:root {
    --bg-color: #f9fafb;
    --surface-color: #ffffff;
    --text-main: #111827;
    --text-sub: #6b7280;
    --primary-color: #ffffff;
    --primary-hover: #1d4ed8;
    --danger-color: #ef4444;
    --danger-active: #dc2626;
    --success-color: #1067b9;
    --border-color: #e5e7eb;
    
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 8px;
}

.hidden {
    display: none !important;
}

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    height: 100dvh; 
    overflow: hidden; 
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
}

*, *::before, *::after {
    box-sizing: border-box;
}

h1 {
    color: var(--text-main);
    text-align: center;
    font-weight: 700;
    font-size: 1.5rem;
    margin: 40px 0 20px;
    letter-spacing: 0.05em;
}

.room-table {
    width: 90%;
    max-width: 800px;
    margin: 0 auto 40px auto;
    border-collapse: collapse;
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.room-table thead tr {
    background-color: #f8fafc;
    border-bottom: 1px solid var(--border-color);
}

.room-table th {
    padding: 12px 16px;
    font-size: 0.85rem;
    color: var(--text-sub);
    font-weight: 600;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.room-table th:nth-child(2) {
    text-align: left;
    padding-left: 24px !important;
}

.room-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.1s;
}

.room-table tbody tr:last-child {
    border-bottom: none;
}

.room-table tbody tr:hover {
    background-color: #f1f5f9;
}

.room-table tbody td {
    padding: 12px 16px;
    vertical-align: middle;
}

.room-table tbody td:nth-child(1) {
    color: var(--text-sub);
    font-size: 0.9rem;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

.room-name-cell {
    font-weight: 500;
    font-size: 1rem;
    color: var(--text-main);
}

.btn {
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.02em;
}

.create-btn {
    background-color: #fff;
    border-color: var(--border-color);
    color: var(--text-main);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}
.create-btn:hover {
    background-color: #f8fafc;
    border-color: #cbd5e1;
}

.join-btn {
    background-color: #1d4ed8;
    color: #fff;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}
.join-btn:hover {
    background-color: #1067b9;
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1);
}

.delete-btn {
    background-color: transparent;
    color: var(--text-sub);
    padding: 8px;
    margin-left: 8px;
}
.delete-btn:hover {
    color: var(--danger-color);
    background-color: #fef2f2;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.modal.hidden {
    display: none !important;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
}

.modal-content {
    position: relative;
    z-index: 2001;
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    max-height: 85vh;
    overflow-y: auto;
}

.modal-content h2 {
    font-size: 1.25rem;
    color: var(--text-main);
    margin-bottom: 24px;
    text-align: center;
    font-weight: 700;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    font-size: 1rem;
    color: var(--text-main);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.modal-actions {
    margin-top: 32px;
    text-align: right;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.modal-submit-btn {
    background-color: #1067b9;
    color: white;
    border: none;
}
.modal-submit-btn:hover {
    background-color: var(--primary-hover);
}

.modal-cancel-btn {
    background-color: #fff;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}
.modal-cancel-btn:hover {
    background-color: #f8fafc;
}

.quiz-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh; 
    background-color: var(--bg-color);
}

.quiz-header {
    flex-shrink: 0;
    height: 60px;
    padding: 0 20px;
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-grow: 1; 
}

.md-icon-button {
    font-family: 'Material Icons';
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-sub);
    border-radius: var(--radius-md);
    width: 40px;
    height: 40px;
    padding: 0;
    cursor: pointer;
    background: transparent;
    border: 1px solid transparent;
    margin-left: 8px;
    transition: all 0.2s;
}
.md-icon-button:hover {
    background-color: #fff;
    border-color: var(--border-color);
    color: var(--text-main);
    box-shadow: 0 1px 2px 0 rgba(0,0,0,0.05);
}

.user-list-area {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto; 
    overflow-x: hidden; 
    min-height: 0;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap; 
    align-content: flex-start;
    gap: 12px;
}

.user-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.03);
    transition: box-shadow 0.2s, transform 0.1s, border-color 0.2s;
    width: 380px; 
    flex-shrink: 0; 
    position: relative;
}
.user-item:hover {
    box-shadow: 0 4px 6px rgba(0,0,0,0.06);
    transform: translateY(-1px);
}

.user-item.pressed {
    border-color: rgb(245, 255, 241);
    background-color: #ffffff;
}

.user-item.winner-glow {
    border: 2px solid #a3ff97;
    background-color: #f5fdf7;
    animation: glow-pulse 1.5s infinite;
}

.rank-badge {
    position: absolute;
    top: -8px;
    left: -8px;
    background-color: var(--primary-color);
    color: rgb(0, 0, 0);
    border: 2px solid #474747;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 2px;
    font-size: 0.8rem;
    z-index: 10;
}
.user-item.winner-glow .rank-badge {
    background-color: #ffffff;
    color: #000000;
}

.user-info-col {
    display: flex;
    flex-direction: column; 
    gap: 2px; 
    overflow: hidden;
    margin-right: 16px;
    flex-grow: 1;
    justify-content: center;
}

