/* ============================================================
   BASE STYLES — Reset, Typography, Global
   ============================================================ */

/* ---- Reset ---- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    line-height: var(--lh-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ---- Selection ---- */
::selection {
    background-color: var(--color-accent);
    color: var(--color-white);
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: var(--lh-heading);
    color: var(--color-text);
}

h1 {
    font-size: var(--text-hero);
    font-weight: var(--weight-extrabold);
    line-height: var(--lh-hero);
}

h2 {
    font-size: var(--text-section);
    font-weight: var(--weight-bold);
}

h3 {
    font-size: var(--text-card);
    font-weight: var(--weight-semibold);
}

p {
    color: var(--color-text-secondary);
    line-height: var(--lh-body);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

/* ---- Images ---- */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ---- Section Base ---- */
.section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-dark {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.section-alt {
    background-color: var(--color-bg-alt);
}

/* ---- Utility Classes ---- */
.text-accent {
    color: var(--color-accent);
}

.text-white {
    color: var(--color-white);
}

.text-light {
    color: var(--color-text-light);
}

/* Prevent body scroll when mobile menu or lightbox is open */
body.no-scroll {
    overflow: hidden;
}