/* ============================================================
   六道裂隙 · 联机大厅样式（/bros/rooms/）
   底子是宣传页那套（css/landing.css 的变量与按钮），这里只补房间列表。
   页面结构见 bros/rooms/index.html，轮询见 bros/js/rooms.js。
   ============================================================ */

/* ==================== 页头（比宣传页首屏矮一截） ==================== */
.lobby-head {
    max-width: 1080px;
    margin: 0 auto;
    padding: clamp(2.2rem, 6vw, 3.6rem) var(--pad) 0;
    text-align: center;
}

.lobby-head__tag {
    display: inline-block;
    padding: 0.25rem 0.85rem;
    color: #d8e3ff;
    font-size: 0.8rem;
    letter-spacing: 3px;
    background: rgba(71, 200, 255, 0.12);
    border: 1px solid rgba(71, 200, 255, 0.35);
    border-radius: 999px;
}

.lobby-head h1 {
    margin-top: 1rem;
    font-size: clamp(2rem, 7vw, 3.1rem);
    font-weight: 900;
    letter-spacing: 6px;
    background: linear-gradient(120deg, #fff, #b8a6ff 55%, #7fe3ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.lobby-head__sub {
    margin-top: 0.7rem;
    color: var(--sub);
    font-size: clamp(0.95rem, 2.6vw, 1.1rem);
}

.lobby-head__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.5rem;
}

/* ==================== 房间列表 ==================== */
.rooms {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    max-width: 1080px;
    margin: 0 auto;
}

.room {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 0.9rem 1.05rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.room:hover {
    border-color: rgba(141, 92, 255, 0.5);
    transform: translateY(-1px);
}

.room__main {
    min-width: 0;
}

.room__name {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    flex-wrap: wrap;
    font-weight: 800;
    letter-spacing: 1px;
}

.room__tag {
    padding: 0.1rem 0.55rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: #c9ccff;
    border: 1px solid var(--line);
    border-radius: 999px;
}

.room__tag--open {
    color: #8ef7c1;
    background: rgba(60, 220, 150, 0.12);
    border-color: rgba(110, 240, 180, 0.45);
}

.room__tag--busy {
    color: #ffd08a;
    background: rgba(255, 190, 90, 0.12);
    border-color: rgba(255, 200, 120, 0.4);
}

.room__meta {
    margin-top: 0.2rem;
    color: var(--sub);
    font-size: 0.85rem;
}

.room__code {
    color: var(--gold);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-weight: 800;
    letter-spacing: 0.14em;
}

.room__action {
    flex-shrink: 0;
}

.room__action .btn {
    min-width: 6.5rem;
}

.rooms-empty {
    max-width: 1080px;
    margin: 0 auto;
    padding: 1.4rem 1.1rem;
    color: var(--sub);
    text-align: center;
    background: rgba(21, 25, 59, 0.5);
    border: 1px dashed var(--line);
    border-radius: var(--radius);
}

.rooms-note {
    max-width: 1080px;
    margin: 1rem auto 0;
    color: var(--sub);
    font-size: 0.85rem;
    text-align: center;
}

/* ==================== 窄屏 ==================== */
@media (max-width: 560px) {
    .room {
        align-items: stretch;
    }

    .room__action,
    .room__action .btn {
        width: 100%;
    }

    .lobby-head h1 {
        letter-spacing: 3px;
    }
}