:root {
    --font-sans: "Chirp", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --font-mono: "SFMono-Regular", "Cascadia Code", Consolas, monospace;

    --color-bg:        #000000;
    --color-surface:   #0f0f0f;
    --color-card:      #16181c;
    --color-border:    #2f3336;
    --color-border-subtle: #1d1f23;

    --color-ink:       #e7e9ea;
    --color-muted:     #71767b;
    --color-hint:      #3e4144;

    --color-accent:    #1d9bf0;
    --color-accent-hover: #1a8cd8;
    --color-accent-dim: rgb(29 155 240 / 0.12);

    --color-like:      #f91880;
    --color-verified:  #1d9bf0;
}

* { box-sizing: border-box; }

::selection {
    background: rgb(29 155 240 / 0.3);
    color: #fff;
}

html {
    min-height: 100%;
    scroll-behavior: smooth;
    background: var(--color-bg);
    color: var(--color-ink);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    min-height: 100vh;
    margin: 0;
    font-family: var(--font-sans), serif;
    background: var(--color-bg);
    font-size: 15px;
    line-height: 1.5;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 150ms ease;
}
a:hover { color: var(--color-accent-hover); }

h1, h2, h3, h4, h5, h6 {
    color: var(--color-ink);
    text-wrap: balance;
}


.shell {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    width: 100%;
    max-width: 600px;
    min-height: 100vh;
    margin-inline: auto;
    border-inline: 1px solid var(--color-border);
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0 1rem;
    height: 53px;
    border-bottom: 1px solid var(--color-border);
    background: rgb(0 0 0 / 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
    flex: 1;
}

.avatar {
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
    border-radius: 9999px;
    object-fit: cover;
    transition: opacity 150ms ease;
}
.avatar:hover { opacity: 0.85; }

.brand-title {
    color: var(--color-ink);
    font-size: 1rem;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.brand-path {
    display: none;
    font-size: 0.8125rem;
    color: var(--color-muted);
    margin-top: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    position: relative;
    padding: 0 1.25rem;
    height: 53px;
    display: flex;
    align-items: center;
    color: var(--color-muted);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 150ms ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px 2px 0 0;
    transition: width 200ms ease;
}

.nav-link:hover {
    color: var(--color-ink);
    text-decoration: none;
}

.nav-link:hover::after {
    width: 60%;
}

.social-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    justify-content: flex-end;
    flex: 1;
}

.social-link {
    display: grid;
    width: 2.25rem;
    height: 2.25rem;
    place-items: center;
    border-radius: 9999px;
    color: var(--color-muted);
    text-decoration: none;
    transition: background 150ms ease, color 150ms ease;
}

.social-link:hover {
    background: var(--color-accent-dim);
    color: var(--color-accent);
    text-decoration: none;
}

.social-icon {
    width: 1.125rem;
    height: 1.125rem;
}

.topbar-balance { display: none; }

.stage {
    display: flex;
    flex-direction: column;
}

.article-frame {
    padding: 0;
    border-bottom: 1px solid var(--color-border);
}

.article-frame::before {
    content: none;
}
.article-frame::after {
    content: none;
}

.content {
    max-width: none;
    color: var(--color-ink);
    font-size: 0.9375rem;
    line-height: 1.5;
    padding: 1.25rem 1rem;
}

.content > *:first-child { margin-top: 0; }
.content > *:last-child  { margin-bottom: 0; }

.content h1 {
    font-size: 1.375rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-ink);
    margin: 0 0 1rem;
    padding-bottom: 0.875rem;
    border-bottom: 1px solid var(--color-border-subtle);
}

.content h2 {
    margin: 2rem 0 0.625rem;
    padding-top: 0;
    border-top: none;
    color: var(--color-ink);
    font-size: 1.125rem;
    font-weight: 700;
}

.content h3 {
    margin: 1.5rem 0 0.5rem;
    color: var(--color-ink);
    font-size: 1rem;
    font-weight: 700;
}

.content h4 {
    margin: 1.25rem 0 0.375rem;
    color: var(--color-ink);
    font-size: 0.9375rem;
    font-weight: 700;
}

.content p {
    margin-block: 1rem;
    color: var(--color-ink);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.content strong {
    color: var(--color-ink);
    font-weight: 700;
}

.content em {
    color: var(--color-ink);
}

.content ul,
.content ol {
    margin-block: 0.875rem;
    padding-left: 1.5rem;
    color: var(--color-ink);
}

.content li + li { margin-top: 0.375rem; }

.content ul { list-style: disc; }
.content ul li::marker { color: var(--color-accent); }
.content ol { list-style: decimal; }
.content ol li::marker { color: var(--color-muted); }
.content li { padding-left: 0.25rem; }

.content blockquote {
    margin: 1.25rem 0;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 0.875rem 1rem;
    color: var(--color-muted);
    background: var(--color-card);
    font-size: 0.9375rem;
    line-height: 1.5;
}

.content blockquote p {
    color: var(--color-muted);
    margin: 0;
}

.content code {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 0.1em 0.4em;
    color: var(--color-accent);
    font-family: var(--font-mono), serif;
    font-size: 0.875em;
}

.content pre {
    margin-block: 1.25rem;
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-card);
    padding: 1rem;
}

.content pre code {
    border: 0;
    background: transparent;
    padding: 0;
    color: var(--color-ink);
    font-size: 0.8125rem;
    line-height: 1.75;
}

.content hr {
    margin-block: 1.5rem;
    border: 0;
    border-top: 1px solid var(--color-border);
}

.content img {
    width: 100%;
    margin-block: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    object-fit: cover;
}

.content table {
    width: 100%;
    margin-block: 1.25rem;
    border-collapse: collapse;
    font-size: 0.875rem;
    text-align: left;
}

.content th {
    border-bottom: 1px solid var(--color-border);
    padding: 0.625rem 0.75rem;
    color: var(--color-muted);
    font-weight: 700;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.content td {
    border-bottom: 1px solid var(--color-border-subtle);
    padding: 0.625rem 0.75rem;
    color: var(--color-ink);
}

.content tr:last-child td { border-bottom: none; }

.post-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem 0.75rem;
    border-top: 1px solid var(--color-border-subtle);
    margin-top: 0.25rem;
}

.post-action {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.625rem;
    border-radius: 9999px;
    color: var(--color-muted);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: background 150ms ease, color 150ms ease;
    border: none;
    background: none;
    text-decoration: none;
}

.post-action:hover {
    background: var(--color-accent-dim);
    color: var(--color-accent);
}

.post-action svg {
    width: 1.125rem;
    height: 1.125rem;
}


.footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    border-top: 1px solid var(--color-border);
    padding: 1rem;
    color: var(--color-muted);
    font-size: 0.8125rem;
}

.footer-line {
    height: 1px;
    flex: 1;
    background: var(--color-border);
}


@media (min-width: 640px) {
    .shell {
        max-width: 720px;
    }

    .brand-path {
        display: block;
    }

    .topbar-balance {
        display: block;
    }

    .content {
        padding: 1.5rem;
    }

    .content h1 {
        font-size: 1.625rem;
    }
}

@media (min-width: 1024px) {
    .shell {
        margin-inline: auto;
    }
}