/* Common CSS for all pages */
html, body { min-height: 100%; }
body { display: flex; flex-direction: column; }
main { flex: 1 0 auto; }
footer { flex-shrink: 0; }
.glassmorphism {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}
.fade-up.appear {
    opacity: 1;
    transform: translateY(0);
}
.tool-card {
    transition: all 0.3s ease;
}
.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}
.calculator-card {
    transition: all 0.3s ease;
}
.calculator-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 25px -5px rgba(0, 0, 0, 0.1);
}