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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            /** background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); **/
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }

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

        .header h1 {
            font-size: 28px;
            margin-bottom: 10px;
        }

        .header p {
            opacity: 0.9;
            font-size: 14px;
        }

        .upload-area {
            padding: 40px;
            border-bottom: 1px solid #e0e0e0;
        }

        .drop-zone {
            border: 3px dashed #667eea;
            border-radius: 12px;
            padding: 40px 20px;
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
            background: #f8f9ff;
        }

        .drop-zone:hover,
        .drop-zone.drag-over {
            border-color: #764ba2;
            background: #f0f2ff;
            transform: scale(1.01);
        }

        .drop-zone-icon {
            font-size: 48px;
            margin-bottom: 20px;
        }

        .drop-zone-text {
            font-size: 18px;
            color: #333;
            margin-bottom: 10px;
        }

        .drop-zone-hint {
            font-size: 14px;
            color: #666;
        }

        #fileInput {
            display: none;
        }

        .file-list-area {
            padding: 40px;
        }

        .file-list-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .file-list-title {
            font-size: 20px;
            font-weight: 600;
            color: #333;
        }

        .refresh-btn {
            background: #667eea;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 14px;
            transition: all 0.3s;
        }

        .refresh-btn:hover {
            background: #764ba2;
            transform: translateY(-2px);
        }

        .file-list {
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid #e0e0e0;
        }

        .file-list table {
            width: 100%;
            border-collapse: collapse;
        }

        .file-list thead {
            background: #f5f5f5;
        }

        .file-list th {
            padding: 15px 20px;
            text-align: left;
            font-weight: 600;
            color: #666;
            font-size: 14px;
            border-bottom: 1px solid #e0e0e0;
        }

        .file-list td {
            padding: 20px;
            border-bottom: 1px solid #e0e0e0;
            vertical-align: middle;
        }

        .file-item {
            transition: background 0.2s;
        }

        .file-item:last-child td {
            border-bottom: none;
        }

        .file-item:hover {
            background: #f8f9ff;
        }

        .file-name {
            font-weight: 500;
            color: #333;
            word-break: break-all;
        }

        .file-time {
            color: #666;
            font-size: 14px;
        }

        .file-ttl {
            color: #667eea;
            font-weight: 500;
        }

        .file-type {
            color: #666;
            font-size: 14px;
        }

        .file-size {
            color: #666;
            font-size: 14px;
        }

        .file-url {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .url-link {
            color: #667eea;
            text-decoration: none;
            font-size: 14px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            flex: 1;
        }

        .url-link:hover {
            text-decoration: underline;
        }

        .copy-btn {
            background: #667eea;
            color: white;
            border: none;
            padding: 6px 12px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 12px;
            white-space: nowrap;
            transition: all 0.2s;
        }

        .copy-btn:hover {
            background: #764ba2;
        }

        .copy-btn:active {
            transform: scale(0.95);
        }

        .empty-state {
            text-align: center;
            padding: 0px 20px;
            color: #999;
        }

        .empty-icon {
            font-size: 64px;
            margin-bottom: 20px;
            opacity: 0.3;
        }

        .loading {
            text-align: center;
            padding: 40px;
            color: #667eea;
        }

        .toast {
            position: fixed;
            top: 20px;
            right: 20px;
            background: #333;
            color: white;
            padding: 15px 25px;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
            z-index: 1000;
            animation: slideIn 0.3s ease;
        }

        .toast.success {
            background: #4caf50;
        }

        .toast.error {
            background: #f44336;
        }

        @keyframes slideIn {
            from {
                transform: translateX(400px);
                opacity: 0;
            }

            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        .uploading {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
            z-index: 1001;
            text-align: center;
        }

        .spinner {
            border: 4px solid #f3f3f3;
            border-top: 4px solid #667eea;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            animation: spin 1s linear infinite;
            margin: 0 auto 20px;
        }

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

            100% {
                transform: rotate(360deg);
            }
        }

        .password-area {
            padding: 30px 40px;
            border-bottom: 1px solid #e0e0e0;
        }

        .password-input-group {
            display: flex;
            align-items: center;
            gap: 15px;
            max-width: 500px;
        }

        .password-label {
            font-size: 20px;
            font-weight: 600;
            color: #333;
            white-space: nowrap;
        }

        .password-input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 14px;
            transition: all 0.3s;
            outline: none;
        }

        .password-input:focus {
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        @media (max-width: 768px) {

            .file-item,
            .file-item-header {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .file-item>div::before {
                content: attr(data-label);
                font-weight: 600;
                margin-right: 10px;
                color: #666;
            }

            .file-item-header {
                display: none;
            }

            .password-input-group {
                flex-direction: column;
                align-items: stretch;
            }
        }