/* WG21 Thread Detail + permalink page (page-owned).
 * Loaded from thread.html and message.html. Message card rules live in
 * threads.css; shared primitives (.wg21-card, .wg21-section-label, .wg21-btn)
 * in components.css.
 *
 * No overview tab bar — the double-gold band below (.wg21-thread-detail__rule)
 * carries the same chrome as All Threads. */

.wg21-page-thread-detail .wg21-content {
    padding-block-start: 0;
    background-color: var(--wg21-surface);
    background-image: var(--wg21-marble);
    background-size: cover;
    background-position: center;
}

.wg21-page-thread-detail .wg21-navbar {
    border-bottom: none;
}

.wg21-page-thread-detail footer {
    margin-top: 0;
}

/* Double gold rule — geometry matches .wg21-thread-list__rule. */
.wg21-thread-detail__rule {
    --wg21-tabs-rule: var(--wg21-frame-gap);
    --wg21-tabs-rule-band: 9px;
    --wg21-tabs-rule-offset: 15px;
    --wg21-tabs-rule-thin: 3px;
    position: relative;
    background: var(--wg21-surface);
    border-bottom: var(--wg21-tabs-rule) solid var(--wg21-gold);
    margin-inline: calc(-1 * var(--wg21-space-6));
    padding-inline: var(--wg21-space-6);
    margin-block-end: var(--wg21-space-8);
    min-block-size: var(--wg21-space-2);
}
.wg21-thread-detail__rule::after {
    content: "";
    position: absolute;
    inset-inline: 0;
    bottom: calc(-1 * var(--wg21-tabs-rule-offset));
    height: var(--wg21-tabs-rule-band);
    background-color: var(--wg21-surface);
    border-block-end: var(--wg21-tabs-rule-thin) solid var(--wg21-gold-border);
    pointer-events: none;
}

/* Two-column body (~70/30), matching All Threads / overview. */
.wg21-thread-detail__layout {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(16rem, 3fr);
    gap: var(--wg21-space-12);
    align-items: start;
    padding-inline: var(--wg21-space-2);
}
.wg21-thread-detail__main,
.wg21-thread-detail__aside {
    min-inline-size: 0;
}

.wg21-thread-detail__aside {
    display: flex;
    flex-direction: column;
    gap: var(--wg21-space-4);
    align-self: start;
}
.wg21-thread-detail__sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--wg21-space-4);
}
.wg21-thread-detail__aside .wg21-card {
    border: 1px solid var(--wg21-border);
}

/* HyperKitty JS binds votes/quotes to div.container-xxl; neutralize Bootstrap. */
.wg21-thread-detail.container-xxl {
    max-width: none;
    width: 100%;
    padding-inline: 0;
}

/* Header: retained HyperKitty newer/older row + WG21 title/meta. */
.wg21-thread-detail__header {
    margin-block-end: var(--wg21-space-8);
    padding-inline: var(--wg21-space-2);
}
.wg21-thread-detail__nav {
    align-items: flex-start;
    gap: var(--wg21-space-4);
}
.wg21-thread-detail__nav-side {
    flex: 0 0 auto;
    max-width: 8rem;
}
.wg21-thread-detail__nav-side:empty {
    flex-basis: 8rem;
    min-inline-size: 5rem;
}
.wg21-thread-detail__title-wrap {
    text-align: center;
    min-inline-size: 0;
}
.wg21-thread-detail__title,
.wg21-thread-detail h1.wg21-thread-detail__title {
    font-family: var(--wg21-font-serif);
    font-size: 2.5rem !important;
    font-weight: 400;
    line-height: var(--wg21-lh-tight);
    color: var(--wg21-gold);
    margin: 0;
    text-wrap: balance;
}
.wg21-thread-detail__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--wg21-space-3);
    margin-block-start: var(--wg21-space-4);
}
.wg21-thread-detail__counts {
    margin: 0;
    color: var(--wg21-muted);
    font-size: var(--wg21-fs-sm);
}
.wg21-thread-detail__sort {
    margin: 0;
    font-size: var(--wg21-fs-sm);
}
.wg21-thread-detail__sort a {
    color: var(--wg21-link);
    text-decoration: none;
}
.wg21-thread-detail__sort a:hover {
    color: var(--wg21-link-hover);
    text-decoration: underline;
}

