/*
 * Memphis 风格全屏 Loading 效果
 * 充满活力的80年代孟菲斯设计动画
 */

/* 全屏遮罩层 */
#memphisLoadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85);
    z-index: 9999;
    display: none;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

#memphisLoadingOverlay.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Loading 主容器 */
.memphis-loading-container {
    position: relative;
    width: 400px;
    max-width: 90vw;
    padding: 3rem;
    background: var(--memphis-white, #FFFFFF);
    border: 6px solid var(--memphis-black, #000000);
    box-shadow:
        15px 15px 0 var(--memphis-pink, #FF6EC7),
        30px 30px 0 var(--memphis-cyan, #2BD8E8);
    text-align: center;
    animation: slideInUp 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px) rotate(-5deg) scale(0.8);
    }
    to {
        opacity: 1;
        transform: translateY(0) rotate(0deg) scale(1);
    }
}

/* 装饰圆点 */
.memphis-loading-container::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 40px;
    height: 40px;
    background: var(--memphis-yellow, #FFE44D);
    border: 5px solid var(--memphis-black, #000000);
    border-radius: 50%;
    animation: memphis-pulse-dot 1s ease-in-out infinite;
}

.memphis-loading-container::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 50px;
    height: 50px;
    background: var(--memphis-purple, #9B6BFF);
    border: 5px solid var(--memphis-black, #000000);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    animation: memphis-rotate-triangle 3s linear infinite;
}

@keyframes memphis-pulse-dot {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.3);
    }
}

@keyframes memphis-rotate-triangle {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Loading 动画区域 */
.memphis-loading-animation {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto 2rem;
}

/* 旋转的几何图形组 */
.memphis-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    transform: translate(-50%, -50%);
    animation: memphis-spin 3s linear infinite;
}

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

/* 几何图形 - 圆形 */
.memphis-circle-loader {
    position: absolute;
    width: 60px;
    height: 60px;
    border: 6px solid var(--memphis-pink, #FF6EC7);
    border-radius: 50%;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    animation: memphis-bounce-circle 1s ease-in-out infinite;
}

@keyframes memphis-bounce-circle {
    0%, 100% {
        transform: translateX(-50%) translateY(0) scale(1);
    }
    50% {
        transform: translateX(-50%) translateY(-10px) scale(1.1);
    }
}

/* 几何图形 - 三角形 */
.memphis-triangle-loader {
    position: absolute;
    width: 0;
    height: 0;
    border-left: 35px solid transparent;
    border-right: 35px solid transparent;
    border-bottom: 60px solid var(--memphis-cyan, #2BD8E8);
    top: 50%;
    right: -30px;
    transform: translateY(-50%);
    animation: memphis-bounce-triangle 1.2s ease-in-out infinite;
}

@keyframes memphis-bounce-triangle {
    0%, 100% {
        transform: translateY(-50%) scale(1);
        opacity: 1;
    }
    50% {
        transform: translateY(-50%) scale(0.8);
        opacity: 0.7;
    }
}

/* 几何图形 - 方形 */
.memphis-square-loader {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--memphis-yellow, #FFE44D);
    border: 6px solid var(--memphis-black, #000000);
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    animation: memphis-rotate-square 2s ease-in-out infinite;
}

@keyframes memphis-rotate-square {
    0%, 100% {
        transform: translateX(-50%) rotate(0deg);
    }
    50% {
        transform: translateX(-50%) rotate(180deg) scale(1.1);
    }
}

/* 几何图形 - 锯齿纹 */
.memphis-zigzag-loader {
    position: absolute;
    width: 40px;
    height: 80px;
    background: repeating-linear-gradient(
        45deg,
        var(--memphis-purple, #9B6BFF),
        var(--memphis-purple, #9B6BFF) 10px,
        transparent 10px,
        transparent 20px
    );
    top: 50%;
    left: -20px;
    transform: translateY(-50%);
    animation: memphis-wave-zigzag 1.5s ease-in-out infinite;
}

