/* ============================================================
   lobby.html 新增样式（公开房间列表 / 昵称搜索 / 顶角按钮 / modal）
   复用 lobby.css 已有的色彩 token（墨 / 朱砂 / 宣纸 / 古铜）。
   ============================================================ */

/* ---------- 顶角按钮(.topbar 内 prepend) ---------- */
.topbar-link.primary {
    background: #2b5797;
    color: #fff;
    border: none;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(43, 87, 151, 0.22);
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.topbar-link.primary:hover {
    transform: translateY(-1px);
    background: #1e3f6f;
    box-shadow: 0 6px 16px rgba(43, 87, 151, 0.32);
}
.topbar-link.primary:focus-visible {
    outline: 2px solid #2b5797;
    outline-offset: 2px;
}

/* ---------- 公开房间列表: 标题 + 搜索框 ---------- */
.public-list-shell {
    max-width: 980px;
    margin: 48px auto 0;
    animation: section-in 0.5s ease both;
}
.public-list-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 16px;
    border-bottom: 1px solid var(--hairline);
    padding-bottom: 14px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.public-list-head .heading-block .eyebrow {
    font-family: var(--sans);
    font-size: 0.7rem;
    letter-spacing: 5px;
    text-transform: uppercase;
    color: var(--ink-soft);
    margin-bottom: 6px;
}
.public-list-head h2 {
    font-family: var(--serif);
    font-weight: 700;
    font-size: 1.55rem;
    color: var(--ink);
    letter-spacing: 4px;
    margin: 0;
}
.public-list-head .filters {
    display: flex;
    gap: 8px;
    align-items: center;
    padding-bottom: 4px;
}
.nickname-filter {
    width: 240px;
    padding: 8px 14px;
    border: 1.5px solid var(--hairline);
    border-radius: 999px;
    background: var(--surface);
    font-family: var(--sans);
    color: var(--ink);
    font-size: 0.92rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.nickname-filter::placeholder { color: var(--ink-soft); opacity: 0.6; }
.nickname-filter:focus {
    outline: none;
    border-color: #2b5797;
    box-shadow: 0 0 0 3px rgba(43, 87, 151, 0.1);
}
.ghost-btn {
    background: transparent;
    border: 1.5px solid var(--hairline);
    color: var(--ink-soft);
    border-radius: 999px;
    padding: 6px 12px;
    font-family: var(--sans);
    font-size: 0.82rem;
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease;
}
.ghost-btn:hover {
    border-color: #2b5797;
    color: #2b5797;
}
.ghost-btn[hidden] { display: none; }

/* ---------- 简牍式房间卡片 ---------- */
.public-room-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.public-room-card {
    display: grid;
    grid-template-columns: 56px 1fr auto;
    gap: 0;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid var(--hairline);
    border-radius: 4px;
    overflow: hidden;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    animation: card-in 0.4s ease both;
}
.public-room-card:hover {
    transform: translateY(-2px);
    box-shadow:
        0 1px 0 var(--hairline),
        0 16px 32px rgba(26, 29, 36, 0.08);
}
.public-room-card.is-full { opacity: 0.55; }

/* 卡片左封签: 深色竖列, 仿书脊 */
.public-room-card .seal {
    background: linear-gradient(180deg, var(--ink) 0%, #2a2e36 100%);
    color: var(--paper);
    writing-mode: vertical-rl;
    text-orientation: upright;
    font-family: var(--serif);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.public-room-card .body {
    padding: 14px 18px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}
.public-room-card .room-id-row {
    display: flex;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
}
.public-room-card .room-id {
    font-family: 'Courier New', ui-monospace, monospace;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--ink);
    letter-spacing: 2px;
}
.public-room-card .meta-line {
    font-family: var(--sans);
    font-size: 0.85rem;
    color: var(--ink-soft);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.public-room-card .meta-line strong {
    color: var(--ink);
    font-weight: 600;
}
.public-room-card .meta-line .creator-name {
    font-family: var(--serif);
    color: var(--cinnabar);
    font-weight: 700;
}

