/* 作品集页面增强动画 */

/* ========== 滚动显示动画 ========== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-up.delay-100 { transition-delay: 0.1s; }
.fade-in-up.delay-200 { transition-delay: 0.2s; }
.fade-in-up.delay-300 { transition-delay: 0.3s; }
.fade-in-up.delay-400 { transition-delay: 0.4s; }

/* 从左侧进入 */
.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* 从右侧进入 */
.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* 缩放进入 */
.fade-in-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.fade-in-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* ========== 卡片交错动画 ========== */
.stagger-item {
    opacity: 0;
    transform: translateY(40px) rotate(var(--rotation, 0deg));
    transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.stagger-item.visible {
    opacity: 1;
    transform: translateY(0) rotate(var(--rotation, 0deg));
}

/* ========== 鼠标跟随效果 ========== */
.mouse-follow {
    transition: transform 0.1s ease-out;
}

/* ========== 磁吸按钮效果 ========== */
.magnetic-btn {
    position: relative;
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.magnetic-btn:hover {
    transform: scale(1.05);
}

/* ========== 卡片3D倾斜效果 ========== */
.card-3d {
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform 0.3s ease;
}

.card-3d:hover {
    transform: rotateX(var(--rotateX, 0deg)) rotateY(var(--rotateY, 0deg));
}

/* ========== 文字填充动画 ========== */
.text-fill-animation {
    background: linear-gradient(90deg, var(--purple) 50%, var(--black) 50%);
    background-size: 200% 100%;
    background-position: 100% 0;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: background-position 0.5s ease;
}

.text-fill-animation:hover {
    background-position: 0 0;
}

/* ========== 下划线扩展动画 ========== */
.underline-expand {
    position: relative;
}

.underline-expand::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 4px;
    background: var(--orange);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform: translateX(-50%);
}

.underline-expand:hover::after {
    width: 100%;
}

/* ========== 脉冲光晕 ========== */
.pulse-glow {
    animation: pulseGlow 2s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.4);
    }
    50% {
        box-shadow: 0 0 20px 10px rgba(139, 92, 246, 0);
    }
}

/* ========== 摇摆动画 ========== */
.wiggle-hover:hover {
    animation: wiggle 0.5s ease-in-out;
}

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-5deg); }
    75% { transform: rotate(5deg); }
}

/* ========== 弹跳动画 ========== */
.bounce-hover:hover {
    animation: bounce 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ========== 抖动动画 ========== */
.shake-hover:hover {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-5px); }
    40% { transform: translateX(5px); }
    60% { transform: translateX(-5px); }
    80% { transform: translateX(5px); }
}

/* ========== 旋转进入 ========== */
.rotate-in {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.rotate-in.visible {
    opacity: 1;
    transform: rotate(0) scale(1);
}

/* ========== 翻牌效果 ========== */
.flip-card {
    perspective: 1000px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.flip-card-back {
    transform: rotateY(180deg);
}

/* ========== 漂浮动画变体 ========== */
.float-gentle {
    animation: floatGentle 4s ease-in-out infinite;
}

@keyframes floatGentle {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(2deg); }
}

.float-delay-1 { animation-delay: 0.5s; }
.float-delay-2 { animation-delay: 1s; }
.float-delay-3 { animation-delay: 1.5s; }

/* ========== 呼吸动画 ========== */
.breathe {
    animation: breathe 3s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

/* ========== 闪烁动画 ========== */
.twinkle {
    animation: twinkle 2s ease-in-out infinite;
}

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

/* ========== 摇摆不定动画 ========== */
.wobble {
    animation: wobble 2s ease-in-out infinite;
}

@keyframes wobble {
    0%, 100% { transform: translateX(0) rotate(0deg); }
    15% { transform: translateX(-5px) rotate(-5deg); }
    30% { transform: translateX(4px) rotate(3deg); }
    45% { transform: translateX(-3px) rotate(-3deg); }
    60% { transform: translateX(2px) rotate(2deg); }
    75% { transform: translateX(-1px) rotate(-1deg); }
}

/* ========== 果冻效果 ========== */
.jelly:hover {
    animation: jelly 0.5s ease;
}

