/* ============================================================================
 *  /css/forum.css — Business forum styling for PTC Platform
 *  Uses theme variables: --primary, --accent, --background, --surface, --text-main, --radius
 * ========================================================================== */

/* ── Layout ─────────────────────────────────────────────────────────────── */
.forum-wrap { max-width: 1180px; margin: 1.25rem auto 3rem; padding: 0 1rem; }
.forum-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 1.25rem;
    align-items: start;
}
/* Main/aside unchanged */
@media (max-width: 960px) {
    .forum-grid { grid-template-columns: 1fr; }
    .forum-aside { position: static; }
}

/* ── Top toolbar (breadcrumb + actions) ─────────────────────────────────── */
.forum-toolbar {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: .75rem;
    margin-bottom: 1rem;
}
/* Breadcrumbs */
.forum-crumbs {
    font-size: .97rem; color: var(--text-muted);
    display: flex; align-items: center; gap: .35rem; flex-wrap: wrap;
    font-weight: 500;
}
.forum-crumbs a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    border-radius: 6px;
    padding: 0.1em 0.5em;
    transition: color 0.18s, background 0.18s;
}
.forum-crumbs a:hover {
    color: var(--accent);
    background: #eaf6f5;
}
.forum-crumbs .sep { color: #e6eaf1; }
.forum-crumbs .here { color: var(--text-main); font-weight: 700; }
.forum-actions { display: flex; gap: .5rem; flex-wrap: wrap; }

/* ── Buttons (forum-scoped) ─────────────────────────────────────────────── */
/* Buttons */
.forum-btn {
    display: inline-flex; align-items: center; gap: .4rem;
    padding: .65rem 1.2rem; border-radius: var(--radius);
    font-weight: 600; font-size: 1.01rem;
    border: 1.5px solid transparent; cursor: pointer; text-decoration: none;
    transition: background .18s, border-color .18s, color .18s, transform .05s;
    box-shadow: 0 2px 8px rgba(35,64,142,0.07);
    letter-spacing: 0.01em;
}
.forum-btn:active { transform: translateY(1px); }
.forum-btn--primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.forum-btn--primary:hover, .forum-btn--primary:focus {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.forum-btn--ghost {
    background: var(--surface);
    color: var(--text-main);
    border-color: #e6eaf1;
}
.forum-btn--ghost:hover, .forum-btn--ghost:focus {
    border-color: var(--primary);
    color: var(--primary);
}
.forum-btn--accent {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.forum-btn--accent:hover, .forum-btn--accent:focus {
    filter: brightness(1.07);
}

/* ── Stats strip ────────────────────────────────────────────────────────── */
.forum-stats-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: .75rem; margin-bottom: 1.25rem;
}
/* Stats strip */
.forum-stat {
    background: var(--surface);
    border: 1.5px solid #e6eaf1;
    border-radius: var(--radius);
    padding: 1.1rem 1.2rem;
    display: flex; flex-direction: column; gap: .15rem;
    box-shadow: 0 1px 8px rgba(35,64,142,0.06);
}
.forum-stat .label {
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-muted);
    font-weight: 700;
}
.forum-stat .value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    letter-spacing: 0.01em;
}
.forum-stat .sub   { font-size: .8rem; color: var(--text-muted); }
.forum-stat.is-accent .value { color: var(--accent); }

/* ── Category section ───────────────────────────────────────────────────── */
/* Category section */
.forum-category {
    background: var(--surface);
    border: 1.5px solid #e6eaf1;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 1.2rem;
    box-shadow: 0 1px 6px rgba(35,64,142,0.04);
}
.forum-category__head {
    display: flex; align-items: center; justify-content: space-between;
    gap: 1rem; padding: .85rem 1.2rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
}
.forum-category__head h2 { margin: 0; font-size: 1.08rem; font-weight: 700; letter-spacing: .01em; }
.forum-category__head .desc { font-size: .82rem; opacity: .92; }
.forum-category__head .lock { font-size: .74rem; background: rgba(255,255,255,.18); padding: .15rem .5rem; border-radius: 999px; }

