/* Explain: Base reset and typography defaults, plus utility classes. */
* {
    box-sizing: border-box;
}

html {
    background: var(--background-color);
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Glassmorphism utilities */
.glass-panel {
    background: rgba(17, 17, 26, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Premium glow on buttons */
.btn-glow {
    box-shadow: 0 0 15px rgba(0, 122, 255, 0.4);
    transition: all 0.3s ease;
}
.btn-glow:hover {
    box-shadow: 0 0 25px rgba(0, 122, 255, 0.7);
    transform: translateY(-2px);
}