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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 400px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
}

header h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

header .subtitle {
    font-size: 14px;
    opacity: 0.9;
}

.upload-section {
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.upload-box {
    border: 2px dashed #ddd;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.upload-box:hover {
    border-color: #667eea;
    background: #f8f9ff;
}

.upload-box input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.upload-box p {
    color: #666;
    font-size: 14px;
}

.preview-box {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
}

.preview-box img {
    width: 100%;
    display: block;
    border-radius: 12px;
}

.btn-retake {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    cursor: pointer;
}

.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 16px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    flex: 1;
    background: #f0f0f0;
    color: #333;
    border: none;
    padding: 14px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.loading-section {
    background: white;
    border-radius: 16px;
    padding: 60px 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f0f0f0;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.loading-section p {
    color: #666;
    font-size: 14px;
}

.result-section {
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.result-section h2 {
    font-size: 18px;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.card-info {
    margin-bottom: 20px;
}

.info-item {
    margin-bottom: 16px;
}

.info-item label {
    display: block;
    font-size: 12px;
    color: #999;
    margin-bottom: 6px;
}

.info-item input {
    width: 100%;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    color: #333;
    transition: border-color 0.2s;
}

.info-item input:focus {
    outline: none;
    border-color: #667eea;
}

.action-buttons {
    display: flex;
    gap: 12px;
}

.action-buttons .btn-primary {
    flex: 1;
    margin-top: 0;
}