/* Message stack */
.wg21-thread-detail__messages {
    display: flex;
    flex-direction: column;
    gap: var(--wg21-space-4);
}
.wg21-thread-detail__replies {
    display: flex;
    flex-direction: column;
    gap: var(--wg21-space-4);
}
/* Reply indent — match HyperKitty: only nested replies (.reply-level-N) indent.
 * Top-level .odd/.even wrappers stay flush with the original message. */
.wg21-thread-detail .replies {
    --wg21-reply-indent-step: var(--wg21-space-6);
    margin-top: 0;
}
.wg21-thread-detail .replies > .reply-level-1 {
    margin-inline-start: calc(var(--wg21-reply-indent-step) * 1);
}
.wg21-thread-detail .replies > .reply-level-2 {
    margin-inline-start: calc(var(--wg21-reply-indent-step) * 2);
}
.wg21-thread-detail .replies > .reply-level-3 {
    margin-inline-start: calc(var(--wg21-reply-indent-step) * 3);
}
.wg21-thread-detail .replies > .reply-level-4 {
    margin-inline-start: calc(var(--wg21-reply-indent-step) * 4);
}
.wg21-thread-detail .replies > .reply-level-5 {
    margin-inline-start: calc(var(--wg21-reply-indent-step) * 5);
}
.view-thread.wg21-thread-detail .replies .wg21-thread-card.email,
.wg21-thread-detail .replies .email {
    margin: 0;
}
.wg21-thread-detail.view-thread .unread {
    border-left: none;
}

/* Sidebar info panel — Age / Last active rows + stacked metrics */
.wg21-thread-detail__info {
    display: flex;
    flex-direction: column;
    gap: var(--wg21-space-4);
}
.wg21-thread-detail__facts {
    display: flex;
    flex-direction: column;
    gap: var(--wg21-space-2);
}
.wg21-thread-detail__fact-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--wg21-space-4);
}
.wg21-thread-detail__fact-label {
    font-size: var(--wg21-fs-sm);
    color: var(--wg21-muted);
}
.wg21-thread-detail__fact-value {
    font-family: var(--wg21-font-serif);
    font-size: var(--wg21-fs-lead);
    font-weight: 400;
    color: var(--wg21-ink);
    text-align: end;
    white-space: nowrap;
}
.wg21-thread-detail__info ul.list-stats.wg21-icon-metrics.wg21-thread-detail__metrics {
    flex-direction: column;
    align-items: flex-start;
    flex-wrap: nowrap;
    gap: var(--wg21-space-2);
    margin: 0;
    padding: 0;
}
.wg21-thread-detail__info ul.list-stats.wg21-icon-metrics.wg21-thread-detail__metrics li {
    display: inline-flex;
    align-items: center;
    gap: var(--wg21-space-2);
    width: 100%;
}

.wg21-thread-detail__actions {
    display: flex;
    flex-direction: column;
    gap: var(--wg21-space-3);
}
.wg21-thread-detail__actions .wg21-btn {
    width: 100%;
    min-height: var(--wg21-touch);
}
.wg21-thread-detail__actions .wg21-btn--primary {
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.wg21-thread-detail h2.wg21-section-label,
.wg21-thread-detail h3.wg21-section-label,
.wg21-thread-detail #participants_title {
    font-family: var(--wg21-font-body);
    font-size: var(--wg21-fs-sm);
    font-weight: 600;
    letter-spacing: var(--wg21-tracking-eyebrow);
    color: var(--wg21-muted);
    line-height: var(--wg21-lh-base);
    margin: 0 0 var(--wg21-space-4);
    text-transform: uppercase;
}

.wg21-thread-detail__info .wg21-icon-metrics .fa {
    color: var(--wg21-gold);
    width: 1.25em;
    text-align: center;
}
#thread-overview-info .wg21-icon-metrics .fa {
    color: var(--wg21-gold);
  }

/* Sidebar widget cards — beat HyperKitty #tags / #participants spacing */
.wg21-thread-detail__tags-card #tags,
.wg21-thread-detail #tags {
    margin-top: 0;
    margin-bottom: 0;
    color: inherit;
}
.wg21-thread-detail #fav_form.favorite {
    margin: 0;
    color: inherit;
}
.wg21-thread-detail__tags-card #tags ul {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--wg21-space-2);
    padding: 0;
    margin: 0;
    list-style: none;
}
.wg21-thread-detail #tags ul li {
    display: inline-flex;
    align-items: center;
    gap: var(--wg21-space-1);
    margin: 0;
    padding: 0;
}
.wg21-thread-detail #tags ul li > span {
    display: none;
}
.wg21-thread-detail #tags ul li > a {
    color: var(--wg21-link);
    font-size: var(--wg21-fs-sm);
    text-decoration: none;
}
.wg21-thread-detail #tags ul li > a:hover {
    color: var(--wg21-link-hover);
    text-decoration: underline;
}
.wg21-thread-detail #add-tag form {
    margin: 0;
}
.wg21-thread-detail__tags-card #add-tag {
    margin-block-start: var(--wg21-space-4);
}
.wg21-thread-detail .wg21-thread-detail__aside-card,
.wg21-thread-detail__tags-card,
.wg21-thread-detail #participants {
    padding: var(--wg21-space-4) var(--wg21-space-6);
}

