/**
 * premium-effects.css
 * Advanced visual effects for high-end brand experience.
 */

/* ===== 1. 视差滚动基础 ===== */
.parallax-container {
    perspective: 1000px;
    overflow-x: hidden;
}

.parallax-layer {
    will-change: transform;
    transition: transform 0.1s linear;
}

/* ===== 2. 流光边框 (Streaming Border) ===== */
.premium-border {
    position: relative;
    z-index: 1;
}

.premium-border::after {
    content: "";
    position: absolute;
    inset: -2px;
    background: linear-gradient(45deg,
            transparent,
            transparent,
            var(--vista-glass-teal),
            var(--vista-glass-blue),
            transparent,
            transparent);
    background-size: 200% 200%;
    z-index: -1;
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.5s ease;
    animation: streamBorder 8s linear infinite;
    /* Slowed down for efficiency */
}

.premium-border:hover::after {
    opacity: 1;
}

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

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* ===== 3. 呼吸光辉 (Pulsing Glow) ===== */
.pulsing-glow {
    position: relative;
}

.pulsing-glow::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--glass-primary);
    /* filter: blur(20px); - Removed for GPU efficiency */
    box-shadow: 0 0 30px 10px var(--glass-primary);
    border-radius: inherit;
    z-index: -1;
    opacity: 0.2;
    /* Lowered opacity for cleaner glow */
    animation: pulseGlow 6s ease-in-out infinite;
    /* Slowed down */
}

@keyframes pulseGlow {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.3;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.6;
    }
}

/* ===== 4. 磨砂玻璃增强 (Premium Frosted) ===== */
.frosted-glass-premium {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* ===== 5. 元素错开入场 (Staggered Entrance) ===== */
.stagger-group>* {
    opacity: 0;
    transform: translateY(20px);
}

.stagger-group.revealed>* {
    animation: staggerFadeIn 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

@keyframes staggerFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stagger-group>*:nth-child(1) {
    animation-delay: 0.1s;
}

.stagger-group>*:nth-child(2) {
    animation-delay: 0.2s;
}

.stagger-group>*:nth-child(3) {
    animation-delay: 0.3s;
}

.stagger-group>*:nth-child(4) {
    animation-delay: 0.4s;
}

.stagger-group>*:nth-child(5) {
    animation-delay: 0.5s;
}

.stagger-group>*:nth-child(6) {
    animation-delay: 0.6s;
}