/* ==========================================================================
   铭赞网络 · 动画样式表
   ========================================================================== */

/* 关键帧定义 */
@keyframes navSlideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes gridShift {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 60px 60px;
    }
}

@keyframes floatA {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.05); }
    66% { transform: translate(-30px, 40px) scale(0.95); }
}

@keyframes floatB {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-40px, 30px) scale(1.08); }
    66% { transform: translate(30px, -40px) scale(0.92); }
}

@keyframes floatC {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-30%, -70%) scale(1.1); }
}

@keyframes cardFloat {
    0%, 100% { transform: perspective(1000px) rotateY(-5deg) rotateX(2deg) translateY(0); }
    50% { transform: perspective(1000px) rotateY(-5deg) rotateX(2deg) translateY(-10px); }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(254, 44, 85, 0.6);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.2);
        box-shadow: 0 0 0 8px rgba(254, 44, 85, 0);
    }
}

@keyframes scrollLine {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(200%); }
}

@keyframes faqFade {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes revealUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes revealLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes revealRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes revealScale {
    from {
        opacity: 0;
        transform: scale(0.92);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes barRise {
    from {
        height: 0;
    }
    to {
        height: var(--h);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(254, 44, 85, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(254, 44, 85, 0.6);
    }
}

/* Reveal 触发动画：默认隐藏状态 */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
    will-change: opacity, transform;
}

[data-reveal].is-revealed {
    opacity: 1;
    transform: translateY(0);
}

/* 错开延迟 */
[data-reveal]:nth-child(1) { transition-delay: 0.05s; }
[data-reveal]:nth-child(2) { transition-delay: 0.10s; }
[data-reveal]:nth-child(3) { transition-delay: 0.15s; }
[data-reveal]:nth-child(4) { transition-delay: 0.20s; }
[data-reveal]:nth-child(5) { transition-delay: 0.25s; }
[data-reveal]:nth-child(6) { transition-delay: 0.30s; }

/* 数字滚动动画 */
.num {
    display: inline-block;
    font-variant-numeric: tabular-nums;
}

/* 加载状态动画 */
.bar-item span {
    animation: barRise 1s var(--ease-out) forwards;
    animation-delay: 0.5s;
}

.bar-item:nth-child(1) span { animation-delay: 0.5s; }
.bar-item:nth-child(2) span { animation-delay: 0.6s; }
.bar-item:nth-child(3) span { animation-delay: 0.7s; }
.bar-item:nth-child(4) span { animation-delay: 0.8s; }
.bar-item:nth-child(5) span { animation-delay: 0.9s; }

.bar-item span {
    height: 0;
}

/* 标题渐入 */
.title-line {
    display: inline-block;
    overflow: hidden;
}

/* 滚动条动画优化 */
.section {
    contain: layout style;
}

/* 导航菜单滑入 */
@media (prefers-reduced-motion: no-preference) {
    .nav-menu li {
        animation: revealUp 0.6s var(--ease-out) backwards;
    }

    .nav-menu li:nth-child(1) { animation-delay: 0.05s; }
    .nav-menu li:nth-child(2) { animation-delay: 0.10s; }
    .nav-menu li:nth-child(3) { animation-delay: 0.15s; }
    .nav-menu li:nth-child(4) { animation-delay: 0.20s; }
    .nav-menu li:nth-child(5) { animation-delay: 0.25s; }
    .nav-menu li:nth-child(6) { animation-delay: 0.30s; }
    .nav-menu li:nth-child(7) { animation-delay: 0.35s; }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    [data-reveal] {
        opacity: 1;
        transform: none;
    }
}