/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Main content */
main {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    flex: 1;
}

/* Upload section */
.upload-section {
    margin-bottom: 30px;
}

.upload-area {
    border: 3px dashed #ddd;
    border-radius: 15px;
    padding: 40px 20px;
    text-align: center;
    background: #fafafa;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: #667eea;
    background: #f0f4ff;
}

.upload-area.dragover {
    border-color: #667eea;
    background: #e8f0ff;
    transform: scale(1.02);
}

.upload-content {
    pointer-events: none;
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.upload-area p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 20px;
}

.browse-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    pointer-events: all;
}

.browse-btn:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
}

/* File info */
.file-info {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 15px;
}

.file-details {
    display: flex;
    flex-direction: column;
}

.file-name {
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.file-size {
    font-size: 0.9rem;
    color: #666;
}

.remove-btn {
    background: #ff6b6b;
    color: white;
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-btn:hover {
    background: #ff5252;
}

/* Options section */
.options-section {
    margin-bottom: 30px;
}

/* Model info card */
.model-info {
    margin-bottom: 20px;
}

.info-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.model-icon {
    font-size: 2rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    height: 60px;
}

.model-details strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.model-details p {
    margin: 0;
    opacity: 0.9;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    background: white;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

select:focus {
    outline: none;
    border-color: #667eea;
}

.translate-btn {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 15px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 20px;
}

.translate-btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.translate-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-spinner {
    display: none;
}

/* Progress section */
.progress-section {
    margin-bottom: 30px;
    text-align: center;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

.progress-text {
    color: #666;
    font-size: 1rem;
}

/* Results section */
.results-section h3 {
    color: #28a745;
    margin-bottom: 25px;
    text-align: center;
    font-size: 1.5rem;
}

.report-card {
    background: #f8f9fa;
    border-radius: 15px;
    margin-bottom: 25px;
    overflow: hidden;
}

.report-header {
    background: #667eea;
    color: white;
    padding: 15px 20px;
    font-weight: 600;
}

.report-content {
    padding: 20px;
}

.report-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #e9ecef;
}

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

.report-label {
    font-weight: 600;
    color: #666;
}

.report-value {
    color: #333;
    font-weight: 500;
}

/* Download section */
.download-section {
    margin-bottom: 25px;
}

.download-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    background: #f8f9fa;
    border-radius: 10px;
    margin-bottom: 10px;
}

.download-info {
    display: flex;
    flex-direction: column;
}

.download-label {
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.download-name {
    color: #666;
    font-size: 0.9rem;
}

.download-btn {
    background: #28a745;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background: #218838;
    transform: translateY(-2px);
}

.new-translation-btn {
    width: 100%;
    background: #6c757d;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 10px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.new-translation-btn:hover {
    background: #5a6268;
}

/* Error section */
.error-card {
    background: #fff5f5;
    border: 2px solid #fed7d7;
    border-radius: 15px;
    overflow: hidden;
}

.error-header {
    background: #ff6b6b;
    color: white;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.error-title {
    font-weight: 600;
    font-size: 1.1rem;
}

.error-message {
    padding: 20px;
    color: #666;
    line-height: 1.6;
}

.retry-btn {
    background: #ff6b6b;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    margin: 0 20px 20px 20px;
    transition: all 0.3s ease;
}

.retry-btn:hover {
    background: #ff5252;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px 0;
    color: white;
    opacity: 0.8;
    margin-top: auto;
}

footer a {
    color: white;
    text-decoration: none;
    font-weight: 600;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    main {
        padding: 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .download-item {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }
    
    .download-btn {
        align-self: center;
    }
}

/* Animation classes */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}