/* 席替えメーカー CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    color: white;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

header p {
    font-size: 1.2em;
    opacity: 0.9;
}

main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
    align-items: start;
}

/* パネル制御 */
.panel-controls {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.toggle-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s;
}

.toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.save-load-controls {
    display: flex;
    gap: 10px;
}

.control-btn {
    background: #f8f9fa;
    color: #495057;
    border: 2px solid #dee2e6;
    border-radius: 6px;
    padding: 8px 15px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.control-btn:hover {
    background: #e9ecef;
    transform: translateY(-1px);
}

.config-section {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.config-section.collapsed {
    display: none;
}

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

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #555;
}

.input-group input[type="number"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.input-group input[type="number"]:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    resize: vertical;
    min-height: 120px;
    transition: border-color 0.3s;
}

.input-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 25px;
}

/* 列制約設定のスタイル */
.constraints-section {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 2px solid #f0f0f0;
}

/* 行制約設定のスタイル */
.row-constraints-section {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 2px solid #f0f0f0;
}

/* 固定席設定のスタイル */
.fixed-seats-section {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 2px solid #f0f0f0;
}

.constraints-section h3,
.fixed-seats-section h3 {
    color: #555;
    margin-bottom: 8px;
    font-size: 1.1em;
}

.constraints-description {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 15px;
    line-height: 1.4;
}

.column-constraints {
    margin-bottom: 15px;
}

.fixed-seats {
    margin-bottom: 15px;
}

.row-constraints {
    margin-bottom: 15px;
}

.constraint-item,
.fixed-seat-item,
.row-constraint-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    padding: 12px;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #dee2e6;
}

.fixed-seat-item {
    background: #fff3cd;
    border-color: #ffeaa7;
}

.row-constraint-item {
    background: #e8f5e8;
    border-color: #c8e6c9;
}

.constraint-item select,
.constraint-item input,
.fixed-seat-item select,
.fixed-seat-item input,
.row-constraint-item select,
.row-constraint-item input {
    padding: 6px 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
}

.constraint-item select,
.fixed-seat-item select,
.row-constraint-item select {
    min-width: 120px;
}

.constraint-item input,
.fixed-seat-item input,
.row-constraint-item input {
    width: 60px;
    text-align: center;
}

.constraint-label {
    font-size: 14px;
    color: #555;
    white-space: nowrap;
}

.remove-constraint-btn {
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 6px 10px;
    cursor: pointer;
    font-size: 12px;
    transition: background-color 0.2s;
}

.remove-constraint-btn:hover {
    background: #c82333;
}

.add-constraint-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.3s;
    width: 100%;
}

.add-constraint-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(40, 167, 69, 0.3);
}

.primary-btn,
.secondary-btn,
.export-btn {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    flex: 1;
}

.primary-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.secondary-btn {
    background: #f8f9fa;
    color: #6c757d;
    border: 2px solid #dee2e6;
}

.secondary-btn:hover {
    background: #e9ecef;
    transform: translateY(-1px);
}

.result-section {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
}

.result-section h2 {
    margin-bottom: 20px;
    color: #555;
    text-align: center;
}

.seating-chart {
    border: 2px solid #ddd;
    border-radius: 10px;
    padding: 20px;
    background: #f8f9fa;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.empty-state {
    text-align: center;
    color: #6c757d;
    font-style: italic;
}

.desk-grid {
    display: grid;
    gap: 8px;
    justify-content: center;
    width: 100%;
}

.desk {
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 12px 8px;
    text-align: center;
    font-weight: bold;
    color: #333;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
    font-size: 14px;
    word-break: break-all;
}

.desk:hover {
    transform: scale(1.05);
}

.desk.empty {
    background: #f8f9fa;
    color: #adb5bd;
    border-style: dashed;
}

.desk.fixed-seat {
    background: linear-gradient(145deg, #fff3cd, #ffeaa7);
    border: 2px solid #f39c12;
    color: #856404;
    position: relative;
}

.desk.fixed-seat::before {
    content: "🔒";
    position: absolute;
    top: 2px;
    right: 4px;
    font-size: 12px;
    opacity: 0.7;
}

/* ドラッグ&ドロップのスタイル */
.desk.draggable {
    cursor: move;
    user-select: none;
}

.desk.dragging {
    opacity: 0.5;
    transform: rotate(5deg);
}

.desk.drop-target {
    background: linear-gradient(145deg, #e3f2fd, #bbdefb);
    border: 2px dashed #2196f3;
}

.desk.drop-active {
    background: linear-gradient(145deg, #c8e6c9, #a5d6a7);
    border: 2px solid #4caf50;
}

.export-section {
    margin-top: 20px;
    text-align: center;
}

.export-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.export-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

.export-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.4);
}

/* インポートセクション */
.import-section {
    margin-top: 10px;
}

.import-btn {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

.import-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.4);
}

footer {
    text-align: center;
    margin-top: 30px;
    color: white;
    opacity: 0.8;
}

.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #28a745;
    color: white;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transform: translateX(400px);
    transition: transform 0.3s;
    z-index: 1000;
    display: none;
}

.toast.show {
    transform: translateX(0);
    display: block;
}

.toast.success {
    background: #28a745;
}

.toast.error {
    background: #dc3545;
}

.toast.warning {
    background: #ffc107;
    color: #212529;
}

.toast.info {
    background: #17a2b8;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    header h1 {
        font-size: 2em;
    }

    .container {
        padding: 15px;
    }

    .config-section,
    .result-section {
        padding: 20px;
    }

    .button-group {
        flex-direction: column;
    }

    .desk {
        font-size: 12px;
        min-height: 50px;
        padding: 8px 4px;
    }

    .constraint-item {
        flex-direction: column;
        gap: 8px;
        align-items: stretch;
    }

    .constraint-item select,
    .constraint-item input {
        width: 100%;
    }

    .fixed-seat-item {
        flex-direction: column;
        gap: 8px;
        align-items: stretch;
    }

    .fixed-seat-item select,
    .fixed-seat-item input {
        width: 100%;
    }

    .row-constraint-item {
        flex-direction: column;
        gap: 8px;
        align-items: stretch;
    }

    .row-constraint-item select,
    .row-constraint-item input {
        width: 100%;
    }

    .export-buttons {
        flex-direction: column;
    }

    .panel-controls {
        flex-direction: column;
        gap: 15px;
    }

    .save-load-controls {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .desk-grid {
        gap: 4px;
    }

    .desk {
        font-size: 11px;
        min-height: 45px;
        padding: 6px 2px;
    }
}