@keyframes memphis-wave-zigzag {
    0%, 100% {
        transform: translateY(-50%) translateX(0);
    }
    50% {
        transform: translateY(-50%) translateX(10px);
    }
}

/* 中心装饰 */
.memphis-center-decoration {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--memphis-white, #FFFFFF);
    border: 6px solid var(--memphis-black, #000000);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    animation: memphis-pulse-center 1s ease-in-out infinite;
    z-index: 10;
}

@keyframes memphis-pulse-center {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        box-shadow: 0 0 0 var(--memphis-pink, #FF6EC7);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        box-shadow: 0 0 20px var(--memphis-pink, #FF6EC7);
    }
}

/* Loading 文字 */
.memphis-loading-text {
    font-family: 'Poppins', 'Nunito', 'Montserrat', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--memphis-black, #000000);
    text-shadow:
        3px 3px 0 var(--memphis-pink, #FF6EC7),
        6px 6px 0 var(--memphis-cyan, #2BD8E8);
    margin-bottom: 1rem;
    animation: memphis-text-bounce 1s ease-in-out infinite;
}

@keyframes memphis-text-bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

/* Loading 子文字 */
.memphis-loading-subtext {
    font-family: 'Poppins', 'Nunito', 'Montserrat', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--memphis-black, #000000);
    opacity: 0.7;
    margin-top: 0.5rem;
}

/* 动态点动画 */
.memphis-loading-dots {
    display: inline-block;
}

.memphis-loading-dots span {
    animation: memphis-dot-blink 1.4s infinite;
    font-weight: 900;
}

.memphis-loading-dots span:nth-child(1) {
    animation-delay: 0s;
}

.memphis-loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.memphis-loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes memphis-dot-blink {
    0%, 20%, 100% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* 进度条（可选） */
.memphis-loading-progress {
    width: 100%;
    height: 20px;
    background: var(--memphis-white, #FFFFFF);
    border: 4px solid var(--memphis-black, #000000);
    margin-top: 1.5rem;
    overflow: hidden;
    position: relative;
}

.memphis-loading-progress-bar {
    height: 100%;
    background: repeating-linear-gradient(
        45deg,
        var(--memphis-pink, #FF6EC7),
        var(--memphis-pink, #FF6EC7) 10px,
        var(--memphis-purple, #9B6BFF) 10px,
        var(--memphis-purple, #9B6BFF) 20px
    );
    width: 0%;
    transition: width 0.3s ease;
    animation: memphis-progress-slide 2s linear infinite;
}

@keyframes memphis-progress-slide {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 40px 0;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .memphis-loading-container {
        width: 350px;
        padding: 2rem;
        box-shadow:
            10px 10px 0 var(--memphis-pink, #FF6EC7),
            20px 20px 0 var(--memphis-cyan, #2BD8E8);
    }

    .memphis-loading-animation {
        width: 150px;
        height: 150px;
    }

    .memphis-circle-loader {
        width: 45px;
        height: 45px;
    }

    .memphis-triangle-loader {
        border-left: 25px solid transparent;
        border-right: 25px solid transparent;
        border-bottom: 45px solid var(--memphis-cyan, #2BD8E8);
    }

    .memphis-square-loader {
        width: 45px;
        height: 45px;
    }

    .memphis-center-decoration {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .memphis-loading-text {
        font-size: 1.3rem;
        text-shadow:
            2px 2px 0 var(--memphis-pink, #FF6EC7),
            4px 4px 0 var(--memphis-cyan, #2BD8E8);
    }
}

@media (max-width: 576px) {
    .memphis-loading-container {
        width: 300px;
        padding: 1.5rem;
        box-shadow:
            8px 8px 0 var(--memphis-pink, #FF6EC7),
            15px 15px 0 var(--memphis-cyan, #2BD8E8);
    }

    .memphis-loading-animation {
        width: 120px;
        height: 120px;
        margin: 0 auto 1rem;
    }

    .memphis-loading-text {
        font-size: 1.1rem;
    }

    .memphis-loading-subtext {
        font-size: 0.85rem;
    }
}