/* CSS Variables */
:root {
    --color-primary: #000;
    --color-bg: #fff;
    --color-focus: #000;
    --font-title: 'ryo Display PlusN', ui-serif, serif;
    --font-body: 'TX-02', system-ui, sans-serif;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 2rem;
    --fs-5xl: 4rem;
    --space-05: 0.25rem;
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2rem;
    --space-6: 3rem;
    --space-8: 4rem;
    --gutter: var(--space-4);
}

@media (min-width: 48em) { :root { --gutter: var(--space-6); } }
@media (min-width: 64em) { :root { --gutter: var(--space-8); } }

/* Dark Theme */
:root.dark-theme {
    --color-primary: #fff;
    --color-bg: #000;
    --color-focus: #fff;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Font Faces */
@font-face {
    font-family: 'ryo Display PlusN';
    src: url('/fonts/RyoDispPlusN-SemiBold.woff2') format('woff2'),
         url('/fonts/RyoDispPlusN-SemiBold.otf') format('opentype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'TX-02';
    src: url('/fonts/TX-02-Thin.woff2') format('woff2'),
         url('/fonts/TX-02-Thin.ttf') format('truetype');
    font-weight: 200;
    font-style: normal;
    font-display: swap;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }

html {
    /* Always reserve scrollbar space so filtered sections (writing/design/art/links)
       don't change viewport width when their shorter content drops the scrollbar.
       Without this, the header recenters by ~7.5px mid-transition, causing the
       flying nav text to land off-target. */
    scrollbar-gutter: stable;
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--fs-base);
    font-weight: 200;
    line-height: 1.8;
    color: var(--color-primary);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* Layout */
.site-container {
    position: relative;
    display: grid;
    grid-template-rows: auto 1fr;
    min-height: 100vh;
}

.site-header {
    position: relative;
    text-align: center;
    padding: var(--gutter);
    padding-top: var(--space-2);
}

@media (min-width: 48em) { .site-header { padding-top: var(--space-3); margin-top: -2.5vh; } }
@media (min-width: 64em) { .site-header { padding-top: var(--space-4); } }
/* width:100% is load-bearing: without it these grid items collapse to their
   content width (auto margins override the default stretch), so .site-body's
   left edge — and the nav column inside it — shifts as the filtered feed's
   content width changes between home and each section. That makes the page jump
   sideways on filter and the nav-return animation land on a stale position.
   Pinning the width keeps the layout fixed across every surface. */
@media (min-width: 90em) { .site-header, .site-body { width: 100%; max-width: 1200px; margin: 0 auto; } }

.site-body {
    position: relative;
    padding: var(--gutter);
}

/* Header */
.header-title-wrapper {
    display: inline-flex;
    align-items: baseline;
    cursor: pointer;
}

.site-title, .header-nav-label {
    font-family: var(--font-title);
    font-size: clamp(var(--fs-2xl), 5.4vw, calc(var(--fs-5xl) * 0.9));
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.01em;
    transition: color 0.4s ease;
}

.site-title { margin: 0; }
.header-nav-label { white-space: nowrap; color: var(--color-primary); }

/* Navigation */
.nav-column {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: var(--space-05);
    margin-top: -4rem;
}

@media (min-width: 48em) { .nav-column { margin-top: calc(-6rem + 5vh); } }

.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    margin-top: calc(2 * (1.8rem * 1.4 + 0.5rem) + 0.25rem);
    display: flex;
    flex-direction: column;
    gap: var(--space-05);
}

.nav-item { margin: 0; }

.nav-link {
    font-family: var(--font-body);
    font-size: 1.8rem;
    font-weight: 300;
    line-height: 1.4;
    letter-spacing: -0.01em;
    color: var(--color-primary);
    text-decoration: none;
    display: block;
    position: relative;
    padding: var(--space-05) 0;
    transition: opacity 0.3s ease;
}

.nav-link:hover { -webkit-text-stroke: 0.4px currentColor; }
.nav-link:focus { outline: none; }
.nav-link:focus-visible::before {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: calc(-1 * var(--space-05));
    width: 3px;
    height: 1em;
    background: var(--color-focus);
}

.nav-link.hidden-for-animation { opacity: 0; }

/* Nav Accent SVG */
.nav-accent {
    width: auto;
    height: 72%;
    min-height: 252px;
    flex-shrink: 0;
    pointer-events: none;
    transition: filter 0.3s ease;
}

:root.dark-theme .nav-accent { filter: invert(1) hue-rotate(180deg); }

@media (min-width: 48em) { .nav-accent { height: 100%; margin-top: -10%; margin-left: -2.5%; } }

/* Content */
.content-column {
    margin-top: var(--space-4);
    padding-left: var(--gutter);
}

