@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400&display=swap');

/* ─── Variables ─── */
:root {
    --bg: #ffffff;
    --text: #111111;
    --text-secondary: #555555;
    --text-muted: #888888;
    --border: #dddddd;
    --border-subtle: #f0f0f0;
    --nav-bg: rgba(255, 255, 255, 0.85);
    --selection-bg: #111111;
    --selection-text: #ffffff;
}

[data-theme="dark"] {
    --bg: #1a1814;
    --text: #e0ddd8;
    --text-secondary: #9a9590;
    --text-muted: #5e5a55;
    --border: #2c2924;
    --border-subtle: #241f1a;
    --nav-bg: rgba(26, 24, 20, 0.85);
    --selection-bg: #e0ddd8;
    --selection-text: #1a1814;
}

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

::selection {
    background: var(--selection-bg);
    color: var(--selection-text);
}

/* ─── Base ─── */
html {
    font-size: 14.5px;
    scroll-behavior: smooth;
}

body {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.85;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* ─── Layout ─── */
.wrapper {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 2rem;
}

@media (max-width: 600px) {
    .wrapper {
        padding: 0 1.5rem;
    }
}

/* ─── Navigation ─── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-subtle);
}

.site-header .wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.2rem;
    padding-bottom: 1.2rem;
}

.site-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text);
    text-decoration: none;
    letter-spacing: 0.02em;
    text-transform: lowercase;
    transition: letter-spacing 0.3s ease;
}

.site-title:hover {
    letter-spacing: 0.06em;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.site-nav .page-link {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    text-transform: lowercase;
    position: relative;
}

.site-nav .page-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text);
    transition: width 0.3s ease;
}

.site-nav .page-link:hover::after {
    width: 100%;
}

.site-nav .page-link:hover {
    color: var(--text);
}

.site-nav .page-link--bordered {
    border: 1px solid var(--text);
    padding: 0.3rem 0.8rem;
    border-radius: 2px;
}

.site-nav .page-link--bordered::after {
    display: none;
}

.site-nav .page-link--bordered:hover {
    background: var(--text);
    color: var(--bg);
}

/* Theme toggle */
.theme-toggle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: border-color 0.3s ease;
    flex-shrink: 0;
}

.theme-toggle:hover {
    border-color: var(--text);
    color: var(--text);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    display: none;
    width: 14px;
    height: 14px;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

:root:not([data-theme="dark"]) .theme-toggle .icon-moon {
    display: block;
}

/* ─── Main content ─── */
.page-content {
    padding: 2.5rem 0;
    min-height: calc(100vh - 200px);
}

/* ─── About / Home page ─── */
.home {
    padding-top: 1rem;
}

.home .hero-section {
    margin-bottom: 2.5rem;
    position: relative;
}

.home .hero-quote {
    font-size: 1.6rem;
    font-weight: 300;
    font-style: italic;
    line-height: 1.5;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.home .hero-attribution {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 400;
}

.home .doodle-hero {
    position: absolute;
    top: -10px;
    right: -20px;
    width: 50px;
    height: 50px;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

.home .about-content {
    margin-top: 2rem;
}

.home .about-content p {
    margin-bottom: 1rem;
    color: var(--text);
}

@media (min-width: 601px) {
    .home .about-content p {
        text-align: justify;
    }
}

.home .favorite-essays {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.home .section-heading {
    font-size: 0.88rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.home .favorite-essays ul {
    list-style: none;
    padding: 0;
}

.home .favorite-essays li {
    padding: 0.4rem 0;
}

.home .favorite-essays a {
    color: var(--text);
    text-decoration: none;
    font-weight: 400;
    position: relative;
}

.home .favorite-essays a::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text);
    transition: width 0.3s ease;
}

.home .favorite-essays a:hover::after {
    width: 100%;
}

.home .favorite-essays .essay-date {
    color: var(--text-muted);
    font-size: 0.78rem;
    margin-left: 0.5rem;
}

/* ─── Essays page ─── */
.essays-page {
    padding-top: 0.5rem;
}

.essays-page .page-heading {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.essays-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.essays-list li {
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--border-subtle);
}

.essays-list li:first-child {
    padding-top: 0;
}

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

.essay-link {
    display: block;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text);
    text-decoration: none;
    margin-bottom: 0.2rem;
    transition: letter-spacing 0.3s ease;
}

.essay-link:hover {
    letter-spacing: 0.02em;
}

.essay-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.essay-date {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.essay-reading-time {
    color: var(--text-muted);
    font-size: 0.68rem;
    font-weight: 500;
}

/* ─── Tags ─── */
.post-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.post-tag {
    font-size: 0.68rem;
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 2px;
    color: var(--text-muted);
    font-weight: 500;
}

.essay-tags {
    display: flex;
    gap: 0.3rem;
    flex-wrap: wrap;
}

.essay-tag {
    font-size: 0.6rem;
    padding: 0.1rem 0.4rem;
    border: 1px solid var(--border);
    border-radius: 2px;
    color: var(--text-muted);
}

/* ─── Post images ─── */
.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 2px;
    margin: 0.5rem 0;
}

/* ─── Post page ─── */
.post {
    padding-top: 0.5rem;
}

.post-header {
    margin-bottom: 2.5rem;
}

.post-title {
    font-size: 1.35rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 0.5rem;
}

.post-meta {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.post-content {
    line-height: 1.85;
}

.post-content p {
    margin-bottom: 1rem;
}

@media (min-width: 601px) {
    .post-content p {
        text-align: justify;
    }
}

.post-content h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.post-content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.8rem;
}

.post-content strong {
    font-weight: 600;
}

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

.post-content blockquote {
    border-left: 2px solid var(--border);
    padding-left: 1rem;
    margin: 1.5rem 0;
    color: var(--text-secondary);
    font-style: italic;
}

.post-content ul, .post-content ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.post-content li {
    padding: 0.15rem 0;
}

.post-content a {
    color: var(--text);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.post-content a:hover {
    color: var(--text-secondary);
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.5rem 0;
}

.post-nav {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
}

.post-nav a {
    color: var(--text-secondary);
    font-size: 0.78rem;
    text-decoration: none;
}

.post-nav a:hover {
    color: var(--text);
}

/* ─── Footer ─── */
.site-footer {
    padding: 2rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.78rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.footer-left,
.footer-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-right {
    margin-left: auto;
}

.site-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: letter-spacing 0.3s ease;
}

.site-footer a:hover {
    letter-spacing: 0.04em;
    color: var(--text);
}

.footer-doodle {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.site-footer:hover .footer-doodle {
    transform: rotate(90deg);
}

@media (max-width: 500px) {
    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
    }
    .footer-right {
        margin-left: 0;
    }
}

/* ─── Doodles ─── */
.doodle {
    stroke: var(--text);
    fill: none;
    stroke-width: 0.5;
}

[data-theme="dark"] .doodle {
    stroke: var(--text);
}

.doodle-draw {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: draw 0.8s ease forwards;
}

@keyframes draw {
    to { stroke-dashoffset: 0; }
}

/* ─── Scroll reveal ─── */
.reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── 404 ─── */
.not-found {
    padding: 4rem 0;
    text-align: center;
}

.not-found p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.not-found a {
    color: var(--text);
    text-decoration: underline;
}