* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 2em;
    margin-bottom: 5px;
}

header p {
    opacity: 0.9;
    margin-bottom: 20px;
}

.header-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
}

.tab-button {
    flex: 1;
    padding: 15px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s;
}

.tab-button:hover {
    background: #e9ecef;
}

.tab-button.active {
    background: white;
    border-bottom: 3px solid #667eea;
    font-weight: bold;
}

.tab-content {
    display: none;
    padding: 20px;
}

.tab-content.active {
    display: block;
}

.search-box {
    margin-bottom: 20px;
}

.search-box input {
    width: 100%;
    padding: 12px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.search-box input:focus {
    outline: none;
    border-color: #667eea;
}

.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.template-card {
    border: 2px solid #e0e0e0;
    padding: 20px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    background: white;
}

.template-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    border-color: #667eea;
}

.template-card h4 {
    color: #333;
    margin-bottom: 10px;
    font-size: 18px;
}

.template-card p {
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
    min-height: 40px;
}

.template-card .card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e0e0e0;
}

.template-card .category-badge {
    background: #667eea;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
}

.template-card small {
    color: #999;
}

.document-list {
    max-width: 1000px;
    margin: 0 auto;
}

.document-item {
    border: 1px solid #e0e0e0;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
}

.document-item:hover {
    background: #f8f9fa;
    border-color: #667eea;
}

.document-info {
    flex: 1;
}

.document-info h4 {
    color: #333;
    margin-bottom: 5px;
}

.document-info small {
    color: #666;
    display: block;
}

.document-actions {
    display: flex;
    gap: 10px;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
    backdrop-filter: blur(3px);
}

.modal-content {
    background-color: white;
    margin: 2% auto;
    padding: 0;
    width: 95%;
    height: 90%;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.upload-modal {
    width: 600px;
    height: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.modal-header h2 {
    font-size: 24px;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 32px;
    cursor: pointer;
    line-height: 1;
    transition: transform 0.2s;
}

.close-btn:hover {
    transform: scale(1.2);
}

#luckysheet {
    flex: 1;
    width: 100%;
}

.modal-footer {
    display: flex;
    gap: 10px;
    padding: 15px 30px;
    background: #f8f9fa;
    border-top: 1px solid #e0e0e0;
    justify-content: flex-end;
    align-items: center;
}

.doc-name-input {
    flex: 1;
    padding: 10px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
}

.doc-name-input:focus {
    outline: none;
    border-color: #667eea;
}

.upload-form {
    padding: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input[type="text"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input[type="file"] {
    width: 100%;
    padding: 10px;
    border: 2px dashed #e0e0e0;
    border-radius: 6px;
    cursor: pointer;
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 12px;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    padding: 10px 24px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

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

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

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.loading-overlay.active {
    display: flex;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay p {
    color: white;
    margin-top: 20px;
    font-size: 18px;
}

/* Responsive */
@media (max-width: 768px) {
    .template-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 100%;
        height: 100%;
        margin: 0;
        border-radius: 0;
    }
    
    .upload-modal {
        width: 100%;
    }
}

/* Luckysheet input box ve overlay'lerinin modal üzerinde görünmesi için z-index düzeltmeleri */
#luckysheet-input-box {
    z-index: 1002 !important;
}
#luckysheet-formula-functionrange-select {
    z-index: 1002 !important;
}
#luckysheet-row-count-show,
#luckysheet-column-count-show {
    z-index: 1002 !important;
}
.luckysheet-modal-dialog-mask {
    z-index: 1001 !important;
}
.luckysheet-modal-dialog {
    z-index: 1002 !important;
}
#luckysheet-cell-selected-focus,
#luckysheet-cell-selected-boxs,
#luckysheet-cell-selected {
    z-index: 1001 !important;
}