.room-grid-layout {
            display: grid;
            grid-template-columns: minmax(320px, 0.92fr) minmax(360px, 1.08fr);
            gap: clamp(10px, 1.6vw, 20px);
            align-items: start;
            width: 100%;
            min-width: 0;
        }
        .room-grid-layout > .members-area {
            margin-bottom: 0;
        }
        .room-info-panel,
        .room-members-panel,
        #room-chat-panel {
            min-height: 100%;
        }
        .room-info-panel {
            background: linear-gradient(180deg, rgba(255,255,255,.96), rgba(248,250,252,.96));
            border: 1px solid rgba(148,163,184,.18);
            box-shadow: 0 18px 38px rgba(15,23,42,.05);
        }
        body.dark .room-info-panel {
            background: linear-gradient(180deg, rgba(26,32,44,.98), rgba(15,23,42,.98));
            border-color: rgba(71,85,105,.34);
            box-shadow: 0 16px 34px rgba(0,0,0,.22);
        }
        .room-header-compact {
            display: flex;
            flex-direction: column;
            gap: 14px;
            min-width: 0;
        }
        .room-title-main {
            min-width: 0;
        }
        .room-title-row {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 12px;
            min-width: 0;
        }
        .room-name-display {
            display: flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
            font-size: clamp(1.02rem, 1.05rem + 0.55vw, 1.48rem);
            line-height: 1.28;
            font-weight: 800;
            letter-spacing: 0.01em;
        }
        .room-name-display > span {
            min-width: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .room-name-display.editable {
            cursor: text;
        }
        .room-name-display.editable:hover {
            color: var(--accent);
        }
        .room-title-icon-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 0 0 auto;
        }
        .room-icon-btn {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-control);
            border: 1px solid rgba(148,163,184,.22);
            background: linear-gradient(180deg, rgba(255,255,255,.94), rgba(241,245,249,.92));
            color: var(--text-primary);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            box-shadow: 0 10px 22px rgba(15,23,42,.06);
            transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
        }
        .room-icon-btn:hover {
            transform: translateY(-1px);
            border-color: rgba(59,130,246,.32);
            box-shadow: 0 14px 24px rgba(37,99,235,.12);
        }
        .room-icon-btn.is-active {
            color: var(--accent);
            background: rgba(37,99,235,.10);
            border-color: rgba(59,130,246,.42);
            box-shadow: 0 14px 24px rgba(37,99,235,.14);
        }
        .room-icon-btn:disabled {
            opacity: 0.45;
            cursor: not-allowed;
            box-shadow: none;
        }
        .room-icon-btn.room-icon-btn-danger:hover {
            color: #ef4444;
            border-color: rgba(239,68,68,.38);
            box-shadow: 0 14px 24px rgba(239,68,68,.10);
        }
        body.dark .room-icon-btn {
            background: linear-gradient(180deg, rgba(30,41,59,.96), rgba(15,23,42,.96));
            border-color: rgba(71,85,105,.38);
            box-shadow: 0 12px 24px rgba(0,0,0,.18);
        }
        body.dark .room-icon-btn.is-active {
            background: rgba(59,130,246,.18);
            border-color: rgba(96,165,250,.42);
            box-shadow: 0 14px 24px rgba(37,99,235,.18);
        }
        .room-title-edit {
            display: flex;
            flex-direction: column;
            gap: 8px;
            min-width: 0;
        }
        .room-title-edit input {
            width: min(520px, 100%);
            height: 48px;
            padding: 0 16px;
            border-radius: var(--radius-control);
            border: 1px solid rgba(148,163,184,.26);
            background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(248,250,252,.96));
            color: var(--text-primary);
            box-shadow: inset 0 1px 0 rgba(255,255,255,.7), 0 8px 20px rgba(15,23,42,.04);
        }
        .room-title-edit input:focus {
            outline: none;
            border-color: rgba(59,130,246,.55);
            box-shadow: 0 0 0 4px rgba(59,130,246,.12), 0 12px 24px rgba(37,99,235,.08);
        }
        body.dark .room-title-edit input {
            background: linear-gradient(180deg, rgba(30,41,59,.96), rgba(15,23,42,.98));
            border-color: rgba(71,85,105,.42);
            box-shadow: inset 0 1px 0 rgba(255,255,255,.03), 0 10px 22px rgba(0,0,0,.18);
        }
        .room-title-edit-hint {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }
        .room-meta-line {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            min-width: 0;
            flex: 1 1 auto;
            overflow-x: auto;
            padding-bottom: 2px;
            color: var(--text-secondary);
            scrollbar-width: none;
        }
