:root {
    --primary-color: #1890ff;
    --secondary-color: #40a9ff;
    --background-color: #f0f2f5;
    --text-color: #333;
    --border-color: #ddd;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    padding: 40px;
    width: 100%;
    max-width: 480px;
    text-align: center;
    transition: transform 0.3s ease;
}

.container:hover {
    transform: translateY(-5px);
}

.image-container {
    margin-bottom: 30px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.image-container img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.loading-indicator {
    display: none;
    margin-top: 15px;
    font-size: 16px;
    color: #666;
    text-align: center;
}

.image-container:hover img {
    transform: scale(1.05);
}

h1 {
    color: var(--text-color);
    font-size: 28px;
    margin-bottom: 30px;
    font-weight: 600;
}

.form-field {
    margin-bottom: 25px;
    text-align: left;
}

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

select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.file-input-wrapper {
    position: relative;
    overflow: visible;
    display: inline-block;
    width: 100%;
}

.file-input-button {
    background-color: #f0f0f0;
    border: 2px solid var(--border-color);
    color: var(--text-color);
    padding: 12px 15px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    display: inline-block;
    width: 100%;
    text-align: center;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

.file-input-button:hover {
    background-color: #e0e0e0;
    border-color: var(--primary-color);
}

.file-input-button input[type="file"] {
    display: none;
}

#file-name {
    margin-top: 8px;
    font-size: 14px;
    color: #666;
}

button[type="submit"], button[id="verify-submit-button"] {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 20px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.3s ease, transform 0.3s ease;
    margin-top: 25px;
    font-weight: 500;
}

button[type="submit"]:hover, button[id="verify-submit-button"]:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

button[type="submit"]:disabled, button[id="verify-submit-button"]:disabled {
    background-color: #d3d3d3;
    cursor: not-allowed;
}

.progress-container {
    margin-top: 25px;
    display: none;
}

.progress {
    height: 12px;
    background-color: #f0f0f0;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    height: 100%;
    background-color: var(--primary-color);
    width: 0;
    transition: width 0.3s ease;
}

#progress-percentage {
    font-size: 14px;
    color: #666;
    margin-top: 8px;
    font-weight: 500;
}

#status {
    margin-top: 20px;
    font-size: 16px;
    color: #666;
    font-weight: 500;
}

.upload-stats {
    margin-top: 15px;
    font-size: 14px;
    color: #666;
    display: flex;
    justify-content: space-between;
}

.upload-stats span {
    display: inline-block;
}

.button-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.action-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.action-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.verification-container {
    margin-top: 25px;
}

.verification-input {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 16px;
    text-align: center;
    margin-bottom: 15px;
    transition: border-color 0.3s ease;
}

.verification-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.download-link-button, .preview-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    width: 100%;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 14px;
    color: white;
    background-size: 200% 200%;
    animation: rainbow 5s ease infinite;
}

.download-link-button {
    background-image: linear-gradient(45deg, #ff9a9e, #fad0c4, #ffecd2, #fcb69f);
}

.preview-button {
    background-image: linear-gradient(45deg, #a1c4fd, #c2e9fb, #d4fc79, #96e6a1);
}

.download-link-button:hover, .preview-button:hover {
    background-size: 100% 100%;
}

.logout-button:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.logout-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 20px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.3s ease, transform 0.3s ease;
    margin-bottom: 25px; /* 适当的间距以与表单分隔开 */
    font-weight: 500;
}

.button-icon {
    font-size: 24px;
    margin-bottom: 10px;
}

@keyframes rainbow {
    0% { background-position: 0% 50% }
    50% { background-position: 100% 50% }
    100% { background-position: 0% 50% }
}

@media (max-width: 600px) {
    .container {
        padding: 30px;
        max-width: 90%;
    }
}

@media (max-width: 480px) {
    .button-group {
        grid-template-columns: 1fr;
    }
}