@media (min-width: 48em) {
    .site-body {
        display: flex;
        align-items: flex-start;
    }
    .nav-column {
        flex-shrink: 0;
    }
    .content-column {
        flex: 1;
        min-width: 0;
        margin-top: calc(-6rem + 5vh);
        padding-top: var(--space-05);
        padding-left: var(--space-4);
    }
}

@media (min-width: 64em) {
    .content-column {
        padding-left: var(--space-6);
    }
}

.content-datetime {
    font-size: var(--fs-sm);
    font-weight: 400;
    text-align: left;
    margin-bottom: var(--space-2);
    display: block;
    transition: color 0.4s ease;
}

@media (min-width: 48em) {
    .content-datetime {
        position: absolute;
        right: var(--gutter);
        top: calc(-1em - var(--space-2));
        text-align: right;
        margin-bottom: 0;
    }
}

/* Heading Wrapper & Back Button */
.heading-wrapper {
    position: relative;
}

.back-button {
    position: absolute;
    width: 40px;
    height: 40px;
    top: -40px;
    left: 0;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    z-index: 2;
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    transition: opacity 0.3s ease;
}

.back-button img { width: 100%; height: 100%; display: block; }

.back-button.visible {
    opacity: 1;
    pointer-events: auto;
}

.back-button:hover {
    transform: scale(1.1);
}

:root.dark-theme .back-button img { filter: invert(1); }

/* Latest Section */
.latest-heading {
    font-family: var(--font-title);
    font-size: clamp(var(--fs-2xl), 4vw, var(--fs-3xl));
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.01em;
    margin: 0 0 var(--space-4) 0;
    text-align: left;
    transition: color 0.4s ease;
}

.latest-entries {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.latest-entry {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-3);
    contain: layout style;
    cursor: pointer;
}

.latest-entry picture {
    display: block;
    width: 288px;
    min-width: 0;
    background: var(--color-bg);
    will-change: transform;
}

.latest-thumb {
    width: 100%;
    aspect-ratio: 288 / 180;
    object-fit: cover;
    display: block;
}

.latest-info {
    width: 288px;
    max-height: 180px;
    overflow: hidden;
    min-width: 0;
}

.latest-headline {
    font-family: var(--font-title);
    font-size: var(--fs-base);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.01em;
    margin: 0;
    transition: color 0.4s ease;
}

.latest-excerpt {
    font-family: var(--font-body);
    font-size: var(--fs-sm);
    font-weight: 200;
    line-height: 1.5;
    margin: 0;
    transition: color 0.4s ease;
}

/* Tags */
.latest-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin: 0.4rem 0;
}

.tag {
    font-family: var(--font-title);
    font-size: 0.7rem;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.01em;
    color: #fff;
    border-radius: 999px;
    padding: 0.15em 0.65em;
    display: inline-flex;
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid transparent;
    transition: filter 0.15s ease;
    opacity: 0;
    transform: translateY(4px);
}
.tag:hover { filter: brightness(1.25); }

/* TAG_STYLES generated by CMS */
:root {
    --tag-writing: #bd93f9; --tag-writing-bg: #6a4dba;
    --tag-design: #ff79c6; --tag-design-bg: #b8357f;
    --tag-art: #8be9fd; --tag-art-bg: #3a9fbf;
    --tag-links: #50fa7b; --tag-links-bg: #2ea35a
}
.tag[data-section="writing"] { background: var(--tag-writing-bg); --tag-border: var(--tag-writing); }
.tag[data-section="design"] { background: var(--tag-design-bg); --tag-border: var(--tag-design); }
.tag[data-section="art"] { background: var(--tag-art-bg); --tag-border: var(--tag-art); }
.tag[data-section="links"] { background: var(--tag-links-bg); --tag-border: var(--tag-links); }


:root.dark-theme .tag {
    background: transparent;
    color: #fff;
    border-color: var(--tag-border);
}

.latest-entry.hidden {
    opacity: 0;
    position: absolute;
    visibility: hidden;
    pointer-events: none;
}

@media (max-width: 47.999em) {
    .latest-entry {
        flex-direction: column;
    }
    .latest-entry picture {
        width: 100%;
        max-width: 288px;
    }
    .latest-thumb {
        width: 100%;
        height: auto;
        max-width: 288px;
    }
    .latest-info {
        width: 100%;
        max-width: 288px;
        max-height: none;
    }
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    /* Absolutely positioned within the full-width .site-container so it stays at
       the page's top-right corner AND scrolls away with the page. (Anchoring to
       the header instead would collapse it next to the wordmark at ≥90em, where
       the header shrinks to max-width:1200px and centers to content width.) */
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 0;
    border-radius: 50%;
    transition: transform 0.15s ease, background 0.3s ease;
}

.dark-mode-toggle:hover {
    transform: scale(1.1);
    background: rgba(128, 128, 128, 0.1);
}

.dark-mode-toggle:focus { outline: none; }
.dark-mode-toggle:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