        .room-meta-line::-webkit-scrollbar {
            display: none;
        }
        .room-meta-item,
        .room-meta-sep,
        .room-meta-line .mini-badge {
            flex: 0 0 auto;
        }
        .room-meta-item {
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.01em;
        }
        .room-meta-sep {
            opacity: 0.48;
        }
        .room-meta-line .mini-badge {
            margin-top: 0;
            font-size: 0.74rem;
            padding: 3px 10px;
        }
        .room-info-heading {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .room-panel-kicker {
            display: inline-flex;
            align-items: center;
            padding: 5px 12px;
            border-radius: 999px;
            background: var(--accent-soft);
            border: 1px solid var(--accent-outline);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .room-info-title h2 {
            font-size: clamp(1rem, 1.1rem + 0.45vw, 1.4rem);
            line-height: 1.35;
        }
        .room-info-actions,
        .room-info-button-row {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .room-info-actions {
            justify-content: flex-end;
        }
        .room-info-actions .btn,
        .room-info-button-row .btn {
            min-width: 0;
            flex: 1 1 132px;
        }
        .room-rename-card {
            margin-top: 18px;
            padding: 16px;
            border-radius: 16px;
            border: 1px solid rgba(148,163,184,.18);
            background: rgba(255,255,255,.72);
        }
        body.dark .room-rename-card {
            background: rgba(15,23,42,.58);
            border-color: rgba(71,85,105,.34);
        }
        .room-rename-input-wrap label {
            display: block;
            margin-bottom: 8px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .room-rename-input-wrap input {
            width: 100%;
            height: 50px;
            padding: 0 16px;
            border-radius: 14px;
            border: 1px solid rgba(148,163,184,.26);
            background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(248,250,252,.96));
            color: var(--text-primary);
            box-shadow: inset 0 1px 0 rgba(255,255,255,.7), 0 8px 20px rgba(15,23,42,.04);
        }
        .room-rename-input-wrap input:focus {
            outline: none;
            border-color: rgba(59,130,246,.55);
            box-shadow: 0 0 0 4px rgba(59,130,246,.12), 0 12px 24px rgba(37,99,235,.08);
        }
        body.dark .room-rename-input-wrap input {
            background: linear-gradient(180deg, rgba(30,41,59,.96), rgba(15,23,42,.98));
            border-color: rgba(71,85,105,.42);
            box-shadow: inset 0 1px 0 rgba(255,255,255,.03), 0 10px 22px rgba(0,0,0,.18);
        }
        .room-info-button-row {
            margin-top: 14px;
        }
        .room-members-panel {
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .room-members-panel .members-header,
        .room-members-panel .speaking-summary,
        .room-members-panel .member-list {
            position: relative;
            z-index: 1;
        }
        .room-members-panel .member-list {
            display: flex;
            flex-direction: column;
            flex-wrap: nowrap;
            gap: 12px;
            max-height: 540px;
            overflow: auto;
            padding-right: 6px;
        }
        .members-voice-overlay {
            position: absolute;
            inset: 0;
            z-index: 6;
            display: block;
            padding: 0;
            border-radius: inherit;
            text-align: center;
            background: linear-gradient(180deg, rgba(255,255,255,.28), rgba(248,250,252,.44));
            backdrop-filter: blur(16px) saturate(1.08);
            -webkit-backdrop-filter: blur(16px) saturate(1.08);
            box-shadow: inset 0 1px 0 rgba(255,255,255,.28);
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: opacity .22s ease, visibility .22s ease;
        }
        .members-voice-overlay-content {
            position: absolute;
            inset: 0;
            display: grid;
            place-content: center;
            justify-items: center;
            gap: 8px;
            width: 100%;
            height: 100%;
            padding: 24px 20px;
            text-align: center;
        }
        .members-voice-overlay strong {
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 800;
            line-height: 1.2;
        }
        .members-voice-overlay span {
            color: var(--text-secondary);
            font-size: 0.82rem;
            line-height: 1.6;
        }
        .members-voice-overlay span:empty,
        .member-voice-overlay span:empty {
            display: none;
        }
        .room-members-panel.is-voice-connecting > :not(.members-voice-overlay) {
            filter: blur(8px);
            opacity: .2;
            transform: scale(.995);
            pointer-events: none;
            user-select: none;
            transition: filter .22s ease, opacity .22s ease, transform .22s ease;
