/* Professional Animations & Transitions */

/* Lazy loading and fade animations */
.lazy {
    opacity: 0;
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in {
    opacity: 1;
}

/* Enhanced scroll animations with stagger effect */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation delays for multiple elements */
.animate-on-scroll:nth-child(1) { transition-delay: 0.1s; }
.animate-on-scroll:nth-child(2) { transition-delay: 0.2s; }
.animate-on-scroll:nth-child(3) { transition-delay: 0.3s; }
.animate-on-scroll:nth-child(4) { transition-delay: 0.4s; }
.animate-on-scroll:nth-child(5) { transition-delay: 0.5s; }

/* Professional card hover effects */
.card-hover {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(0);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Enhanced button animations */
.btn-primary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(0);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

/* Professional image hover effects */
.image-hover {
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.image-hover img {
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1);
}

.image-hover:hover img {
    transform: scale(1.05);
}

/* Professional loading animations */
.loading-spinner {
    display: none;
    width: 40px;
    height: 40px;
    margin: 20px auto;
    border: 3px solid rgba(59, 130, 246, 0.1);
    border-top: 3px solid #3B82F6;
    border-radius: 50%;
    animation: spin 1s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Enhanced form feedback */
.form-success {
    color: #059669;
    display: none;
    animation: slideInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-error {
    color: #DC2626;
    display: none;
    animation: slideInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Professional navigation animations */
.nav-link {
    position: relative;
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3B82F6;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Professional section transitions */
.section-enter {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-enter.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Enhanced hero animations */
.hero-content {
    animation: heroFadeIn 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-image {
    animation: heroSlideIn 1.4s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

@keyframes heroFadeIn {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes heroSlideIn {
    0% {
        opacity: 0;
        transform: translateX(50px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Professional parallax effect */
.parallax-element {
    transition: transform 0.1s linear;
}

/* Enhanced mobile menu animations */
.mobile-menu-item {
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.active .mobile-menu-item {
    opacity: 1;
    transform: translateX(0);
}

.mobile-menu.active .mobile-menu-item:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-menu-item:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.active .mobile-menu-item:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.active .mobile-menu-item:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.active .mobile-menu-item:nth-child(5) { transition-delay: 0.3s; }
.mobile-menu.active .mobile-menu-item:nth-child(6) { transition-delay: 0.35s; }
.mobile-menu.active .mobile-menu-item:nth-child(7) { transition-delay: 0.4s; }
.mobile-menu.active .mobile-menu-item:nth-child(8) { transition-delay: 0.45s; }