/* ═══ Reset & Base Styles ═══ */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--gray-900);
    background-color: var(--surface-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    color: var(--gray-900);
}

p {
    margin-bottom: var(--space-4);
    color: var(--gray-600);
}

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

img, video {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

/* ─── Layout ─── */
.container {
    width: 100%;
    max-width: 1200px;
    padding: 0 var(--space-4);
    margin: 0 auto;
}

/* Skip to content */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 100;
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary);
    color: var(--surface-dark);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-md);
}
.skip-link:focus {
    top: var(--space-4);
}

/* Scroll progress bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--color-primary);
    z-index: calc(var(--z-header) + 1);
    transition: width 100ms linear;
}

/* ─── Scroll Animations ─── */
.service-card,
.blog-card,
.testimonial-card,
.campaign-card,
.gallery-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.service-card.animate-in,
.blog-card.animate-in,
.testimonial-card.animate-in,
.campaign-card.animate-in,
.gallery-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .service-card,
    .blog-card,
    .testimonial-card,
    .campaign-card,
    .gallery-item {
        opacity: 1;
        transform: none;
    }
}

/* ─── Responsive Container ─── */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
}