:root {
    --primary-color: #4361ee;
    --primary-hover: #3a56d4;
    --secondary-color: #f72585;
    --background-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #333333;
    --text-light: #6c757d;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

h1 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
}

.extraction-container {
    margin: 2rem 0;
}

.extraction-box {
    border-radius: 10px;
    padding: 3rem;
    text-align: center;
    background-color: var(--card-bg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.extraction-icon {
    fill: var(--primary-color);
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
}

.extraction-text h3 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.extraction-text p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.extraction-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 400px;
    margin: 0 auto;
}

.input-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

.input-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
}

.primary-btn, .secondary-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
}

.primary-btn:hover {
    background-color: var(--primary-hover);
}

.secondary-btn {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.secondary-btn:hover {
    background-color: rgba(0,0,0,0.05);
}

.file-container {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-top: 2rem;
}

.file-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.file-name {
    font-weight: bold;
    font-size: 1.1rem;
}

.file-size {
    color: var(--text-light);
}

.file-details {
    display: flex;
    margin-bottom: 2rem;
    gap: 2rem;
    align-items: center;
}

.file-preview {
    background-color: #f1f3f9;
    width: 120px;
    height: 120px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.file-icon {
    width: 60px;
    height: 60px;
    fill: var(--primary-color);
}

.file-metadata {
    flex: 1;
}

.metadata-item {
    margin-bottom: 0.75rem;
}

.metadata-label {
    font-weight: 600;
    margin-right: 0.5rem;
}

.metadata-value {
    color: var(--text-light);
}

.download-section {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.download-message {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    padding: 0.75rem 2rem;
}

.download-icon {
    fill: white;
    width: 20px;
    height: 20px;
    margin-right: 0.5rem;
}

.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255,255,255,0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.spinner {
    width: 50px;
    height: 50px;
    animation: rotate 2s linear infinite;
}

.path {
    stroke: var(--primary-color);
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

.loader-text {
    margin-top: 1rem;
    font-weight: 600;
    color: var(--primary-color);
}

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

@keyframes dash {
    0% {
        stroke-dasharray: 1, 150;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -35;
    }
    100% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -124;
    }
}

@media (max-width: 768px) {
    .extraction-box {
        padding: 2rem 1rem;
    }
    
    .file-details {
        flex-direction: column;
        gap: 1rem;
    }
    
    .file-preview {
        margin: 0 auto;
    }
    
    .file-metadata {
        text-align: center;
    }
}