.user-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 12em; 
    line-height: 1.3;
    transition: font-size 0.2s;
}

.user-name.medium-font { font-size: 1.1rem; }
.user-name.small-font { font-size: 0.95rem; }

.user-flavor {
    font-size: 0.75rem;
    color: var(--text-sub);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-height: 1.2em;
    font-weight: 500;
    max-width: 16em; 
}

.user-stats-col {
    display: flex;
    align-items: center;
    gap: 8px; 
    flex-shrink: 0; 
}

.stat-box {
    background-color: #f3f4f6;
    border-radius: var(--radius-md);
    padding: 6px 10px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 52px;
}

.stat-label {
    font-size: 0.6rem;
    color: var(--text-sub);
    margin-bottom: 0px;
    text-transform: uppercase;
    font-weight: 600;
}

.stat-value {
    font-size: 1.6rem; 
    font-weight: 800;
    color: var(--text-main);
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

.button-area {
    flex-shrink: 0;
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    height: 30vh;
    min-height: 200px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 20px;
    position: relative;
    z-index: 100;
}

.chat-container {
    width: 50%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.chat-messages {
    flex-grow: 1;
    overflow-y: auto;
    background-color: #f9fafb;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-msg {
    font-size: 0.95rem;
    line-height: 1.6;
    background-color: #fff;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    max-width: 100%;
    word-break: break-all;
    box-shadow: 0 1px 1px 0 rgba(0,0,0,0.05);
}

.chat-user-name {
    color: var(--text-sub);
    font-weight: 700;
    font-size: 0.9em;
}

.chat-time {
    color: #9ca3af;
    font-size: 0.8em;
    margin-left: 8px;
    float: right;
    margin-top: 2px;
}

.chat-input-area {
    display: flex;
    align-items: center;
    gap: 10px;
}

.chat-input {
    flex-grow: 1;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 0.95rem;
    background-color: #fff;
    transition: all 0.2s;
}
.chat-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.chat-send-btn {
    border-radius: var(--radius-md);
    background-color: #fff;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.chat-send-btn:hover {
    background-color: #f8fafc;
    border-color: #cbd5e1;
}

.buzz-button-container {
    width: 50%;
    height: 100%;
}

#player-controls {
    display: flex;
    justify-content: center;
    align-items: stretch;
    height: 100%;
}

.buzz-button {
    width: 100%;
    height: 100%;
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--danger-color);
    background-color: #fff;
    border: 2px solid var(--danger-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--danger-color), 0 4px 10px rgba(239, 68, 68, 0.2);
    cursor: pointer;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    top: 0;
}

.buzz-button:active {
    top: 2px;
    background-color: #fef2f2;
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--danger-color);
}

#quizmaster-controls {
    display: none;
    flex-direction: row;
    height: 100%;
    gap: 12px;
}

.qa-button {
    flex-grow: 1;
    font-size: 1.1rem;
    font-weight: 700;
    background-color: #fff;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.1s;
    position: relative;
    top: 0;
}
.qa-button:active {
    top: 1px;
}

.qa-button.correct { 
    color: var(--success-color);
    border: 2px solid var(--success-color);
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--success-color);
}
.qa-button.incorrect { 
    color: var(--danger-color);
    border: 2px solid var(--danger-color);
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--danger-color);
}
.qa-button.through { 
    color: #4b5563;
    border: 2px solid #4b5563;
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px #4b5563;
}

.qa-button.undo {
    color: #374151;
    border: 2px solid #d1d5db;
    background-color: #f3f4f6;
    flex-grow: 0.4;
    min-width: 60px;
    font-size: 0.9rem;
}

body.mode-player #player-controls { display: flex; }
body.mode-player #quizmaster-controls { display: none; }
body.mode-quizmaster #player-controls { display: none; }
body.mode-quizmaster #quizmaster-controls { display: flex; }

.resize-handle {
    display: none;
}

.rule-notification {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.rule-notification.show {
    opacity: 1;
}

.rule-notification-content {
    background-color: #fff;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    text-align: center;
    max-width: 80%;
    width: 400px;
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid #e5e7eb;
}

.rule-notification.show .rule-notification-content {
    transform: scale(1);
}

#rule-notification-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 10px 0;
    color: #111827;
}

#rule-notification-desc {
    font-size: 0.95rem;
    color: #6b7280;
    margin: 0;
    line-height: 1.5;
}

.user-item.state-lose {
    background-color: #374151;
    border-color: #1f2937;
    color: #9ca3af;
    position: relative;
    overflow: hidden;
}
.user-item.state-lose::before {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    pointer-events: none;
    z-index: 1;
}
.user-item.state-lose::after {
    content: "LOSE";
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%) rotate(-10deg);
    font-size: 4rem;
    font-weight: 900;
    color: #000;
    opacity: 0.3;
    z-index: 2;
    pointer-events: none;
    letter-spacing: 0.1em;
}
.user-item.state-lose .user-info-col,
.user-item.state-lose .user-stats-col {
    opacity: 0.5;
    z-index: 0;
}

