
    min-height: 100vh;
}

.hero-grid {
    background-image: none;
}

.hero-grid::before,
.hero-grid::after {
    display: none;
    content: none;
}

.glass-card {
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.course-card {
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
}

.floating-card {
    animation: float 5s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}