/* Index (landing) page styles */

@keyframes draw-curve {
    from { stroke-dashoffset: 400; }
    to { stroke-dashoffset: 0; }
}
.animate-draw { animation: draw-curve 2s ease-out forwards; }

@keyframes fade-in-point {
    from { opacity: 0; transform: scale(0); }
    to { opacity: 1; transform: scale(1); }
}
.animate-point { animation: fade-in-point 0.3s ease-out forwards; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
.animate-float { animation: float 6s ease-in-out infinite; }

.card-glow {
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px -8px rgba(251, 191, 36, 0.15);
    border-color: rgba(251, 191, 36, 0.25) !important;
}

.dot-grid {
    background-image: radial-gradient(circle, rgba(251,191,36,0.15) 1px, transparent 1px);
    background-size: 32px 32px;
}
html[data-theme="light"] .dot-grid {
    background-image: radial-gradient(circle, rgba(180,83,9,0.1) 1px, transparent 1px);
}

@keyframes drift {
    0% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-18px) rotate(6deg); }
    100% { transform: translateY(0) rotate(0deg); }
}
.math-symbol {
    position: absolute;
    font-family: 'Georgia', serif;
    color: rgba(251,191,36,0.12);
    pointer-events: none;
    animation: drift ease-in-out infinite;
    user-select: none;
}
html[data-theme="light"] .math-symbol {
    color: rgba(180,83,9,0.1);
}