/* ── Node row (sub-forum line) ──────────────────────────────────────────── */
.forum-nodes { display: flex; flex-direction: column; }
/* Node row */
.forum-node {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr) 120px minmax(0, 240px);
    gap: 1rem; align-items: center;
    padding: 1.05rem 1.2rem;
    border-top: 1.5px solid #e6eaf1;
    background: var(--background);
    transition: background 0.18s;
}
.forum-node:first-child { border-top: 0; }
.forum-node:hover { background: #f7f9fb; }
.forum-node__icon {
    width: 44px; height: 44px; border-radius: 50%;
    background: linear-gradient(135deg, #eaf6f5, #d8e7ff);
    color: var(--primary); display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 1.1rem;
    box-shadow: 0 1px 4px rgba(35,64,142,0.07);
}
.forum-node__body { min-width: 0; }
.forum-node__title {
    display: block; font-weight: 700; color: var(--text-main); text-decoration: none;
    font-size: 1.05rem; margin-bottom: .15rem;
    letter-spacing: 0.01em;
}
.forum-node__title:hover { color: var(--primary); }
.forum-node__desc { color: var(--text-muted); font-size: .87rem; line-height: 1.4; }
.forum-node__counts { text-align: center; font-size: .85rem; color: var(--text-secondary); }
.forum-node__counts strong { display: block; font-size: 1.09rem; color: var(--primary); font-weight: 700; }
.forum-node__last { font-size: .82rem; color: var(--text-muted); min-width: 0; }
.forum-node__last .t { display: block; color: var(--primary); font-weight: 600; text-decoration: none; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.forum-node__last .t:hover { text-decoration: underline; }
.forum-node__last .meta { font-size: .75rem; color: #94a3b8; }

@media (max-width: 720px) {
    .forum-node { grid-template-columns: 44px minmax(0, 1fr); }
    .forum-node__counts, .forum-node__last { grid-column: 2 / -1; }
    .forum-node__counts { text-align: left; }
}

/* ── Threads table (inside a node view) ─────────────────────────────────── */
/* Threads table */
.forum-threads {
    background: var(--surface);
    border: 1.5px solid #e6eaf1;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 1px 6px rgba(35,64,142,0.04);
}
.forum-threads__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 90px 90px 200px;
    gap: 1rem; padding: .85rem 1.2rem;
    background: #f7f9fb; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em;
    color: var(--text-muted); font-weight: 700; border-bottom: 1.5px solid #e6eaf1;
}
.forum-threads__head .c { text-align: center; }
.forum-thread {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 90px 90px 200px;
    gap: 1rem; align-items: center;
    padding: 1.05rem 1.2rem; border-top: 1.5px solid #e6eaf1;
    background: var(--background);
    transition: background 0.18s;
}
.forum-thread:first-child { border-top: 0; }
.forum-thread:hover { background: #f7f9fb; }
.forum-thread__title { display: flex; align-items: center; gap: .5rem; min-width: 0; }
.forum-thread__title a { color: var(--text-main); font-weight: 600; text-decoration: none; font-size: 1.01rem; }
.forum-thread__title a:hover { color: var(--primary); }
.forum-thread__title .meta { display: block; font-size: .78rem; color: #94a3b8; margin-top: .15rem; }
.forum-thread .c { text-align: center; font-size: .93rem; color: var(--text-secondary); font-weight: 600; }
.forum-thread__last { font-size: .82rem; color: var(--text-muted); min-width: 0; }
.forum-thread__last strong { color: var(--primary); }

@media (max-width: 720px) {
    .forum-threads__head { display: none; }
    .forum-thread { grid-template-columns: 1fr; gap: .35rem; }
    .forum-thread .c { text-align: left; font-size: .8rem; color: #64748b; font-weight: 500; }
    .forum-thread .c::before { content: attr(data-label) ': '; font-weight: 700; color: #475569; }
}

/* ── Thread badges/pills ────────────────────────────────────────────────── */
/* Thread badges/pills */
.forum-pill {
    display: inline-block; padding: .13rem .6rem; border-radius: 999px;
    font-size: .73rem; font-weight: 700; text-transform: uppercase; letter-spacing: .03em;
    background: #eaf6f5; color: var(--primary);
}
.forum-pill--pinned { background: #fff3cd; color: #8a6d00; }
.forum-pill--closed { background: #fde2e2; color: #b42318; }
.forum-pill--open   { background: #d1fadf; color: #027a48; }
.forum-pill--new    { background: #dbeafe; color: #23408e; }

