/* Loading遮罩层 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 999999;
    backdrop-filter: blur(5px);
}

/* Loading容器 */
.loading-container {
    text-align: center;
    color: #fff;
}

/* CNCTZ Logo动画 */
.loading-logo {
    font-size: 48px;
    font-weight: bold;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
    background-size: 400% 400%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 3s ease infinite, pulse 2s ease-in-out infinite;
    margin-bottom: 20px;
    letter-spacing: 8px;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
}

/* 渐变色动画 */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 脉冲动画 */
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

/* Loading文字 */
.loading-text {
    font-size: 18px;
    color: #fff;
    margin-bottom: 30px;
    animation: fadeInOut 2s ease-in-out infinite;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* Loading圆圈 */
.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

/* Loading进度条 */
.loading-progress {
    width: 300px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
    margin: 20px auto;
}

.loading-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1);
    background-size: 200% 100%;
    animation: progressMove 2s linear infinite, gradientShift 3s ease infinite;
    width: 0%;
    transition: width 0.3s ease;
}

@keyframes progressMove {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

/* 粒子效果 */
.loading-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: #fff;
    border-radius: 50%;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100px) translateX(50px); opacity: 0; }
}