:root {
            --primary: #4f46e5;
            --primary-light: #6366f1;
            --primary-dark: #4338ca;
            --secondary: #f3f4f6;
            --dark: #1e293b;
            --light: #f8fafc;
            --gray: #64748b;
            --success: #10b981;
            --danger: #ef4444;
            --warning: #f59e0b;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --transition: all 0.3s ease; 
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
        }

        body {
            background-color: #f1f5f9;
            color: var(--dark);
            min-height: 100vh;
            padding: 20px;
            line-height: 1.5;
        }

        .container {
            max-width: 900px;
            margin: 0 auto;
            padding: 20px 0;
        }

        header {
            text-align: center;
            margin-bottom: 40px;
            padding: 0 20px;
        }

        .logo {
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            background-color: var(--primary);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 28px;
            font-weight: bold;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
        }

        h1 {
            font-size: 32px;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .tagline {
            color: var(--gray);
            font-size: 16px;
            max-width: 500px;
            margin: 0 auto;
        }

        .format-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
            margin: 15px auto 0;
            max-width: 80%;
        }

        .format-tag {
            background-color: rgba(79, 70, 229, 0.1);
            color: var(--primary-dark);
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 12px;
        }

        .upload-container {
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 20px;
            margin-bottom: 30px;
            transition: var(--transition);
        }

        .drop-area {
            border: 2px dashed var(--primary-light);
            border-radius: var(--radius);
            padding: 40px 20px;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

        .drop-area:hover, .drop-area.drag-over {
            border-color: var(--primary);
            background-color: rgba(79, 70, 229, 0.03);
        }

        .drop-icon {
            font-size: 56px;
            color: var(--primary);
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .drop-area:hover .drop-icon {
            transform: scale(1.05);
        }

        .drop-text h3 {
            font-size: 20px;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .drop-text p {
            color: var(--gray);
            font-size: 14px;
            max-width: 400px;
            margin: 0 auto 20px;
        }

        .browse-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 10px 24px;
            border-radius: 6px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            font-size: 14px;
        }

        .browse-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        #file-input {
            display: none;
        }

        .settings {
            max-width: 900px;
            margin: 0 auto;
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 25px;
            margin-bottom: 30px;
        }

        .settings h3 {
            margin-bottom: 20px;
            font-size: 18px;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .settings h3 svg {
            width: 20px;
            height: 20px;
            color: var(--primary);
        }

        .settings-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
        }

        .setting-group {
            margin-bottom: 0;
        }

        .setting-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            color: var(--gray);
            font-weight: 500;
        }

        .setting-control {
            width: 100%;
            padding: 10px 12px;
            border: 1px solid #e2e8f0;
            border-radius: 6px;
            font-size: 14px;
            transition: var(--transition);
        }

        .setting-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }

        .format-note {
            font-size: 12px;
            color: var(--gray);
            margin-top: 4px;
            font-style: italic;
        }

        .action-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 6px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            font-size: 16px;
            width: 100%;
            margin-top: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .action-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
        }

        .action-btn svg {
            width: 18px;
            height: 18px;
        }

        .files-list {
            margin-top: 30px;
            max-height: 300px;
            overflow-y: auto;
            padding-right: 10px;
        }

        .file-item {
            background: white;
            border-radius: 6px;
            padding: 15px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

        .file-item:hover {
            transform: translateX(4px);
        }

        .file-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .file-icon {
            width: 40px;
            height: 40px;
            background-color: rgba(79, 70, 229, 0.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }

        .file-details {
            overflow: hidden;
        }

        .file-name {
            font-weight: 500;
            font-size: 14px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 200px;
        }

        .file-size {
            font-size: 12px;
            color: var(--gray);
        }

        .file-format {
            font-size: 11px;
            color: white;
            background-color: var(--primary-light);
            padding: 2px 6px;
            border-radius: 4px;
            margin-left: 5px;
        }

        .remove-file {
            background: none;
            border: none;
            color: var(--gray);
            cursor: pointer;
            transition: var(--transition);
            padding: 4px;
        }

        .remove-file:hover {
            color: var(--danger);
        }

        .info-bar {
            background-color: rgba(79, 70, 229, 0.1);
            border-left: 4px solid var(--primary);
            padding: 12px 15px;
            border-radius: 0 6px 6px 0;
            margin-bottom: 30px;
            font-size: 14px;
            color: var(--dark);
        }

        .format-notice {
            background-color: rgba(245, 158, 11, 0.1);
            border-left: 4px solid var(--warning);
            padding: 12px 15px;
            border-radius: 0 6px 6px 0;
            margin-bottom: 20px;
            font-size: 13px;
            color: var(--dark);
        }

        .browser-warning {
            background-color: rgba(239, 68, 68, 0.1);
            border-left: 4px solid var(--danger);
            padding: 12px 15px;
            border-radius: 0 6px 6px 0;
            margin-bottom: 20px;
            font-size: 13px;
            color: var(--dark);
            display: none;
        }

        footer {
            text-align: center;
            margin-top: 60px;
            padding: 20px;
            font-size: 14px;
            color: var(--gray);
        }

        .processing-modal {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .processing-modal.active {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            background-color: white;
            padding: 30px;
            border-radius: var(--radius);
            text-align: center;
            max-width: 90%;
            width: 400px;
            transform: translateY(20px);
            transition: var(--transition);
        }

        .processing-modal.active .modal-content {
            transform: translateY(0);
        }

        .spinner {
            width: 50px;
            height: 50px;
            border: 5px solid rgba(79, 70, 229, 0.1);
            border-top-color: var(--primary);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 20px;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        @media (max-width: 600px) {
            h1 {
                font-size: 26px;
            }

            .upload-container {
                padding: 30px 15px;
            }

            .drop-area {
                padding: 30px 15px;
            }

            .settings {
                padding: 20px 15px;
            }

            .settings-grid {
                grid-template-columns: 1fr;
            }

            .file-name {
                max-width: 150px;
            }

            .format-tags {
                max-width: 100%;
            }
        }
        
        
.links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}
.link-item:hover {
    background: #4f46e5;
    color: white;
    transform: translateY(-2px);
}
.link-item {
    padding: 8px 16px;
    background: #ecf0f1;
    border-radius: 20px;
    text-decoration: none;
    color: #34495e;
    font-size: 14px;
    transition: all 0.3s ease;
    display: inline-block;
}