/* ── Sidebar widgets ────────────────────────────────────────────────────── */
/* Sidebar widgets */
.forum-widget {
    background: var(--surface);
    border: 1.5px solid #e6eaf1;
    border-radius: var(--radius);
    padding: 1.2rem;
    box-shadow: 0 1px 6px rgba(35,64,142,0.04);
}
.forum-widget h3 {
    font-size: .87rem; text-transform: uppercase; letter-spacing: .05em;
    color: var(--text-muted); font-weight: 700; margin: 0 0 .65rem;
    padding-bottom: .5rem; border-bottom: 1.5px solid #e6eaf1;
}
/* Widget search */
.forum-widget__search input {
    width: 100%; padding: .65rem .85rem; border: 1.5px solid #e6eaf1;
    border-radius: var(--radius); font-size: 1.01rem; outline: none;
    background: var(--background);
    color: var(--text-main);
    transition: border-color .18s, box-shadow .18s;
}
.forum-widget__search input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--accent-light);
}

.forum-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: .55rem; }
.forum-list li { font-size: .85rem; line-height: 1.35; }
/* List links */
.forum-list a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 600;
    border-radius: 6px;
    padding: 0.1em 0.5em;
    transition: color 0.18s, background 0.18s;
}
.forum-list a:hover {
    color: var(--accent);
    background: #eaf6f5;
}
.forum-list .meta { display: block; font-size: .73rem; color: #94a3b8; }

.forum-top-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: .55rem; }
.forum-top-list li { display: flex; align-items: center; gap: .55rem; font-size: .88rem; }
/* Top posters avatar */
.forum-top-list .avatar {
    width: 30px; height: 30px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: .95rem; flex-shrink: 0;
    box-shadow: 0 1px 4px rgba(35,64,142,0.07);
}
.forum-top-list .name { font-weight: 600; color: var(--dark); }
.forum-top-list .count { margin-left: auto; font-size: .78rem; color: #64748b; font-weight: 600; }

/* ── Thread view ────────────────────────────────────────────────────────── */
/* Thread header */
.thread-header {
    background: var(--surface);
    border: 1.5px solid #e6eaf1;
    border-radius: var(--radius);
    padding: 1.2rem 1.5rem; margin-bottom: 1.2rem;
    display: flex; justify-content: space-between; align-items: flex-start; gap: 1.1rem; flex-wrap: wrap;
    box-shadow: 0 1px 6px rgba(35,64,142,0.04);
}
.thread-header h1 {
    margin: 0 0 .35rem;
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.25;
    letter-spacing: 0.01em;
}
.thread-header .meta { font-size: .89rem; color: var(--text-muted); display: flex; gap: .75rem; flex-wrap: wrap; }
.thread-header .pills { display: flex; gap: .35rem; flex-wrap: wrap; margin-bottom: .35rem; }
.thread-header .actions { display: flex; gap: .5rem; flex-shrink: 0; }

/* Post */
.post {
    background: var(--surface);
    border: 1.5px solid #e6eaf1;
    border-radius: var(--radius);
    margin-bottom: 1.1rem; overflow: hidden;
    display: grid; grid-template-columns: 200px minmax(0, 1fr);
    box-shadow: 0 1px 6px rgba(35,64,142,0.04);
}
.post__author {
    background: linear-gradient(180deg, #f7f9fb, #eaf6f5);
    padding: 1.2rem 1.1rem; border-right: 1.5px solid #e6eaf1;
    display: flex; flex-direction: column; align-items: center; text-align: center; gap: .4rem;
}
.post__avatar {
    width: 64px; height: 64px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 1.7rem;
    box-shadow: 0 2px 6px rgba(35,64,142,0.08);
}
.post__author .username { font-weight: 700; color: var(--primary); font-size: 1.01rem; word-break: break-word; }
.post__author .role { font-size: .73rem; text-transform: uppercase; letter-spacing: .04em; color: var(--accent); font-weight: 700; }
.post__author .joined { font-size: .75rem; color: #94a3b8; }
.post__author .posts-count { font-size: .82rem; color: var(--text-secondary); }
.post__author .posts-count strong { color: var(--primary); }

