:root {
    --bg: #0a0f18;
    --bg-soft: #101a2b;
    --panel: rgba(15, 22, 34, 0.9);
    --panel-alt: #121c2c;
    --panel-strong: #0d1624;
    --border: rgba(160, 186, 220, 0.18);
    --text: #edf3ff;
    --muted: #a5b6d3;
    --accent: #6ea8fe;
    --accent-strong: #8bb8ff;
    --chip: rgba(110, 168, 254, 0.14);
    --success: #7fe9a8;
    --shadow: rgba(0, 0, 0, 0.35);
}

body[data-theme="light"] {
    --bg: #edf3f9;
    --bg-soft: #edf4fb;
    --panel: rgba(255, 255, 255, 0.9);
    --panel-alt: #f5f8fc;
    --panel-strong: #ffffff;
    --border: rgba(32, 60, 97, 0.14);
    --text: #142033;
    --muted: #54657f;
    --accent: #2e7de9;
    --accent-strong: #1a5ec7;
    --chip: rgba(46, 125, 233, 0.1);
    --success: #1a8b5d;
    --shadow: rgba(27, 53, 78, 0.12);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background: radial-gradient(circle at top, rgba(110, 168, 254, 0.12), transparent 35%), var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
}

button,
input,
textarea,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

.forum-page-shell {
    width: min(1400px, calc(100% - 32px));
    margin: 32px auto;
    padding: 20px;
    background: rgba(8, 12, 20, 0.4);
    border: 1px solid var(--border);
    box-shadow: 0 18px 42px var(--shadow);
}

.forum-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 18px 22px;
    background: var(--panel);
    border: 1px solid var(--border);
}

.brand-block {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.brand {
    color: var(--text);
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -0.08em;
}

.brand-kicker {
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.68rem;
    font-weight: 700;
}

.forum-nav {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.forum-nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.theme-toggle,
.primary-button,
.ghost-button {
    border: 1px solid var(--border);
    border-radius: 999px;
    background: transparent;
    color: var(--text);
    padding: 10px 16px;
    transition: transform 0.15s ease, border-color 0.15s ease;
}

.primary-button {
    background: var(--accent);
    color: #fff;
    border-color: transparent;
}

.theme-toggle:hover,
.primary-button:hover,
.ghost-button:hover,
.theme-toggle:focus-visible,
.primary-button:focus-visible,
.ghost-button:focus-visible {
    transform: translateY(-1px);
    outline: none;
}

.forum-layout {
    display: grid;
    grid-template-columns: 290px minmax(0, 1fr) 260px;
    gap: 20px;
    margin-top: 20px;
}

.forum-sidebar,
.forum-main,
.forum-rightbar {
    background: var(--panel);
    border: 1px solid var(--border);
}

.forum-sidebar,
.forum-rightbar {
    padding: 18px 16px;
}

.forum-main {
    padding: 18px;
}

.panel-header {
    margin-bottom: 18px;
}

.eyebrow {
    margin: 0 0 6px;
    color: var(--muted);
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 700;
}

.panel-header h1,
.panel-header h2,
.panel-header h3,
.panel-header h4 {
    margin: 0;
    letter-spacing: -0.04em;
}

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.category-list {
    display: grid;
    gap: 12px;
}

.category-card {
    padding: 16px 14px;
    background: var(--panel-alt);
    border: 1px solid var(--border);
}

.category-card .category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.category-card .category-id {
    color: var(--muted);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
}

.category-card h3 {
    margin: 0 0 6px;
    font-size: 1.1rem;
}

.category-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
    font-size: 0.9rem;
}

.composer {
    padding: 18px;
    margin-bottom: 18px;
    background: var(--panel-alt);
    border: 1px solid var(--border);
}

.form-row {
    display: grid;
    gap: 8px;
    margin-bottom: 14px;
}

.form-row span {
    color: var(--muted);
    font-size: 0.76rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

input,
textarea,
select {
    width: 100%;
    padding: 12px 14px;
    background: var(--panel-strong);
    border: 1px solid var(--border);
    color: var(--text);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.composer-actions {
    display: flex;
    justify-content: flex-end;
}

.forum-toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(170px, 0.8fr) minmax(170px, 0.8fr);
    gap: 12px;
    margin-bottom: 18px;
}

.toolbar-field {
    display: grid;
    gap: 8px;
}

.toolbar-field span {
    color: var(--muted);
    font-size: 0.68rem;
    letter-spacing: 0.11em;
    text-transform: uppercase;
}

.thread-list {
    display: grid;
    gap: 16px;
}

.thread-pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    color: var(--muted);
}

.thread-pagination .pager-buttons {
    display: flex;
    gap: 8px;
}

.thread-pagination button {
    border: 1px solid var(--border);
    background: var(--panel-strong);
    color: var(--text);
    padding: 8px 10px;
    border-radius: 999px;
}