.public-room-card .actions {
    display: flex;
    align-items: center;
    padding: 0 18px 0 0;
}
.public-room-card .enter-btn {
    background: #2b5797;
    color: #fff;
    border: none;
    padding: 10px 22px;
    border-radius: 4px;
    font-family: var(--serif);
    font-weight: 700;
    letter-spacing: 4px;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease;
}
.public-room-card .enter-btn:hover {
    transform: translateY(-1px);
    background: #1e3f6f;
}
.public-room-card .enter-btn:disabled {
    background: var(--ink-soft);
    cursor: not-allowed;
    transform: none;
}

/* ---------- 空态 ---------- */
.empty-state {
    padding: 28px 24px;
    text-align: center;
    color: var(--ink-soft);
    border: 1px dashed var(--hairline);
    border-radius: 4px;
    background: rgba(255, 253, 247, 0.6);
}
.empty-state p { margin: 0; font-family: var(--sans); font-size: 0.95rem; }
.empty-state p + p { margin-top: 8px; font-size: 0.85rem; opacity: 0.7; }
.empty-state .clear-link {
    color: var(--cinnabar);
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline dotted;
    text-underline-offset: 3px;
}
.empty-state .clear-link:hover { text-decoration: underline; }

@keyframes card-in {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes section-in {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---------- modal 通用 ---------- */
.modal-dialog {
    border: none;
    background: transparent;
    padding: 0;
    max-width: none;
    width: 100%;
    height: 100%;
    margin: 0;
    color: inherit;
}
.modal-dialog::backdrop {
    background: rgba(26, 29, 36, 0.55);
    backdrop-filter: blur(2px);
}
.modal-card {
    background: var(--surface);
    border-radius: 6px;
    border: 1px solid var(--hairline);
    box-shadow: 0 30px 80px rgba(26, 29, 36, 0.35);
    width: min(440px, calc(100vw - 32px));
    margin: 6vh auto 0;
    padding: 28px 32px 22px;
    font-family: var(--sans);
    position: relative;
}
.modal-card h3 {
    font-family: var(--serif);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--ink);
    letter-spacing: 3px;
    margin: 0 0 4px;
}
.modal-card .eyebrow {
    font-size: 0.7rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--ink-soft);
    margin-bottom: 4px;
}
.modal-card .modal-close {
    position: absolute;
    top: 10px;
    right: 14px;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--ink-soft);
    font-size: 1.3rem;
    cursor: pointer;
    border-radius: 50%;
    line-height: 1;
}
.modal-card .modal-close:hover {
    background: var(--paper-deep);
    color: var(--ink);
}

.modal-card .form-group { margin-bottom: 14px; }
.modal-card .form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--ink-soft);
    font-size: 0.86rem;
    font-weight: 500;
}
.modal-card .chip-options {
    display: flex;
    gap: 8px;
}
.modal-card .chip {
    flex: 1;
    cursor: pointer;
    position: relative;
}
.modal-card .chip input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.modal-card .chip span {
    display: block;
    text-align: center;
    padding: 10px 6px;
    border: 2px solid var(--hairline);
    border-radius: 8px;
    font-size: 0.92rem;
    color: var(--ink-soft);
    transition: all 0.15s ease;
    user-select: none;
    font-weight: 500;
}
.modal-card .chip:hover span {
    border-color: #2b5797;
    background: rgba(43, 87, 151, 0.06);
}
.modal-card .chip input:checked + span {
    border-color: #2b5797;
    background: #2b5797;
    color: #fff;
    font-weight: 600;
}
.modal-card .chip input:focus-visible + span {
    outline: 2px solid #2b5797;
    outline-offset: 2px;
}
.modal-card .chip-hint {
    font-size: 0.78rem;
    color: var(--ink-soft);
    margin-top: 6px;
    opacity: 0.7;
}

.modal-card .password-row {
    display: flex;
    gap: 6px;
    align-items: stretch;
}
.modal-card .password-row input {
    flex: 1;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
    padding: 10px 12px;
    border: 1.5px solid var(--hairline);
    border-radius: 6px;
    font-size: 0.95rem;
    background: var(--surface);
    color: var(--ink);
}
.modal-card .password-row input:focus {
    outline: none;
    border-color: #2b5797;
}

