* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, #6e8efb, #a777e3);
    color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

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

main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.upload-container, .conversion-container, .success-container, .error-container {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.upload-area {
    padding: 3rem 2rem;
    border: 2px dashed #ccc;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover, .upload-area.highlight {
    border-color: #6e8efb;
    background-color: rgba(110, 142, 251, 0.05);
}

.upload-icon {
    margin-bottom: 1rem;
    color: #6e8efb;
}

.upload-area p {
    margin: 0.5rem 0;
    color: #666;
}

.file-input-label {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.8rem 1.5rem;
    background-color: #6e8efb;
    color: white;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.file-input-label:hover {
    background-color: #5a7ae0;
}

.progress-container {
    width: 100%;
    height: 20px;
    background-color: #f0f0f0;
    border-radius: 10px;
    margin: 1.5rem 0;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, #6e8efb, #a777e3);
    border-radius: 10px;
    transition: width 0.3s ease;
}

.success-icon {
    color: #4CAF50;
    margin-bottom: 1rem;
}

.error-icon {
    color: #f44336;
    margin-bottom: 1rem;
}

.download-button {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.8rem 1.5rem;
    background-color: #4CAF50;
    color: white;
    border-radius: 5px;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.download-button:hover {
    background-color: #3e8e41;
}

.fallback-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 0.5rem;
}

.fallback-button {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    background-color: #ff9800;
    color: white;
    border-radius: 5px;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.fallback-button:hover {
    background-color: #e68a00;
}

.gif-button {
    background-color: #2196F3;
}

.gif-button:hover {
    background-color: #0b7dda;
}

.new-file-button {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background-color: #757575;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

.new-file-button:hover {
    background-color: #616161;
}

.try-again-button {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.8rem 1.5rem;
    background-color: #6e8efb;
    color: white;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.try-again-button:hover {
    background-color: #5a7ae0;
}

h2 {
    margin-bottom: 1rem;
    color: #333;
}

#progress-text {
    font-weight: bold;
    color: #666;
}

.conversion-container, .success-container, .error-container {
    margin-top: 2rem;
}

.status-message {
    margin-top: 1rem;
    font-style: italic;
    color: #666;
}

#error-message {
    color: #f44336;
    margin-bottom: 1rem;
}