/* === Caffiney — Design Tokens === */
:root {
    --color-bg: #F5F0EB;
    --color-bg-warm: #EDE7DF;
    --color-text: #2C2825;
    --color-text-secondary: #7A716A;
    --color-accent: #BF5B21;
    --color-accent-hover: #D4692D;
    --color-tag-bg: #E8DFD4;
    --color-tag-text: #6B5D52;
    --color-rule: #D6CFC7;
    --color-decoration: #BF5B21;

    --font-display: 'Libre Baskerville', Georgia, serif;
    --font-body: 'Karla', 'Helvetica Neue', Helvetica, sans-serif;

    --max-width: 640px;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 3.5rem;
    --space-xl: 5rem;
}

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

html {
    font-size: 17px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100' height='100' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
}

/* === Navigation === */
nav {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-md) var(--space-sm);
}

.nav-home {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: 0.01em;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-links a {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--color-accent);
}

/* === Hero === */
.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-sm) var(--space-lg);
    position: relative;
}

.hero-decoration {
    width: 32px;
    height: 3px;
    background: linear-gradient(135deg, var(--color-decoration), var(--color-accent-hover));
    border-radius: 2px;
    margin-bottom: var(--space-md);
}

.hero-tagline {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 400;
    line-height: 1.55;
    color: var(--color-text);
    font-style: italic;
}

/* === Posts Section === */
.posts {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-sm) var(--space-xl);
}

.posts h2 {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--color-rule);
}

/* === Post Preview === */
.post-preview {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-md);
    border-left: 2px solid transparent;
    transition: border-color 0.3s ease;
}

.post-preview:hover {
    border-left-color: var(--color-accent);
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.post-meta time {
    font-family: var(--font-body);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    letter-spacing: 0.03em;
}

.post-tag {
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-tag-text);
    background-color: var(--color-tag-bg);
    padding: 0.15em 0.6em;
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.post-preview h3 {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 400;
    line-height: 1.35;
    margin-bottom: var(--space-xs);
}

.post-preview h3 a {
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.2s ease;
}

.post-preview h3 a:hover {
    color: var(--color-accent);
}

.post-preview > p {
    font-family: var(--font-body);
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.read-more {
    display: inline-block;
    margin-top: var(--space-xs);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

.read-more:hover {
    color: var(--color-accent-hover);
}

/* === About Section === */
.about {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-sm) var(--space-xl);
    position: relative;
}

.about-marker {
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
    margin-bottom: var(--space-sm);
}

.about h2 {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.about p {
    font-family: var(--font-display);
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.about p:last-child {
    margin-bottom: 0;
}

/* === RSS Nav Link === */
.rss-nav {
    font-family: var(--font-body);
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border: 1px solid var(--color-rule);
    padding: 0.2em 0.55em;
    border-radius: 3px;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.rss-nav:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

/* === Blog Post Page === */
.post-header {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-sm) var(--space-md);
}

.post-header .post-meta {
    margin-bottom: var(--space-sm);
}

.post-header h1 {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 2rem;
    line-height: 1.3;
    color: var(--color-text);
}

.post-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-sm) var(--space-xl);
}

.post-content p {
    font-family: var(--font-display);
    font-size: 1.02rem;
    line-height: 1.85;
    margin-bottom: 1.4rem;
    color: var(--color-text);
}

.post-content em {
    font-style: italic;
}

.post-content strong {
    font-weight: 700;
}

.post-content blockquote {
    margin: var(--space-md) 0;
    padding-left: var(--space-md);
    border-left: 2px solid var(--color-accent);
    font-style: italic;
    color: var(--color-text-secondary);
}

.post-separator {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-sm);
    margin-bottom: var(--space-lg);
}

.post-separator hr {
    border: none;
    height: 1px;
    background-color: var(--color-rule);
}

.post-back {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-sm) var(--space-xl);
}

.post-back a {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

.post-back a:hover {
    color: var(--color-accent-hover);
}

/* === Footer === */
footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-sm);
    border-top: 1px solid var(--color-rule);
}

footer p {
    font-family: var(--font-body);
    font-size: 0.78rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.02em;
}

/* === Responsive === */
@media (max-width: 600px) {
    html {
        font-size: 16px;
    }

    .hero {
        padding-top: var(--space-lg);
    }

    .hero-tagline {
        font-size: 1.2rem;
    }

    .post-preview {
        padding-left: var(--space-sm);
    }

    .post-header h1 {
        font-size: 1.6rem;
    }

    nav {
        flex-direction: column;
        gap: var(--space-sm);
    }
}