/* 响应式设计 - 桌面端 */
@media (max-width: 1100px) {
    .friends-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 响应式设计 - 平板端 */
@media (max-width: 768px) {
    .friends-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        overflow-y: visible;
    }
    
    .friend-card {
        padding: 15px;
    }
    
    .friend-avatar {
        width: 70px;
        height: 70px;
    }
    
    .friend-name {
        font-size: 16px;
    }
    
    .modal-content {
        width: 92%;
        max-height: 85vh;
        margin: 15px auto;
        border-radius: 12px;
    }

    .friend-link-tip {
        padding: 20px;
        max-width: 90%;
        max-height: 85vh;
    }

    .tip-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .tip-btn {
        width: 100%;
        padding: 12px;
    }
    
    #friendsModalBody {
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 10px;
    }
    
    .friend-description {
        font-size: 12px;
        min-height: 50px;
    }
}

/* 响应式设计 - 移动端 */
@media (max-width: 480px) {
    .friends-container {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .friend-avatar {
        width: 65px;
        height: 65px;
    }
    
    .friend-name {
        font-size: 15px;
    }
    
    .friend-description {
        font-size: 11px;
        min-height: 45px;
        padding: 8px;
    }
    
    .modal-content {
        width: 90%;
        max-height: 80vh;
        margin: 10px auto;
        border-radius: 10px;
    }
    
    .modal-body {
        padding: 15px;
    }
    
    .friend-link-tip {
        max-height: 80vh;
        padding: 15px;
    }
    
    .tip-content {
        max-height: 40vh;
        font-size: 14px;
    }
}

@media (max-width: 767px) {
    .domain-item {
        flex-direction: column;
        gap: 5px;
    }
    
    .domain-name {
        word-break: break-all;
    }
}

/* 移动端触控优化 */
@media (hover: none) and (pointer: coarse) {
    .friend-card:hover {
        transform: none;
    }
    
    .friend-card:active {
        transform: scale(0.98);
    }
    
    .close-btn:active {
        transform: scale(0.9);
    }
    
    .tip-btn:active {
        transform: scale(0.95) !important;
    }
    
    .wallpaper-btn-icon:active,
    .bgcolor-btn-icon:active,
    .lang-btn-icon:active {
        transform: scale(0.9);
    }
}

/* 建站历史样式 */
.history-item {
    background: rgba(248, 249, 250, 0.5);
    padding: 12px 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    border-left: 4px solid #17a2b8;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    transition: all 0.3s ease;
}

.history-item:hover {
    background: rgba(248, 249, 250, 0.7);
    transform: translateX(5px);
}

.history-timeline {
    position: relative;
    padding: 20px 0;
    margin: 30px 0;
}

.history-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #007bff, #17a2b8);
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    padding-left: 50px;
    margin-bottom: 25px;
}

.timeline-year {
    position: absolute;
    left: 0;
    top: 0;
    background: #007bff;
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 14px;
    min-width: 60px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0, 123, 255, 0.3);
    z-index: 1;
}

.timeline-content {
    background: rgba(255, 255, 255, 0.3);
    padding: 15px;
    border-radius: 10px;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.history-note {
    background: linear-gradient(135deg, rgba(255, 243, 205, 0.5), rgba(212, 237, 218, 0.5));
    border-left: 4px solid #ffc107;
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    font-style: italic;
    backdrop-filter: blur(5px);
}

.history-note i {
    margin-right: 10px;
    color: #ffc107;
}

/* 响应式设计 - 平板端 */
@media (max-width: 768px) {
    .history-timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 40px;
    }
    
    .timeline-year {
        font-size: 12px;
        padding: 4px 10px;
        min-width: 50px;
    }
    
    .top-buttons-container {
        top: 10px;
        right: 10px;
        gap: 8px;
    }
    
    .lang-btn-icon, .wallpaper-btn-icon, .bgcolor-btn-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
    
    .wallpaper-switcher,
    .bgcolor-switcher {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .top-buttons-container {
        gap: 6px;
    }
    
    .lang-btn-icon, .wallpaper-btn-icon, .bgcolor-btn-icon {
        width: 34px;
        height: 34px;
        font-size: 15px;
    }
}

@media (max-width: 360px) {
    .top-buttons-container {
        gap: 5px;
    }
    
    .lang-btn-icon, .wallpaper-btn-icon, .bgcolor-btn-icon {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
}