/*  */
:root {
    --primary: #0ea5e9;
    --accent: #0284c7;
    --dark: #0f172a;
}

html { scroll-behavior: smooth; }

.nav-scroll {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.gradient-bg {
    background: linear-gradient(135deg, var(--primary), var(--accent));
}

.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.slide-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.btn-glow {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(14, 165, 233, 0.4);
}