/* ============================================================
   oNiD Racing — Animation & Motion System
   Philosophy: purposeful motion, not decoration.
   Every animation serves a reason: reveal, emphasis, feedback.
   ============================================================ */

/* ── Scroll reveal base ── */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.reveal.reveal--left {
    transform: translateX(-40px);
}

.reveal.reveal--right {
    transform: translateX(40px);
}

.reveal.reveal--scale {
    transform: scale(0.94);
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* Staggered children */
.reveal-group > * {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.reveal-group.is-visible > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0s; }
.reveal-group.is-visible > *:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.1s; }
.reveal-group.is-visible > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.2s; }
.reveal-group.is-visible > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.3s; }
.reveal-group.is-visible > *:nth-child(5) { opacity: 1; transform: none; transition-delay: 0.4s; }
.reveal-group.is-visible > *:nth-child(6) { opacity: 1; transform: none; transition-delay: 0.5s; }

/* ── Hero entrance ── */
.hero-content h1,
.hero-content p,
.hero-content .btn {
    opacity: 0;
    transform: translateY(20px);
    animation: heroReveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-content h1 { animation-delay: 0.1s; }
.hero-content p  { animation-delay: 0.28s; }
.hero-content .btn { animation-delay: 0.44s; }

@keyframes heroReveal {
    to {
        opacity: 1;
        transform: none;
    }
}

/* ── Speed line — decorative rule on section headers ── */
.speed-line {
    display: block;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 12px 0 24px;
    transition: width 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.speed-line.is-visible {
    width: 60px;
}

.speed-line--center {
    margin-left: auto;
    margin-right: auto;
}

/* ── Stat counter ── */
.stat-number[data-target] {
    font-variant-numeric: tabular-nums;
}

/* ── Button press feedback ── */
.btn {
    transition: background-color 0.2s ease,
                color 0.2s ease,
                border-color 0.2s ease,
                transform 0.12s ease,
                box-shadow 0.2s ease;
}

.btn:active {
    transform: scale(0.97);
}

/* ── Service cards — sharp left-border reveal ── */
.service-card {
    transition: box-shadow 0.3s ease, border-left-color 0.3s ease;
    border-left: 3px solid transparent;
}

.service-card:hover {
    transform: none;
    box-shadow: 0 12px 40px rgba(150, 90, 164, 0.18);
    border-left-color: var(--primary-color);
}

/* ── Partner logo hover — subtle lift with colour reveal ── */
.partner-logo {
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
                filter 0.25s ease;
    filter: grayscale(20%);
}

.partner-logo:hover {
    transform: translateY(-4px) scale(1.04);
    filter: grayscale(0%);
}

/* ── Nav link underline wipe ── */
.nav-menu > li > a {
    position: relative;
}

.nav-menu > li > a::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 15px;
    right: 15px;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-menu > li > a:hover::after,
.nav-menu > li.active > a::after {
    transform: scaleX(1);
}

/* Override the old colour-only active state */
.nav-menu li.active > a {
    color: var(--primary-color);
}

/* ── Dropdown menu — sharper entry ── */
.dropdown-menu {
    transform: translateY(6px);
    transition: opacity 0.2s ease,
                visibility 0.2s ease,
                transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.dropdown:hover .dropdown-menu {
    transform: translateY(0);
}

/* ── Stats section — number pop ── */
@keyframes statPop {
    0%   { transform: scale(0.85); opacity: 0; }
    60%  { transform: scale(1.06); }
    100% { transform: scale(1);    opacity: 1; }
}

.stat-column.is-counted .stat-number {
    animation: statPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* ── Header scroll transition ── */
#site-header {
    transition: padding 0.3s ease,
                box-shadow 0.3s ease,
                background-color 0.3s ease;
}

/* ── Reduce motion for accessibility ── */
@media (prefers-reduced-motion: reduce) {
    .reveal,
    .reveal-group > *,
    .hero-content h1,
    .hero-content p,
    .hero-content .btn {
        opacity: 1;
        transform: none;
        animation: none;
        transition: none;
    }

    .speed-line {
        width: 60px;
        transition: none;
    }

    .btn,
    .service-card,
    .partner-logo {
        transition: none;
    }
}