/**
 * Button Loading Styles
 */

.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.85;
}

.btn-loading .spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* Smooth transitions for button states */
.btn {
    transition: all 0.2s ease-in-out;
}

/* Pulse animation for loading buttons */
@keyframes btn-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(13, 110, 253, 0.4);
    }
    70% {
        box-shadow: 0 0 0 6px rgba(13, 110, 253, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(13, 110, 253, 0);
    }
}

.btn-loading.btn-primary {
    animation: btn-pulse 1.5s infinite;
}

.btn-loading.btn-success {
    animation: btn-pulse-success 1.5s infinite;
}

.btn-loading.btn-danger {
    animation: btn-pulse-danger 1.5s infinite;
}

@keyframes btn-pulse-success {
    0% {
        box-shadow: 0 0 0 0 rgba(25, 135, 84, 0.4);
    }
    70% {
        box-shadow: 0 0 0 6px rgba(25, 135, 84, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(25, 135, 84, 0);
    }
}

@keyframes btn-pulse-danger {
    0% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.4);
    }
    70% {
        box-shadow: 0 0 0 6px rgba(220, 53, 69, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0);
    }
}

/* Hover effects with smooth transitions */
.btn:not(.btn-loading):hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn:not(.btn-loading):active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Click ripple effect */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active:not(.btn-loading)::after {
    width: 300px;
    height: 300px;
}

/* Link buttons */
a.btn:not(.btn-loading):hover {
    text-decoration: none;
}