        }
        .room-members-panel.is-voice-connecting .members-voice-overlay {
            opacity: 1;
            visibility: visible;
        }
        body.dark .members-voice-overlay {
            background: linear-gradient(180deg, rgba(15,23,42,.28), rgba(15,23,42,.46));
            box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
        }
        .room-members-panel .member-list li {
            width: 100%;
            padding: clamp(6px, 0.62vw, 8px) clamp(10px, 1vw, 14px);
            border-radius: clamp(12px, 1vw, 15px);
            display: flex;
            flex-direction: column;
            align-items: stretch;
            justify-content: flex-start;
            gap: 4px;
            position: relative;
            overflow: visible;
            background: linear-gradient(180deg, rgba(255,255,255,.94), rgba(248,250,252,.96));
            border: 1px solid rgba(148,163,184,.16);
            box-shadow: 0 10px 22px rgba(15,23,42,.05);
        }
        .room-members-panel .member-list li:not(.self) {
            padding-top: 4x;
            padding-bottom: 4px;
        }
        body.dark .room-members-panel .member-list li {
            background: linear-gradient(180deg, rgba(30,41,59,.92), rgba(15,23,42,.96));
            border-color: rgba(71,85,105,.34);
            box-shadow: 0 12px 24px rgba(0,0,0,.18);
        }
        .room-members-panel .member-list li::before {
            display: none;
            content: none;
        }
        .room-members-panel .member-list li::after {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            pointer-events: none;
            z-index: 0;
            background: linear-gradient(135deg, rgba(96,165,250,.18), rgba(37,99,235,.28));
            opacity: calc(var(--speak-level, 0) * 0.92);
            transition: opacity 0.16s ease;
            will-change: opacity;
        }
        body.dark .room-members-panel .member-list li::after {
            background: linear-gradient(135deg, rgba(59,130,246,.22), rgba(14,165,233,.26));
        }
        .room-members-panel .member-list li.speaking {
            --speaking-ring: rgba(59,130,246,.10);
            --speaking-ring-strong: rgba(59,130,246,.18);
            --speaking-shadow: rgba(37,99,235,.10);
            --speaking-shadow-strong: rgba(37,99,235,.14);
            --speaking-glow-soft: rgba(96,165,250,.12);
            --speaking-glow: rgba(59,130,246,.16);
            animation: none;
            will-change: auto;
        }
        body.dark .room-members-panel .member-list li.speaking {
            --speaking-ring: rgba(96,165,250,.12);
            --speaking-ring-strong: rgba(147,197,253,.20);
            --speaking-shadow: rgba(37,99,235,.14);
            --speaking-shadow-strong: rgba(59,130,246,.20);
            --speaking-glow-soft: rgba(96,165,250,.16);
            --speaking-glow: rgba(96,165,250,.22);
        }
        .room-members-panel .member-list li > :not(.member-admin-card-media) {
            position: relative;
            z-index: 1;
        }
        .room-members-panel .member-actions {
            margin-left: 0;
            width: 100%;
            justify-content: flex-end;
            align-items: center;
        }
        .room-members-panel .member-list li.has-action-menu .member-main {
            padding-right: 48px;
        }
        .member-card-head {
            display: flex;
            align-items: center;
            min-width: 0;
            width: 100%;
            min-height: 0;
        }
        .member-action-anchor {
            position: absolute;
            top: 10px;
            right: 10px;
            z-index: 4;
            display: flex;
            align-items: flex-start;
            justify-content: flex-end;
        }
        .member-action-menu-wrap {
            position: absolute;
            top: 10px;
            right: 10px;
            z-index: 4;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 8px;
        }
        .member-action-trigger {
            width: 32px;
            height: 32px;
            border-radius: 12px;
            border: 1px solid rgba(148,163,184,.24);
            background: linear-gradient(180deg, rgba(255,255,255,.96), rgba(241,245,249,.96));
            color: var(--text-secondary);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.12rem;
            line-height: 1;
            box-shadow: 0 8px 18px rgba(15,23,42,.08);
            transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease, color .16s ease, background-color .16s ease;
        }
        .member-action-trigger:hover {
            transform: translateY(-1px);
            border-color: var(--accent-outline);
            box-shadow: 0 14px 24px rgba(var(--accent-rgb), .14);
            box-shadow: 0 12px 22px rgba(37,99,235,.12);
        }
        .member-action-trigger.is-open,
        .member-action-menu-wrap.is-open .member-action-trigger {
            color: var(--accent);
            border-color: rgba(59,130,246,.38);
            box-shadow: 0 12px 24px rgba(37,99,235,.14);
