/* 邀请分享弹窗样式 */
.invitation-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 10000;
    backdrop-filter: blur(4px);
}

.invitation-modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

.invitation-modal-content {
    background: white;
    border-radius: 16px;
    padding: 30px;
    width: 90%;
    max-width: 450px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.8);
    transition: transform 0.3s ease-out;
}

.invitation-modal.show .invitation-modal-content {
    transform: scale(1);
}

.invitation-modal-header {
    text-align: center;
    margin-bottom: 25px;
}

.invitation-modal-header h3 {
    color: #d4af37;
    font-size: 24px;
    margin: 0 0 10px 0;
    font-weight: 600;
}

.invitation-modal-header .subtitle {
    color: #666;
    font-size: 14px;
    margin: 0;
}

.invitation-stats {
    background: linear-gradient(135deg, #f8f6f0 0%, #f5f2e8 100%);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 25px;
    text-align: center;
}

.invitation-stats-row {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.invitation-stat {
    text-align: center;
}

.invitation-stat-number {
    font-size: 28px;
    font-weight: bold;
    color: #d4af37;
    margin-bottom: 5px;
}

.invitation-stat-label {
    font-size: 12px;
    color: #8b7355;
    margin: 0;
}

.invitation-progress {
    margin: 20px 0;
}

.invitation-progress-bar {
    background: #e0e0e0;
    border-radius: 10px;
    height: 8px;
    overflow: hidden;
    margin-bottom: 8px;
}

.invitation-progress-fill {
    background: linear-gradient(90deg, #d4af37, #f4d03f);
    height: 100%;
    border-radius: 10px;
    transition: width 0.5s ease;
}

.invitation-progress-text {
    font-size: 14px;
    color: #666;
    text-align: center;
}

.invitation-requirement {
    background: #fff3e0;
    border-left: 4px solid #ff9800;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 25px;
}

.invitation-requirement-title {
    color: #e65100;
    font-weight: 600;
    font-size: 16px;
    margin: 0 0 8px 0;
}

.invitation-requirement-text {
    color: #ef6c00;
    font-size: 14px;
    margin: 0;
    line-height: 1.5;
}

.invitation-share-section {
    margin-bottom: 20px;
}

.invitation-share-title {
    color: #333;
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 15px 0;
    text-align: center;
}

.invitation-link-container {
    background: #f8f9fa;
    border: 2px dashed #d4af37;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 15px;
    position: relative;
}

.invitation-link {
    font-family: 'Courier New', monospace;
    font-size: 13px;
    color: #666;
    word-break: break-all;
    line-height: 1.4;
    background: white;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
}

.invitation-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.invitation-btn {
    flex: 1;
    padding: 12px 16px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
    display: inline-block;
}

.invitation-btn-copy {
    background: linear-gradient(135deg, #2196f3, #03a9f4);
    color: white;
}

.invitation-btn-copy:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.invitation-btn-share {
    background: linear-gradient(135deg, #4caf50, #66bb6a);
    color: white;
}

.invitation-btn-share:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.invitation-qr-section {
    text-align: center;
    margin-bottom: 20px;
}

.invitation-qr-title {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
}

.invitation-qr-code {
    background: white;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #e0e0e0;
    display: inline-block;
    margin-bottom: 10px;
}

.invitation-qr-hint {
    color: #999;
    font-size: 12px;
    line-height: 1.4;
}

.invitation-modal-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}

.invitation-btn-close {
    background: #6c757d;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.invitation-btn-close:hover {
    background: #5a6268;
    transform: translateY(-1px);
}

.invitation-tips {
    background: #e8f5e8;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.invitation-tips-title {
    color: #2e7d32;
    font-weight: 600;
    font-size: 14px;
    margin: 0 0 8px 0;
}

.invitation-tips-list {
    margin: 0;
    padding-left: 20px;
    color: #388e3c;
    font-size: 13px;
    line-height: 1.6;
}

.invitation-tips-list li {
    margin-bottom: 4px;
}

.copy-success {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #4caf50;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    z-index: 10001;
    animation: copySuccessAnimation 2s ease-out forwards;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .invitation-modal-content {
        padding: 20px;
        margin: 10px;
        width: calc(100% - 20px);
    }
    
    .invitation-modal-header h3 {
        font-size: 20px;
    }
    
    .invitation-stat-number {
        font-size: 24px;
    }
    
    .invitation-buttons {
        flex-direction: column;
    }
    
    .invitation-link {
        font-size: 12px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes copySuccessAnimation {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }
    20% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    80% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }
}