/* === Scroll-triggered animations === */
.anim-fade-up,
.anim-fade-left,
.anim-fade-right,
.anim-scale-in,
.anim-fade-in {
    opacity: 0;
    transition: opacity 0.6s cubic-bezier(0.22, 0.61, 0.36, 1),
                transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.anim-fade-up     { transform: translateY(36px); }
.anim-fade-left   { transform: translateX(-36px); }
.anim-fade-right  { transform: translateX(36px); }
.anim-scale-in    { transform: scale(0.92); }
.anim-fade-in     { transform: none; }

.anim-fade-up.visible,
.anim-fade-left.visible,
.anim-fade-right.visible,
.anim-scale-in.visible,
.anim-fade-in.visible {
    opacity: 1;
    transform: translate(0) scale(1);
}

/* === Stagger children === */
.anim-stagger > * {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.55s cubic-bezier(0.22, 0.61, 0.36, 1),
                transform 0.55s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.anim-stagger.visible > *:nth-child(1) { transition-delay: 0s;    opacity: 1; transform: translateY(0); }
.anim-stagger.visible > *:nth-child(2) { transition-delay: 0.1s;  opacity: 1; transform: translateY(0); }
.anim-stagger.visible > *:nth-child(3) { transition-delay: 0.2s;  opacity: 1; transform: translateY(0); }
.anim-stagger.visible > *:nth-child(4) { transition-delay: 0.3s;  opacity: 1; transform: translateY(0); }
.anim-stagger.visible > *:nth-child(5) { transition-delay: 0.4s;  opacity: 1; transform: translateY(0); }
.anim-stagger.visible > *:nth-child(6) { transition-delay: 0.5s;  opacity: 1; transform: translateY(0); }
.anim-stagger.visible > *:nth-child(7) { transition-delay: 0.6s;  opacity: 1; transform: translateY(0); }
.anim-stagger.visible > *:nth-child(8) { transition-delay: 0.7s;  opacity: 1; transform: translateY(0); }

/* === Hero entrance (page-load, no scroll trigger) === */
.anim-hero-title {
    opacity: 0;
    transform: translateY(24px);
    animation: heroSlideUp 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.15s forwards;
}
.anim-hero-subtitle {
    opacity: 0;
    transform: translateY(24px);
    animation: heroSlideUp 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.35s forwards;
}
.anim-hero-cta {
    opacity: 0;
    transform: translateY(24px);
    animation: heroSlideUp 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.55s forwards;
}
@keyframes heroSlideUp {
    to { opacity: 1; transform: translateY(0); }
}

/* === Counter animation (numbers) === */
.counter {
    display: inline-block;
}
.counter.counting {
    transition: none;
}

/* === Timeline trigger sentinel === */
.timeline-trigger {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    pointer-events: none;
}

/* === Timeline line draw === */
.timeline-anim {
    position: relative;
}
.timeline-anim::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, #0068dd 0%, #00e5ff 100%);
    z-index: 0;
    transform-origin: top;
    transform: translateX(-50%) scaleY(0);
    transition: transform 1.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.timeline-anim.visible::before {
    transform: translateX(-50%) scaleY(1);
}

/* === Timeline card stagger === */
.timeline-anim .timeline-item {
    opacity: 0;
    transform: translateY(30px);
}
.timeline-anim.visible .timeline-item {
    animation: fadeInUp 0.65s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}
.timeline-anim.visible .timeline-item:nth-child(3) { animation-delay: 0s; }
.timeline-anim.visible .timeline-item:nth-child(4) { animation-delay: 0.28s; }
.timeline-anim.visible .timeline-item:nth-child(5) { animation-delay: 0.56s; }
.timeline-anim.visible .timeline-item:nth-child(6) { animation-delay: 0.84s; }
.timeline-anim.visible .timeline-item:nth-child(7) { animation-delay: 1.12s; }

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

/* === Hover lift (cards, buttons) === */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1),
                box-shadow 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 104, 221, 0.14);
}

.hover-btn {
    transition: transform 0.25s cubic-bezier(0.22, 0.61, 0.36, 1),
                box-shadow 0.25s cubic-bezier(0.22, 0.61, 0.36, 1),
                background 0.25s;
}
.hover-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 104, 221, 0.3);
}

/* === Nav underline slide === */
.nav-underline {
    position: relative;
}
.nav-underline::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #0068dd;
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.nav-underline:hover::after,
.nav-underline.active::after {
    transform: scaleX(1);
}

/* === Image lazy-reveal === */
.img-reveal {
    opacity: 0;
    transform: scale(0.96);
    transition: opacity 0.6s cubic-bezier(0.22, 0.61, 0.36, 1),
                transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.img-reveal.visible {
    opacity: 1;
    transform: scale(1);
}

/* === reduced-motion === */
@media (prefers-reduced-motion: reduce) {
    .anim-fade-up,
    .anim-fade-left,
    .anim-fade-right,
    .anim-scale-in,
    .anim-fade-in,
    .anim-stagger > *,
    .timeline-anim::before,
    .img-reveal {
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
        animation: none !important;
    }
    .timeline-anim::before { transform: translateX(-50%) scaleY(1) !important; }
    .timeline-anim .timeline-item {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
    .anim-hero-title,
    .anim-hero-subtitle,
    .anim-hero-cta {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
    .client-logos-track {
        animation: none !important;
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .timeline-anim::before { left: 20px; }
}
@media (max-width: 480px) {
    .timeline-anim::before { left: 16px; }
}