/* Explain: Base reset, typography, and utility styles for the app. */
* {
    box-sizing: border-box;
}

html {
    background: var(--background-color);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body {
    margin: 0;
    overflow-x: hidden;
    font-size: 1rem;
    line-height: 1.7;
    letter-spacing: 0.01em;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 500;
    margin: 0;
    color: var(--text-color);
}

p {
    margin: 0;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
}

button {
    font-family: inherit;
}

section[id] {
    scroll-margin-top: 88px;
}

::selection {
    background: var(--color-gold);
    color: var(--color-ink);
}

[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}

[data-reveal].is-visible {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    [data-reveal] { opacity: 1; transform: none; transition: none; }
}