:root {
    /* Layout & Sizes */
    --width-max: 1600px;
    --width-ultrawide: 1900px;
    --sidebar-width: 320px;
    --sidebar-width-wide: 330px;
    --radius-lg: 12px;
    --radius-xl: 18px;
    --sidebar-offset: 80px;

    /* Typography */
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

    /* Animation */
    --transition-fast: 0.2s ease-out;
    --transition-slower: 0.35s ease-out;
    --transition-slowest: 0.5s ease-out;
}

/* Alpine.js utility to prevent flash of unstyled content */
[x-cloak] {
    display: none !important;
}

/* Ultrawide overrides */
@media (min-width: 2000px) {
    :root {
        --width-max: var(--width-ultrawide);
        --sidebar-width: var(--sidebar-width-wide);
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
    scroll-padding-top: 160px;
}

html {
    -webkit-text-size-adjust: 100%;
    scrollbar-width: thin;
    scrollbar-color: var(--muted) transparent;
    width: 100vw;
    overflow-x: hidden;
}

html,
body {
    height: 100%;
    overflow-x: hidden;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body.site {
    background: radial-gradient(circle at top, var(--bg-radial-start) 0, var(--bg) 45%, var(--bg-black) 100%);
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: cover;
    background-color: var(--bg-black);
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: normal;
}

hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

img,
video,
iframe,
svg {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Page loading */
html::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent);
    z-index: 10000;
    transform: translateX(-100%);
    transition: transform 0.4s ease-in;
    pointer-events: none;
}

html.is-loading::before {
    transform: translateX(-30%);
    animation: flux-loading-shimmer 2s infinite linear;
}

@keyframes flux-loading-shimmer {
    0% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(-10%);
    }
    100% {
        transform: translateX(0%);
        opacity: 0;
    }
}

html.is-loading body {
    opacity: 0.6;
    transition: opacity 0.3s ease;
    cursor: wait;
}

/* Layout */
.site-main {
    flex: 1;
    min-width: 0;
}

.site-header {
    border-bottom: 1px solid var(--border);
    background: linear-gradient(90deg, var(--bg), var(--bg-header-end));
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-header);
}

.header-inner {
    width: 100%;
    max-width: var(--width-max);
    margin: 0 auto;
    padding: calc(0.75rem + 4px) 1rem 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: max-width var(--transition-slower);
}

.header-inner a:hover {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-slowest);
    color: var(--accent);
}

/* Logo */
.logo a {
    text-decoration: none;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.logo-mark {
    color: var(--accent);
    font-size: 1.1rem;
}

.logo-text {
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-size: 0.95rem;
}

.logo-text-wrap {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-subtitle {
    font-weight: 400;
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    opacity: 1;
    margin-top: 0.15rem;
}

/* Navigation */
.main-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 1rem;
    align-items: baseline;
}

.main-nav a {
    position: relative;
    text-decoration: none;
    color: var(--muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding-bottom: 0.3rem;
    transition: color var(--transition-fast);
}

.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    height: 2px;
    width: 0;
    background: var(--accent);
    transition: width var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--text);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    border: none;
    background: transparent;
    padding: 0.25rem;
    cursor: pointer;
}

.nav-toggle-box {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
}

.nav-toggle-line {
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 999px;
    transition:
        transform 0.18s ease-out,
        opacity 0.18s ease-out;
}

/* Dropdown menus */
.dropdown-item {
    position: relative;
}

.dropdown-toggle {
    background: none;
    border: none;
    margin: 0;
    padding: 0 0 0.3rem 0;
    font-family: inherit;
    font-size: 0.9rem;
    line-height: inherit;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: color var(--transition-fast);
}

.dropdown-toggle:hover,
.dropdown-item[aria-expanded="true"] .dropdown-toggle {
    color: var(--text);
}

.dropdown-caret {
    transition: transform 0.2s ease;
}

.dropdown-caret.open {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    padding: 0.5rem 0;
    z-index: 50;
    flex-direction: column !important;
    gap: 0 !important;
}