        }
        body.dark .member-action-trigger {
            background: linear-gradient(180deg, rgba(30,41,59,.96), rgba(15,23,42,.98));
            border-color: rgba(71,85,105,.42);
            box-shadow: 0 12px 22px rgba(0,0,0,.18);
        }
        .member-action-menu {
            width: min(280px, calc(100vw - 84px));
            padding: 10px;
            border-radius: 16px;
            border: 1px solid rgba(148,163,184,.22);
            background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(248,250,252,.98));
            box-shadow: 0 20px 36px rgba(15,23,42,.14);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .member-action-popover {
            position: fixed;
            left: 0;
            top: 0;
            z-index: 1300;
            width: min(280px, calc(100vw - 84px));
            max-height: min(420px, calc(100vh - 24px));
            overflow-y: auto;
            padding: 10px;
            border-radius: 16px;
            border: 1px solid rgba(148,163,184,.22);
            background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(248,250,252,.98));
            box-shadow: 0 20px 36px rgba(15,23,42,.14);
            display: flex;
            flex-direction: column;
            gap: 8px;
            scrollbar-width: thin;
        }
        body.dark .member-action-menu {
            background: linear-gradient(180deg, rgba(27,35,53,.98), rgba(15,23,42,.98));
            border-color: rgba(71,85,105,.42);
            box-shadow: 0 18px 34px rgba(0,0,0,.3);
        }
        body.dark .member-action-popover {
            background: linear-gradient(180deg, rgba(27,35,53,.98), rgba(15,23,42,.98));
            border-color: rgba(71,85,105,.42);
            box-shadow: 0 18px 34px rgba(0,0,0,.3);
        }
        .member-menu-item {
            width: 100%;
            min-height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            font-weight: 700;
        }
        .member-menu-note {
            padding: 10px 12px;
            border-radius: 14px;
            border: 1px dashed rgba(148,163,184,.26);
            background: rgba(148,163,184,.08);
            color: var(--text-secondary);
            font-size: 0.78rem;
            line-height: 1.5;
            font-weight: 700;
        }
        .member-menu-self-audio {
            width: 100%;
            flex-direction: column;
            align-items: stretch;
        }
        .member-menu-self-audio .self-audio-btn {
            width: 100%;
            min-width: 0;
        }
        .member-menu-volume {
            display: flex;
            flex-direction: column;
            gap: 8px;
            width: 100%;
            padding: 10px 12px;
            border-radius: 14px;
            border: 1px solid rgba(148,163,184,.2);
            background: rgba(148,163,184,.08);
        }
        .member-menu-volume-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 0.78rem;
            font-weight: 700;
        }
        .member-menu-volume-head strong {
            color: var(--accent);
            font-size: 0.82rem;
        }
        .member-menu-volume input[type=range] {
            width: 100%;
            min-width: 0;
            margin: 0;
        }
        body.dark .member-menu-note,
        body.dark .member-menu-volume {
            background: rgba(71,85,105,.18);
            border-color: rgba(71,85,105,.36);
        }
        #room-chat-panel {
            min-height: 0;
            align-self: start;
            display: grid;
            grid-template-rows: auto minmax(0, 340px) auto auto;
            gap: 0;
            padding-bottom: 16px;
            transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
        }
        #room-chat-messages {
            min-height: 340px;
            height: 340px;
            max-height: 340px;
        }
        .room-settings-modal {
            position: fixed;
            inset: 0;
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background: rgba(15,23,42,.48);
            backdrop-filter: blur(10px);
        }
        body.dark .room-settings-modal {
            background: rgba(2,6,23,.72);
        }
        .room-settings-dialog {
            width: min(920px, 100%);
            max-height: calc(100vh - 40px);
            overflow: auto;
            background: var(--bg-card);
            color: var(--text-primary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: 24px;
        }
        .room-settings-header {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 18px;
        }
        .room-settings-header h3 {
            margin-bottom: 6px;
            font-size: 1.2rem;
        }
        .room-settings-header p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .modal-close-btn {
            width: 42px;
            height: 42px;
            border: 1px solid var(--border-light);
            border-radius: 50%;
            background: var(--btn-secondary-bg);
            color: var(--text-primary);
            cursor: pointer;
            font-size: 1.05rem;
