@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;1,6..72,400;1,6..72,500&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;1,8..60,400&family=DM+Sans:wght@400;500;600&display=swap');

/* ================================================================
   DESIGN SYSTEM — "Demo 5" staging theme
   Original production CSS preserved as style.css for rollback.
   ================================================================ */
:root {
    --bg: #111110;
    --surface: #1a1a18;
    --text: #c8c5bc;
    --text-strong: #efede8;
    --accent: #c9a96e;
    --muted: #6b6862;
    --rule: rgba(255, 255, 255, 0.06);

    --font-display: 'Newsreader', Georgia, serif;
    --font-body: 'Source Serif 4', Georgia, serif;
    --font-ui: 'DM Sans', system-ui, sans-serif;

    /* Legacy aliases so existing class names keep working */
    --bg-color: var(--bg);
    --text-color: var(--text);
    --heading-color: var(--text-strong);
    --accent-color: var(--accent);
    --border-color: var(--rule);
    --text-muted: var(--muted);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-optical-sizing: auto;
    line-height: 1.72;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    justify-content: center;
    padding: 0 24px;
    min-height: 100vh;
}

/* Subtle film-grain texture overlay */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 180px;
}

/* Supports both old .container and new .wrapper class names */
.container, .wrapper {
    max-width: 640px;
    width: 100%;
    padding: 80px 0 120px;
}

/* ================================================================
   HEADER & NAVIGATION
   ================================================================ */
header {
    margin-bottom: 72px;
    padding-bottom: 0;
    border-bottom: none;
}

/* Brand row: avatar + name */
.site-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
}

.site-brand .avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 1.5px solid var(--rule);
    flex-shrink: 0;
    transition: transform 0.25s ease;
}

.site-brand .avatar:hover {
    transform: scale(1.06) rotate(3deg);
}

.site-name {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    font-style: italic;
    color: var(--text-strong);
    letter-spacing: -0.02em;
    text-decoration: none;
}

nav {
    display: flex;
    gap: 6px;
    border-top: 1px solid var(--rule);
    padding-top: 16px;
    font-family: var(--font-ui);
    font-weight: 500;
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

nav a {
    font-family: var(--font-ui);
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 4px;
    transition: color 0.2s ease, background-color 0.2s ease;
    margin-right: 0;
    background-image: none;
}

nav a:hover {
    color: var(--text-strong);
    background-color: rgba(255, 255, 255, 0.03);
    text-decoration: none;
    background-size: 0;
}

nav a.active {
    color: var(--text-strong);
    background-color: rgba(255, 255, 255, 0.05);
    font-weight: 600;
}

/* ================================================================
   TYPOGRAPHY
   ================================================================ */
h1, h2, h3 {
    font-weight: 600;
    color: var(--text-strong);
    line-height: 1.3;
}

h1 {
    font-family: var(--font-display);
    font-size: 2.6rem;
    font-weight: 400;
    font-style: italic;
    color: var(--text-strong);
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-top: 0;
    margin-bottom: 40px;
}

h2 {
    font-family: var(--font-ui);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    margin-top: 48px;
    margin-bottom: 20px;
}

h3 {
    font-family: var(--font-body);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-strong);
    margin-top: 24px;
    margin-bottom: 6px;
}

p {
    margin-bottom: 24px;
}

strong {
    font-weight: 600;
    color: var(--text-strong);
}

em {
    font-style: italic;
}

/* ================================================================
   LINKS — Animated underline
   ================================================================ */
a {
    color: var(--text-strong);
    text-decoration: none;
    background-image: linear-gradient(var(--accent), var(--accent));
    background-size: 0% 1px;
    background-position: 0 100%;
    background-repeat: no-repeat;
    transition: background-size 0.3s ease, color 0.2s ease;
}

a:hover {
    background-size: 100% 1px;
    text-decoration: none;
    color: var(--text-strong);
}

/* ================================================================
   HORIZONTAL RULES
   ================================================================ */
hr {
    border: 0;
    height: 0;
    border-top: 1px solid var(--rule);
    margin: 40px 0;
}

/* ================================================================
   LISTS
   ================================================================ */
ul {
    padding-left: 22px;
    margin-bottom: 24px;
    list-style-type: disc;
}

li {
    margin-bottom: 10px;
    padding-left: 0;
}

li::marker {
    color: var(--muted);
}

ol {
    padding-left: 22px;
    margin-bottom: 24px;
}

/* ================================================================
   ARTICLE LISTING (thoughts/index.html)
   ================================================================ */
.article-list {
    list-style: none;
    padding-left: 0;
}

.article-list li {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 15px 0;
    border-bottom: 1px solid var(--rule);
    margin-bottom: 0;
    transition: padding-left 0.2s ease;
}

.article-list li:first-child {
    border-top: 1px solid var(--rule);
}

.article-list li:hover {
    padding-left: 6px;
}

.article-list li a {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--text);
    flex: 1;
    margin-right: 24px;
    background-image: none;
}

.article-list li:hover a {
    color: var(--text-strong);
}

.article-list .article-date {
    font-family: var(--font-ui);
    font-size: 0.78rem;
    color: var(--muted);
    white-space: nowrap;
    flex-shrink: 0;
    letter-spacing: 0.02em;
}

/* ================================================================
   INDIVIDUAL ARTICLE PAGE
   ================================================================ */
article .article-date {
    font-family: var(--font-ui);
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: -0.5rem;
    margin-bottom: 2.5rem;
}

.back-link {
    font-family: var(--font-ui);
    font-size: 0.85rem;
}

.back-link a {
    background-image: none;
}

/* ================================================================
   BOOK LIST
   ================================================================ */
.book-list {
    list-style: none;
    padding-left: 0;
}

.book-list li {
    padding: 24px 0;
    border-bottom: 1px solid var(--rule);
}

.book-list li:first-child {
    border-top: 1px solid var(--rule);
}

.book-list li:last-child {
    border-bottom: none;
}

.book-list h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 500;
    font-style: italic;
    margin-top: 0;
    margin-bottom: 2px;
}

/* Supports both <p class="book-author"> and <div class="book-author"> */
.book-author {
    font-family: var(--font-ui);
    font-size: 0.78rem;
    color: var(--muted);
    margin-bottom: 10px;
    letter-spacing: 0.04em;
}

.book-list p {
    margin-bottom: 0;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 600px) {
    .container, .wrapper {
        padding: 50px 0 80px;
    }

    h1 {
        font-size: 2rem;
    }

    header {
        margin-bottom: 52px;
    }

    nav {
        gap: 2px;
        flex-wrap: nowrap;
        overflow-x: auto;
        -ms-overflow-style: none;
        scrollbar-width: none;
    }

    nav::-webkit-scrollbar {
        display: none;
    }

    nav a {
        padding: 6px 8px;
        font-size: 0.78rem;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .article-list li {
        flex-direction: column;
        gap: 4px;
    }

    .article-list li a {
        margin-right: 0;
    }

    .article-list li:hover {
        padding-left: 0;
    }

    .site-brand .avatar {
        width: 40px;
        height: 40px;
    }

    .site-name {
        font-size: 1.3rem;
    }
}