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

        body {
            font-family: Arial, sans-serif;
            background: #1a1a2e;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            color: #eee;
        }

        .container {
            background: #16213e;
            border-radius: 8px;
            padding: 30px;
            max-width: 600px;
            width: 100%;
            border: 1px solid #0f3460;
        }

        h1 {
            color: #00d9ff;
            margin-bottom: 20px;
            font-size: 24px;
            font-weight: normal;
        }

        .upload-area {
            border: 2px dashed #0f3460;
            border-radius: 4px;
            padding: 40px;
            text-align: center;
            cursor: pointer;
            background: #0f3460;
            transition: all 0.2s;
        }

        .upload-area:hover {
            background: #1a4d7a;
            border-color: #00d9ff;
        }

        .upload-area.dragover {
            background: #1a4d7a;
            border-color: #00d9ff;
        }

        .upload-text {
            color: #00d9ff;
            font-size: 16px;
        }

        input[type="file"] {
            display: none;
        }

        .options {
            margin-top: 20px;
        }

        label {
            display: block;
            color: #aaa;
            margin-bottom: 6px;
            font-size: 13px;
        }

        input[type="text"], input[type="number"] {
            width: 100%;
            padding: 10px;
            border: 1px solid #0f3460;
            border-radius: 4px;
            font-size: 14px;
            background: #0f3460;
            color: #fff;
            margin-bottom: 15px;
        }

        input[type="text"]:focus, input[type="number"]:focus {
            outline: none;
            border-color: #00d9ff;
        }

        .btn {
            width: 100%;
            padding: 12px;
            background: #00d9ff;
            color: #000;
            border: none;
            border-radius: 4px;
            font-size: 14px;
            font-weight: bold;
            cursor: pointer;
            margin-top: 10px;
        }

        .btn:hover:not(:disabled) {
            background: #00b8d4;
        }

        .btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
        }

        .status {
            margin-top: 15px;
            padding: 12px;
            border-radius: 4px;
            font-size: 13px;
            display: none;
        }

        .status.info {
            background: #1e3a5f;
            color: #00d9ff;
            display: block;
        }

        .status.success {
            background: #1e5f3a;
            color: #00ff88;
            display: block;
        }

        .status.error {
            background: #5f1e1e;
            color: #ff6b6b;
            display: block;
        }

        .file-list {
            margin-top: 15px;
            max-height: 150px;
            overflow-y: auto;
            background: #0f3460;
            border-radius: 4px;
            padding: 10px;
            display: none;
            font-size: 12px;
        }

        .file-list.show {
            display: block;
        }

        .file-item {
            padding: 4px 0;
            color: #aaa;
            border-bottom: 1px solid #1a4d7a;
        }

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

        .file-count {
            color: #00d9ff;
            font-weight: bold;
            margin-bottom: 8px;
        }

        .progress {
            margin-top: 10px;
            height: 4px;
            background: #0f3460;
            border-radius: 2px;
            overflow: hidden;
            display: none;
        }

        .progress.show {
            display: block;
        }

        .progress-bar {
            height: 100%;
            background: #00d9ff;
            width: 0%;
            transition: width 0.3s;
        }