.dropdown-menu li {
    width: 100%;
}

.dropdown-menu a {
    display: block;
    padding: 0.5rem 1.2rem;
    border-bottom: none;
    text-transform: none;
    letter-spacing: normal;
    border-radius: var(--radius-lg);
}

.dropdown-menu a:hover {
    background: var(--accent-soft);
    color: var(--accent);
}

.dropdown-menu a::after {
    display: none;
}

/* Body layout */
.site-body {
    width: 100%;
    max-width: var(--width-max);
    margin: 2rem auto 3rem;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1fr var(--sidebar-width);
    gap: 2rem;
    transition: max-width var(--transition-slower);
}

.site-sidebar {
    position: sticky;
    top: var(--sidebar-offset);
    align-self: start;
    min-width: 0;
    max-height: calc(100vh - var(--sidebar-offset) - 1rem);
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.site-sidebar::-webkit-scrollbar {
    display: none;
}

/* Cards */
.post-card,
.post-single,
.page-single,
.archive-year {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 1.6rem 1.8rem;
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-soft);
    margin-bottom: 1.4rem;
    max-width: 100%;
}

.post-card:hover {
    border-color: var(--accent-soft);
    transform: translateY(-2px);
    transition:
        transform var(--transition-fast),
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

/* Typography */
h1,
h2,
h3,
h4,
h5 {
    color: var(--text-white);
    margin-top: 0;
    line-height: 1.3;
}

.post-meta-top,
.post-meta-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.post-meta-top {
    margin-bottom: 1rem;
}

.post-meta-bottom nav {
    display: flex;
}

.post-title a,
.page-title {
    text-decoration: none;
    color: var(--text-white);
}

.post-title a:hover {
    transition: color var(--transition-slower);
    color: var(--accent);
}

h2.post-title {
    display: inline-flex;
    margin: 0;
}

/* Meta & tags */
.post-meta,
.post-tags,
.post-nav,
.archive-date {
    font-size: 0.85rem;
    color: var(--muted);
}

.post-nav {
    display: inline !important;
}

.meta-sep {
    margin: 0 0.5rem;
}

.post-tags {
    margin-bottom: 0.8rem;
}

.post-tags a {
    color: var(--accent);
    text-decoration: none;
}

.post-tags a:hover {
    text-decoration: underline;
}

/* Excerpt */
.post-excerpt {
    margin: 0.8rem 0 1.1rem;
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Post content */
.post-content,
.page-content {
    margin-top: 1.3rem;
    min-width: 0;
}

.post-content a,
.page-content a {
    color: var(--accent);
    word-break: normal;
    overflow-wrap: break-word;
}

.post-content a:hover,
.page-content a:hover {
    text-decoration: underline;
}

.post-content pre,
.post-content code {
    font-family: var(--font-mono);
}

.post-content pre {
    background: var(--bg-black);
    padding: 0.9rem 1rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-code);
    overflow-x: auto;
    white-space: pre;
    max-width: 100%;
}

/* Sidebar */
.sidebar-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.2rem 1.3rem;
    border: 1px solid var(--border-sidebar);
    box-shadow: var(--shadow-soft);
    margin-bottom: 1rem;
}

.sidebar-section h3 {
    margin-top: 0;
    margin-bottom: 0;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.sidebar-section:not(.social-buttons) div:not([style*="display: none"]) {
    margin-top: 0.7rem;
}

.sidebar-section ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sidebar-section li {
    margin-bottom: 0.4rem;
    display: flex;
    align-items: center;
    width: 100%;
}

.sidebar-section a {
    color: var(--text-sidebar);
    text-decoration: none;
    font-size: 0.9rem;
}

.sidebar-section li a {
    display: flex;
    align-items: center;
    width: 100%;
    min-width: 0;
}

.sidebar-section li a span:not(.lock-mark) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.sidebar-section li a .lock-mark {
    flex-shrink: 0;
    margin-right: 0.4rem;
    margin-left: 0;
}

.sidebar-section a:hover {
    color: var(--accent);
}

/* Archive */
.archive h1 {
    margin-bottom: 1.2rem;
}

.archive-year h2 {
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.4rem;
    margin-bottom: 0.8rem;
}

.archive-year ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.archive-year li {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 0.3rem;
}

