/* ===================== GLOBAL TRANSITIONS ===================== */
* {
    transition: background-color 0.3s ease,
                color 0.3s ease,
                border-color 0.3s ease,
                box-shadow 0.3s ease,
                transform 0.3s ease;
}

/* ===================== FADE & SLIDE ANIMATIONS ===================== */
.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.slide-up {
    animation: slideUp 0.8s ease forwards;
}

.slide-left {
    animation: slideLeft 0.8s ease forwards;
}

.slide-right {
    animation: slideRight 0.8s ease forwards;
}

/* ===================== KEYFRAMES ===================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

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

/* ===================== HERO GLOW PULSE ===================== */
.glow-circle {
    animation: pulseGlow 4s infinite alternate;
}

@keyframes pulseGlow {
    0% {
        opacity: 0.4;
        transform: scale(1);
    }
    100% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

/* ===================== BUTTON RIPPLE ===================== */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.3), transparent 70%);
    opacity: 0;
    transition: 0.4s;
}

.btn:hover::after {
    opacity: 1;
}

/* ===================== CARD HOVER FLOAT ===================== */
.converter-card:hover,
.service-card:hover,
.feature:hover,
.tech-card:hover {
    animation: floatCard 0.6s ease forwards;
}

@keyframes floatCard {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(-8px);
    }
}

/* ===================== UPLOAD BOX SHAKE ===================== */
.upload-label.shake {
    animation: shake 0.4s;
}

@keyframes shake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    50% { transform: translateX(4px); }
    75% { transform: translateX(-4px); }
    100% { transform: translateX(0); }
}

/* ===================== FORM FOCUS GLOW ===================== */
.form-group input:focus,
.form-group textarea:focus {
    animation: glowPulse 1.5s infinite alternate;
}

@keyframes glowPulse {
    from {
        box-shadow: 0 0 6px rgba(155,92,255,0.4);
    }
    to {
        box-shadow: 0 0 12px rgba(155,92,255,0.8);
    }
}

/* ===================== SCROLL REVEAL (JS CONTROLLED) ===================== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
    transition: 0.8s ease;
}