/* Participants list in sidebar */
.wg21-thread-detail #participants {
    margin-top: 0;
    color: inherit;
}
.wg21-thread-detail #participants li {
    margin: 0;
}
/* Rows are .wg21-poster (threads.css); their own padding sets the rhythm. */
.wg21-thread-detail__participants {
    display: flex;
    flex-direction: column;
}
.wg21-thread-detail__participant {
    min-inline-size: 0;
}

/* Leftover sidebar cards */
.wg21-thread-detail__aside-card-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--wg21-space-2);
    font-size: var(--wg21-fs-sm);
}
/* Do not set display on these <a>s: HyperKitty's setup_favorites() writes
 * inline display:block/none on .notsaved/.saved. Icon metrics below work
 * the same in block and flex formatting contexts. */
.wg21-thread-detail__aside-card-links a {
    color: var(--wg21-link);
    text-decoration: none;
}
.wg21-thread-detail__aside-card-links a:hover {
    color: var(--wg21-link-hover);
}
/* Beat HyperKitty `#thread-overview-info .fa` / `#message-overview-info .fa`
 * (gray rest, white on hover) and `.favorite a i { margin-right: 0.3em }`. */
:is(#thread-overview-info, #message-overview-info) .wg21-thread-detail__aside-card-links a .fa {
    display: inline-block;
    width: 1.25em;
    margin: 0;
    margin-inline-end: var(--wg21-space-2);
    text-align: center;
    vertical-align: middle;
    color: inherit;
}

.wg21-thread-detail__aside-card-links form.favorite {
    display: contents;
    margin: 0;
}

/* Unread navbar — neutralize HyperKitty fixed bar so it sits in the rail */
.wg21-thread-detail__aside #unreadnavbar,
.wg21-thread-detail #unreadnavbar {
    position: static;
    display: block;
    inset: auto;
    bottom: auto;
    right: auto;
    width: auto;
    margin: 0;
    padding: var(--wg21-space-4) var(--wg21-space-6);
    background: var(--wg21-surface-white);
    border: 1px solid var(--wg21-border);
    box-shadow: none;
    text-align: start;
    font-size: var(--wg21-fs-sm);
    color: var(--wg21-ink);
}
.wg21-thread-detail #unreadnavbar > div {
    width: auto;
    padding: 0;
    border: none;
    background: transparent;
}
.wg21-thread-detail__aside #unreadnavbar a {
    color: var(--wg21-link);
}

/* Beat upstream view-thread / thread layout floats */
.view-thread.wg21-thread-detail .row {
    margin: 0;
}
.view-thread.wg21-thread-detail .thread-header {
    float: none;
    width: auto;
}

@media (max-width: 991.98px) {
    .wg21-thread-detail__layout {
        grid-template-columns: 1fr;
        gap: var(--wg21-space-8);
        padding-inline: 0;
    }
    .wg21-thread-detail__header {
        padding-inline: 0;
    }
}

@media (max-width: 575.98px) {
    /* Match HyperKitty: drop nesting indent on narrow viewports. */
    .wg21-thread-detail .replies > .reply-level-1,
    .wg21-thread-detail .replies > .reply-level-2,
    .wg21-thread-detail .replies > .reply-level-3,
    .wg21-thread-detail .replies > .reply-level-4,
    .wg21-thread-detail .replies > .reply-level-5 {
        margin-inline-start: 0;
    }
}

@media (max-width: 767.98px) {
    .wg21-thread-detail__rule {
        margin-inline: calc(-1 * var(--wg21-space-6));
        padding-inline: var(--wg21-space-4);
    }
    .wg21-thread-detail__title,
    .wg21-thread-detail h1.wg21-thread-detail__title {
        font-size: 1.75rem !important;
    }
}

@media (forced-colors: active) {
    .wg21-thread-detail__rule { border-bottom: var(--wg21-frame-gold-width) solid CanvasText; }
    .wg21-thread-detail__rule::after { border-block-end-color: CanvasText; }
}