.archive-date {
    min-width: 3rem;
    color: var(--muted);
}

/* Footer */
.site-footer {
    flex-shrink: 0;
    margin-top: auto;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.footer-inner {
    width: 100%;
    max-width: var(--width-max);
    margin: 0 auto;
    padding: 1rem 1.5rem 1.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--muted);
    font-size: 0.85rem;
    transition: max-width var(--transition-slower);
}

.footer-right a {
    color: var(--accent);
    text-decoration: none;
    margin-left: 0.8rem;
    font-size: 12px;
    font-style: italic;
}

.footer-right a:hover {
    text-decoration: underline;
}

/* Utility */
a {
    color: var(--accent);
}

a:hover {
    color: var(--accent-bright);
}

/* Encrypted post styles */
.encrypted-post {
    margin-top: 1.2rem;
    text-align: left;
}

.encrypted-message {
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 0.6rem;
}

.encrypted-form {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin: 2rem 0;
}

.encrypted-input-wrap {
    position: relative;
    width: auto;
}

.encrypted-input {
    width: 100%;
    min-width: 220px;
    max-width: 260px;
    border-radius: 999px;
    border: 1px solid var(--accent-soft);
    padding: 1.05rem 1rem 0.45rem;
    color: var(--text);
    outline: none;
    font-size: 0.9rem;
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background var(--transition-fast),
        transform var(--transition-fast);

    box-shadow: 0 0 0 1px transparent;
    background: var(--bg-black);
}

.encrypted-input::placeholder {
    color: transparent;
}

.encrypted-label {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.85rem;
    color: var(--muted);
    pointer-events: none;
    transition:
        top 0.15s ease-out,
        transform 0.15s ease-out,
        font-size 0.15s ease-out,
        letter-spacing 0.15s ease-out,
        color 0.15s ease-out;
}

.encrypted-input:focus + .encrypted-label,
.encrypted-input:not(:placeholder-shown) + .encrypted-label {
    top: 0.15rem;
    transform: none;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
}

.encrypted-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--focus-ring);
    background: var(--bg-black);
}

.encrypted-error {
    position: fixed;
    top: 1.25rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-tooltip);
    border-radius: 10px;
    padding: 0.7rem 1.3rem;
    border: 1px solid var(--accent);
    color: var(--text-white);
    font-size: 0.9rem;
    max-width: 90%;
    box-shadow: var(--shadow-tooltip);
    z-index: 9999;
    text-align: center;
}

.post-btn,
.encrypted-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--accent-soft);
    color: var(--accent);
    background: transparent;
    text-decoration: none;
    cursor: pointer;
    transition:
        background var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        opacity var(--transition-fast);
}

.post-btn:hover,
.encrypted-button:hover:not(:disabled) {
    background: var(--accent-soft);
    color: var(--text-white);
    box-shadow: 0 0 20px var(--focus-ring);
}

.post-btn:not(:first-child),
.encrypted-button:not(:first-child) {
    margin-left: 0.5rem;
}

.encrypted-button:disabled {
    opacity: 0.6;
    cursor: default;
    box-shadow: none;
}

.encrypted-button {
    padding: 0.75rem 1rem;
}

.lock-mark {
    display: inline-flex;
    align-items: center;
    color: var(--accent);
    vertical-align: middle;
    margin-left: 0.3rem;
}

.lock-icon {
    width: 1rem;
    height: 1rem;
    fill: currentColor;
}

.archive-year .lock-mark .lock-icon {
    width: 1.3rem;
    height: 1.3rem;
}

.post-title .lock-mark .lock-icon {
    width: 1.7rem;
    height: 1.7rem;
    margin-top: -0.2rem;
}

.sidebar-section li .lock-mark {
    margin-right: 0.1rem;
}

.post-shortlink {
    display: flex;
    font-size: 0.85rem;
    color: var(--muted);
}

.post-shortlink-label {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.75rem;
    margin-right: 0.4rem;
    color: var(--accent);
}

.post-shortlink a {
    color: var(--accent);
    text-decoration: none;
    word-break: break-all;
}

