/* 1. Modern CSS Reset */
*, *::before, *::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

/* 2. Document & Body Defaults */
html {
    scroll-behavior: smooth;
}

body {
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: #333;
    background-color: #fff;
}

/* 3. Media Defaults */
img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}

/* 4. Typography & Elements */
input, button, textarea, select {
    font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
    overflow-wrap: break-word;
}

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

/* 5. Utility Layout Classes */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.flex {
    display: flex;
    gap: 1rem;
}

.stack {
    display: grid;
    gap: 1.5rem;
}

/* 6. Accessibility */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

/* ── Site Styles ── */

header {
    background-color: #1a1a2e;
    color: #fff;
    padding: 1rem 2rem;
}

nav {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

main {
    padding: 4rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

main h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #1a1a2e;
}

main p {
    font-size: 1.1rem;
    color: #555;
}

footer {
    background-color: #f4f4f4;
    text-align: center;
    padding: 1.5rem;
    font-size: 0.9rem;
    color: #777;
    border-top: 1px solid #ddd;
}