            flex: 0 0 auto;
        }
        .modal-close-btn:hover {
            background: var(--border-light);
        }
        .room-settings-panel {
            margin-bottom: 0;
        }
        body.modal-open {
            overflow: hidden;
        }
        .room-header-row {
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto;
            grid-template-areas:
                "title leave"
                "actions actions";
            gap: 16px 18px;
            align-items: start;
            margin-bottom: 18px;
        }
        .room-title-block {
            grid-area: title;
            min-width: 0;
        }
        .room-title-actions {
            grid-area: actions;
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto auto;
            align-items: center;
            gap: 12px;
            width: 100%;
            padding: 14px 16px;
            border: 1px solid rgba(148,163,184,.22);
            border-radius: var(--radius-panel);
            background: linear-gradient(180deg, rgba(255,255,255,.84), rgba(255,255,255,.62));
            box-shadow: 0 8px 20px rgba(15,23,42,.035);
        }
        .room-title-actions .btn {
            min-width: 142px;
            border-radius: 14px;
        }
        .room-rename-input-wrap {
            min-width: 0;
        }
        .room-header-row > #leave-room-btn { grid-area: leave; }
        .room-rename-input-wrap input {
            width: 100%;
            height: 48px;
            border-radius: var(--radius-control);
            background: rgba(255,255,255,.92);
        }
        .room-rename-hint {
            margin-top: 7px;
            font-size: 0.84rem;
            color: var(--text-secondary);
        }
        #call-interface {
            display: flex;
            flex-direction: column;
            gap: clamp(12px, 1.8vw, 20px);
            overflow: visible;
            padding-bottom: 0;
        }
        #call-interface .status-bar {
            min-width: 0;
            width: 100%;
        }
        .room-workspace {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 370px;
            grid-template-areas:
                "controls chat"
                "members members";
            gap: 18px 22px;
            align-items: start;
        }
        .room-left-column,
        .room-right-column {
            min-width: 0;
            display: contents;
        }
        .room-left-column > .device-panel {
            grid-area: controls;
            margin-bottom: 0;
        }
        .members-area.members-bottom {
            grid-area: members;
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding-top: 16px;
            min-height: 0;
            margin-bottom: 0;
        }
        .room-right-column > #room-chat-panel {
            grid-area: chat;
        }
        .speaking-summary {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
            padding: 10px 12px;
            border-radius: var(--radius-control);
            background: rgba(37,99,235,.08);
            border: 1px solid rgba(37,99,235,.16);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 700;
            min-height: 44px;
        }
        .speaking-summary.active {
            color: var(--accent);
            box-shadow: 0 0 0 1px rgba(37,99,235,.08) inset;
        }
        body.dark .speaking-summary {
            background: rgba(59,130,246,.12);
            border-color: rgba(59,130,246,.26);
        }
        .member-list {
            max-height: 168px;
            overflow-y: auto;
            padding-right: 6px;
            align-content: flex-start;
        }
        #room-chat-panel {
            min-height: 0;
            align-self: start;
            display: grid;
            grid-template-rows: auto minmax(0, 286px) auto auto;
            gap: 0;
            padding-bottom: 16px;
            margin-bottom: 0;
        }
        #room-chat-messages {
            min-height: 286px;
            height: 286px;
            max-height: 286px;
        }
        .status-bar {
            margin-top: 0;
        }
        @media (max-width: 980px) {
            body {
                align-items: flex-start;
            }
            .header-main-row {
                align-items: stretch;
            }
            .header-tools {
                width: 100%;
                justify-content: space-between;
                margin-left: 0;
            }
            .lobby-toolbar {
                grid-template-columns: 1fr;
            }
            .toolbar-actions {
                justify-content: stretch;
            }
            .toolbar-actions {
                flex-wrap: wrap;
                justify-content: stretch;
            }
            .toolbar-actions .btn {
                flex: 1 1 150px;
            }
            .room-header-row {
                grid-template-columns: 1fr;
                grid-template-areas:
                    "title"
                    "leave"
                    "actions";
            }
            .room-title-actions {
