/* ==========================================================================
   animations.css - 动画与动效
   ========================================================================== */

/* === 基础进场动画 === */
.reveal-up,
.reveal-fade,
.reveal-left,
.reveal-right {
    opacity: 0;
    transition: opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1),
                transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
    will-change: transform, opacity;
}
.reveal-up { transform: translateY(40px); }
.reveal-fade { transform: translateY(20px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }

.reveal-up.in,
.reveal-fade.in,
.reveal-left.in,
.reveal-right.in {
    opacity: 1;
    transform: translate(0, 0);
}

/* === 文字字符入场 === */
.char-reveal {
    display: inline-block;
    opacity: 0;
    transform: translateY(20px) rotate(8deg);
    transition: opacity 0.5s, transform 0.5s;
}
.char-reveal.in {
    opacity: 1;
    transform: translateY(0) rotate(0);
}

/* === 数字滚动 === */
.count-up { transition: none; }

/* === 渐变流光 === */
.gradient-flow {
    background: linear-gradient(110deg, var(--accent), var(--accent-2), var(--accent-3), var(--accent));
    background-size: 300% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient-shift 6s linear infinite;
}
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    100% { background-position: 300% 50%; }
}

/* === 霓虹辉光 === */
.neon-glow {
    text-shadow:
        0 0 4px currentColor,
        0 0 11px currentColor,
        0 0 19px currentColor;
}

/* === 边框流光 === */
@keyframes border-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.border-flow {
    position: relative;
    background: var(--bg-card);
    z-index: 0;
}
.border-flow::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: linear-gradient(110deg, var(--accent), var(--accent-2), var(--accent-3), var(--accent));
    background-size: 300% 100%;
    animation: border-flow 4s linear infinite;
    z-index: -1;
}

/* === 浮动动画 === */
.float-y { animation: float-y 4s ease-in-out infinite; }
@keyframes float-y {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* === 摇摆入场 === */
.sway-in {
    animation: sway-in 1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    opacity: 0;
}
@keyframes sway-in {
    0% { opacity: 0; transform: translateY(20px) rotate(-2deg); }
    100% { opacity: 1; transform: translateY(0) rotate(0); }
}

/* === 文字故障 === */
.glitch {
    position: relative;
    display: inline-block;
}
.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: var(--bg-primary);
}
.glitch::before {
    color: var(--accent-2);
    z-index: -1;
    animation: glitch-1 2s infinite linear alternate-reverse;
}
.glitch::after {
    color: var(--accent-3);
    z-index: -2;
    animation: glitch-2 2s infinite linear alternate-reverse;
}
@keyframes glitch-1 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
}
@keyframes glitch-2 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(2px, -2px); }
    40% { transform: translate(2px, 2px); }
    60% { transform: translate(-2px, -2px); }
    80% { transform: translate(-2px, 2px); }
}

/* === 旋转入场 === */
.spin-in {
    animation: spin-in 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) backwards;
}
@keyframes spin-in {
    from { opacity: 0; transform: rotate(-180deg) scale(0.5); }
    to { opacity: 1; transform: rotate(0) scale(1); }
}

/* === 弹跳入场 === */
.bounce-in {
    animation: bounce-in 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}
@keyframes bounce-in {
    0% { opacity: 0; transform: scale(0.3); }
    50% { opacity: 1; transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* === 闪烁 === */
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}
.blink { animation: blink 1.5s ease-in-out infinite; }

/* === 打字机光标 === */
.typing-cursor {
    display: inline-block;
    width: 3px; height: 1em;
    background: var(--accent-2);
    margin-left: 4px;
    vertical-align: text-bottom;
    animation: blink 0.8s steps(1) infinite;
}

/* === 流光扫过 === */
@keyframes shine-sweep {
    0% { transform: translateX(-100%) skewX(-20deg); }
    100% { transform: translateX(200%) skewX(-20deg); }
}
.shine-sweep::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 30%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shine-sweep 3s ease-in-out infinite;
    pointer-events: none;
}

/* === 数字徽章 === */
.badge-pulse {
    position: relative;
}
.badge-pulse::after {
    content: '';
    position: absolute;
    top: 50%; right: -8px;
    width: 6px; height: 6px;
    background: var(--accent-4);
    border-radius: 50%;
    transform: translateY(-50%);
    box-shadow: 0 0 8px var(--accent-4);
    animation: pulse 1.5s ease-in-out infinite;
}

/* === 渐显背景 === */
.fade-bg {
    animation: fade-bg 8s ease-in-out infinite;
}
@keyframes fade-bg {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* === 翻牌 === */
.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;
    inset: 0;
    backface-visibility: hidden;
}
.flip-card-back {
    transform: rotateY(180deg);
}

/* === 文字彩虹滚动 === */
@keyframes rainbow-text {
    0% { color: #7c3aed; }
    16% { color: #00f0ff; }
    33% { color: #4ade80; }
    50% { color: #f59e0b; }
    66% { color: #ef4444; }
    83% { color: #f472b6; }
    100% { color: #7c3aed; }
}
.rainbow-text { animation: rainbow-text 6s linear infinite; }

/* === Hover 浮起 === */
.hover-up { transition: transform 0.3s; }
.hover-up:hover { transform: translateY(-4px); }

/* === 旋转 === */
@keyframes spin-slow {
    from { transform: rotate(0); }
    to { transform: rotate(360deg); }
}
.spin-slow { animation: spin-slow 20s linear infinite; }

/* === 心跳 === */
@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    25% { transform: scale(1.1); }
    50% { transform: scale(1); }
    75% { transform: scale(1.05); }
}
.heartbeat { animation: heartbeat 1.5s ease-in-out infinite; }

/* === 打字机 === */
.typing {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 2px solid var(--accent-2);
    animation: typing 3.5s steps(30) 1s forwards, blink 0.75s step-end infinite;
    width: 0;
}
@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

/* === 视差背景 === */
.parallax-bg {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

/* === 波浪动画 === */
@keyframes wave {
    0%, 100% { transform: translateY(0); }
    25% { transform: translateY(-8px); }
    75% { transform: translateY(8px); }
}
.wave { animation: wave 3s ease-in-out infinite; }