/* Button Base Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: 5px;
    transition: all 0.3s ease;
    gap: 0.5rem;
}

.btn:focus {
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(var(--bs-primary-rgb), 0.25);
}

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Button Variants */
.btn-primary {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--bs-primary-dark);
    border-color: var(--bs-primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--bs-secondary);
    border-color: var(--bs-secondary);
    color: #ffffff;
}

.btn-secondary:hover {
    background-color: var(--bs-secondary-dark);
    border-color: var(--bs-secondary-dark);
    transform: translateY(-2px);
}

.btn-outline-primary {
    color: var(--bs-primary);
    border-color: var(--bs-primary);
    background-color: transparent;
}

.btn-outline-primary:hover {
    background-color: var(--bs-primary);
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-outline-secondary {
    color: var(--bs-secondary);
    border-color: var(--bs-secondary);
    background-color: transparent;
}

.btn-outline-secondary:hover {
    background-color: var(--bs-secondary);
    color: #ffffff;
    transform: translateY(-2px);
}

/* Button with Icon */
.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-icon i {
    font-size: 1.1em;
}

/* Button Groups */
.btn-group {
    display: inline-flex;
    gap: 0.5rem;
}

.btn-group-vertical {
    display: inline-flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Button States */
.btn:disabled,
.btn.disabled {
    opacity: 0.65;
    pointer-events: none;
}

.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 1rem;
    height: 1rem;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-right-color: transparent;
    animation: button-loading 0.75s linear infinite;
}

@keyframes button-loading {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Responsive Adjustments */
@media (max-width: 767.98px) {
    .btn-group {
        flex-direction: column;
        width: 100%;
    }

    .btn-group .btn {
        width: 100%;
    }
}

/* Button Animation */
.btn[data-aos] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.btn[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}