/* ==================== 简约光线按钮效果 ==================== */

/* 按钮容器 */
.load-more-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    position: relative;
    overflow: visible;
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
    width: 60px;
    height: 60px;
}

/* 按钮悬停效果 */
.load-more-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 25px rgba(0, 212, 255, 0.4);
}

/* 按钮按下效果 */
.load-more-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(0, 212, 255, 0.3);
}

/* 禁用状态 */
.load-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 光线容器 */
.light-rays {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* 光线图标 */
.ray-icon {
    width: 28px;
    height: 28px;
    position: relative;
    z-index: 2;
}

/* 光线SVG样式 */
.ray-icon svg {
    width: 100%;
    height: 100%;
    fill: currentColor;
    transition: transform 0.5s ease;
}

/* 光芒效果 */
.light-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0) 70%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
    z-index: 1;
}

/* 开灯状态 - 光芒显示 */
.load-more-btn.light-on .light-glow {
    opacity: 0.6;
}

/* 开灯状态 - 光芒动画 */
.load-more-btn.light-on .light-glow {
    animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.4;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.7;
    }
}

/* 开灯状态 - 图标旋转 */
.load-more-btn.light-on .ray-icon svg {
    animation: rayRotate 3s linear infinite;
}

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

/* 加载状态 */
.load-more-btn.loading {
    background: linear-gradient(135deg, #666 0%, #444 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.load-more-btn.loading .light-glow {
    animation: glowPulse 0.6s ease-in-out infinite;
}

.load-more-btn.loading .ray-icon svg {
    animation: rayRotate 0.8s linear infinite;
}

/* 加载中指示器 */
.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.load-more-btn.loading .loading-spinner {
    opacity: 1;
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .load-more-btn {
        width: 56px;
        height: 56px;
        padding: 14px;
    }

    .ray-icon {
        width: 26px;
        height: 26px;
    }
}

@media (max-width: 480px) {
    .load-more-btn {
        width: 52px;
        height: 52px;
        padding: 12px;
    }

    .ray-icon {
        width: 24px;
        height: 24px;
    }
}

/* 脉冲效果 - 用于加载状态 */
.load-more-btn.loading {
    animation: buttonPulse 0.6s ease-in-out infinite;
}

@keyframes buttonPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(0.98);
    }
}

/* 光环扩散效果 */
.light-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    opacity: 0;
    pointer-events: none;
}

.load-more-btn.light-on .light-ring {
    animation: ringExpand 1.5s ease-out infinite;
}

@keyframes ringExpand {
    0% {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 0.6;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}