/* ===================================
   共通スタイル
   =================================== */
.blockfill-teacher-root,
.blockfill-player-root {
    --blockfill-cell: 42px;
    --blockfill-gap: 3px;
    --blockfill-next-cell: 22px;
    font-family: 'Helvetica Neue', Arial, 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f0f2f5 !important;
    color: #333 !important;
}

.blockfill-teacher-root * {
    box-sizing: border-box;
}

.blockfill-player-root * {
    box-sizing: border-box;
    user-select: none;
}

/* ===================================
   先生画面
   =================================== */
.blockfill-teacher-header {
    text-align: center;
    margin-bottom: 30px;
}

.blockfill-teacher-header h2 {
    color: #1e3a5f !important;
    font-size: 28px !important;
    margin: 0 0 10px 0 !important;
}

.blockfill-subtitle {
    color: #666 !important;
    font-size: 16px !important;
    margin: 0 !important;
}

.blockfill-qr-section {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    text-align: center;
}

.blockfill-qr-section h3 {
    color: #1e3a5f !important;
    font-size: 22px !important;
    margin: 0 0 20px 0 !important;
}

.blockfill-settings-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
    margin-bottom: 20px;
}

.blockfill-setting-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.blockfill-setting-group label {
    font-weight: 600;
    color: #333 !important;
    min-width: 100px;
}

.blockfill-qr-display-section {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    text-align: center;
}

.blockfill-qr-display-section h3 {
    color: #1e3a5f !important;
    font-size: 22px !important;
    margin: 0 0 15px 0 !important;
}

.blockfill-current-settings {
    margin-bottom: 15px;
    font-size: 16px;
    color: #666 !important;
}

.blockfill-current-settings strong {
    color: #d4af37 !important;
}

.blockfill-qr-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

#blockfill-qrcode {
    padding: 15px;
    background: white;
    border: 2px solid #1e3a5f;
    border-radius: 8px;
}

.blockfill-qr-url {
    font-family: monospace;
    font-size: 14px;
    color: #666 !important;
    word-break: break-all;
    max-width: 500px;
}

.blockfill-btn-secondary {
    background: #d4af37 !important;
    color: white !important;
    border: none !important;
    padding: 12px 24px !important;
    font-size: 16px !important;
    border-radius: 8px !important;
    cursor: pointer !important;
    transition: background 0.3s !important;
}

.blockfill-btn-secondary:hover {
    background: #b8941f !important;
}

.blockfill-results-section h3 {
    color: #1e3a5f !important;
    font-size: 22px !important;
    margin: 0 0 20px 0 !important;
}

.blockfill-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.blockfill-stat-card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
}

.blockfill-stat-value {
    font-size: 36px;
    font-weight: bold;
    color: #1e3a5f !important;
    margin-bottom: 8px;
}

.blockfill-stat-label {
    font-size: 14px;
    color: #666 !important;
}

.blockfill-results-table {
    width: 100%;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-collapse: collapse !important;
}

.blockfill-results-table th {
    background: #1e3a5f !important;
    color: white !important;
    padding: 15px !important;
    text-align: left !important;
    font-weight: 600 !important;
}

.blockfill-results-table td {
    padding: 12px 15px !important;
    border-bottom: 1px solid #eee !important;
    color: #333 !important;
}

.blockfill-results-table tbody tr:last-child td {
    border-bottom: none !important;
}

.blockfill-results-table tbody tr:hover {
    background: #f8f9fa !important;
}

.blockfill-no-data {
    text-align: center !important;
    color: #999 !important;
    font-style: italic !important;
}

/* ===================================
   児童画面（ゲーム）
   =================================== */
.blockfill-game-container {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* 児童画面レイアウト（サイドバー＋パズル） */
.blockfill-game-layout{
    display:flex;
    gap:18px;
    align-items:stretch;
}

.blockfill-sidebar{
    flex:0 0 320px;
    display:flex;
    flex-direction:column;
    gap:16px;
    padding:18px;
    border:2px solid rgba(30,58,95,0.15);
    border-radius:14px;
    background:#fafafa;
}

.blockfill-main{
    flex:1 1 auto;
    display:flex;
    flex-direction:column;
    justify-content:flex-start;
    min-width:0;
}

.blockfill-sidebar-actions{
    display:flex;
    flex-direction:column;
    gap:10px;
    margin-top:auto;
}

@media (max-width: 900px){
    .blockfill-game-layout{ flex-direction:column; }
    .blockfill-sidebar{ flex:1 1 auto; }
    .blockfill-sidebar-actions{ flex-direction:row; }
}