                align-items: stretch;
                grid-template-columns: 1fr;
            }
            .room-title-actions .btn {
                width: 100%;
                min-width: 0;
            }
            .room-rename-input-wrap {
                min-width: 100%;
            }
            .room-workspace {
                grid-template-columns: 1fr;
                grid-template-areas:
                    "controls"
                    "chat"
                    "members";
            }
            .member-list {
                max-height: none;
            }
            #room-chat-panel {
                grid-template-rows: auto minmax(0, 260px) auto auto;
            }
            #room-chat-messages {
                min-height: 260px;
                height: 260px;
                max-height: 260px;
            }
            .room-grid-layout {
                gap: 12px;
            }
            .members-area {
                padding: 16px;
                border-radius: 20px;
            }
            .room-info-actions .btn,
            .room-info-button-row .btn,
            #room-chat-send-btn,
            .mini-btn {
                padding: 10px 12px;
                font-size: 0.82rem;
            }
            .speaking-summary {
                min-height: 40px;
                padding: 8px 10px;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 1180px) {
            .room-grid-layout {
                grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
                min-width: 0;
                align-items: stretch;
            }
            .room-info-panel {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 820px) {
            body {
                padding: 12px;
                align-items: flex-start;
            }
            .header-title-cluster {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .header-room-inline {
                width: 100%;
            }
            .room-meta-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .header-sub-row .header-room-inline,
            .header-sub-row .room-meta-line {
                width: 100%;
                max-width: 100%;
            }
            .header-tools {
                width: 100%;
                justify-content: space-between;
            }
            .room-title-row {
                flex-direction: column;
                align-items: stretch;
            }
            .room-title-icon-actions {
                width: 100%;
                justify-content: flex-start;
            }
            .room-title-edit input {
                width: 100%;
            }
            .room-meta-item {
                font-size: 0.76rem;
            }
            .room-grid-layout {
                grid-template-columns: 1fr;
                min-width: 0;
            }
            .room-info-panel,
            .room-members-panel,
            #room-chat-panel {
                grid-column: auto;
            }
            .room-info-actions,
            .room-info-button-row {
                width: 100%;
            }
            .room-info-actions .btn,
            .room-info-button-row .btn,
            .single-login-input .btn {
                flex: 1 1 160px;
            }
            .room-members-panel .member-list li {
                flex-direction: column;
            }
            .room-members-panel .member-list {
                max-height: none;
            }
            .room-members-panel .member-actions {
                width: 100%;
                margin-left: 0;
                justify-content: flex-start;
            }
            .member-secondary-line {
                flex-wrap: nowrap;
                align-items: center;
            }
            .member-role-wrap {
                flex: 1 1 auto;
                min-width: 0;
            }
            .member-volume-control {
                min-width: 104px;
                width: auto;
                margin-left: auto;
                flex: 0 0 auto;
            }
            .member-volume-control input[type=range] {
                width: min(140px, 34vw);
            }
            #room-chat-panel {
                grid-template-rows: auto minmax(0, 280px) auto auto;
            }
            #room-chat-messages {
                min-height: 280px;
                height: 280px;
                max-height: 280px;
            }
            .room-settings-dialog {
                padding: 18px;
                border-radius: 22px;
            }
        }
        @media (max-width: 640px) {
            body {
                padding: 10px;
            }
            .header-main-row {
                gap: 10px;
            }
            .header-room-inline {
                gap: 8px;
                align-items: flex-start;
            }
            .header-room-divider {
                display: none;
            }
            .room-meta-row {
                gap: 6px;
            }
            .header-tools {
                gap: 8px;
                flex-direction: column-reverse;
