/* ========================================
   NEXUS SOLUTIONS - Animations
   ======================================== */

/* ---------- Keyframes ---------- */
@keyframes gradientPulse {
    0% {
        opacity: 0.7;
        transform: scale(1);
    }
    100% {
        opacity: 1;
        transform: scale(1.05);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.5);
    }
}

@keyframes bounceDown {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(8px);
    }
}

@keyframes floatPulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    }
    50% {
        box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes slideFromLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideFromRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes particleFloat {
    0%, 100% {
        transform: translate(0, 0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translate(var(--tx), var(--ty));
        opacity: 0;
    }
}

@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 0 5px rgba(37, 99, 235, 0.2);
    }
    50% {
        box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
    }
}

/* ---------- Hero Animations (play on load) ---------- */
.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.animate-fade-up {
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
}

/* ---------- Scroll Reveal Classes ---------- */
/* These are applied by JS Intersection Observer */
.reveal,
.reveal-up,
.reveal-left,
.reveal-right,
.reveal-scale {
    opacity: 0;
    transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal {
    transform: translateY(20px);
}

.reveal-up {
    transform: translateY(40px);
    transition-delay: var(--delay, 0s);
}

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

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

.reveal-scale {
    transform: scale(0.9);
}

/* Active state (when element is in viewport) */
.reveal.active,
.reveal-up.active,
.reveal-left.active,
.reveal-right.active,
.reveal-scale.active {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}

/* ---------- Particle Styles ---------- */
.particle {
    position: absolute;
    width: var(--size, 3px);
    height: var(--size, 3px);
    background: var(--color, rgba(37, 99, 235, 0.5));
    border-radius: 50%;
    animation: particleFloat var(--duration, 8s) var(--delay-p, 0s) ease-in-out infinite;
}

/* ---------- Navbar link hover underline ---------- */
.navbar__link {
    position: relative;
}

.navbar__link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary-light);
    border-radius: 1px;
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.navbar__link:hover::after,
.navbar__link--active::after {
    width: calc(100% - 32px);
}

/* ---------- About Card Float ---------- */
.about__card--1 {
    animation: floatCard1 6s ease-in-out infinite;
}
.about__card--2 {
    animation: floatCard2 7s ease-in-out infinite;
}
.about__card--3 {
    animation: floatCard3 5s ease-in-out infinite;
}
.about__card--4 {
    animation: floatCard4 8s ease-in-out infinite;
}

@keyframes floatCard1 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
@keyframes floatCard2 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}
@keyframes floatCard3 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
@keyframes floatCard4 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

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

    .reveal,
    .reveal-up,
    .reveal-left,
    .reveal-right,
    .reveal-scale {
        opacity: 1;
        transform: none;
    }
}