.anim {
    opacity: 0;
    animation-duration: 1s;
    animation-fill-mode: forwards;
}

/* Soldan giriş */
.a1 {
    animation-name: slideLeft;
    animation-delay: 0.2s;
}

/* Alttan fade */
.a2 {
    animation-name: fadeUp;
    animation-delay: 0.8s;
}

/* Sağdan giriş */
.a3 {
    animation-name: slideRight;
    animation-delay: 1.4s;
}

.a4 {
    animation-name: fadeUp;
    animation-delay: 2.0s;
}

/* Keyframes */

@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);
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ref-box {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: all .3s ease;
}

/* logolar ilk başta gri */
.ref-box img {
    filter: grayscale(100%);
    opacity: .7;
    transition: all .3s ease;
    max-height: 60px;
}

/* hover efekti */
.ref-box:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
}

.ref-box:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

a.btn-secondary {
    background: color-mix(in srgb, var(--accent-color), transparent 90%);
    color: var(--accent-color);
    gap: 12px;
    padding: 10px 30px;
    border-radius: 12px;
    border-bottom: 1px solid color-mix(in srgb, var(--default-color), transparent 90%);
}

a.btn-secondary:hover {
    background: color-mix(in srgb, var(--accent-color), transparent 85%);
}

.b{
  font-weight:800;
  /* color:#000; */
}