                align-items: stretch;
            }
            .header-tools .theme-toggle,
            .header-tools .room-title-icon-actions,
            .header-tools .header-account-chip {
                width: 100%;
                justify-content: space-between;
            }
            .room-name-display {
                font-size: 0.98rem;
            }
            .room-title-icon-actions {
                gap: 6px;
            }
            .room-icon-btn {
                width: 36px;
                height: 36px;
                border-radius: 12px;
                font-size: 0.92rem;
            }
            .card {
                padding: 16px;
                border-radius: 22px;
            }
            .header {
                gap: 10px;
                align-items: flex-start;
                flex-direction: column;
            }
            .header h1 {
                font-size: 1.2rem;
                flex-wrap: wrap;
            }
            .login-section,
            .create-form,
            .join-form,
            .members-area,
            .device-panel {
                padding: 14px;
                border-radius: 18px;
            }
            .room-panel-kicker {
                font-size: 0.68rem;
                padding: 4px 8px;
                margin-bottom: 6px;
            }
            .room-info-title h2,
            .members-header h3 {
                font-size: 0.95rem;
            }
            .mini-badge,
            .member-role,
            .member-speaking-badge,
            .badge {
                font-size: 0.68rem;
            }
            .room-meta-line .mini-badge {
                font-size: 0.66rem;
                padding: 3px 8px;
            }
            .room-rename-card {
                padding: 12px;
                margin-top: 12px;
            }
            .room-rename-input-wrap input,
            #room-chat-input {
                height: 44px;
                padding: 0 12px;
                border-radius: 14px;
                font-size: 0.84rem;
            }
            .member-list li {
                padding: 10px 12px;
                border-radius: 14px;
                font-size: 0.78rem;
            }
            .member-avatar {
                width: 34px;
                height: 34px;
                border-radius: 12px;
                font-size: 0.82rem;
            }
            .member-primary-line {
                gap: 6px;
            }
            .member-secondary-line {
                gap: 8px;
            }
            .member-state-badge {
                font-size: 0.62rem;
            }
            .member-level-bar {
                height: 6px;
            }
            .member-volume-control {
                font-size: 0.68rem;
                min-width: 96px;
            }
            .member-volume-control input[type=range] {
                width: min(126px, 38vw);
            }
            .member-actions {
                width: 100%;
                justify-content: flex-start;
            }
            .member-action-anchor {
                top: 8px;
                right: 8px;
            }
            .member-self-audio-group {
                width: 100%;
            }
            .self-audio-btn {
                flex: 1 1 0;
                min-width: 0;
            }
            .member-actions [data-volume] {
                width: 100% !important;
            }
            .room-chat-input-row {
                flex-direction: column;
                align-items: stretch;
            }
            #room-chat-send-btn {
                width: 100%;
                min-width: 0;
                height: 44px;
            }
            #room-chat-panel {
                grid-template-rows: auto minmax(0, 220px) auto auto;
            }
            #room-chat-messages {
                min-height: 220px;
                height: 220px;
                max-height: 220px;
                padding: 10px;
                border-radius: 16px;
            }
            .room-chat-bubble {
                padding: 8px 10px;
                border-radius: 14px;
                font-size: 0.76rem;
            }
            .room-chat-bubble.has-image {
                max-width: 100%;
            }
            .room-chat-meta,
            .room-rename-hint,
            #room-chat-status,
            .speaking-summary {
                font-size: 0.72rem;
            }
            .speaking-summary {
                min-height: 38px;
            }
            .room-chat-attachment-preview {
                flex-direction: column;
                align-items: stretch;
                padding: 10px 12px;
            }
            .room-chat-attachment-card {
                align-items: flex-start;
            }
            #room-chat-image-preview {
                width: 52px;
                height: 52px;
                border-radius: 12px;
            }
            .control-grid {
                grid-template-columns: 1fr;
            }
        }