/* CSS变量已在main.css中定义，这里不再重复 */

/* 反馈页面专用样式 */
.feedback-page-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 40px;
}

.feedback-page-header {
    text-align: center;
    margin-bottom: 50px;
}

.feedback-page-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feedback-page-logo-icon {
    font-size: 3rem;
    margin-right: 20px;
    color: var(--primary-color);
}

.feedback-page-logo-text h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin: 0;
}

.feedback-page-logo-text p {
    color: var(--secondary-text);
    margin: 8px 0 0 0;
    font-size: 1.2rem;
}

.feedback-page-content {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
    padding: 50px;
}

.feedback-page-title {
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-color);
    font-size: 2.2rem;
    position: relative;
}

.feedback-page-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 3px;
}

.feedback-page-description {
    text-align: center;
    color: var(--secondary-text);
    margin-bottom: 50px;
    line-height: 1.7;
    font-size: 1.1rem;
}

.back-to-main-btn {
    display: inline-flex;
    align-items: center;
    padding: 16px 32px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 500;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    margin-bottom: 40px;
}

.back-to-main-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.back-to-main-btn i {
    margin-right: 8px;
}

.feedback-form {
    display: grid;
    gap: 32px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 12px;
    font-size: 1.05rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
    font-family: inherit;
}

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

.submit-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    padding: 20px 40px;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(99, 102, 241, 0.4);
}

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

.submit-btn.loading {
    pointer-events: none;
    opacity: 0.8;
}

.submit-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 按钮文本和加载状态样式 */
.button-text,
.button-loading {
    display: inline-block;
    transition: all 0.3s ease;
}

.button-loading {
    display: none;
}

.submit-btn.loading .button-text {
    opacity: 0;
}

.submit-btn.loading .button-loading {
    display: inline-block;
    opacity: 1;
}

.feedback-footer {
    text-align: center;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--secondary-text);
}

.contact-email {
    margin-top: 15px;
    font-size: 1.05rem;
}

.contact-email a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-email a:hover {
    text-decoration: underline;
}

.license-info {
    background: var(--light-bg);
    padding: 20px 24px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
    text-align: center;
    color: var(--secondary-text);
    font-size: 1rem;
}

.license-info strong {
    color: var(--primary-color);
    font-family: monospace;
}

.license-status {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.license-key {
    color: var(--secondary-text);
    font-size: 1rem;
}

#licenseDisplay {
    font-family: monospace;
    background: rgba(0,0,0,0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

/* 主题相关样式已在main.css中统一定义 */