.post-shortlink a:hover {
    text-decoration: underline;
}

/* Palette switcher + custom UI */
.palette-switcher {
    width: 100%;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
}

.palette-switcher label {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.7rem;
    color: var(--muted);
}

.palette-switcher select {
    width: 100%;
    border-radius: 999px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 0.8rem;
    padding: 0.25rem 0.7rem;
    outline: none;
    cursor: pointer;
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background var(--transition-fast);
}

.palette-switcher select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-soft);
    background: var(--bg-alt);
}

.palette-controls {
    margin-top: 0.4rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px dashed var(--border);
}

.palette-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.palette-label {
    font-size: 0.8rem;
    color: var(--text-sidebar);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.palette-label.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    cursor: pointer;
}

.color-swatch-container {
    position: relative;
    width: 1.8rem;
    height: 1.8rem;
    border-radius: 50%;
    overflow: hidden;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: opacity 0.2s;
}

.color-input {
    opacity: 0;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    cursor: pointer;
    z-index: 2;
    padding: 0;
    margin: 0;
    border: none;
}

.color-swatch {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    pointer-events: none;
    z-index: 1;
}

.mode-group {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.auto-label {
    font-size: 0.75rem;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    cursor: pointer;
}

.mode-btn {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    transition: opacity 0.2s;
}

.mode-icon {
    transition: transform 0.2s;
}

.palette-input-col {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.palette-text-input {
    width: 100%;
    padding: 0.4rem;
    font-size: 0.85rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
    outline: none;
    transition: border-color 0.2s;
}

.palette-text-input:focus {
    border-color: var(--accent);
}

.palette-export-btn {
    width: 100%;
    margin-top: 0.4rem;
    padding: 0.4rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    cursor: pointer;
    border-radius: 4px;
    transition: border-color 0.2s;
}

.palette-export-btn:hover {
    border-color: var(--accent);
}

/* Figures */
figure {
    margin-left: 0;
    margin-right: 0;
    overflow: auto;
}

/* Social buttons */
.social-buttons {
    display: flex;
    gap: 0.6rem;
    align-items: center;
    flex-wrap: wrap;
}

.social-buttons .link {
    display: inline-flex;
    gap: 0.35rem;
    align-items: center;
    text-decoration: none;
    line-height: 1;
}

.social-buttons .label {
    font-size: 0.95em;
}

.social-icon-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
}

.social-icon {
    display: block;
    width: 100%;
    height: 100%;
    background-color: currentColor;
    -webkit-mask-image: var(--icon-url);
    mask-image: var(--icon-url);
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-size: contain;
    mask-size: contain;
}

/* Search */
.search-page .search-box {
    margin-bottom: 1.5rem;
}

.search-page .search-input-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
    width: 100%;
    max-width: 420px;
}

.search-page #local-search-input {
    width: 100%;
    max-width: 420px;
    padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text);
    font: inherit;
}

.search-page #local-search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-soft);
    background: var(--bg-alt);
}

.search-page .search-clear-btn {
    position: absolute;
    right: 0.65rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1.4rem;
    height: 1.4rem;
    border-radius: 999px;
    border: none;
    background: transparent;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    line-height: 1;
    padding: 0;
    cursor: pointer;
    transition:
        opacity 0.15s ease-out,
        background-color 0.15s ease-out;
}

.search-page .search-clear-btn:hover {
    background: var(--accent-soft);
}

.search-page .search-results .search-result + .search-result {
    margin-top: 1.25rem;
}

/* Spotify embed */
.spotify-embed-inline {
    background: transparent;
    border: none;
    padding: 0;
    margin-bottom: 12px;
}

.spotify-embed-inline iframe {
    display: block;
    width: 100%;
    height: 80px;
}

.post-content p > .spotify-embed-inline {
    display: inline-block;
    margin: 0;
}

.post-content p:has(.spotify-embed-inline) {
    margin-top: 1rem;
    margin-bottom: 1rem;
}

/* Other embeded media */
.video-embed-container {
    margin-bottom: 12px;
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
}

.video-embed-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Table of contents */
.post-toc {
    margin: 1.5rem 0 0;
}

.post-toc-toggle {
    width: 100%;
    justify-content: space-between;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    font-weight: 700;
}