@keyframes jelly {
    0%, 100% { transform: scale(1, 1); }
    25% { transform: scale(0.9, 1.1); }
    50% { transform: scale(1.1, 0.9); }
    75% { transform: scale(0.95, 1.05); }
}

/* ========== 心跳动画 ========== */
.heartbeat {
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    14% { transform: scale(1.1); }
    28% { transform: scale(1); }
    42% { transform: scale(1.1); }
    70% { transform: scale(1); }
}

/* ========== 滑入动画变体 ========== */
.slide-in-bottom {
    animation: slideInBottom 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes slideInBottom {
    0% {
        opacity: 0;
        transform: translateY(60px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-left {
    animation: slideInLeft 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes slideInLeft {
    0% {
        opacity: 0;
        transform: translateX(-60px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes slideInRight {
    0% {
        opacity: 0;
        transform: translateX(60px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ========== 弹性弹出 ========== */
.pop-in {
    animation: popIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes popIn {
    0% {
        opacity: 0;
        transform: scale(0) rotate(-45deg);
    }
    70% {
        transform: scale(1.1) rotate(5deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

/* ========== 液体按钮效果 ========== */
.liquid-btn {
    position: relative;
    overflow: hidden;
}

.liquid-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.liquid-btn:hover::before {
    width: 300px;
    height: 300px;
}

/* ========== 霓虹发光 ========== */
.neon-glow {
    animation: neonGlow 1.5s ease-in-out infinite alternate;
}

@keyframes neonGlow {
    0% {
        box-shadow: 0 0 5px var(--purple),
                    0 0 10px var(--purple),
                    0 0 15px var(--purple);
    }
    100% {
        box-shadow: 0 0 10px var(--purple),
                    0 0 20px var(--purple),
                    0 0 30px var(--purple);
    }
}

/* ========== 渐变边框动画 ========== */
.gradient-border {
    position: relative;
    background: var(--white);
    border-radius: 24px;
}

.gradient-border::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    background: linear-gradient(45deg, var(--purple), var(--orange), var(--yellow), var(--pink), var(--cyan));
    background-size: 400% 400%;
    border-radius: 28px;
    z-index: -1;
    animation: gradientBorder 3s ease infinite;
}

@keyframes gradientBorder {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ========== 打字机效果 ========== */
.typewriter {
    overflow: hidden;
    white-space: nowrap;
    border-right: 3px solid var(--purple);
    animation: typing 3s steps(40, end), blink 0.75s step-end infinite;
}

@keyframes typing {
    0% { width: 0; }
    100% { width: 100%; }
}

@keyframes blink {
    0%, 100% { border-color: transparent; }
    50% { border-color: var(--purple); }
}

/* ========== 彩虹文字 ========== */
.rainbow-text {
    background: linear-gradient(90deg,
        var(--purple),
        var(--pink),
        var(--orange),
        var(--yellow),
        var(--lime),
        var(--cyan),
        var(--purple)
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: rainbow 3s linear infinite;
}

@keyframes rainbow {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* ========== 模糊进入 ========== */
.blur-in {
    opacity: 0;
    filter: blur(10px);
    transition: opacity 0.6s ease, filter 0.6s ease;
}

.blur-in.visible {
    opacity: 1;
    filter: blur(0);
}

/* ========== 3D翻转进入 ========== */
.flip-in-x {
    opacity: 0;
    transform: perspective(400px) rotateX(90deg);
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.flip-in-x.visible {
    opacity: 1;
    transform: perspective(400px) rotateX(0);
}

.flip-in-y {
    opacity: 0;
    transform: perspective(400px) rotateY(90deg);
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.flip-in-y.visible {
    opacity: 1;
    transform: perspective(400px) rotateY(0);
}

/* ========== 视差滚动基础 ========== */
.parallax {
    will-change: transform;
}

/* ========== 平滑滚动 ========== */
html {
    scroll-behavior: smooth;
}

/* ========== 自定义滚动条 ========== */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--cream);
}

::-webkit-scrollbar-thumb {
    background: var(--purple);
    border: 3px solid var(--cream);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--purple-dark);
}