/* main.css */

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

body {
    font-family: var(--font-text);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: normal; /* Instrument Serif is best normal */
    line-height: var(--leading-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); font-family: var(--font-text); font-weight: 500; }
h6 { font-size: var(--text-lg); font-family: var(--font-text); font-weight: 500; }

p {
    margin-bottom: var(--space-4);
    max-width: 65ch; /* Optimal reading measure */
}

a {
    color: var(--color-accent-primary);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-accent-secondary);
}

/* Layout Classes */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-16) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--space-24) 0;
    }
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-2 { grid-template-columns: 1fr; }
.grid-cols-3 { grid-template-columns: 1fr; }
.grid-cols-4 { grid-template-columns: 1fr; }

@media (min-width: 768px) {
    .grid-cols-2 { grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
    .grid-cols-3 { grid-template-columns: repeat(3, 1fr); gap: var(--space-8); }
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
}

@media (min-width: 1024px) {
    .grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Header */
.site-header {
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--space-4) 0;
    position: sticky;
    top: 0;
    background-color: rgba(247, 245, 240, 0.95);
    backdrop-filter: blur(4px);
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.brand-logo {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    text-decoration: none;
    color: var(--color-text-primary);
    line-height: 1;
}

.site-nav {
    display: flex;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.site-nav a {
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    color: var(--color-text-primary);
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-border-light);
    background-color: var(--color-bg-secondary);
    padding: var(--space-16) 0 var(--space-8);
    margin-top: var(--space-16);
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .footer-inner {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-brand {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    margin-bottom: var(--space-2);
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer-nav a {
    text-decoration: none;
    color: var(--color-text-secondary);
}

.footer-nav a:hover {
    color: var(--color-text-primary);
    text-decoration: underline;
}

.copyright {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* Editorial Specific Styles */
.editorial-lead {
    font-size: var(--text-xl);
    line-height: var(--leading-relaxed);
    color: var(--color-text-secondary);
    max-width: 45ch;
    margin-bottom: var(--space-8);
}

.meta-info {
    font-size: var(--text-sm);
    font-family: var(--font-text);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--space-2) 0;
    margin-bottom: var(--space-6);
}

/* Blockquotes */
blockquote {
    border-left: 2px solid var(--color-accent-primary);
    padding-left: var(--space-6);
    margin: var(--space-8) 0;
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    line-height: var(--leading-snug);
    color: var(--color-text-primary);
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-8) 0;
    font-size: var(--text-sm);
}

.data-table th,
.data-table td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.data-table th {
    font-weight: 600;
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--color-text-primary);
}

.data-table tr:hover td {
    background-color: rgba(0,0,0,0.02);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid var(--color-text-primary);
    background: transparent;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: var(--radius-none);
}

.btn-primary {
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
}

.btn-primary:hover {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

.btn-secondary:hover {
    background: var(--color-bg-secondary);
}

/* Utility */
.text-center { text-align: center; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}