.empty-state {
    padding: 18px;
    background: var(--panel-alt);
    border: 1px dashed var(--border);
    color: var(--muted);
    text-align: center;
}

.thread-card {
    padding: 18px;
    background: var(--panel-alt);
    border: 1px solid var(--border);
}

.thread-card.featured {
    border-color: rgba(110, 168, 254, 0.4);
    box-shadow: inset 0 0 0 1px rgba(110, 168, 254, 0.18);
}

.thread-card.unread {
    border-color: rgba(127, 233, 168, 0.45);
    box-shadow: inset 0 0 0 1px rgba(127, 233, 168, 0.2);
}

.unread-pill {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(127, 233, 168, 0.12);
    color: var(--success);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.thread-detail-panel {
    margin-top: 22px;
    padding: 20px;
    background: var(--panel-alt);
    border: 1px solid var(--border);
}

.detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.detail-thread-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    margin-bottom: 20px;
    color: var(--muted);
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.detail-action {
    border: 1px solid var(--border);
    background: var(--panel-strong);
    color: var(--text);
    padding: 8px 12px;
    border-radius: 999px;
}

.thread-posts {
    display: grid;
    gap: 14px;
}

.forum-chat-panel {
    margin-top: 22px;
    padding: 18px;
    background: var(--panel-alt);
    border: 1px solid var(--border);
}

.chat-header {
    margin-bottom: 10px;
}

.chat-feed {
    display: grid;
    gap: 10px;
    max-height: 260px;
    overflow: auto;
    padding-right: 4px;
}

.chat-message {
    padding: 12px 14px;
    border: 1px solid var(--border);
    background: var(--panel-strong);
}

.chat-message.self {
    border-color: rgba(110, 168, 254, 0.4);
}

.chat-message-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.chat-message-author {
    color: var(--accent-strong);
    text-decoration: none;
    font-weight: 700;
}

.chat-message-body {
    margin: 0;
    line-height: 1.6;
}

.chat-message-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.chat-status {
    min-height: 20px;
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 0.78rem;
}

.chat-form {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.chat-form label {
    display: grid;
    gap: 8px;
}

.chat-form span {
    color: var(--muted);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.post-card {
    padding: 16px 14px;
    background: var(--panel-strong);
    border: 1px solid var(--border);
}

.post-card.is-reply {
    margin-left: 22px;
    border-left: 2px solid var(--accent);
}

.post-header {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.post-author {
    color: var(--accent-strong);
    text-decoration: none;
    font-weight: 700;
}

.post-meta {
    color: var(--muted);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.post-body {
    margin: 0;
    line-height: 1.7;
    color: var(--text);
}

.post-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 12px;
}

.reply-form {
    margin-top: 22px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
}

.reply-form label {
    display: grid;
    gap: 10px;
}

.reply-form span {
    color: var(--muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-size: 0.72rem;
}

.reply-target {
    color: var(--accent-strong);
}

.thread-meta-row,
.thread-author-row,
.thread-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.thread-tag,
.thread-id,
.thread-time,
.thread-account-id {
    color: var(--muted);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.thread-title {
    margin: 12px 0 8px;
    font-size: clamp(1.25rem, 2vw, 1.8rem);
    letter-spacing: -0.04em;
}

.thread-body {
    margin: 0;
    color: var(--text);
    line-height: 1.7;
}

.thread-author-row {
    justify-content: flex-start;
    margin-top: 14px;
}

.thread-author {
    color: var(--accent-strong);
    font-weight: 700;
    text-decoration: none;
}

.thread-account-id {
    margin-left: 6px;
}

.thread-footer {
    margin-top: 14px;
}

.reply-count {
    color: var(--muted);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.stats-box {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 18px;
}

.stats-box div {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 14px 10px;
    background: var(--panel-alt);
    border: 1px solid var(--border);
    text-align: center;
}

.stats-box strong {
    font-size: 1.2rem;
}

.stats-box span,
.mini-list h4,
.mini-list li {
    color: var(--muted);
}

.mini-list h4 {
    margin: 0 0 10px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.72rem;
}

.thread-status-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 999px;
    background: var(--chip);
    color: var(--accent-strong);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.reaction-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}

.reaction-button {
    border: 1px solid var(--border);
    background: var(--panel-alt);
    color: var(--text);
    padding: 6px 10px;
    border-radius: 999px;
}

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

.mini-list li {
    padding: 10px 12px;
    background: var(--panel-alt);
    border: 1px solid var(--border);
}

@media (max-width: 1080px) {
    .forum-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .forum-page-shell {
        width: min(100% - 16px, 100%);
        margin: 16px auto;
    }

    .forum-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .forum-nav {
        width: 100%;
        justify-content: space-between;
    }
}