/* base.css - master styles for douglasseo.com (design tokens + shared primitives) */

:root {
    /* Colors */
    --color-text: #333;
    --color-text-strong: #000;
    --color-muted: #666;
    --color-muted-light: #555;
    --color-border: #e5e5e5;
    --color-border-light: #e8e8e8;
    --color-border-divider: #c9c9c9;
    --color-link: #0066cc;
    --color-link-hover: #0052a3;
    --color-bg: #fff;

    /* Typography */
    --font-family-base: Georgia, serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.9rem;
    --font-size-xs: 0.85rem;
    --font-size-2xs: 0.8rem;
    --font-size-3xs: 0.75rem;
    --line-height-base: 1.6;
    --line-height-tight: 1.4;
    --line-height-loose: 1.7;
    --letter-spacing-wide: 0.1em;
    --letter-spacing-wider: 0.12em;
    --letter-spacing-widest: 0.15em;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 2.5rem;

    /* Transitions */
    --transition-fast: 0.1s;
    --transition-base: 0.3s;
}

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

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background: var(--color-bg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

header {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: bold;
    font-size: 1.2rem;
    text-decoration: none;
    color: var(--color-text);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--color-text);
    transition: color var(--transition-base);
}

nav a:hover {
    color: var(--color-link);
}

main {
    background: var(--color-bg);
    color: var(--color-text);
    position: relative;
}

footer {
    text-align: center;
    padding: 2rem 0;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

.footer-link {
    color: var(--color-text-strong);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.footer-link:hover {
    opacity: 0.7;
}

.card-footer {
    margin-top: auto;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

.read-more-link {
    color: var(--color-link);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

.read-more-link:hover {
    color: var(--color-link-hover);
    text-decoration: underline;
}

@media (max-width: 768px) {
    nav ul {
        gap: 1rem;
    }
}