.user-item.state-locked {
    background-color: #e5e7eb;
    border-color: #d1d5db;
    color: #6b7280;
    position: relative;
}
.user-item.state-locked::after {
    content: "LOCK";
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    font-weight: 700;
    color: #9ca3af;
    opacity: 0.3;
    pointer-events: none;
    z-index: 1;
}

.user-item.state-win {
    background-color: #ffffff;
    border: 1px solid #d1d5db;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
}

.win-rank-badge {
    position: absolute;
    top: 50%;
    right: 20px;
    left: auto;
    transform: translateY(-50%); 
    
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 12px 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    
    display: flex;
    align-items: baseline;
    gap: 12px;
    white-space: nowrap;
    z-index: 20;

    animation: popIn 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes popIn {
    0% {
        opacity: 0;
        transform: translate(0, -50%) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translate(0, -50%) scale(1);
    }
}

.win-label {
    font-family: sans-serif;
    font-weight: 900;
    font-size: 2.2rem;
    color: #111827; 
    letter-spacing: 0.05em;
}

.rank-label {
    font-family: sans-serif;
    font-weight: 700;
    font-size: 1.8rem;
    color: #4b5563; 
}

.user-item.state-win .user-info-col,
.user-item.state-win .user-stats-col {
    opacity: 0.3;
    filter: blur(1px);
}

.buzz-button:disabled {
    background-color: #d1d5db;
    color: #9ca3af;
    border-color: #9ca3af;
    cursor: not-allowed;
    box-shadow: none;
    top: 4px;
}

@media (max-width: 768px) {
    /* テーブルレイアウトを維持する設定 */
    .room-table {
        width: 100%;
        border: 1px solid var(--border-color);
        background-color: var(--surface-color);
        box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
        border-radius: var(--radius-md);
    }
    .room-table thead { 
        display: table-header-group; 
    }
    .room-table tbody tr {
        display: table-row;
        flex-wrap: nowrap;
        margin-bottom: 0;
        padding: 0;
        box-shadow: none;
        border-radius: 0;
        border-bottom: 1px solid var(--border-color);
    }
    .room-table tbody td {
        display: table-cell;
        padding: 8px 4px;
        border: none;
        vertical-align: middle;
        text-align: center;
    }
    
    .room-table th, .room-table td {
        font-size: 0.85rem;
        white-space: nowrap;
    }
    
    .room-table td:nth-child(2),
    .room-table th:nth-child(2) {
        text-align: left;
        white-space: normal;
        width: auto;
        padding-left: 8px !important;
    }

    .room-table td:nth-child(1),
    .room-table th:nth-child(1) {
        width: 40px;
        padding-left: 8px;
    }
    
    .room-table tbody td:nth-child(1),
    .room-table tbody td:nth-child(3) {
        display: table-cell;
        margin-right: 0;
    }
    
    .room-table tbody td:nth-child(4) {
        width: auto;
        text-align: right;
        margin-top: 0;
        padding-top: 8px;
        border-top: none;
    }

    /* 以下は他の要素（ユーザーリストなど）のスタイル */
    .user-list-area {
        display: flex;
        flex-direction: column;
        flex-wrap: nowrap;
        overflow-x: hidden;
        overflow-y: auto; 
        align-content: stretch;
        padding-bottom: 0;
    }
    .user-item {
        width: 100%;
        padding: 14px;
    }

    .button-area {
        height: auto; 
        min-height: 0;
        padding: 0 12px;
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
        gap: 8px;
        display: flex; 
        flex-direction: column;
    }
    
    .chat-container {
        width: 100%;
        height: 150px; 
        flex: none; 
        min-height: 80px;
        max-height: none; 
        margin-bottom: 0;
        display: flex;
        flex-direction: column;
        padding: 0;
    }
    
    .chat-messages {
        flex-grow: 1;
        margin-bottom: 8px;
        padding: 8px;
    }
    
    .chat-input-area {
        width: 100%;
        gap: 6px;
    }
    .chat-input {
        padding: 8px;
    }
    .chat-send-btn {
        padding: 8px 12px;
    }

    .resize-handle {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 24px; 
        width: 100%;
        cursor: row-resize;
        flex-shrink: 0;
        touch-action: none;
        background-color: var(--surface-color);
        border-bottom: 1px solid var(--border-color);
        margin-bottom: 4px;
    }
    .handle-bar {
        width: 40px;
        height: 4px;
        background-color: #d1d5db;
        border-radius: 2px;
    }

    .buzz-button-container {
        width: 100%;
        flex-grow: 1; 
        min-height: 100px;
        max-height: 150px;
        flex-shrink: 0;
        padding: 6px; 
    }
    
    #player-controls, 
    #quizmaster-controls {
        height: 100%;
        width: 100%;
    }
    
    .buzz-button {
        font-size: 1.2rem;
        border-radius: var(--radius-md);
        box-shadow: 
            0 0 0 2px #fff, 
            0 0 0 4px var(--danger-color);
        margin: 0;
    }
    
    #quizmaster-controls {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        grid-template-rows: 1fr 40px;
        gap: 8px;
    }
    .qa-button.undo {
        grid-column: 1 / -1; 
        height: 100%;
    }
    .qa-button {
        font-size: 0.8rem;
    }
}