.blockfill-game-title {
    color: #1e3a5f !important;
    font-size: 32px !important;
    margin: 0 0 8px 0 !important;
}

.blockfill-game-subtitle {
    color: #666 !important;
    font-size: 16px !important;
    margin: 0 0 20px 0 !important;
}

.blockfill-name-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 0 0 18px 0;
}

.blockfill-name-label {
    font-weight: 700;
    color: #1e3a5f !important;
    font-size: 16px;
}

.blockfill-name-input {
    width: min(360px, 90vw);
    padding: 10px 12px;
    font-size: 18px;
    border: 2px solid #1e3a5f;
    border-radius: 10px;
    outline: none;
}

.blockfill-name-input:focus {
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.25);
    border-color: #d4af37;
}

.blockfill-status-bar {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.blockfill-score-text {
    font-size: 18px;
    color: #333 !important;
    font-weight: 600;
}

.blockfill-score-text span {
    color: #d4af37 !important;
    font-size: 24px;
    font-weight: bold;
}

.blockfill-grid-container {
    display: grid;
    grid-template-columns: repeat(10, var(--blockfill-cell));
    grid-template-rows: repeat(10, var(--blockfill-cell));
    gap: var(--blockfill-gap);
    background-color: #ccc;
    padding: var(--blockfill-gap);
    border-radius: 8px;
    margin: 0 auto 20px;
    width: fit-content;
}

.blockfill-cell {
    width: var(--blockfill-cell);
    height: var(--blockfill-cell);
    background-color: #fff;
    border: 1px solid #ddd;
    cursor: pointer;
    transition: all 0.2s;
}

.blockfill-cell.blockfill-filled {
    background-color: #1e3a5f !important;
}

.blockfill-cell.blockfill-preview {
    background-color: rgba(30, 58, 95, 0.3) !important;
}

.blockfill-cell.blockfill-invalid {
    background-color: rgba(255, 0, 0, 0.3) !important;
}

.blockfill-controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.blockfill-settings {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.blockfill-select {
    padding: 10px 12px !important;
    font-size: 16px !important;
    border: 2px solid #1e3a5f !important;
    border-radius: 8px !important;
    background: white !important;
    color: #333 !important;
    cursor: pointer !important;
}

.blockfill-btn-primary {
    background: #1e3a5f !important;
    color: white !important;
    border: none !important;
    padding: 12px 30px !important;
    font-size: 18px !important;
    font-weight: bold !important;
    border-radius: 8px !important;
    cursor: pointer !important;
    transition: background 0.3s !important;
}

.blockfill-btn-primary:hover {
    background: #152a45 !important;
}

.blockfill-btn-large {
    font-size: 24px !important;
    padding: 18px 50px !important;
}

.blockfill-waiting-icon {
    font-size: 72px;
    margin-bottom: 20px;
}

#blockfill-result-text h3 {
    color: #1e3a5f !important;
    font-size: 24px !important;
    margin: 20px 0 !important;
}

#blockfill-result-text p {
    font-size: 18px;
    color: #666 !important;
    line-height: 1.8;
}

.blockfill-next-piece-area {
    text-align: center;
}

.blockfill-next-piece-label {
    font-size: 14px;
    color: #666 !important;
    margin-bottom: 10px;
    font-weight: 600;
}

.blockfill-piece-preview {
    display: grid;
    gap: 2px;
    background-color: #ccc;
    padding: 10px;
    border-radius: 8px;
    width: fit-content;
    margin: 0 auto;
}

.blockfill-piece-preview .blockfill-cell {
    width: var(--blockfill-next-cell);
    height: var(--blockfill-next-cell);
}

.blockfill-action-buttons {
    display: flex;
    gap: 10px;
}

.blockfill-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.blockfill-modal.blockfill-active {
    display: flex !important;
}

.blockfill-modal-content {
    background: white;
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    max-width: 400px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

#blockfill-result-text {
    font-size: 18px;
    color: #333 !important;
    margin-bottom: 30px;
    line-height: 1.6;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .blockfill-player-root{ 
        --blockfill-cell: 34px; 
        --blockfill-gap: 2px; 
        --blockfill-next-cell: 20px; 
    }
    
    .blockfill-stats {
        grid-template-columns: 1fr;
    }
    
    .blockfill-results-table {
        font-size: 14px;
    }
    
    .blockfill-results-table th,
    .blockfill-results-table td {
        padding: 8px !important;
    }
    
    .blockfill-game-title {
        font-size: 24px !important;
    }
    
    .blockfill-status-bar {
        flex-direction: column;
        gap: 10px;
    }
}