.post-toc-content {
    background: var(--bg-black);
    border: 1px solid var(--border-code);
    border-radius: var(--radius-lg);
    padding: 1.2rem 1.5rem;
    margin-top: 0.8rem;
    font-size: 0.95rem;
}

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

.toc-item {
    margin-bottom: 0.4rem;
}

.toc-child {
    list-style: none;
    padding-left: 1.2rem;
    margin-top: 0.4rem;
}

.toc-link {
    text-decoration: none;
    color: var(--muted);
    transition: color var(--transition-fast);
}

.toc-link:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* Reading progress bar */
.reading-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--accent);
    z-index: 999;
    transition: width 0.1s ease-out;
    pointer-events: none;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Back to top button */
.back-to-top-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 98;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    border: 1px solid var(--accent-soft);
    background: var(--bg-card);
    color: var(--accent);
    box-shadow: var(--shadow-soft);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition:
        transform var(--transition-fast),
        background var(--transition-fast),
        color var(--transition-fast),
        border-color var(--transition-fast),
        opacity var(--transition-fast);
}

.back-to-top-btn:hover {
    transform: translateY(-3px);
    background: var(--accent-soft);
    color: var(--text-white);
    border-color: var(--accent);
    box-shadow: 0 5px 15px var(--focus-ring);
}

/* Clickable header links */
.headerlink {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease-in-out;
    position: relative;
    display: inline-block;
    color: var(--accent-muted) !important;
}

.headerlink:hover {
    color: var(--accent) !important;
}

.headerlink:hover::before {
    content: "#";
    position: absolute;
    left: -0.8em;
    top: 0;
    color: var(--accent-muted);
    font-weight: normal;
    opacity: 0.6;
}

/* Desktop sticky ToC container (hidden by default) */
.post-toc-desktop {
    display: none;
    font-size: 0.9rem;
}

.post-toc-desktop .toc-title {
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: var(--text-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.8rem;
}

.post-toc-desktop .toc {
    border-left: 2px solid var(--border);
    padding-left: 1rem;
}

.post-toc-desktop .toc-item {
    margin-bottom: 0.4rem;
}

.post-toc-desktop .toc-link {
    display: block;
    line-height: 1.3;
    padding: 0.2rem 0;
    opacity: 0.8;
}

.post-toc-desktop .toc-link.active {
    color: var(--accent);
    opacity: 1;
    font-weight: 600;
    transform: translateX(4px);
    transition: all var(--transition-fast);
}

/* Image gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.gallery-grid br {
    display: none;
}

.gallery-item {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    background: var(--bg-card);
}

.gallery-item img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    margin: 0;
    transition: transform var(--transition-fast);
    z-index: 1;
    cursor: pointer;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-tag {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    z-index: 10;
    pointer-events: none;
    backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity 0.2s;
    max-width: 85%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gallery-item:hover .gallery-tag {
    opacity: 1;
}

/* Lightbox */
.lightbox-container {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.95);
    padding: 2rem;
    cursor: zoom-out;
    backdrop-filter: blur(5px);
}

.lightbox-img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    cursor: default;
    animation: zoomIn 0.2s ease-out;
}

@keyframes zoomIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    cursor: pointer;
    transition:
        background 0.2s,
        transform 0.2s;
}

.lightbox-close svg {
    width: 1.5rem;
    height: 1.5rem;
    stroke-width: 2.5;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.lightbox-loader {
    width: 48px;
    height: 48px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-bottom-color: #fff;
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10001;
}

@keyframes rotation {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Link preview tooltip */
.link-preview-tooltip {
    position: fixed;
    z-index: 1000;
    width: 280px;
    background: var(--bg-card);
    border: 1px solid var(--accent-soft);
    border-radius: var(--radius-lg);
    padding: 1rem;
    box-shadow: var(--shadow-tooltip);
    pointer-events: none;
    font-size: 0.85rem;
}

.link-preview-tooltip strong {
    display: block;
    color: var(--accent);
    margin-bottom: 0.4rem;
}

