:root {
    color-scheme: light;
    --bg: #ffffff;
    --surface: #ffffff;
    --surface-2: #f4f4f4;
    --ink: #000000;
    --muted: #5c5c5c;
    --line: #000000;
    --line-soft: #d4d4d4;
    --on-ink: #ffffff;
    --ink-hover: #222222;
    --hover-bg: #f2f2f2;
    --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    --mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #161616;
    --surface: #1c1c1c;
    --surface-2: #242424;
    --ink: #f2f2f2;
    --muted: #a0a0a0;
    --line: #f2f2f2;
    --line-soft: #3a3a3a;
    --on-ink: #161616;
    --ink-hover: #d8d8d8;
    --hover-bg: #242424;
}

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

html {
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--ink);
    font: 15px/1.6 var(--font);
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
}

h1,
h2,
p {
    margin-top: 0;
}

button,
input,
textarea {
    font: inherit;
}

button {
    border: 2px solid var(--ink);
    border-radius: 0;
    padding: 12px 16px;
    background: var(--ink);
    color: var(--on-ink);
    font: 700 12px/1 var(--mono);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.15s ease;
}

button:hover {
    background: var(--ink-hover);
}

button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

input,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--ink);
    border-radius: 0;
    background: var(--surface);
    color: var(--ink);
    outline: none;
}

input:focus,
textarea:focus {
    outline: none;
    box-shadow: 3px 3px 0 var(--ink);
}

input::placeholder,
textarea::placeholder {
    color: var(--muted);
}

input[type="search"]::-webkit-search-cancel-button {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background-color: var(--ink);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M1 1l10 10M11 1L1 11' stroke='black' stroke-width='2'/%3E%3C/svg%3E") center / contain no-repeat;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M1 1l10 10M11 1L1 11' stroke='black' stroke-width='2'/%3E%3C/svg%3E") center / contain no-repeat;
    cursor: pointer;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--ink);
    outline-offset: 2px;
}

label {
    display: block;
    margin-bottom: 6px;
    font: 600 10px/1 var(--mono);
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

small {
    color: var(--muted);
}

.flash {
    margin: 0 0 16px;
    padding: 10px 14px;
    border: 2px solid var(--ink);
    font: 12px/1.5 var(--mono);
}

.flash-success {
    background: var(--surface-2);
    color: var(--ink);
}

.flash-error {
    background: var(--ink);
    color: var(--on-ink);
}

.auth-page {
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: min(100%, 400px);
    padding: 30px;
    border: 2px solid var(--ink);
    background: var(--surface);
}

.auth-card h1 {
    margin-bottom: 20px;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.auth-card form {
    display: grid;
    gap: 16px;
}

.auth-card p {
    margin: 0;
}

.auth-card .flash {
    margin-bottom: 16px;
}

.auth-card button {
    width: 100%;
}

.layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    min-height: 100vh;
}

.sidebar {
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
    height: 100vh;
    padding: 22px 14px;
    border-right: 2px solid var(--ink);
    background: var(--bg);
}

.brand {
    padding: 0 10px;
    font: 700 12px/1 var(--mono);
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: block;
    padding: 9px 10px;
    color: var(--muted);
    font: 600 11px/1 var(--mono);
    letter-spacing: 0.12em;
    text-decoration: none;
    text-transform: uppercase;
}

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

.nav-item.is-active {
    background: var(--ink);
    color: var(--on-ink);
}

.content {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 28px;
    border-bottom: 2px solid var(--ink);
    background: var(--bg);
}

.topbar-user {
    color: var(--muted);
    font: 11px/1.4 var(--mono);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

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

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-toggle {
    padding: 8px 12px;
    border: 1px solid var(--ink);
    background: var(--bg);
    color: var(--ink);
    font: 600 10px/1 var(--mono);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.theme-toggle:hover {
    background: var(--ink);
    color: var(--on-ink);
}

.auth-page .theme-toggle {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 50;
}

.logout-form {
    margin: 0;
}

.logout-form button {
    padding: 8px 14px;
    border: 1px solid var(--ink);
    background: var(--bg);
    color: var(--ink);
}

.logout-form button:hover {
    background: var(--ink);
    color: var(--on-ink);
}

.main {
    width: 100%;
    padding: 32px 28px 64px;
}

.main h1 {
    margin-bottom: 22px;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.post-form {
    display: grid;
    gap: 16px;
    width: 100%;
    padding: 24px;
    border: 2px solid var(--ink);
    background: var(--surface);
}

.post-form p {
    margin: 0;
}

.post-form textarea {
    min-height: 190px;
    resize: vertical;
}

.post-form button {
    justify-self: start;
}

.char-count {
    display: block;
    margin-top: 6px;
    color: var(--muted);
    font: 11px/1.4 var(--mono);
}

.char-count.is-over {
    color: var(--ink);
    font-weight: 700;
}

.recent {
    margin-top: 32px;
}

.recent h2 {
    margin-bottom: 12px;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.recent h2 small {
    font: 11px/1.4 var(--mono);
    font-weight: 400;
    letter-spacing: 0;
    text-transform: none;
}

.list-tools {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
}

.list-tools input {
    flex: 1;
    min-width: 0;
}

.list-tools button {
    padding: 10px 14px;
}

.list-reset {
    color: var(--muted);
    font: 600 10px/1 var(--mono);
    letter-spacing: 0.1em;
    text-decoration: none;
    text-transform: uppercase;
    white-space: nowrap;
}

