/* ═══════════════════════════════════════════
   ChenXuan Robotics - Animations & Effects
   ═══════════════════════════════════════════ */

/* ── Keyframe Animations ── */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}
@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}
@keyframes rotateIn {
    from { opacity: 0; transform: rotate(-10deg) scale(0.95); }
    to { opacity: 1; transform: rotate(0) scale(1); }
}
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}
@keyframes borderGlow {
    0%, 100% { border-color: rgba(216, 12, 30, 0.2); box-shadow: 0 0 10px rgba(216, 12, 30, 0.1); }
    50% { border-color: rgba(216, 12, 30, 0.5); box-shadow: 0 0 25px rgba(216, 12, 30, 0.2); }
}
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes ripple {
    0% { transform: scale(1); opacity: 0.4; }
    100% { transform: scale(2.5); opacity: 0; }
}

/* ── Hero Animations ── */
.hero-title-line {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}
.hero-title-line:nth-child(1) { animation-delay: 0.3s; }
.hero-title-line:nth-child(2) { animation-delay: 0.5s; }
.hero-title-line:nth-child(3) { animation-delay: 0.7s; }

.hero-title-highlight {
    animation: fadeInUp 0.8s ease 0.5s forwards;
}

/* ── Particle Effect (CSS-only fallback) ── */
.hero-particles::before,
.hero-particles::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    opacity: 0.03;
}
.hero-particles::before {
    top: 20%;
    right: 10%;
    background: var(--color-primary);
    animation: float 8s ease-in-out infinite;
}
.hero-particles::after {
    bottom: 20%;
    left: 5%;
    background: var(--color-secondary);
    animation: float 10s ease-in-out infinite 2s;
}


/* ── Card Hover Effects ── */
.product-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
    background: linear-gradient(135deg, rgba(216,12,30,0.03), transparent 60%);
    pointer-events: none;
}
.product-card:hover::after {
    opacity: 1;
}

/* ── Solution Card Shine Effect ── */
.solution-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 40%,
        rgba(255,255,255,0.03) 45%,
        rgba(255,255,255,0.05) 50%,
        rgba(255,255,255,0.03) 55%,
        transparent 60%
    );
    transform: translateX(-100%);
    transition: transform 0.8s ease;
    z-index: 1;
}
.solution-card:hover::after {
    transform: translateX(30%);
}

/* ── Service Card Glow ── */
.service-card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-base);
}
.service-card:hover::after {
    opacity: 0.3;
}

/* ── News List Item Arrow Animation ── */
.news-list-item .news-list-arrow svg {
    transition: transform var(--transition-fast);
}
.news-list-item:hover .news-list-arrow svg {
    transform: translateX(4px);
}

/* ── Button Ripple Effect ── */
.btn-primary {
    position: relative;
    overflow: hidden;
}
.btn-primary::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}
.btn-primary:active::after {
    width: 300px;
    height: 300px;
}

/* ── Mega Menu Slide Animations ── */
.mega-menu-panel .mega-col {
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}
.menu-item.has-mega-menu:hover .mega-menu-panel .mega-col {
    opacity: 1;
    transform: translateY(0);
}
.menu-item.has-mega-menu:hover .mega-menu-panel .mega-col:nth-child(1) { transition-delay: 0.05s; }
.menu-item.has-mega-menu:hover .mega-menu-panel .mega-col:nth-child(2) { transition-delay: 0.1s; }
.menu-item.has-mega-menu:hover .mega-menu-panel .mega-col:nth-child(3) { transition-delay: 0.15s; }
.menu-item.has-mega-menu:hover .mega-menu-panel .mega-col:nth-child(4) { transition-delay: 0.2s; }

/* ── Mega Link Hover Line ── */
.mega-links a {
    position: relative;
}
.mega-links a::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}
.mega-links a:hover::before {
    width: 100%;
}

/* ── Footer Link Animations ── */
.footer-links a {
    position: relative;
    display: inline-block;
}
.footer-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}
.footer-links a:hover::after {
    width: 100%;
}

/* ── Loading Skeleton ── */
.skeleton {
    background: linear-gradient(90deg, var(--color-gray-100) 25%, var(--color-gray-200) 50%, var(--color-gray-100) 75%);
    background-size: 400% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

/* ── Parallax Glow Orbs ── */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.08;
    pointer-events: none;
}
.glow-orb-1 {
    width: 400px;
    height: 400px;
    background: var(--color-primary);
    top: 10%;
    right: -5%;
    animation: float 12s ease-in-out infinite;
}
.glow-orb-2 {
    width: 300px;
    height: 300px;
    background: var(--color-secondary);
    bottom: 10%;
    left: -5%;
    animation: float 15s ease-in-out infinite 3s;
}
.glow-orb-3 {
    width: 200px;
    height: 200px;
    background: var(--color-accent);
    top: 50%;
    left: 30%;
    animation: float 10s ease-in-out infinite 5s;
}


/* ── Text Reveal Animation ── */
.text-reveal {
    overflow: hidden;
}
.text-reveal span {
    display: inline-block;
    transform: translateY(100%);
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.text-reveal.visible span {
    transform: translateY(0);
}

/* ── Image Reveal ── */
.img-reveal {
    position: relative;
    overflow: hidden;
}
.img-reveal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-bg);
    z-index: 1;
    transform: scaleX(1);
    transform-origin: right;
    transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}
.img-reveal.visible::before {
    transform: scaleX(0);
}

/* ── Magnetic Button Effect ── */
.btn-magnetic {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Cursor Follower ── */
.cursor-follower {
    position: fixed;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(216, 12, 30, 0.3);
    border-radius: 50%;
    pointer-events: none;
    z-index: 99999;
    transition: width 0.3s ease, height 0.3s ease, border-color 0.3s ease;
    transform: translate(-50%, -50%);
    mix-blend-mode: difference;
}
.cursor-follower.hover {
    width: 60px;
    height: 60px;
    border-color: rgba(216, 12, 30, 0.6);
}

/* ── Typing Effect ── */
.typing-text::after {
    content: '|';
    animation: pulse 1s step-end infinite;
    color: var(--color-primary);
}

/* ── Stagger Children Animation ── */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.stagger-children.visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.15s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.25s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(7) { transition-delay: 0.35s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(8) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }

/* ── Page Transition ── */
.page-transition {
    position: fixed;
    inset: 0;
    z-index: 99998;
    pointer-events: none;
}
.page-transition-layer {
    position: absolute;
    inset: 0;
    background: var(--color-primary);
    transform: scaleY(0);
    transform-origin: bottom;
}
.page-transition.active .page-transition-layer {
    animation: pageTransition 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}
@keyframes pageTransition {
    0% { transform: scaleY(0); transform-origin: bottom; }
    50% { transform: scaleY(1); transform-origin: bottom; }
    51% { transform-origin: top; }
    100% { transform: scaleY(0); transform-origin: top; }
}

/* ── Noise Texture Overlay ── */
.noise-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9998;
    opacity: 0.015;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
}