.modal-card .modal-btn {
    display: block;
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 6px;
    font-size: 0.96rem;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--sans);
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
    margin-top: 8px;
}
.modal-card .modal-btn.primary {
    background: #2b5797;
    color: #fff;
    box-shadow: 0 4px 14px rgba(43, 87, 151, 0.32);
}
.modal-card .modal-btn.primary:hover:not(:disabled) {
    transform: translateY(-1px);
    background: #1e3f6f;
}
.modal-card .modal-btn.primary:disabled { opacity: 0.5; cursor: not-allowed; }
.modal-card .modal-btn.secondary {
    background: var(--paper-deep);
    color: var(--ink);
    font-weight: 500;
}
.modal-card .modal-btn.secondary:hover { background: #d8cdb6; }

.modal-card .modal-btn.mini {
    padding: 8px 14px;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 6px;
    width: auto;
}

/* 状态条(modal 内反馈) */
.status-line {
    margin-top: 10px;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    display: none;
}
.status-line.info { background: rgba(43, 87, 151, 0.1); color: #2b5797; }
.status-line.success { background: rgba(77, 122, 90, 0.12); color: #2d7a5a; }
.status-line.error { background: rgba(196, 61, 42, 0.1); color: #c43d2a; }

/* 加入房间信息卡(在 join modal 中显示) */
.room-info-card-inline {
    margin-top: 12px;
    padding: 12px 14px;
    border-radius: 6px;
    background: #f8f9fa;
    border-left: 4px solid var(--cinnabar);
}
.room-info-card-inline h4 {
    font-size: 0.92rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--ink);
    font-weight: 600;
}
.room-info-card-inline h4 code {
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    color: var(--ink);
    letter-spacing: 2px;
}
.room-info-card-inline .meta {
    display: flex;
    gap: 12px;
    font-size: 0.82rem;
    color: var(--ink-soft);
    flex-wrap: wrap;
}
.room-info-card-inline .meta strong { color: var(--ink); }
.room-info-card-inline .password-block {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px dashed var(--hairline);
}
.type-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.type-badge.public { background: rgba(77, 122, 90, 0.12); color: #2d7a5a; }
.type-badge.private { background: rgba(196, 61, 42, 0.12); color: #c43d2a; }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
    .public-list-shell { margin-top: 32px; padding: 0 4px; }
    .public-list-head h2 { font-size: 1.25rem; letter-spacing: 3px; }
    .nickname-filter { width: 100%; max-width: 200px; }
    .public-room-card { grid-template-columns: 38px 1fr auto; }
    .public-room-card .seal { font-size: 0.85rem; letter-spacing: 5px; }
    .public-room-card .body { padding: 12px 14px; }
    .public-room-card .actions { padding: 0 12px 0 0; }
    .public-room-card .enter-btn { padding: 8px 14px; letter-spacing: 2px; font-size: 0.85rem; }
}

@media (prefers-reduced-motion: reduce) {
    .public-room-card,
    .public-list-shell,
    .topbar-link.primary,
    .public-room-card .enter-btn { animation: none; transition: none; }
    .public-room-card:hover { transform: none; }
    .public-room-card .enter-btn:hover { transform: none; }
}

/* 顶角在窄屏下不挤压按钮 */
@media (max-width: 560px) {
    .topbar-link.primary { padding: 6px 12px; font-size: 0.85rem; }
    .topbar-link.ghost { padding: 6px 10px; font-size: 0.82rem; }
}

/* ---- 返回首页链接(大厅左上角, 仅 lobby.html 用了这一链接) ---- */
body.lobby-page #backHomeLink {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    text-decoration: none;
}
body.lobby-page #backHomeLink .home-icon {
    font-size: 1.05em;
    line-height: 1;
}
@media (max-width: 720px) {
    body.lobby-page #backHomeLink .home-text { display: none; }
}