.list-reset:hover {
    color: var(--ink);
    text-decoration: none;
}

.post-list {
    display: grid;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.post-item {
    border: 2px solid var(--ink);
    background: var(--surface);
}

.post-item details {
    padding: 12px 16px;
}

.post-item summary {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    cursor: pointer;
    list-style: none;
}

.post-item summary::-webkit-details-marker {
    display: none;
}

.post-item summary strong {
    font-weight: 700;
    overflow-wrap: anywhere;
}

.post-item summary time {
    color: var(--muted);
    font: 10px/1.4 var(--mono);
    white-space: nowrap;
}

.post-meta {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.post-views {
    color: var(--muted);
    font: 10px/1.4 var(--mono);
    white-space: nowrap;
}

.post-delete-form {
    display: flex;
    justify-content: flex-end;
    margin: 0;
    padding: 0 16px 12px;
}

.post-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    padding: 0 16px 12px;
}

.post-actions .post-delete-form {
    padding: 0;
}

.post-edit-link {
    padding: 5px 9px;
    border: 1px solid var(--ink);
    color: var(--muted);
    font: 600 9px/1 var(--mono);
    letter-spacing: 0.1em;
    text-decoration: none;
    text-transform: uppercase;
}

.post-edit-link:hover {
    background: var(--ink);
    color: var(--on-ink);
    text-decoration: none;
}

.post-delete-button {
    padding: 5px 9px;
    border: 1px solid var(--ink);
    background: transparent;
    color: var(--muted);
    font: 600 9px/1 var(--mono);
    letter-spacing: 0.1em;
}

.post-delete-button:hover {
    background: var(--ink);
    color: var(--on-ink);
}

.post-body {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--ink);
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

@media (max-width: 760px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        height: auto;
        padding: 14px;
        border-right: 0;
        border-bottom: 2px solid var(--ink);
    }

    .nav {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .topbar {
        flex-wrap: wrap;
        padding: 12px 16px;
    }

    .topbar-user {
        font-size: 10px;
    }

    .topbar-actions {
        flex-wrap: wrap;
    }

    .main {
        padding: 22px 16px 48px;
    }

    .main h1 {
        font-size: 22px;
    }

    .post-form {
        padding: 18px;
    }

    .post-item summary {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .post-meta {
        flex-wrap: wrap;
        gap: 8px;
    }

    .list-tools {
        flex-wrap: wrap;
    }

    .list-tools input {
        flex-basis: 100%;
    }

    .post-actions {
        flex-wrap: wrap;
    }

    .pagination {
        flex-wrap: wrap;
    }

    .auth-page {
        padding: 16px;
    }

    .auth-card {
        padding: 22px;
    }
}

.public-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.public-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 28px;
    border-bottom: 2px solid var(--ink);
    background: var(--bg);
}

.public-brand {
    font: 700 12px/1 var(--mono);
    letter-spacing: 0.18em;
    text-decoration: none;
    text-transform: uppercase;
}

.public-brand:hover {
    text-decoration: none;
}

.public-main {
    width: min(100%, 760px);
    margin: 0 auto;
    padding: 40px 28px 72px;
}

.public-main h1 {
    margin-bottom: 22px;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.empty {
    color: var(--muted);
    font: 12px/1.6 var(--mono);
}

.feed {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.feed-item {
    border: 2px solid var(--ink);
    background: var(--surface);
}

.feed-link {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px;
    text-decoration: none;
}

.feed-link:hover {
    background: var(--hover-bg);
    text-decoration: none;
}

.feed-topic {
    margin: 0;
    font-size: 17px;
    font-weight: 700;
    overflow-wrap: anywhere;
}

.feed-date {
    color: var(--muted);
    font: 10px/1.4 var(--mono);
    white-space: nowrap;
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 24px;
    padding-top: 18px;
    border-top: 2px solid var(--ink);
}

.page-link {
    padding: 8px 12px;
    border: 1px solid var(--ink);
    font: 600 10px/1 var(--mono);
    letter-spacing: 0.1em;
    text-decoration: none;
    text-transform: uppercase;
}

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

.page-link.is-disabled {
    border-color: var(--line-soft);
    color: var(--muted);
    pointer-events: none;
}

.page-info {
    color: var(--muted);
    font: 11px/1 var(--mono);
}

.back-link {
    display: inline-block;
    margin-bottom: 22px;
    color: var(--muted);
    font: 600 10px/1 var(--mono);
    letter-spacing: 0.1em;
    text-decoration: none;
    text-transform: uppercase;
}

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

.post-full {
    padding: 26px;
    border: 2px solid var(--ink);
    background: var(--surface);
}

.post-full h1 {
    margin-bottom: 8px;
    overflow-wrap: anywhere;
}

.post-full-date {
    display: block;
    margin-bottom: 20px;
    color: var(--muted);
    font: 10px/1.4 var(--mono);
}

.post-full-body {
    padding-top: 20px;
    border-top: 1px solid var(--ink);
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

@media (max-width: 760px) {
    .public-header {
        padding: 12px 16px;
    }

    .public-main {
        padding: 26px 16px 56px;
    }

    .public-main h1 {
        font-size: 22px;
    }

    .feed-link {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .post-full {
        padding: 18px;
    }

    .post-full h1 {
        font-size: 22px;
    }

    .pagination {
        flex-wrap: wrap;
    }
}