.link-preview-tooltip p {
    margin: 0;
    color: var(--text-light);
    line-height: 1.4;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--muted);
    border-radius: 4px;
    border: 2px solid transparent;
    background-clip: content-box;
    opacity: 0.5;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
    opacity: 1;
}

/* Responsive */
@media (max-width: 900px) {
    :root {
        --sidebar-offset: 0;
    }

    .site-body {
        grid-template-columns: minmax(0, 100%);
        gap: 3rem;
    }

    .site-sidebar {
        position: static;
        width: 100%;
        margin: 0;
        text-align: left;
        max-height: none;
        overflow: visible;
    }

    .sidebar-section {
        text-align: left;
    }
}

@media (max-width: 600px) {
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.8rem 1.2rem;
    }

    .main-nav a {
        padding: 0.5rem;
    }

    .header-inner {
        padding: 1rem;
    }

    .main-nav ul {
        gap: 0.8rem;
    }

    .site-body {
        margin: 1.5rem auto 2rem;
        padding: 0 1rem;
        gap: 2rem;
    }

    .post-card,
    .post-single,
    .page-single,
    .archive-year {
        padding: 1.2rem;
        border-radius: var(--radius-lg);
    }

    h1 {
        font-size: 1.6rem;
    }
    h2 {
        font-size: 1.4rem;
    }

    .post-meta-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .footer-inner {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-right a {
        margin: 0 0.5rem;
    }

    .encrypted-form {
        flex-direction: column;
        width: 100%;
    }

    .encrypted-input-wrap,
    .encrypted-button {
        width: 100%;
        max-width: 100%;
    }

    .encrypted-input {
        max-width: 100%;
    }

    .headerlink:hover::before {
        display: none;
    }
}

@media (min-width: 769px) {
    .main-nav {
        display: block;
    }

    .main-nav ul {
        flex-direction: row;
    }

    .nav-toggle {
        display: none;
    }
}

@media (max-width: 768px) {
    .header-inner {
        position: relative;
    }

    .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-left: auto;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        background: var(--bg-alt);
        border-top: 1px solid var(--border);
        padding: 0 0 0.75rem;
        display: none;
        z-index: 20;
        box-shadow: var(--shadow-header);
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }

    .main-nav.is-open {
        display: block;
    }

    .main-nav li {
        width: 100%;
    }

    .main-nav a {
        display: block;
        width: 100%;
        padding: 0.8rem 2rem;
        border-bottom: 1px solid var(--border);
    }

    .dropdown-item {
        width: 100%;
    }

    .dropdown-toggle {
        width: 100%;
        padding: 0.8rem 2rem;
        border-bottom: 1px solid var(--border);
        justify-content: space-between;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: transparent;
        padding: 0;
        border-bottom: 1px solid var(--border);
    }

    .dropdown-menu a {
        padding: 0.8rem 2rem 0.8rem 3rem;
        border-bottom: 1px solid var(--border-sidebar);
        font-size: 0.85rem;
    }

    .dropdown-menu a:last-child {
        border-bottom: none;
    }

    .nav-toggle.is-open .nav-toggle-line:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    .nav-toggle.is-open .nav-toggle-line:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.is-open .nav-toggle-line:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
}

@media (min-width: 2000px) {
    .site-body {
        gap: 4rem;
        margin-top: 4rem;
    }

    .post-card,
    .post-single,
    .page-single,
    .archive-year {
        padding: 2.5rem 3rem;
        margin-bottom: 2rem;
    }

    h1 {
        font-size: 2.8rem;
    }
    h2 {
        font-size: 2.2rem;
    }

    .sidebar-section {
        padding: 2rem;
    }

    .sidebar-logo img {
        max-width: 240px;
        max-height: 240px;
    }

    .post-toc {
        display: none !important;
    }

    .post-body-grid {
        display: grid;
        grid-template-columns: minmax(0, 1fr) 240px;
        gap: 3rem;
        align-items: start;
        position: relative;
    }

    .post-toc-desktop {
        display: block;
        position: sticky;
        top: 6rem;
        max-height: calc(100vh - 8rem);
        overflow-y: auto;
        scrollbar-width: thin;
        margin-top: 0.5rem;
    }
}