.theme-icon {
    position: absolute;
    width: 24px;
    height: 24px;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.moon-icon { opacity: 1; transform: scale(1); }
.sun-icon { opacity: 0; transform: scale(0.5) rotate(-90deg); filter: invert(1); }

:root.dark-theme .moon-icon { opacity: 0; transform: scale(0.5) rotate(90deg); }
:root.dark-theme .sun-icon { opacity: 1; transform: scale(1) rotate(0deg); }

/* Flying Nav Animation */
.flying-nav-text {
    position: fixed;
    line-height: 1.1;
    letter-spacing: -0.01em;
    color: var(--color-primary);
    pointer-events: none;
    z-index: 1000;
    white-space: nowrap;
    transform-origin: left top;
    will-change: transform, opacity;
}


/* Article Expanded View */
.content-column.article-view .latest-heading {
    opacity: 0;
    pointer-events: none;
    margin-bottom: 0;
}

.content-column.article-view .latest-entries {
    gap: 0;
}

.content-column.article-view .latest-entry:not(.article-expanded) {
    opacity: 0;
    max-height: 0;
    margin: 0;
    padding: 0;
    pointer-events: none;
    overflow: hidden;
}

.latest-entry.article-expanded {
    flex-direction: column;
    gap: var(--space-3);
    max-height: none;
    overflow: visible;
}

.latest-entry.article-expanded picture {
    width: 100%;
    overflow: hidden;
}

.latest-entry.article-expanded .latest-thumb {
    width: 100%;
    height: auto;
    transform-origin: top left;
}

.latest-entry.article-expanded .latest-info {
    width: 100%;
    max-height: none;
    overflow: visible;
}

.latest-entry.article-expanded .latest-headline {
    opacity: 0;
    height: 0;
    margin: 0;
    overflow: hidden;
}

.latest-entry.article-expanded .latest-excerpt {
    opacity: 0;
}

.latest-entry.article-expanded .latest-tags {
    opacity: 0;
}

.latest-entry.article-expanded.reveal-text .latest-excerpt {
    opacity: 1;
    transition: opacity 0.4s ease;
}

.latest-entry.article-expanded.reveal-text .latest-tags {
    opacity: 1;
    margin-top: 0;
    transition: opacity 0.4s ease;
}

.content-column .heading-wrapper .latest-tags {
    margin: 0;
}

/* Transient Animation States */
.heading-hidden {
    opacity: 0 !important;
    transition: none !important;
}

/* Shimmer loading indicator for slow image loads */
@keyframes shimmer {
    from { background-position: 200% 0; }
    to { background-position: -200% 0; }
}

.latest-entry.article-expanded .latest-thumb.img-loading {
    background: linear-gradient(
        90deg,
        var(--color-bg) 0%,
        color-mix(in srgb, var(--color-primary) 5%, var(--color-bg)) 50%,
        var(--color-bg) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s ease infinite;
}

/* Article Body */
.article-body {
    display: none;
}

.latest-entry.article-expanded .article-body {
    display: block;
    margin-top: var(--space-3);
}

.latest-entry.article-expanded.reveal-text .article-body {
    opacity: 1;
    transition: opacity 0.4s ease;
}

.article-body p {
    margin: 0 0 var(--space-2) 0;
    line-height: 1.8;
}

.article-body h2 {
    font-family: var(--font-title);
    font-size: var(--fs-2xl);
    font-weight: 600;
    margin: var(--space-4) 0 var(--space-2) 0;
    line-height: 1.3;
}

.article-body h3 {
    font-family: var(--font-title);
    font-size: var(--fs-xl);
    font-weight: 600;
    margin: var(--space-3) 0 var(--space-2) 0;
    line-height: 1.3;
}

.article-body img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: var(--space-3) 0;
}

.article-body blockquote {
    border-left: 3px solid var(--color-primary);
    margin: var(--space-3) 0;
    padding: var(--space-1) var(--space-3);
    opacity: 0.85;
}

.article-body ul, .article-body ol {
    margin: var(--space-2) 0;
    padding-left: var(--space-4);
}

.article-body li {
    margin-bottom: var(--space-1);
}

.article-body a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.article-body a:hover {
    opacity: 0.7;
}

/* Accessibility */
*:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

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

/* Touch Targets */
@media (hover: none) and (pointer: coarse) {
    .nav-link {
        padding: var(--space-1) 0;
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}

/* Flying Layer */
#flying-layer { position: fixed; inset: 0; pointer-events: none; z-index: 9999; }

/* Print */
@media print {
    .dark-mode-toggle, .nav-accent { display: none; }
    .site-container { display: block; min-height: auto; }
    .content-column { position: static; max-width: 100%; }
}

.noscript-notice {
    padding: 2rem;
    font-family: sans-serif;
    line-height: 1.6;
    max-width: 38rem;
    margin: 0 auto;
}