/* ============================================
   DhvaniAI - Animations & Transitions
   ============================================ */

/* Fade-in on scroll */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered delays for grid items */
.services-grid .service-card:nth-child(1) { transition-delay: 0.05s; }
.services-grid .service-card:nth-child(2) { transition-delay: 0.1s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.15s; }
.services-grid .service-card:nth-child(4) { transition-delay: 0.2s; }
.services-grid .service-card:nth-child(5) { transition-delay: 0.25s; }
.services-grid .service-card:nth-child(6) { transition-delay: 0.3s; }
.services-grid .service-card:nth-child(7) { transition-delay: 0.35s; }
.services-grid .service-card:nth-child(8) { transition-delay: 0.4s; }
.services-grid .service-card:nth-child(9) { transition-delay: 0.45s; }
.services-grid .service-card:nth-child(10) { transition-delay: 0.5s; }
.services-grid .service-card:nth-child(11) { transition-delay: 0.55s; }
.services-grid .service-card:nth-child(12) { transition-delay: 0.6s; }

.results-grid .result-card:nth-child(1) { transition-delay: 0.05s; }
.results-grid .result-card:nth-child(2) { transition-delay: 0.1s; }
.results-grid .result-card:nth-child(3) { transition-delay: 0.15s; }
.results-grid .result-card:nth-child(4) { transition-delay: 0.2s; }

.testimonial-grid .testimonial-card:nth-child(1) { transition-delay: 0.05s; }
.testimonial-grid .testimonial-card:nth-child(2) { transition-delay: 0.1s; }
.testimonial-grid .testimonial-card:nth-child(3) { transition-delay: 0.15s; }

/* Hero badge pulse */
.hero-badge {
    animation: badge-glow 3s ease-in-out infinite;
}

@keyframes badge-glow {
    0%, 100% { box-shadow: 0 0 0 rgba(124, 58, 237, 0); }
    50% { box-shadow: 0 0 20px rgba(124, 58, 237, 0.1); }
}

/* Service card hover glow */
.service-card:hover .service-icon {
    transform: scale(1.05);
    box-shadow: 0 0 24px rgba(124, 58, 237, 0.2);
}

.service-icon {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Gradient text shimmer */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

.hero-title .gradient-text {
    background-size: 200% auto;
    animation: shimmer 4s linear infinite;
}

/* About stat cards float */
.about-stat-card {
    animation: float-subtle 6s ease-in-out infinite;
}

.about-stat-card:nth-child(2) {
    animation-delay: 1s;
}

.about-stat-card:nth-child(3) {
    animation-delay: 2s;
}

@keyframes float-subtle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.about-stat-card:hover {
    animation-play-state: paused;
}

/* Result number glow */
.result-card:hover .result-number {
    filter: drop-shadow(0 0 8px rgba(124, 58, 237, 0.4));
}

/* Button ripple effect */
.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:active::after {
    width: 300px;
    height: 300px;
}

/* Mobile menu animation */
.mobile-menu {
    transform: translateY(-10px);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
}

/* Mobile toggle animation */
.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Step number hover */
.process-step:hover .step-number {
    opacity: 1;
    transform: scale(1.05);
    transition: opacity 0.3s, transform 0.3s;
}

/* Smooth section transitions */
section {
    position: relative;
}

/* Contact form focus animation */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    transform: translateY(-1px);
}

/* Logo hover */
.logo:hover .logo-icon svg {
    transform: rotate(10deg);
    transition: transform 0.3s ease;
}

/* Client logo hover */
.client-logo-item:hover .client-name {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Pause logo scroll on hover */
.client-logos:hover .logo-track {
    animation-play-state: paused;
}

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

    .fade-in {
        opacity: 1;
        transform: none;
    }

    .logo-track {
        animation: none;
    }
}