.post__body { padding: 1.1rem 1.5rem; display: flex; flex-direction: column; }
.post__head {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: .5rem; margin-bottom: .75rem; border-bottom: 1.5px solid #e6eaf1;
    font-size: .82rem; color: var(--text-muted);
}
.post__head a.permalink { color: #94a3b8; text-decoration: none; font-weight: 600; }
.post__head a.permalink:hover { color: var(--primary); }
.post__content {
    font-size: 1.01rem; line-height: 1.7; color: var(--text-main);
    white-space: pre-wrap; word-break: break-word; flex: 1;
}
.post__foot { margin-top: 1rem; padding-top: .7rem; border-top: 1.5px solid #e6eaf1; font-size: .8rem; color: #94a3b8; }

@media (max-width: 720px) {
    .post { grid-template-columns: 1fr; }
    .post__author { flex-direction: row; border-right: 0; border-bottom: 1px solid #e2e8f0; padding: .65rem .9rem; text-align: left; }
    .post__avatar { width: 40px; height: 40px; font-size: 1rem; }
    .post__author .username { font-size: .9rem; }
    .post__author .joined, .post__author .posts-count, .post__author .role { font-size: .72rem; }
}

/* ── Reply / new thread form ───────────────────────────────────────────── */

/* Forum forms */
.forum-form {
    background: var(--surface);
    border: 1.5px solid #e6eaf1;
    border-radius: var(--radius);
    padding: 1.4rem 1.5rem; margin-top: 1.2rem;
    box-shadow: 0 1px 6px rgba(35,64,142,0.04);
}
.forum-form h2 { margin: 0 0 .9rem; font-size: 1.13rem; color: var(--primary); }
.forum-form .field { margin-bottom: .95rem; }
.forum-form label { display: block; font-size: .87rem; font-weight: 600; color: var(--text-secondary); margin-bottom: .3rem; }
.forum-form input[type="text"], .forum-form select, .forum-form textarea {
    width: 100%; padding: .8rem .95rem; border: 1.5px solid #e6eaf1;
    border-radius: var(--radius); font-size: 1.01rem; font-family: inherit;
    outline: none; transition: border-color .18s, box-shadow .18s; background: var(--background);
    color: var(--text-main);
}
.forum-form textarea { resize: vertical; min-height: 120px; line-height: 1.65; }
.forum-form input:focus, .forum-form select:focus, .forum-form textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--accent-light);
}
.forum-form .hint { font-size: .8rem; color: #94a3b8; margin-top: .3rem; }
.forum-form .actions { display: flex; justify-content: flex-end; gap: .5rem; margin-top: .25rem; }

.forum-closed {
    background: #fde2e2; border: 1px solid #fca5a5; color: #b42318;
    padding: 1rem 1.25rem; border-radius: var(--radius); margin-top: 1rem;
    font-size: .9rem; font-weight: 600;
}

/* ── Flash + errors ─────────────────────────────────────────────────────── */
/* Alerts */
.forum-alert {
    border-radius: var(--radius); padding: 1rem 1.2rem; margin-bottom: 1.2rem; font-size: 1.01rem;
    border: 1.5px solid;
    font-weight: 500;
}
.forum-alert--ok  { background: #ecfdf5; border-color: var(--success); color: #065f46; }
.forum-alert--err { background: #fef2f2; border-color: var(--error); color: #b42318; }

/* ── Pagination ─────────────────────────────────────────────────────────── */
/* Pagination */
.forum-pager { display: flex; justify-content: center; gap: .3rem; flex-wrap: wrap; margin: 1.25rem 0 0; }
.forum-pager a, .forum-pager span {
    display: inline-block; padding: .48rem .9rem; border-radius: var(--radius);
    border: 1.5px solid #e6eaf1; background: var(--surface); color: var(--text-main);
    text-decoration: none; font-size: .93rem; font-weight: 600;
    transition: color 0.18s, background 0.18s, border 0.18s;
}
.forum-pager a:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #eaf6f5;
}
.forum-pager .current {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.forum-pager .disabled { opacity: .45; cursor: not-allowed; }

/* ── Empty state ────────────────────────────────────────────────────────── */
/* Empty state */
.forum-empty {
    text-align: center; padding: 2.5rem 1rem; color: #94a3b8; font-size: 1.01rem;
    background: var(--surface); border: 1.5px dashed #e6eaf1; border-radius: var(--radius);
}
.forum-empty .ico { font-size: 2.2rem; display: block; margin-bottom: .5rem; opacity: .6; }